JavaWeb_(Hibernate框架)Hibernate论坛项目中多对多案例
基于SSH论坛小型项目 传送门
用户和发帖进行举例
多对多关系：多个用户可以回复多个帖子
因此引入了一张回复表，用来保存用户id和帖子id
CREATE TABLE `hforum`.`answer` (
`id` VARCHAR(50) NOT NULL,
`userid` VARCHAR(50) NULL DEFAULT NULL,
`pasteid` VARCHAR(50) NULL DEFAULT NULL,
`content` VARCHAR(255) NULL,
PRIMARY KEY (`id`));
Gary.sql
数据库中帖子数据(测试时候是没有的~)
用户在login.jsp中进行登陆，登陆成功后跳转index.jsp，访问add.jsp后，用户可以发起新帖，用户发帖后，再访问detail.jsp，可以对发布的帖子进行回复。(注意：发布帖子时有一个pasteid，要保证回复帖子时回复该pasteid)
用户回帖后，数据库中answer表存放的数据
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<!DOCTYPE html>
<html> <head>
<meta charset="UTF-8"> <link rel="stylesheet" href="css/head.css" />
<link rel="stylesheet" type="text/css" href="css/login.css" />
</head> <body>
<div class="dvhead">
<div class="dvlogo">
<a href="index.html">你问我答</a>
</div>
<div class="dvsearch">10秒钟注册账号，找到你的同学</div>
<div class="dvreg">
已有账号，立即 <a href="login.html">登录</a>
</div>
</div>
<section class="sec">
<form action="${pageContext.request.contextPath }/UserAction_login"
method="post">
<div class="register-box">
<label for="username" class="username_label"> 用 户 名 <input
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<div class="tips"></div>
</div>
<div class="register-box">
<label for="username" class="other_label"> 密 码 <input
maxlength="20" type="password" name="password"
placeholder="建议至少使用两种字符组合" />
</label>
<div class="tips" style="color: red"><s:property value="error"/> </div>
</div> <div class="arguement">
<input type="checkbox" id="xieyi" /> 阅读并同意 <a
href="javascript:void(0)">《你问我答用户注册协议》</a> <a href="register.html">没有账号,立即注册</a>
<div class="tips"></div>
</div>
<div class="submit_btn">
<button type="submit" id="submit_btn">立 即 登录</button>
</div>
</form>
</section>
<script src="js/index.js" type="text/javascript" charset="utf-8"></script>
</body>
login.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<link rel="stylesheet" type="text/css" href="css/index.css">
</head>
<div class="dvhead">
<div class="dvlogo"><a href="index.html">你问我答</a></div>
<div class="dvsearch">10秒钟注册账号，找到你的同学</div>
<div class="dvreg">
已有账号，立即 <a href="login.html">登录</a>
</div>
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<div class="tabheads tabcurrent">全部问题</div>
<div class="tabheads">我的问题</div>
<div class="tabheads">关注问题</div>
<div class="tabheads">问题标签</div>
</div>
<div class="tabContent">
<div class="dvtags">
<a class="curenttag">待解决</a><span class="line"></span><a>高分</a><span
class="line"></span><a>新回答</a><span class="line"></span><a>已解决</a>
</div>
<div class="tab">
<div class="dvques">
<div class="quesCount">
<div class="count">8</div>
<div class="ques">回答数</div>
</div>
<div class="quesContent">
<div class="quesTitle">
500
<image src="data:images/bean.jpg" class="bean"> <span
class="spanques">Excel开发的问题</span>
</div>
<div class="qContent">以前都是OWC控件在程序中做Excel做操作以前都是OWC控件在程序中做Excel做操作，主要包裹以前裹做Excel做操作，主要包裹以前都是OWC控件在程序中做Excel做操作，主要包裹主要包裹以前都是主要包中做Excel做操作，主要包裹，主要包裹...</div>
<div class="tags">
<span class="tag">excel</span><span class="tag">程序</span>
</div>
<div class="quesUser">
<image src="data:images/0.gif" class="imguser" />
<div class="userName">
张大值
<div class="liulan">浏览(9) 30分钟前</div>
</div> </div>
</div>
</div>
<div class="dvques">
<div class="quesCount">
<div class="count">8</div>
<div class="ques">回答数</div>
</div>
<div class="quesContent">
<div class="quesTitle">
500
<image src="data:images/bean.jpg" class="bean"> <span
class="spanques">Excel开发的问题</span>
</div>
<div class="qContent">以前都是OWC控件在程序中做Excel做操作，以前都是OWC控件在程序中做Excel做操作主要包裹以前裹做Excel做操作，主要包裹以前都是OWC控件在程序中做Excel做操作，主要包裹主要包裹以前都是主要包中做Excel做操作，主要包裹，主要包裹...</div>
<div class="tags">
<span class="tag">excel</span><span class="tag">程序</span>
</div>
<div class="quesUser">
<image src="data:images/0.gif" class="imguser" />
<div class="userName">
张大值
<div class="liulan">浏览(9) 30分钟前</div>
</div> </div>
</div>
</div>
<div class="dvques">
<div class="quesCount">
<div class="count">8</div>
<div class="ques">回答数</div>
</div>
<div class="quesContent">
<div class="quesTitle">
500
<image src="data:images/bean.jpg" class="bean"> <span
class="spanques">Excel开发的问题</span>
</div>
<div class="qContent">以前都是OWC控件在程序中做Excel做操作，以前都是OWC控件在程序中做Excel做操作主要包裹以前裹做Excel做操作，主要包裹以前都是OWC控件在程序中做Excel做操作，主要包裹主要包裹以前都是主要包中做Excel做操作，主要包裹，主要包裹...</div>
<div class="tags">
