java web数据库的增删改查详细
本次课上实验是完成数据库的增删改查。
包括增加用户信息、删除用户信息、多条件查找用户信息、修改用户信息（主要是复选框单选框等的相关操作。）
下面下看一下各个界面的样子。
总页面：显示全部页面：增加页面（可以控制复选框的选入个数）删除、修改、总修改、查找
在修改的时候相应的内容会出现在原来的框内，对于复选框和单选框也是如此：
下面是具体的代码：
Themain.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<style>
a:link {color:blue;}
a:visited {color:blue;}/*选择未访问、已访问、悬浮和活动链接，并设置它们的样式：*/
a:hover {color:red;}
a{
font-size:22px;
font-family:"楷体";/*设置字体*/
font-weight:2px;
}
h1
{
color:red;
font-size:44px;}
</style>
<body >
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
request.setAttribute("message", "");
</script>
<%} %>
<h1 align="center" >请选择下面其中一项</h1>
<a href="UserServlet?method=allall"><h2 align="center">显示全部信息</h2></a>
<a href="zc.jsp"><h2 align="center">增加相关数据</h2></a>
<a href="delete.jsp"><h2 align="center">删除相关内容</h2></a>
<a href="updatesome.jsp"><h2 align="center">修改相关内容</h2></a>
<a href="selectmore.jsp"><h2 align="center">查找相关内容总的</h2></a>
<a href="Examine.jsp"><h2 align="center">查找相关内容</h2></a>
</body>
</html>
checkall.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body > <div align="center">
<h1 style="color: red;" align="center"> 所有成员信息列表</h1>
<table width="900">
<tr>
<td> <h3 style="color: yellow;">名字</h3></td>
<td><h3 style="color: yellow;">性别</h3></td>
<td><h3 style="color: yellow;">民族</h3></td>
<td><h3 style="color: yellow;">政治面目</h3></td>
</tr>
<c:forEach items="${allthing}" var="item" >
<tr>
<td> <a href="UserServlet?method=examine33&name=${item.name}">${item.name}</a></td>
<td>${item.sex}</td>
<td>${item.minzu}</td>
<td>${item.zhengzhi}</td>
</tr>
</c:forEach>
</table>
<a href="Themain.jsp"><h2 align="center">点击此处返回主页面</h2></a>
</div>
</body>
</html>
delete.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body text="yellow" style="background: url(images/wen7.jpg); background-size:100%" >
<h2 align="center">请输入想要删除信息的用户名</h2>
<form action="UserServlet?method=deletecheck" onsubmit="return chackall()" method="post" > <%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %> <table align="center">
<tr><td>名字：</td><td><input type="text" id="name4" name="name4" style=" border-color:Lime;border-radius:6px;" maxlength="12" value="" placeholder="请输入账户名" /></td>
<tr><td></td><td><input type="submit" value="删除此用户所有信息" style="background-color:CornflowerBlue;width:150px;height:25px;border-radius:4px;" ></td>
<a href="Themain.jsp"><h3 align="center">点击此处回到主页面!!!!!!</h4></a>
<script type="text/javascript"> //重置按钮处添加onclick调用formReset %>
function checkZhanghao()
{
var zhanghao = document.getElementById("zhanghu4");
var zhanghao1=zhanghao.value;
var reg = /^[a-z][a-z0-9A-Z]{6}/;
var ref= /^[A-Z][a-z0-9A-Z]{6}/
if(reg.test(zhanghao1)||ref.test(zhanghao1)){
//符合规则
return true;
}else{
//不符合规则
alert('账户格式错误,应以英文字母开头并且7位及以上');
zhanghao.value = "";
zhanghao.focus();
return false;
}
}
function chackall() {
var zhanghu3=document.getElementById("zhanghu4");
if(zhanghu3.value=="")
{
alert("用户名不能为空");
zhanghu3.focus();
return false;
}
return true;
}
</script> </table>
</form>
</body>
</html>
delete1.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body text="yellow" style="background: url(images/wen5.jpg); background-size:100%">
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<h2 align="center">恭喜您删除消息成功!!!!!</h2>
<a href="Themain.jsp"><h2 align="center">点击此处返回到主页面</h2></a>
</body>
</html>
deletecheck2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<style>
a:link {color:blue;}
a:visited {color:blue;}/*选择未访问、已访问、悬浮和活动链接，并设置它们的样式：*/
a:hover {color:red;}
a{
font-size:18px;
font-family:"楷体";/*设置字体*/
font-weight:2px;
}
h1
{
color:red;
font-size:44px;}
</style>
<body text="red" >
<div align="center">
<h1 style="color: red;" align="center"> 所有成员信息列表</h1>
<table width="900">
<tr>
<td> <h3 style="color: yellow;">名字</h3></td>
<td><h3 style="color: yellow;">性别</h3></td>
<td><h3 style="color: yellow;">民族</h3></td>
<td><h3 style="color: yellow;">时间</h3></td>
<td><h3 style="color: yellow;">年龄</h3></td>
<td><h3 style="color: yellow;">政治面目</h3></td>
<td><h3 style="color: yellow;">服务类别</h3></td>
</tr>
<c:forEach items="${Thething1}" var="item" >
<tr>
<td>${item.name}</td>
<td>${item.sex}</td>
<td>${item.minzu}</td>
<td>${item.time}</td>
<td>${item.age}</td>
<td>${item.zhengzhi}</td>
<td><c:if test="${fn:contains(item.fuwu,'A')}">扶危济困 </c:if>
<c:if test="${fn:contains(item.fuwu,'B')}">敬老助残 </c:if>
<c:if test="${fn:contains(item.fuwu,'C')}">社区服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'D')}">秩序维护 </c:if>
<c:if test="${fn:contains(item.fuwu,'E')}">文体服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'F')}">环境保护</c:if>
<c:if test="${fn:contains(item.fuwu,'G')}">治安防范 </c:if>
<c:if test="${fn:contains(item.fuwu,'H')}">医疗救治 </c:if>
<c:if test="${fn:contains(item.fuwu,'I')}">法律援助</c:if>
<c:if test="${fn:contains(item.fuwu,'J')}">大型活动 </c:if>
<c:if test="${fn:contains(item.fuwu,'K')}">心理疏导 </c:if>
<c:if test="${fn:contains(item.fuwu,'L')}">精神抚慰 </c:if>
<c:if test="${fn:contains(item.fuwu,'M')}">支教支医 </c:if>
<c:if test="${fn:contains(item.fuwu,'N')}">科学普及 </c:if>
<c:if test="${fn:contains(item.fuwu,'O')}">应急救援 </c:if>
<c:if test="${fn:contains(item.fuwu,'P')}">便民服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'Q')}">民事调解 </c:if>
<c:if test="${fn:contains(item.fuwu,'X')}">文明引导 </c:if>
<c:if test="${fn:contains(item.fuwu,'Y')}">安全生产 </c:if>
<c:if test="${fn:contains(item.fuwu,'Z')}">禁毒宣传 </c:if> </td>
<td><a href="UserServlet?method=delete&name=${item.name}" onclick="return check()">删除</a>
</tr>
</c:forEach> </table>
<script type="text/javascript">
function check() {
if (confirm("真的要删除吗？")){
return true;
}else{
return false;
}
}
</script> <a href="Themain.jsp"><h2 align="center">点击此处返回主页面</h2></a>
</html>
Examine.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body >
<h2 align="center">请输入想要查询的消息的用户名</h2>
<form action="UserServlet?method=examine" onsubmit="return chackall()" method="post" > <%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %> 名字：<input type="text" id="name3" name="name3" style=" border-color:Lime;border-radius:6px;" maxlength="12" /><br><br> 性别：<input type="radio" id="sex3" name="sex3" value="男" checked="checked" />男
<input type="radio" name="sex3" value="女" />女
