jsp连接数据库增删改查

一,创建表

二.将jar包复制导入到lib文件夹下

三.创建工具包连接数据库

package com.bill.util;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DBUtil {

    public static String db_url = "jdbc:mysql://localhost:3306/test?useSSL=false";
    public static String db_user = "root";//账号
    public static String db_pass = "mm123456";//密码

    public static Connection getConn () {
        Connection conn = null;

        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(db_url, db_user, db_pass);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return 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();
            }
        }
    }

}

四.初始化成员函数

package com.bill.been;

public class Bill {
    private int id;
    private String type;
    private String year;
    private String month;
    private String day;
    private String income;
    private String pay;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getType() {
        return type;
    }
    public void setType(String type) {
        this.type = type;
    }
    public String getYear() {
        return year;
    }
    public void setYear(String year) {
        this.year = year;
    }
    public String getMonth() {
        return month;
    }
    public void setMonth(String month) {
        this.month = month;
    }
    public String getDay() {
        return day;
    }
    public void setDay(String day) {
        this.day = day;
    }
    public String getIncome() {
        return income;
    }
    public void setIncome(String income) {
        this.income = income;
    }
    public String getPay() {
        return pay;
    }
    public void setPay(String pay) {
        this.pay = pay;
    }

    public Bill(int id,String type,String year,String month,String day,String income,String pay)
    {
        this.id=id;
        this.type=type;
        this.year=year;
        this.month=month;
        this.day=day;
        this.income=income;
        this.pay=pay;
    }
    public Bill(String type,String year,String month,String day,String income,String pay)
    {
        this.type=type;
        this.year=year;
        this.month=month;
        this.day=day;
        this.income=income;
        this.pay=pay;
    }
}

五.查找数据库 dao层

package com.bill.dao;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import com.bill.util.DBUtil;
import com.bill.been.Bill;
@SuppressWarnings("unused")
public class BillDao {
//-----------------------------------------------------------------------------------------------------------------------------
    public boolean add(Bill bill) {
        String sql = "insert into bill(type,year,month,day,income,pay) values('" + bill.getType() + "','" + bill.getYear() + "','"+bill.getMonth()+"','"+bill.getDay()+"','"+bill.getIncome()+"','"+bill.getPay()+"')";
        Connection conn = DBUtil.getConn();//调用方法连接数据库
        Statement state = null;
        boolean f = false;
        int a = 0 ;

        try {       //监视大括号内的代码
            state = conn.createStatement();
            a = state.executeUpdate(sql);
        } 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 Bill getBillById(int id) {
        String sql = "select * from bill where id ='" + id + "'";
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;
        Bill bill = null;

        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            while (rs.next()) {
                String type = rs.getString("type");
                String year = rs.getString("year");
                String month = rs.getString("month");
                String day = rs.getString("day");
                String income = rs.getString("income");
                String pay = rs.getString("pay");
                bill = new Bill(id, type, year, month,day,income,pay);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }

        return bill;
    }

    public List<Bill> dellist() {
        String sql = "select * from bill";
        List<Bill> dellist = new ArrayList<>();
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;

        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            Bill bean = null;
            while (rs.next()) {
                int id = rs.getInt("id");
                String type2 = rs.getString("type");
                String year2 = rs.getString("year");
                String month2 = rs.getString("month");
                String day2 = rs.getString("day");
                String income2=rs.getString("income");
                String pay2=rs.getString("pay");
                bean = new Bill(id, type2, year2, month2,day2,income2,pay2);
                dellist.add(bean);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }

        return dellist;
    }

    public boolean delete (int id) {
        boolean f = false;
        String sql = "delete from bill where id='" + id + "'";
        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 List<Bill> modifylist() {
        String sql = "select * from bill";
        List<Bill> modifylist = new ArrayList<>();
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;