<span class="tag">excel</span><span class="tag">程序</span>
</div>
<div class="quesUser">
<image src="data:images/0.gif" class="imguser" />
<div class="userName">
张大值
<div class="liulan">浏览(9) 30分钟前</div>
</div> </div>
</div>
</div>
<div class="dvques">
<div class="quesCount">
<div class="count">8</div>
<div class="ques">回答数</div>
</div>
<div class="quesContent">
<div class="quesTitle">
500
<image src="data:images/bean.jpg" class="bean"> <span
class="spanques">Excel开发的问题</span>
</div>
<div class="qContent">以前都是OWC控件在程序中做Excel做操作，以前都是OWC控件在程序中做Excel做操作主要包裹以前裹做Excel做操作，主要包裹以前都是OWC控件在程序中做Excel做操作，主要包裹主要包裹以前都是主要包中做Excel做操作，主要包裹，主要包裹...</div>
<div class="tags">
<span class="tag">excel</span><span class="tag">程序</span>
</div>
<div class="quesUser">
<image src="data:images/0.gif" class="imguser" />
<div class="userName">
张大值
<div class="liulan">浏览(9) 30分钟前</div>
</div> </div>
</div>
</div>
<div class="dvques">
<div class="quesCount">
<div class="count">8</div>
<div class="ques">回答数</div>
</div>
<div class="quesContent">
<div class="quesTitle">
500
<image src="data:images/bean.jpg" class="bean"> <span
class="spanques">Excel开发的问题</span>
</div>
<div class="qContent">以前都是OWC控件在程序中做Excel做操作，主要包裹以前裹做Excel做操作，主要包裹以前都是OWC控件在程序中做Excel做操作，主要包裹主要包裹以前都是主要包中做Excel做操作，主要包裹，主要包裹...</div>
<div class="tags">
<span class="tag">excel</span><span class="tag">程序</span>
</div>
<div class="quesUser">
<image src="data:images/0.gif" class="imguser" />
<div class="userName">
张大值
<div class="liulan">浏览(9) 30分钟前</div>
</div> </div>
</div>
</div> </div>
<div class="tab hidden">2</div>
<div class="tab hidden">3</div>
<div class="tab hidden">4</div>
</div>
</div>
<div class="dvquesright">
<div>
<buton class="btnques" onclick="location.href='add.jsp'">提个问题</buton>
</div>
<div class="dvorder">
<div class="orderTitle">专家排行榜</div>
<div class="users">
<image class="userface" src="data:images/0.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/1.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/2.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/3.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/4.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/5.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div>
<div class="users">
<image class="userface" src="data:images/6.gif" />
<div class="dvuser">
<div class="userTitle">陈有龙</div>
<div class="userdeital">大牛6级 豆:14006</div>
</div>
</div> </div> </div> </div>
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<body>
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index.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%> <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>问题详情</title>
<meta name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=1">
<meta name="keywords" content="fly,layui,前端社区">
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<link rel="stylesheet" href="res/layui/css/layui.css">
<link rel="stylesheet" href="res/css/global.css">
<script src="res/layui/layui.js"></script>
<script src="js/jquery.js"></script>
<style type="text/css" rel="stylesheet">
form {
margin: 0;
} .editor {
margin-top: 5px;
margin-bottom: 5px;
}
</style> </head>
<body>
<iframe src="head.html" scrolling="no" width="100%" height="65px"></iframe>
<div class="main layui-clear">
<div class="wrap">
<div class="content detail">
<div class="fly-panel detail-box">
<h1>帖子标题</h1>
<div class="fly-tip fly-detail-hint" data-id="">
<span class="fly-tip-stick">置顶帖</span><span class="jie-admin">
<a href="">点击置顶</a>
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<div class="fly-list-hint">
<i class="iconfont" title="回答"></i> 2
</div>
</div>
<div class="detail-about">
<a class="jie-user" href=""> <img src="res/images/uer.jpg"
alt="头像"> <cite> 压缩 <em>2017-05-01发布</em>
</cite>
</a>
<div class="detail-hits" data-id="{{rows.id}}">
<span class="layui-btn layui-btn-mini jie-admin"><a
href="#">已完帖，无法编辑</a> </span> <span
class="layui-btn layui-btn-mini jie-admin" type="collect"
data-type="add"> <a id="collectPost">收藏</a>
</span> <span
class="layui-btn layui-btn-mini jie-admin layui-btn-danger"
type="collect" data-type="add"> <a>取消收藏</a>
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<a name="comment"></a>
<ul class="jieda photos" id="jieda">
<li data-id="12" class="jieda-daan"><a
name="item-121212121212"></a>