<br><br> 民族：<input type="text" id="minzu3" style=" border-color:Lime;border-radius:6px;" name="minzu3" /><br><br> 时间：<input type="text" id="time3" style=" border-color:Lime;border-radius:6px;" name="time3" maxlength="8" /><br><br> 政治:<select name="zhengzhi3" id="zhengzhi3">
<option value="群众">群众</option>
<option value="共青团员">共青团员</option>
<option value="中共党员">中共党员</option>
</select>
<br><br>
服务类型:
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="A" />扶危济困
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="B" />敬老助残
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="C" />社区服务
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="D" />秩序维护
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="E" />文体服务 <br><br>
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="F" />环境保护
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="G" />治安防范
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="H" />医疗救治
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="I" />法律援助
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="J" />大型活动 <br><br>
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="K" />心理疏导 <input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="L" />精神抚慰
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="M" />支教支医
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="N " />科学普及
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="O "/>应急救援<br><br> <input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="P" />便民服务
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="Q " />民事调解 <input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="X" />文明引导
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="Y" />安全生产
<input type="checkbox" name="fuwu3" onClick="doCheck(this)" value="Z " />禁毒宣传 <input type="submit" value="添加">
<input type="reset" value="重置">
<a href="Themain.jsp"><h3 align="left">点击此处回到主页面!!!!!!</h4></a>
<br/>
<br/> <input type="submit" value="进行查找" style="background-color:CornflowerBlue;width:150px;height:25px;border-radius:4px;" >
<a href="Themain.jsp"><h3 align="center">点击此处回到主页面!!!!!!</h4></a> </form>
</body>
</html>
examine1.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<div align="center">
<h1 style="color: red;" align="center"> 所有成员信息列表</h1>
<table width="900">
<tr>
<td> <h3 style="color: yellow;">名字</h3></td>
<td><h3 style="color: yellow;">性别</h3></td>
<td><h3 style="color: yellow;">民族</h3></td>
<td><h3 style="color: yellow;">政治面目</h3></td>
</tr>
<c:forEach items="${Thething}" var="item" >
<tr>
<td> <a href="UserServlet?method=examine33&name=${item.name}">${item.name}</a></td>
<td>${item.sex}</td>
<td>${item.minzu}</td>
<td>${item.zhengzhi}</td>
</tr>
</c:forEach>
</table>
<a href="Themain.jsp"><h2 align="center">点击此处返回主页面</h2></a>
</html>
examine2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body >
<div align="center">
<h1 style="color: red;" align="center"> 所有成员信息列表</h1>
<table width="900">
<tr>
<td> <h3 style="color: yellow;">名字</h3></td>
<td><h3 style="color: yellow;">性别</h3></td>
<td><h3 style="color: yellow;">民族</h3></td>
<td><h3 style="color: yellow;">时间</h3></td>
<td><h3 style="color: yellow;">年龄</h3></td>
<td><h3 style="color: yellow;">政治面目</h3></td>
<td><h3 style="color: yellow;">服务类别</h3></td>
</tr>
<c:forEach items="${Thething2}" var="item" >
<tr>
<td>${item.name}</td>
<td>${item.sex}</td>
<td>${item.minzu}</td>
<td>${item.time}</td>
<td>${item.age}</td>
<td>${item.zhengzhi}</td>
<td><c:if test="${fn:contains(item.fuwu,'A')}">扶危济困 </c:if>
<c:if test="${fn:contains(item.fuwu,'B')}">敬老助残 </c:if>
<c:if test="${fn:contains(item.fuwu,'C')}">社区服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'D')}">秩序维护 </c:if>
<c:if test="${fn:contains(item.fuwu,'E')}">文体服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'F')}">环境保护</c:if>
<c:if test="${fn:contains(item.fuwu,'G')}">治安防范 </c:if>
<c:if test="${fn:contains(item.fuwu,'H')}">医疗救治 </c:if>
<c:if test="${fn:contains(item.fuwu,'I')}">法律援助</c:if>
<c:if test="${fn:contains(item.fuwu,'J')}">大型活动 </c:if>
<c:if test="${fn:contains(item.fuwu,'K')}">心理疏导 </c:if>
<c:if test="${fn:contains(item.fuwu,'L')}">精神抚慰 </c:if>
<c:if test="${fn:contains(item.fuwu,'M')}">支教支医 </c:if>
<c:if test="${fn:contains(item.fuwu,'N')}">科学普及 </c:if>
<c:if test="${fn:contains(item.fuwu,'O')}">应急救援 </c:if>
<c:if test="${fn:contains(item.fuwu,'P')}">便民服务 </c:if>
<c:if test="${fn:contains(item.fuwu,'Q')}">民事调解 </c:if>
<c:if test="${fn:contains(item.fuwu,'X')}">文明引导 </c:if>
<c:if test="${fn:contains(item.fuwu,'Y')}">安全生产 </c:if>
<c:if test="${fn:contains(item.fuwu,'Z')}">禁毒宣传 </c:if> </td> </tr>
</c:forEach>
</table>
<a href="Themain.jsp"><h2 align="center">点击此处返回主页面</h2></a>
</html>
image.jsp
<%@ page contentType="image/JPEG"
import="java.awt.*,java.awt.image.*,java.util.*,javax.imageio.*"
pageEncoding="GBK"%>
<%!Color getRandColor(int fc, int bc) {//给定范围获得随机颜色
Random random = new Random();
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
}%>
<%
//设置页面不缓存
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0); // 在内存中创建图象
int width = 60, height = 20;
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB); // 获取图形上下文
Graphics g = image.getGraphics(); //生成随机类
Random random = new Random(); // 设定背景色
g.setColor(getRandColor(200, 250));
g.fillRect(0, 0, width, height); //设定字体
g.setFont(new Font("Times New Roman", Font.PLAIN, 18)); //画边框
//g.setColor(new Color());
//g.drawRect(0,0,width-1,height-1); // 随机产生155条干扰线，使图象中的认证码不易被其它程序探测到
g.setColor(getRandColor(160, 200));
for (int i = 0; i < 100; i++) {
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x, y, x + xl, y + yl);
} // 取随机产生的认证码(4位数字)
String sRand = "";
for (int i = 0; i < 4; i++) {
String rand = String.valueOf(random.nextInt(10));
sRand += rand;
// 将认证码显示到图象中
g.setColor(new Color(20 + random.nextInt(110), 20 + random
.nextInt(110), 20 + random.nextInt(110)));//调用函数出来的颜色相同，可能是因为种子太接近，所以只能直接生成
g.drawString(rand, 13 * i + 6, 16);
} // 将认证码存入SESSION
session.setAttribute("code", sRand); // 图象生效
g.dispose(); // 输出图象到页面
ImageIO.write(image, "JPEG", response.getOutputStream());
out.clear();
out=pageContext.pushBody();
%>
login.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Insert title here</title>
</head>
<body text="yellow" style="background: url(images/wen7.jpg); background-size:100%"> <form action="UserServlet?method=search" method="post" onsubmit="return check()">