        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            Bill bean = null;
            while (rs.next()) {
                int id = rs.getInt("id");
                String type2 = rs.getString("type");
                String year2 = rs.getString("year");
                String month2 = rs.getString("month");
                String day2 = rs.getString("day");
                String income2=rs.getString("income");
                String pay2=rs.getString("pay");
                bean = new Bill(id, type2, year2, month2,day2,income2,pay2);
                modifylist.add(bean);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }

        return modifylist;
    }

    public boolean modify(Bill bill) {
        String sql = "update bill set type='" + bill.getType() + "', year='" + bill.getYear() + "',month='" + bill.getMonth()
        + "',day='"+bill.getDay()+"',income='"+bill.getIncome()+"',pay='"+bill.getPay()+"'where id='" + bill.getId() + "'";
        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;
    }
//------------------------------------------------------------------------------------------------------------------------------
    public List<Bill> search(String type,String year,String month,String day,String income,String pay) {
        String sql = "select * from bill where ";
        if (type != "") {
            sql += "type like '%" + type + "%'";
        }
        if (year != "") {
            sql += "year like '%" + year + "%'";
        }
        if (month != "") {
            sql += "month like '%" + month + "%'";
        }
        if (day != "") {
            sql += "day like '%" + day + "%'";
        }if (income != "") {
            sql += "income like '%" + income + "%'";
        }if (pay != "") {
            sql += "pay like '%" + pay + "%'";
        }
        List<Bill> list = new ArrayList<>();
        Connection conn = DBUtil.getConn();
        Statement state = null;
        ResultSet rs = null;

        try {
            state = conn.createStatement();
            rs = state.executeQuery(sql);
            Bill bean = null;
            while (rs.next()) {
                int id = rs.getInt("id");
                String type2 = rs.getString("type");
                String year2 = rs.getString("year");
                String month2 = rs.getString("month");
                String day2 = rs.getString("day");
                String income2 = rs.getString("income");
                String pay2 = rs.getString("pay");
                bean = new Bill(id, type2, year2, month2,day2,income2,pay2);
                list.add(bean);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            DBUtil.close(rs, state, conn);
        }

        return list;
    }

}

.六.页面的交互

package com.bill.servlet;
import java.io.IOException;
import java.util.List;

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 com.bill.dao.BillDao;
import com.bill.been.Bill;
@WebServlet("/BillServlet")
public class BillServlet extends HttpServlet{
    private static final long serialVersionUID = 1L;

    public BillServlet() {
        super();
    }
    BillDao dao=new BillDao();

    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 ("getbillbyid".equals(method)) {
            getBillById(req, resp);
        }else if ("dellist".equals(method)) {
            dellist(req,resp);
        }else if ("delete".equals(method)) {
            delete(req,resp);
        }else if ("getbillbyid2".equals(method)) {
            getBillById2(req, resp);
        }else if ("modifylist".equals(method)) {
            modifylist(req,resp);
        }else if ("modify".equals(method)) {
            modify(req,resp);
        }else if ("search".equals(method)) {
            search(req,resp);
        }
    }
//------------------------------------------------------------------------------------------------------
        private void add(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
            // TODO Auto-generated method stub
            String type = req.getParameter("type");
            String year = req.getParameter("year");
            String month = req.getParameter("month");
            String day = req.getParameter("day");
            String income = req.getParameter("income");
            String pay = req.getParameter("pay");

            Bill bill=new Bill(type,year,month,day,income,pay);
            if(dao.add(bill)) {
                req.setAttribute("message", "保存成功!");
                req.getRequestDispatcher("add.jsp").forward(req, resp);
            }else {
                req.setAttribute("message", "保存失败!");
                req.getRequestDispatcher("add.jsp").forward(req, resp);
            }
        }
        //------------------------------------------------------------------------------------------------------        

        private void getBillById(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            int id = Integer.parseInt(req.getParameter("id"));
            Bill bill = dao.getBillById(id);
            req.setAttribute("bill", bill);
            req.getRequestDispatcher("delete.jsp").forward(req,resp);

        }

        private void dellist(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
            req.setCharacterEncoding("utf-8");
            List<Bill> bills = dao.dellist();
            req.setAttribute("bills", bills);
            req.getRequestDispatcher("dellist.jsp").forward(req,resp);

        }

        private void delete(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            int id = Integer.parseInt(req.getParameter("id"));
            dao.delete(id);
            req.setAttribute("message", "删除成功");
            req.getRequestDispatcher("index.jsp").forward(req,resp);
        }
//---------------------------------------------------------------------------------------------------------------------------------
        private void getBillById2(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            int id = Integer.parseInt(req.getParameter("id"));
            Bill bill = dao.getBillById(id);
            req.setAttribute("bill", bill);
            req.getRequestDispatcher("modify.jsp").forward(req,resp);