<table>
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<tr><td>账户：</td><td><input type="text" name="zhanghu" id="zhanghu" style=" border-color:Lime;border-radius:6px;" placeholder="请输入账户" /><br><br>
</td></tr>
<tr><td>密码：</td><td><input type="password" name="psw" id="psw" style=" border-color:Lime;border-radius:6px;" placeholder="请输入密码" /><br><br>
</td></tr>
<td>验证码：</td>
<td><input type="text" style=" border-color:Lime;border-radius:6px;" size=18 name="code" placeholder="请输入验证码" id="code" maxlength="4" value="" /> </td>
<td>
<img name="img" src="data:image.jsp" width="50" id="img" onclick="javascript:document.getElementById('img').setAttribute('src', 'image.jsp?' + Math.random())">
</tr>
<tr></tr>
</table>
<input type="submit" value="登录">
<input type="reset" value="重置">
<a href="Themain.jsp"><h3 align="left">点击此处回到主页面!!!!!!</h4></a> </form>
<script type="text/javascript">
function check()
{
var zhanghu1=document.getElementById("zhanghu");
var mima1=document.getElementById("psw");
var yanzhang1=document.getElementById("code"); if(zhanghu1.value=="")
{
alert("用户名不能为空请填写");
zhanghu1.focus();
return false;
}
if(mima1.value=="")
{
alert("密码不能为空请填写");
mima1.focus();
return false;
}
if(yanzheng1.value=="")
{
alert("验证码不能为空请填写");
yanzheng1.focus();
return false;
}
}
</script>
</body>
</html>
NewFile.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body text="red" style="background: url(images/wen5.jpg); background-size:100%">
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %> <h2 align="center">恭喜您登录成功！！！</h2>
<a href="Themain.jsp"><h3 align="center">点击此处回到主页面!!!!!!</h4></a>
</body>
</html>
selectmore_show.jsp
<%@ page language="java" contentType="text/html; charse=tUTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>信息显示页面</title>
</head>
<body>
<a href="Themain.jsp">返回主界面</a>
<%
Object message=request.getAttribute("message");
if(message!=null&&!"".equals(message)){
%> <script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<table>
<tr>
<td>姓名</td>
<td>性别</td>
<td>民族</td>
<td>注册日期</td>
<td>年龄</td>
<td>政治面貌</td>
<td>服务类别</td>
</tr>
<c:forEach items="${course11}" var="course1">
<tr>
<td>${course1.name}</td>
<td>${course1.sex}</td>
<td>${course1.minzu}</td>
<td>${course1.time}</td>
<td>${course1.age}</td>
<td>${course1.zhengzhi}</td>
<td>${course1.fuwu}</td> </tr>
</c:forEach>
</table>
</body>
</html>
selectmore.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>查询页面</title> <script>
var i=1;
var j=1;
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
function demoDisplay(){
if(document.getElementById("p2").style.display=="none"){
i++;
j++;
document.getElementById("p2").style.display="inline";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
// alert(i);
// alert(j);
return;
}else if(document.getElementById("p3").style.display=="none")
{
i++;
j++;
document.getElementById("p3").style.display="inline";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
// alert(i);
// alert(j);
return;
}else if(document.getElementById("p4").style.display=="none")
{
i++;
j++;
document.getElementById("p4").style.display="inline";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
// alert(i);
// alert(j);
return;
}else if(document.getElementById("p5").style.display=="none")
{
i++;
j++;
document.getElementById("p5").style.display="inline";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
// alert(i);
// alert(j);
return;
}
}
function demoVisibility(){
if(document.getElementById("p5").style.display=="inline")
{
i--;
j--;
document.getElementById("p5").style.display="none";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
//System.out.println("i:"+i+"j"+j);
return;
}else if(document.getElementById("p4").style.display=="inline")
{
i--;
j--;
document.getElementById("p4").style.display="none";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
//System.out.println("i:"+i+"j"+j);
return;
}else if(document.getElementById("p3").style.display=="inline")
{
i--;
j--;
document.getElementById("p3").style.display="none";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
//System.out.println("i:"+i+"j"+j);
return;
}else if(document.getElementById("p2").style.display=="inline")
{
i--;
j--;
document.getElementById("p2").style.display="none";
document.getElementById('number1').value=i;
document.getElementById('number2').value=j;
//System.out.println("i:"+i+"j"+j);
return;
}
}
</script> </head>
<body>
<%
Object message=request.getAttribute("message");
if(message!=null&&!"".equals(message)){
%> <script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%}%>
<form action="Servlet" method="post">
<br>
<button type="button" onclick="demoDisplay()" class="layui-btn layui-btn-primary layui-btn-sm"><i class="layui-icon">+</i></button>
<button type="button" onclick="demoVisibility()" class="layui-btn layui-btn-primary layui-btn-sm"><i class="layui-icon">-</i></button><br>
<div id="p1">
<select name="g22" style="visibility:hidden">
<option value="且">且</option>
<option value="或">或</option>
</select>
<select name="s1" >
<option>名字</option>
<option>性别</option>
<option>民族</option>
<option>注册日期</option>
<option>年龄</option>
</select>
<input type="text" name="shuru1" value="" />
<select name="c1">
<option>精确</option>
<option>模糊</option>
</select>
<br>
</div> <div id="p2" style="display:none">
<select name="g1" >
<option value="且">且</option>
<option value="或">或</option>
</select>
<select name="s2">
<option>名字</option>
<option>性别</option>
<option>民族</option>
<option>注册日期</option>
<option>年龄</option>
</select>
<input type="text" name="shuru2" value="" />
<select name="c2">
<option>精确</option>
<option>模糊</option>
</select>
<br>
</div> <div id="p3" style="display:none">
<select name="g2">
<option value="且">且</option>
<option value="或">或</option>
</select>
<select name="s3">
<option>名字</option>
<option>性别</option>
<option>民族</option>
<option>注册日期</option>
<option>年龄</option>
</select>
<input type="text" name="shuru3" value="" />
<select name="c3">
<option>精确</option>
<option>模糊</option>
</select>
<br>
</div> <div id="p4" style="display:none">
<select name="g3">
<option value="且">且</option>
<option value="或">或</option>
</select>
<select name="s4">
<option>名字</option>
<option>性别</option>
<option>民族</option>
<option>注册日期</option>
<option>年龄</option>
</select>
<input type="text" name="shuru4" value="" />
<select name="c4">
<option>精确</option>
<option>模糊</option>
</select>
<br>
</div> <div id="p5" style="display:none">
<select name="g4">
<option value="且">且</option>
<option value="或">或</option>
</select>
<select name="s5">
<option>名字</option>
<option>性别</option>
<option>民族</option>
<option>注册日期</option>
<option>年龄</option>
</select>
<input type="text" name="shuru5" value="" />
<select name="c5">
<option>精确</option>
<option>模糊</option>
</select>
</div>
<p hidden>
<input type="text" value="1" id="number1" name="number1">
<input type="text" value="1" id="number2" name="number2">
</p>
<br>
<input type="submit" name="submit" value="查询" >
</form>
<br>
<h4 align="left">
<%-- 一共查询到了<span style="color:red"><%=list.size() %></span>条数据 --%>
</h4>
<table class="table table-striped">
<a href="Themain.jsp"><h3 align="left">点击此处回到主页面!!!!!!</h4></a>
</table> </body>
</html>
updatesome.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body >
<h2 align="center">请输入想要修改信息的用户名</h2>
<form action="UserServlet?method=look" onsubmit="return chackall()" method="post" > <%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %> <table align="center">
<tr><td>名字：</td><td><input type="text" id="name5" style=" border-color:Lime;border-radius:6px;" name="name5" maxlength="12" value="" placeholder="请输入账户名" /></td>
<tr><td></td><td><input type="submit" value="进行修改" style="background-color:CornflowerBlue;width:150px;height:25px;border-radius:4px;" ></td>
<a href="Themain.jsp"><h3 align="center">点击此处回到主页面!!!!!!</h4></a>
<script type="text/javascript"> //重置按钮处添加onclick调用formReset %>
function checkZhanghao()
{
var zhanghao = document.getElementById("zhanghu3");
var zhanghao1=zhanghao.value;
var reg = /^[a-z][a-z0-9A-Z]{6}/;
var ref= /^[A-Z][a-z0-9A-Z]{6}/
if(reg.test(zhanghao1)||ref.test(zhanghao1)){
//符合规则
return true;
}else{
//不符合规则
alert('账户格式错误,应以英文字母开头并且7位及以上');
zhanghao.value = "";
zhanghao.focus();
return false;
}
}
function chackall() {
var zhanghu3=document.getElementById("zhanghu3");
if(zhanghu3.value=="")
{
alert("用户名不能为空");
zhanghu3.focus();
return false;
}
return true;
}
</script> </table>
</form>
</body>
</html>
updatesome1,jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body >
<form action="UserServlet?method=update" method="post" onsubmit="return chackall()" >
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %> 名字：<input type="text" id="name6" name="name6" style=" border-color:Lime;border-radius:6px;" value="${user3.name}" maxlength="12" /><br><br>
性别：
<input type="radio" name="sex6" id="sex6" value="男"
<c:if test="${user3.sex==\"男\" }">checked</c:if>>男 <input type="radio" name="sex6" id="sex6" value="女"
<c:if test="${user3.sex==\"女\" }">checked</c:if>>女
<br><br> 民族：<input type="text" id="minzu6" style=" border-color:Lime;border-radius:6px;" value="${user3.minzu}" name="minzu6" /><br><br> 时间：<input type="text" id="time6" style=" border-color:Lime;border-radius:6px;" name="time6" value="${user3.time}" maxlength="8" /><br><br> 年龄：<input type="text" id="age6" name="age6" value="${user3.age}" style=" border-color:Lime; border-radius:6px;" /><br><br> 政治:<select name="zhengzhi6" id="zhengzhi6">
<option value="群众" <c:if test="${user3.zhengzhi==\"群众\" }">selected</c:if> >群众</option>
<option value="共青团员" <c:if test="${user3.zhengzhi==\"共青团员\" }">selected</c:if> >共青团员</option>
<option value="中共党员" <c:if test="${user3.zhengzhi==\"中共党员\" }">selected</c:if> >中共党员</option>
</select>
<br><br> 服务类型:
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="A" <c:if test="${fn:contains(user3.fuwu,'A')}">checked</c:if> />扶危济困
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="B" <c:if test="${fn:contains(user3.fuwu,'B')}">checked</c:if> />敬老助残
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="C" <c:if test="${fn:contains(user3.fuwu,'C')}">checked</c:if> />社区服务
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="D" <c:if test="${fn:contains(user3.fuwu,'D')}">checked</c:if>/>秩序维护
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="E" <c:if test="${fn:contains(user3.fuwu,'E')}">checked</c:if>/>文体服务 <br><br>
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="F" <c:if test="${fn:contains(user3.fuwu,'F')}">checked</c:if>/>环境保护
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="G" <c:if test="${fn:contains(user3.fuwu,'G')}">checked</c:if>/>治安防范
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="H" <c:if test="${fn:contains(user3.fuwu,'H')}">checked</c:if>/>医疗救治
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="I" <c:if test="${fn:contains(user3.fuwu,'I')}">checked</c:if>/>法律援助
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="J" <c:if test="${fn:contains(user3.fuwu,'J')}">checked</c:if>/>大型活动 <br><br>
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="K" <c:if test="${fn:contains(user3.fuwu,'K')}">checked</c:if>/>心理疏导 <input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="L" <c:if test="${fn:contains(user3.fuwu,'L')}">checked</c:if>/>精神抚慰
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="M" <c:if test="${fn:contains(user3.fuwu,'M')}">checked</c:if>/>支教支医
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="N" <c:if test="${fn:contains(user3.fuwu,'N')}">checked</c:if>/>科学普及
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="O" <c:if test="${fn:contains(user3.fuwu,'O')}">checked</c:if>/>应急救援<br><br> <input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="P" <c:if test="${fn:contains(user3.fuwu,'P')}">checked</c:if> />便民服务
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="Q"<c:if test="${fn:contains(user3.fuwu,'Q')}">"checked"</c:if> />民事调解 <input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="X"<c:if test="${fn:contains(user3.fuwu,'X')}">checked</c:if> />文明引导
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="Y" <c:if test="${fn:contains(user3.fuwu,'Y')}">checked</c:if>/>安全生产
<input type="checkbox" name="fuwu6" onClick="doCheck(this)" value="Z" <c:if test="${fn:contains(user3.fuwu,'Z')}">checked</c:if>/>禁毒宣传 <input type="submit" value="确认修改"> <br/>
<br/> <script type="text/javascript">
//重置按钮处添加onclick调用formReset %>
var num=0; function doCheck(ctrl) {
if(ctrl.checked){
num++;
//window.alert("iNumChecked++" + iNumChecked);
} else {