        }

        private void modifylist(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            List<Bill> bills = dao.modifylist();
            req.setAttribute("bills",bills);
            req.getRequestDispatcher("modifylist.jsp").forward(req,resp);
        }

        private void modify(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            int id = Integer.parseInt(req.getParameter("id"));
            String type = req.getParameter("type");
            String year = req.getParameter("year");
            String month = req.getParameter("month");
            String day = req.getParameter("day");
            String income = req.getParameter("income");
            String pay = req.getParameter("pay");
            Bill bill = new Bill(id, type, year, month,day,income,pay);

            dao.modify(bill);
            req.setAttribute("message", "修改成功");
            req.getRequestDispatcher("BillServlet?method=modifylist").forward(req,resp);
        }

//---------------------------------------------------------------------------------------------------------------------------------    

        private void search(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
            req.setCharacterEncoding("utf-8");
            String type = req.getParameter("type");
            String year = req.getParameter("year");
            String month = req.getParameter("month");
            String day = req.getParameter("day");
            String income = req.getParameter("income");
            String pay = req.getParameter("pay");
            List<Bill> bills = dao.search(type,year,month,day,income,pay);
            req.setAttribute("bills", bills);
            req.getRequestDispatcher("searchlist.jsp").forward(req,resp);
        }
}

主页面

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>首页</title>
<style>
    .a{
        font-size: 26px;
        margin-top: 20px;
    }
</style>
</head>
<body>
<div align="center">
        <h1 style="color:bluegreen;">记帐本</h1>
        <div class="a">
            <a href="add.jsp">账单记录</a>
        </div>
        <div class="a">
            <a href="BillServlet?method=dellist">账单删除</a>
        </div>
        <div class="a">
            <a href="BillServlet?method=modifylist">修改账单</a>
        </div>
        <div class="a">
            <a href="search.jsp">查询账单</a>
        </div>
</div>
</body>
</html>

添加

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>记录账单</title>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){

    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">记账</h1>

        <form action="BillServlet?method=add" method="post" onsubmit="return check()">
            <div class="a">
                类型<input type="text" id="type" name="type"/>
            </div>
            <div class="a">
                年<input type="text" id="year" name="year" />
            </div>
            <div class="a">
                月<input type="text" id="month" name="month"/>
            </div>
            <div class="a">
                日<input type="text" id="day" name="day"/>
            </div>
            <div class="a">
                收入<input type="text" id="income" name="income"/>
            </div>
            <div class="a">
                支出<input type="text" id="pay" name="pay"/>
            </div>

            <div class="a">
                <button type="submit" class="b">保&nbsp;&nbsp;&nbsp;存</button>
            </div>
            <div class="a">
            <a href="index.jsp" >返回</a>
            </div>
        </form>
    </div>

</body>
</html>

删除

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){

    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">账单信息列表</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>id</td>
                <td>账单类型</td>
                <td>年</td>
                <td>月</td>
                <td>日</td>
                <td>收入</td>
                <td>支出</td>
                <td align="center" colspan="2">操作</td>
            </tr>
            <c:forEach items="${bills}" var="xm">
                <tr>
                    <td>${xm.id}</td>
                    <td>${xm.type}</td>
                    <td>${xm.year}</td>
                    <td>${xm.month}</td>
                    <td>${xm.day}</td>
                    <td>${xm.income}</td>
                    <td>${xm.pay}</td>
                    <td><a href="BillServlet?method=getbillbyid&id=${xm.id}">删除</a></td>
                </tr>
            </c:forEach>
        </table>
    </div>
</body>
</html>

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
<%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){

    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>

    <div align="center">
        <h1 style="color: red;">账单信息删除</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>账单类型</td>
                <td>${bill.type}</td>
            </tr>
            <tr>
                <td>年</td>
                <td>${bill.year}</td>
            </tr>
            <tr>
                <td>月</td>
                <td>${bill.month}</td>
            </tr>
            <tr>
                <td>日</td>
                <td>${bill.day}</td>
            </tr>
            <tr>
                <td>收入</td>
                <td>${bill.income}</td>
            </tr>
            <tr>
                <td>支出</td>
                <td>${bill.pay}</td>
            </tr>
        </table>
        <div class="a">
            <a onclick="return check()" href="BillServlet?method=delete&id=${bill.id}">删&nbsp;&nbsp;&nbsp;&nbsp;除</a>
        </div>
    </div>
    <script type="text/javascript">
        function check() {
            if (confirm("真的要删除吗？")){
                return true;
            }else{
                return false;
            }
        }
    </script>
</body>
</html>