num--;
//window.alert("iNumChecked--" + iNumChecked);
}
if (num> 4) {
ctrl.checked = false;
num--;
window.alert('最多可以选择六组进行比较');
}
} function checkZhanghao()
{
var zhanghao = document.getElementById("zhanghu");
var zhanghao1=zhanghao.value;
var reg = /^[a-z][a-z0-9A-Z]{6}/;
var ref= /^[A-Z][a-z0-9A-Z]{6}/
if(reg.test(zhanghao1)||ref.test(zhanghao1)){
//符合规则
return true;
}else{
//不符合规则
alert('账户格式错误,应以英文字母开头并且7位及以上');
zhanghao.value = "";
zhanghao.focus();
return false;
}
} function checkPassword()
{
var password = document.getElementById("psw");
if((password.value).length<8)
{
alert('密码应为8位英文或数字');
password.value="";
password.focus();
return false;
}
} function checkId()
{
var id1 = document.getElementById("xuehao")
var id=id1.value;
//学号的正确形式
// var reg = /^[0-9a-zA-Z]{6}/;
if((id<"20180000")|| (id>"20189999"))
{
alert('学号格式不正确应以2018开头的八位数字，请重新填写！');
id1.value="";
id1.focus();
return false;
}
else{
//不符合规则
return true;
}
} </script> <script type="text/javascript">
function chackall() {
var sex=document.getElementById("sex");
var xueyuan=document.getElementById("xueyuan");
var name=document.getElementById("name");
var xi=document.getElementById("xi");
var class1=document.getElementById("class1");
var year=document.getElementById("year");
var sheng=document.getElementById("sheng");
var beizhu=document.getElementById("beizhu");
var mail=document.getElementById("mail"); if(sex.value=="")
{
alert("性别不能为空");
sex.focus();
return false;
} if(name.value=="")
{
alert("名字不能为空");
name.focus();
return false;
} if(mail.value=="")
{
alert("邮箱不能为空");
n.focus();
return false;
} if(xueyuan.value=="")
{
alert("所在学院不能为空");
xueyuan.focus();
return false;
} if(xi.value=="")
{
alert("所在系不能为空");
xi.focus();
return false;
} if(class1.value=="")
{
alert("所在班级不能为空");
class1.focus();
return false;
} if(year.value=="")
{
alert("入学年份不能为空");
year.focus();
return false;
} if(sheng.value=="")
{
alert("生源地不能为空");
sheng.focus();
return false;
} if(beizhu.value=="")
{
alert("备注不能为空");
beizhu.focus();
return false;
} } </script>
</form>
</body>
</html>
updatesome2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body style="background: url(images/wen7.jpg); background-size:100%" text="yellow">
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
<h2 align="center">恭喜您修改信息成功！！！！！</h2>
<h2 align="center"><a href="Themain.jsp">点击此处回到主页面</a></h2>
</body>
</html>
zc.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body >
<%--onsubmit="return chackall()" --%>
<form action="UserServlet?method=add" method="post" onsubmit="return chackall()" >
<%
Object message = request.getAttribute("message");//放置一个字符串，并取出
if(message!=null && !"".equals(message)){ %>
<script type="text/javascript">
alert("<%=request.getAttribute("message")%>");
</script>
<%} %>
名字：<input type="text" id="name" name="name" style=" border-color:Lime;border-radius:6px;" maxlength="12" required="required" /><br><br> 性别：<input type="radio" id="sex" name="sex" value="男" checked="checked" required="required" />男
<input type="radio" name="sex" value="女" />女
<br><br> 民族：<input type="text" id="minzu" style=" border-color:Lime;border-radius:6px;" name="minzu" required="required" /><br><br> 时间：<input type="date" id="time" style=" border-color:Lime;border-radius:6px;" name="time" maxlength="8" required="required" /><br><br> 年龄：<input type="text" id="age" name="age" style=" border-color:Lime;border-radius:6px;" required="required" /><br><br> 政治:<select name="zhengzhi" id="zhengzhi" required="required">
<option value="群众">群众</option>
<option value="共青团员">共青团员</option>
<option value="中共党员">中共党员</option>
</select>
<br><br>
服务类型:
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="A" />扶危济困
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="B" />敬老助残
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="C" />社区服务
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="D" />秩序维护
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="E" />文体服务 <br><br>
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="F" />环境保护
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="G" />治安防范
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="H" />医疗救治
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="I" />法律援助
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="J" />大型活动 <br><br>
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="K" />心理疏导 <input type="checkbox" name="fuwu" onClick="doCheck(this)" value="L" />精神抚慰
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="M" />支教支医
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="N " />科学普及
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="O "/>应急救援<br><br> <input type="checkbox" name="fuwu" onClick="doCheck(this)" value="P" />便民服务
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="Q " />民事调解 <input type="checkbox" name="fuwu" onClick="doCheck(this)" value="X" />文明引导
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="Y" />安全生产
<input type="checkbox" name="fuwu" onClick="doCheck(this)" value="Z" />禁毒宣传 <input type="submit" value="添加">
<input type="reset" value="重置">
<a href="Themain.jsp"><h3 align="left">点击此处回到主页面!!!!!!</h4></a>
<br/>
<br/>
<%--
<script type="text/javascript">
//重置按钮处添加onclick调用formReset %> function checkZhanghao()
{
var zhanghao = document.getElementById("zhanghu");
var zhanghao1=zhanghao.value;
var reg = /^[a-z][a-z0-9A-Z]{6}/;
var ref= /^[A-Z][a-z0-9A-Z]{6}/
if(reg.test(zhanghao1)||ref.test(zhanghao1)){
//符合规则
return true;
}else{
//不符合规则
alert('账户格式错误,应以英文字母开头并且7位及以上');
zhanghao.value = "";
zhanghao.focus();
return false;
}
} function checkPassword()
{
var password = document.getElementById("psw");
if((password.value).length<8)
{
alert('密码应为8位英文或数字');
password.value="";
password.focus();
return false;
}
} function checkId()
{
var id1 = document.getElementById("xuehao")
var id=id1.value;
//学号的正确形式
// var reg = /^[0-9a-zA-Z]{6}/;
if((id<"20180000")|| (id>"20189999"))
{
alert('学号格式不正确应以2018开头的八位数字，请重新填写！');
id1.value="";
id1.focus();
return false;
}
else{
//不符合规则
return true;
}
} </script>--%> <script type="text/javascript">
var num=0; function doCheck(ctrl) {
if(ctrl.checked)
{
num++;
}
else
{
num--;
}
if (num> 4)
{
ctrl.checked = false;
num--;
window.alert('最多可以选择4组进行比较');
}
} <%--
var name=document.getElementById("name");
var sex=document.getElementById("sex");
var minzu=document.getElementById("minzu");
var time=document.getElementById("time");
var age=document.getElementById("age");
var zhengzhi=document.getElementById("zhengzhi");
var fuwu=document.getElementById("fuwu"); if(name.value=="")
{
alert("名字不能为空");
name.focus();
return false;
} if(sex.value=="")
{
alert("性别不能为空");
sex.focus();
return false;
} if(minzu.value=="")
{
alert("民族不能为空");
minzu.focus();
return false;
} if(time.value=="")
{
alert("时间不能为空");
time.focus();
return false;
} if(age.value=="")
{
alert("年龄不能为空");
age.focus();
return false;
} if(zhengzhi.value=="")
{
alert("政治面目不能为空");
zhengzhi.focus();
return false;
}
if(fuwu.value=="")
{
alert("服务不能为空");
fuwu.focus();
return false;
}
--%>
function chackall() {
var a=document.getElementsByName('fuwu');
var b=0; //设定一个初始值
for(var i=0;i<a.length;i++)
{ if(a[i].checked==true)
{
return true;
}
else
{
if(a[i].checked==false)
{
b++; //如果方框没选中，该值会累加
}
if(b==a.length) //如果该值和方框的个数相同，那么就会报错
{
alert('服务类型最少选一个，最多选四个,请重新操作');
return false;
}
}
}
} </script>
</form> </body>
</html>
zc2.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body style="background: url(images/wen7.jpg); background-size:100%" text="yellow">
<h2 align="center">恭喜您添加用户成功</h2>
<a href="Themain.jsp"><h3 align="center">点击此处回到主页面!!!!!!</h4></a>
</body>
</html>
User.java
package com.newjavaweb;
public class User {
private String name;
private String sex;
private String minzu;
private String time;
private String age;
private String zhengzhi;
private String fuwu;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getMinzu() {
return minzu;
}
public void setMinzu(String minzu) {
this.minzu = minzu;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getZhengzhi() {
return zhengzhi;
}
public void setZhengzhi(String zhengzhi) {
this.zhengzhi = zhengzhi;
}
public String getFuwu() {
return fuwu;
}
public void setFuwu(String fuwu) {
this.fuwu = fuwu;
}
public User(String name, String sex, String minzu, String time, String age, String zhengzhi, String fuwu) {
super();
this.name = name;
this.sex = sex;
this.minzu = minzu;
this.time = time;
this.age = age;
this.zhengzhi = zhengzhi;
this.fuwu = fuwu;
} }
userdao.jsp
package Dao; import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import util.DBUtil;
import com.newjavaweb.User; public class userdao {
public boolean add(User user) {
String sql = "insert into text(name,sex,minzu,time,age,zhengzhi,fuwu)"
+ "values('" + user.getName() + "','" + user.getSex()+ "','" + user.getMinzu() + "','" + user.getTime()+ "','" + user.getAge()+ "','" + user.getZhengzhi()+ "','" + user.getFuwu()+ "')";
Connection conn = DBUtil.getConn();//调用方法连接数据库
Statement state = null;//创建一个Statement对象来执行静态的SQL语句
//Statement用于在已经建立数据库连接上发送静态的SQL语句
boolean f = false;
int a = 0 ; try { //监视大括号内的代码
state = conn.createStatement();//上面的是详解
a = state.executeUpdate(sql);
//执行指定的更新类的SQl语句，并返回操作结果的整型值
} catch (Exception e) { //捕获错误
e.printStackTrace();
} finally {
//关闭z 连接
DBUtil.close(state, conn);
} if (a > 0) {
f = true;
}
return f;
} public static List<User> loadview(String sql) {
// TODO Auto-generated method stub
String sql1="select * from text "+ sql;
List<User> list =new ArrayList<User>();
Connection con=null;
PreparedStatement psts=null;
ResultSet rs=null;
try
{
con=DBUtil.getConn();
//String sql="select * from course";
psts=con.prepareStatement(sql1);
rs=psts.executeQuery();//记录返回的结果
while(rs.next())
{ String name=rs.getString("name");
String sex=rs.getString("sex");
String nation=rs.getString("minzu");
String time=rs.getString("time");
String age=rs.getString("age");
String kind=rs.getString("zhengzhi");
String serve=rs.getString("fuwu"); User yi=new User(name,sex,nation,time,age,kind,serve);
list.add(yi);
} DBUtil.close(rs, psts, con);
} catch (SQLException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
} return list;
}
//return null; public String find(String name)
{
String sql = "select * from text where ";
if (name!= "") {
sql += "name like '" + name +"'";
}
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;
String username2="@";
try {
state = conn.createStatement();
rs = state.executeQuery(sql);
while (rs.next()) { username2 = rs.getString("name"); }
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
}
return username2;
} public String search(String name) {
String sql = "select * from text where ";
if (name!= "") {
sql += "name like '%" + name + "%'";
} Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;
String name2 = "@";
try {
state = conn.createStatement();
rs = state.executeQuery(sql);
while (rs.next()) { name2 = rs.getString("name"); }
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
} return name2;
} public String search1(String name,String sex,String minzu,String time,String zhengzhi,String fuwu) {
String sql = "select * from text where ";
if (name!= "") {
sql += "name like '%" + name + "%'";
}
else if(sex!="")
{
sql += "sex like '%" + sex + "%'";
}
else if(minzu!="")
{
sql += "minzu like '%" + minzu + "%'";
}
else if(time!="")
{
sql += "time like '%" + time + "%'";
}
else if(zhengzhi!="")
{
sql += "zhengzhi like '%" + zhengzhi + "%'";
}
else if(fuwu!="")
{
sql += "fuwu like '%" + fuwu + "%'";
}
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;
String name2 = "@";
try {
state = conn.createStatement();
rs = state.executeQuery(sql);
while (rs.next()) { name2 = rs.getString("name"); }
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
} return name2;
} public List<User> examine(String name1) throws ServletException, IOException {
String sql = "select * from text where ";
if (name1!= "") {
sql += "name like '%" + name1 + "%'";
}
List<User> list1 = new ArrayList<>();
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs1 = null;
try {
state = conn.createStatement();
rs1 = state.executeQuery(sql);
while (rs1.next()) {
String name=rs1.getString("name");
String sex=rs1.getString("sex");
String minzu=rs1.getString("minzu");
String time=rs1.getString("time");
String age=rs1.getString("age");
String zhengzhi=rs1.getString("zhengzhi");
String fuwu=rs1.getString("fuwu");
User bean2 = new User(name,sex,minzu,time,age,zhengzhi,fuwu);
list1.add(bean2);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs1, state, conn);
}
return list1;