修改

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){

    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: red;">账单信息列表</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>id</td>
                <td>账单类型</td>
                <td>年</td>
                <td>月</td>
                <td>日</td>
                <td>收入</td>
                <td>支出</td>
                <td align="center" colspan="2">操作</td>
            </tr>
            <c:forEach items="${bills}" var="item">
                <tr>
                    <td>${item.id}</td>
                    <td>${item.type}</td>
                    <td>${item.year}</td>
                    <td>${item.month}</td>
                    <td>${item.day}</td>
                    <td>${item.income}</td>
                    <td>${item.pay}</td>
                    <td><a href="BillServlet?method=getbillbyid2&id=${item.id}">修改</a></td>
                </tr>
            </c:forEach>
        </table>
    </div>
</body>
</html>

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
</style>
</head>
<body>
    <%
         Object message = request.getAttribute("message");
         if(message!=null && !"".equals(message)){

    %>
         <script type="text/javascript">
              alert("<%=request.getAttribute("message")%>");
         </script>
    <%} %>
    <div align="center">
        <h1 style="color: cyan;">记账信息修改</h1>
        <a href="index.jsp">返回主页</a>
        <form action="BillServlet?method=modify" method="post" onsubmit="return check()">
            <div class="a">
                账单类型<input type="text" id="type" name="type" value="${bill.type}"/>
            </div>
            <div class="a">
                年<input type="text" id="year" name="year" value="${bill.year}"/>
            </div>
            <div class="a">
                月<input type="text" id="month" name="month" value="${bill.month}"/>
            </div>
            <div class="a">
                日<input type="text" id="day" name="day" value="${bill.day}"/>
            </div>
            <div class="a">
                收入<input type="text" id="income" name="income" value="${bill.income}"/>
            </div>
            <div class="a">
                支出<input type="text" id="pay" name="pay" value="${bill.pay}"/>
            </div>

            <input type="hidden" id="id" name="id" value="${bill.id}"/>
            <div class="a">
                <button type="submit" class="b">修&nbsp;&nbsp;&nbsp;改</button>
            </div>
        </form>
    </div>

</body>
</html>

查找

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
</style>
</head>
<body>
    <div align="center">
        <h1 style="color: cyan;">账单信息查询</h1>
        <a href="index.jsp">返回主页</a>
        <form action="BillServlet?method=search" method="post" onsubmit="return check()">
            <div class="a">
                账单类型<input type="text" id="type" name="type"/>
            </div>
            <div class="a">
                年<input type="text" id="year" name="year" />
            </div>
            <div class="a">
                月<input type="text" id="month" name="month" />
            </div>
            <div class="a">
                日<input type="text" id="day" name="day" />
            </div>
            <div class="a">
                收入<input type="text" id="income" name="income" />
            </div>
            <div class="a">
                支出<input type="text" id="pay" name="pay" />
            </div>
            <div class="a">
                <button type="submit" class="b">查&nbsp;&nbsp;&nbsp;&nbsp;询</button>
            </div>
        </form>
    </div>
</body>
</html>

<%@ 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>
<style>
    .a{
        margin-top: 20px;
    }
    .b{
        font-size: 20px;
        width: 160px;
        color: white;
        background-color: greenyellow;
    }
    .tb, td {
        border: 1px solid black;
        font-size: 22px;
    }
</style>
</head>
<body>
    <div align="center">
        <h1 style="color: red;">账单信息列表</h1>
        <a href="index.jsp">返回主页</a>
        <table class="tb">
            <tr>
                <td>id</td>
                <td>粘单类型</td>
                <td>年</td>
                <td>月</td>
                <td>日</td>
                <td>收入</td>
                <td>支出</td>
            </tr>
            <!-- forEach遍历出adminBeans -->
            <c:forEach items="${bills}" var="item" varStatus="status">
                <tr>
                    <td>${item.id}</td>
                    <td><a>${item.type}</a></td>
                    <td>${item.year}</td>
                    <td>${item.month}</td>
                    <td>${item.day}</td>
                    <td>${item.income}</td>
                    <td>${item.pay}</td>
                </tr>
            </c:forEach>
        </table>
    </div>
</body>
</html>