} public List<User> theall() {
String sql = "select * from text";//全部
List<User> list = new ArrayList<>();
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;
try {
state = conn.createStatement();
rs = state.executeQuery(sql);
User bean = null;
while (rs.next()) {
String name = rs.getString("name");
String sex = rs.getString("sex");
String minzu = rs.getString("minzu");
String time = rs.getString("time");
String age= rs.getString("age");
String zhengzhi = rs.getString("zhengzhi");
String fuwu = rs.getString("fuwu");
bean = new User(name,sex,minzu,time,age,zhengzhi,fuwu);
list.add(bean);
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
}
return list;
} public boolean delete (String name) {
boolean f = false;
String sql = "delete from text where name='" + name + "'";
Connection conn = DBUtil.getConn();
Statement state = null;
int a = 0;
try {
state = conn.createStatement();
a = state.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
}
finally {
DBUtil.close(state, conn);
} if (a > 0) {
f = true;
}
return f;
} public User getUserbyzhanghu(String name5) {
String sql = "select * from text where name ='" + name5 + "'";
Connection conn = DBUtil.getConn();
Statement state = null;
ResultSet rs = null;
User user3 = null;
try {
state = conn.createStatement();
rs = state.executeQuery(sql);
while (rs.next()) {
String name = rs.getString("name");
String sex = rs.getString("sex");
String minzu = rs.getString("minzu");
String time = rs.getString("time");
String age= rs.getString("age");
String zhengzhi = rs.getString("zhengzhi");
String fuwu = rs.getString("fuwu");
user3= new User(name,sex,minzu,time,age,zhengzhi,fuwu);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
DBUtil.close(rs, state, conn);
}
return user3;
} public boolean update(User user,String zh)
{
String sql="update text set name='" + user.getName() + "',sex='" + user.getSex() + "',minzu='" + user.getMinzu() + "',time='" + user.getTime() + "',age='" + user.getAge() + "',zhengzhi='" + user.getZhengzhi() + "',fuwu='" + user.getFuwu() + "' where name='" + zh + "'";
Connection conn = DBUtil.getConn();
Statement state = null;
boolean f = false;
int a = 0; try {
state = conn.createStatement();
a = state.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
} finally {
DBUtil.close(state, conn);
} if (a > 0) {
f = true;
}
return f;
}
}
Servlet.java
package servlet; import java.io.IOException;
import java.util.ArrayList; import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import Dao.userdao;
import com.newjavaweb.User; /**
* Servlet implementation class Servlet
*/
@WebServlet("/Servlet")
public class Servlet extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public Servlet() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub request.setCharacterEncoding("utf-8");
response.setContentType("textml;charset=utf-8"); userdao dao=new userdao();
java.util.List<User> list= new ArrayList<User>();
String p[] = new String[5];//获得条件
String s[] = new String[5];//获得内容
String g[] = new String[5];//获得关系
String f[] = new String[5];//获得精确或者模糊
String number = null; //String number1 = null;
number=request.getParameter("number1");
//number1=request.getParameter("number2");
int n = Integer.parseInt(number);//接收条件的个数
//int n1 = Integer.parseInt(number1);// յĹ ϵ ĸ
for(int i=1;i<=n;i++)
{
p[i]= (String) request.getParameter("s"+i);
s[i]=(String)request.getParameter("shuru"+i);
f[i]=(String)request.getParameter("c"+i); System.out.println("精确还是模糊 "+f[i]);
System.out.println("条件 "+p[i]);
System.out.println("输入 "+s[i]); if(p[i].equals("名字"))
{
p[i] = "name";
}
else if(p[i].equals("性别"))
{
p[i] = "sex";
}else if(p[i].equals("民族"))
{
p[i] = "minzu";
}else if(p[i].equals("注册日期"))
{
p[i] = "time";
}else if(p[i].equals("年龄"))
{
p[i] = "age";
} } for(int i=1;i<n;i++)
{
g[i]=(String) request.getParameter("g"+i);
if(g[i].equals("且")) {
g[i]="and";
}else if(g[i].equals("或")) {
g[i]="or";
} System.out.println("且或"+g[i]);
} String sql="where ";
for(int i=1;i<n;i++)
{
if(s[i].equals(""))
{
continue;
}
if(f[i].equals("精确"))
{
sql=sql+p[i]+"='"+s[i]+"'"+" "+g[i]+" ";
}else if(f[i].equals("模糊"))
{
sql=sql+p[i]+" "+"LIKE"+" "+"'%"+s[i]+"%'"+" "+g[i]+" ";
} } if(f[n].equals("精确"))
{
sql = sql + p[n]+"="+"'"+s[n]+"'";
} else {
sql = sql + p[n]+" "+"LIKE"+" "+"'%"+s[n]+"%'";
}
// }
if(n==1&&s[1].equals(""))
{
System.out.println("什么也没传！");
sql="";
}
list = dao.loadview(sql); if(list.size()!=0) {
request.setAttribute("course11",list);
request.setAttribute("message", "查询成功");
request.getRequestDispatcher("selectmore_show.jsp").forward(request,response);
}
else {
request.setAttribute("message", "查询失败");
request.getRequestDispatcher("selectmore.jsp").forward(request,response);
}
// HttpSession session = request.getSession();
// session.setAttribute("tiaojian", list);
//// int servletid=1;
//// request.setAttribute("list", list);
//// request.setAttribute("servletid", servletid);
// try {
//// request.getRequestDispatcher("/admin/123.jsp").forward(request, response);
// response.sendRedirect(request.getContextPath()+"ow.jsp");
// } catch (IOException e) {
// // TODO Զ ɵ catch
// e.printStackTrace();
// } } /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
} }
UserServlet.java
package servlet; import java.io.IOException;
import java.sql.ResultSet; import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.JOptionPane; import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;
import com.newjavaweb.User;
import Dao.userdao;
import util.DBUtil; import java.util.List;
/**
* Servlet implementation class UserServlet
*/
@WebServlet("/UserServlet")
public class UserServlet extends HttpServlet {
static String wen;
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public UserServlet() {
super();
// TODO Auto-generated constructor stub
}
userdao dao = new userdao(); protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
String method = req.getParameter("method");
if ("add".equals(method))
{
add(req, resp);
}
else if("search".equals(method))
{
search(req, resp);
}
else if("examine".equals(method))
{
examine(req,resp);
}
else if("delete".equals(method))
{
delete(req,resp);
}
else if("allall".equals(method))
{
allall(req,resp);
}
else if("look".equals(method))
{
look(req,resp);
}
else if("update".equals(method))
{
update(req,resp);
}
else if("deletecheck".equals(method))
{
deletecheck(req,resp);
}
else if("examine33".equals(method))
{
examine33(req,resp);
}
} private void search(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
// TODO Auto-generated method stub
req.setCharacterEncoding("utf-8"); String zhanghu = req.getParameter("zhanghu");
String psw = req.getParameter("psw");
String rpassword = dao.search(zhanghu);
String yanzheng1=req.getParameter("code");
String yanzheng=(String)req.getSession().getAttribute("code"); if(!yanzheng1.equals(yanzheng))
{
req.setAttribute("message", "验证码错误");
req.getRequestDispatcher("login.jsp").forward(req,resp);
} if(psw.equals(rpassword)) {
//JOptionPane.showMessageDialog(null,"登陆成功！");
req.setAttribute("message", "登陆成功！");
req.getRequestDispatcher("NewFile.jsp").forward(req,resp);
}
else {
//JOptionPane.showMessageDialog(null,"账号不存在或密码错误！");
req.setAttribute("message", "账号不存在或密码错误！");
req.getRequestDispatcher("login.jsp").forward(req,resp);
}
}
private void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
// TODO Auto-generated method stub
String name = req.getParameter("name");
String sex=req.getParameter("sex");
String minzu=req.getParameter("minzu");
String time=req.getParameter("time");
String age=req.getParameter("age");
String zhengzhi=req.getParameter("zhengzhi"); String [] fuwus = req.getParameterValues("fuwu");//复选框
StringBuffer buf = new StringBuffer();
for(String fuwu1 : fuwus){
buf.append(fuwu1);
}
String fuwu = buf.toString(); User user= new User(name,sex,minzu,time,age,zhengzhi,fuwu); String rusername = dao.find(name); if(!name.equals(rusername)) {
dao.add(user); req.setAttribute("message", "添加成功!");
req.getRequestDispatcher("UserServlet?method=allall").forward(req, resp);
}else { req.setAttribute("message", "账户重复，请重新输入!");
req.getRequestDispatcher("zc.jsp").forward(req, resp);
}
} private void deletecheck(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
String name =req.getParameter("name4");
String rusername = dao.find(name);
if(!name.equals(rusername))
{
req.setAttribute("message", "用户不存在请重新输入");
req.getRequestDispatcher("delete.jsp").forward(req, resp);
return;
}
List<User> Thething1 =dao.examine(name);
req.setAttribute("Thething1", Thething1);
req.getRequestDispatcher("deletecheck2.jsp").forward(req, resp);
} private void delete(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
req.setCharacterEncoding("utf-8");
String name =req.getParameter("name");
boolean wen=dao.delete(name);
if(wen)
{
req.setAttribute("message", "删除成功！");
req.getRequestDispatcher("delete1.jsp").forward(req,resp);
}
else
{
req.setAttribute("message", "此用户不存在，删除失败");
req.getRequestDispatcher("delete.jsp").forward(req,resp);
} } private void examine(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
String name =req.getParameter("name3");
String sex =req.getParameter("sex3");
String minzu =req.getParameter("minzu3");
String time =req.getParameter("time3");
String zhengzhi =req.getParameter("zhengzhi3");
String fuwu =req.getParameter("fuwu3");
String rusername=dao.search1(name,sex,minzu,time,zhengzhi,fuwu); if(!name.equals(rusername))
{
req.setAttribute("message", "用户不存在请重新输入");
req.getRequestDispatcher("Examine.jsp").forward(req, resp);
return;
}
List<User> Thething =dao.examine(name);
req.setAttribute("Thething", Thething);
req.getRequestDispatcher("examine1.jsp").forward(req, resp);
}
private void examine33(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
String name =req.getParameter("name");
List<User> Thething2 =dao.examine(name);
req.setAttribute("Thething2", Thething2);
req.getRequestDispatcher("examine2.jsp").forward(req, resp);
}
private void allall(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
List<User> allthing = dao.theall();
req.setAttribute("allthing", allthing);
req.getRequestDispatcher("checkall.jsp").forward(req,resp);
}
private void look(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
String name5 = req.getParameter("name5");
wen=name5;
String q1=dao.find(name5);
if(q1.equals("@"))
{
req.setAttribute("message", "此用户不存在，不能进行修改");
req.getRequestDispatcher("updatesome.jsp").forward(req,resp);
return;
}
User user3 = dao.getUserbyzhanghu(name5);
req.setAttribute("user3", user3);
req.getRequestDispatcher("updatesome1.jsp").forward(req,resp);
} private void update(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException
{
req.setCharacterEncoding("utf-8");
String name = req.getParameter("name6");
String sex=req.getParameter("sex6");
String minzu=req.getParameter("minzu6");
String time=req.getParameter("time6");
String age=req.getParameter("age6");
String zhengzhi=req.getParameter("zhengzhi6"); String [] fuwus = req.getParameterValues("fuwu6");//复选框
StringBuffer buf = new StringBuffer();
for(String fuwu1 : fuwus){
buf.append(fuwu1);
}
String fuwu = buf.toString(); User user= new User(name,sex,minzu,time,age,zhengzhi,fuwu);
dao.update(user,name);
req.setAttribute("message", "修改成功");
req.getRequestDispatcher("updatesome2.jsp").forward(req,resp);
}
}
DBUtile.java
package util; //数据库连接
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement; /**
* 数据库连接工具
* @author Zheng
*
*/
public class DBUtil { public static String db_url = "jdbc:mysql://localhost:3306/studentwen?useSSL=false";
public static String db_user = "root";
public static String db_pass = "511924"; public static Connection getConn () {
Connection conn = null; try {
Class.forName("com.mysql.jdbc.Driver");//加载驱动
conn = DriverManager.getConnection(db_url, db_user, db_pass);//通过输入的用户名还有密码来建立一个到数据库的连接主要是调用connect（）方法
} catch (Exception e) {
e.printStackTrace();
} return conn;
} /**
* 关闭连接
* @param state
* @param conn
*/
public static void close (Statement state, Connection conn) {
if (state != null) {
try {
state.close();
} catch (SQLException e) {
e.printStackTrace();
}
} if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} public static void close (ResultSet rs, Statement state, Connection conn) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
} if (state != null) {
try {
state.close();
} catch (SQLException e) {
e.printStackTrace();
}
} if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
} }
以上是这次数据库的增删改查的全部代码。基本上是比较全的了。包括的方面也比较多。
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