<div class="detail-about detail-about-reply">
<a class="jie-user" href=""> <img src="res/images/uer.jpg"
alt=""> <cite> <i>纸飞机</i> <!-- <em>(楼主)</em>
<em style="color:#5FB878">(管理员)</em> -->
</cite>
</a>
<div class="detail-hits">
<span>3分钟前</span>
</div>
<i class="iconfont icon-caina" title="最佳答案"></i>
</div>
<div class="detail-body jieda-body">
<p>么么哒</p>
</div>
<div class="jieda-reply">
<span class="jieda-zan zanok" type="zan"><i
class="iconfont icon-zan"></i><em>12</em> </span>
<!-- <div class="jieda-admin">
<span type="del">删除</span>
<span class="jieda-accept" type="accept">采纳</span>
</div> -->
</div></li>
<li data-id="13"><a name="item-121212121212"></a>
<div class="detail-about detail-about-reply">
<a class="jie-user" href=""> <img src="res/images/uer.jpg"
alt=""> <cite> <i>香菇</i> <em
style="color: #FF9E3F">活雷锋</em>
</cite>
</a>
<div class="detail-hits">
<span>刚刚</span>
</div>
</div>
<div class="detail-body jieda-body">
<p>蓝瘦</p>
</div>
<div class="jieda-reply">
<span class="jieda-zan" type="zan"><i
class="iconfont icon-zan"></i><em>0</em> </span>
<div class="jieda-admin">
<span type="del"><a href="#"
class="layui-btn layui-btn-danger layui-btn-small">删除</a></span> <span
class="jieda-accept" type="accept"> <a href="#"
class="layui-btn layui-btn-small">采纳</a></span>
</div>
</div></li> <!-- <li class="fly-none">没有任何回答</li> -->
</ul>
<span id="toName">@ 压缩(楼主)</span>
<div class="layui-form layui-form-pane">
<form action="${pageContext.request.contextPath}/AnswerAction_addAnswer">
<input type="hidden" name="pasteid" value="8a8486706eb0ad4d016eb0ae20b70000"/> <div class="layui-form-item layui-form-text">
<div class="layui-input-block">
<div class="editor">
<textarea id="content" name="content"
style="width: 690px; height: 450px; visibility: hidden;"></textarea>
</div>
</div>
</div> <div>
<button class="layui-btn" lay-filter="*" lay-submit>提交回答</button>
</div>
</form>
</div>
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</dl>
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<script type="text/javascript">
KE.show({
id : 'content',
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cssPath : './index.css',
items : [ 'fontname', 'fontsize', 'textcolor', 'bgcolor', 'bold',
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});
</script>
<script>
layui.cache.page = '';
layui.cache.user = {
username : '游客',
uid : -1,
avatar : '../res/images/avatar/00.jpg',
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sex : '男'
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layui.config({
version : "2.0.0",
base : '../res/mods/'
}).extend({
fly : 'index'
}).use('fly');
</script>
</body>
</html>
detail.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>发表问题</title>
<meta name="viewport"
content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" href="css/head.css" />
<link rel="stylesheet" href="layui/css/layui.css"> <link rel="stylesheet" href="css/global.css"> <script src="layui/layui.js"></script>
</head>
<body> <div class="dvhead">
<div class="dvlogo">
<a href="index.html">你问我答</a>
</div>
<div class="dvsearch">10秒钟注册账号，找到你的同学</div>
<div class="dvreg">
已有账号，立即 <a href="login.html">登录</a>
</div>
</div> <div class="main layui-clear">
<div class="fly-panel" pad20>
<h2 class="page-title">发表问题</h2> <!-- <div class="fly-none">并无权限</div> --> <div class="layui-form layui-form-pane">
<form action="${pageContext.request.contextPath }/PasteAction_addPaste ">
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<label for="L_title" class="layui-form-label">标题</label>
<div class="layui-input-block">
<input type="text" id="L_title" name="title" required
lay-verify="required" autocomplete="off" class="layui-input">
</div>
</div> <div class="layui-form-item layui-form-text">
<div class="layui-input-block">
<div class="editor">
<textarea id="content" name="content"
style="width: 1040px; height: 450px; visibility: hidden;"></textarea>
</div>
</div>
<label for="L_content" class="layui-form-label" style="top: -2px;">描述</label>
</div> <div class="layui-form-item">
<label for="L_title" class="layui-form-label">悬赏</label>
<div class="layui-input-block">
<input type="number" name="offer" required lay-verify="required"
autocomplete="off" class="layui-input">
</div>
</div>
<div class="layui-form-item">
<button class="layui-btn" lay-filter="*" lay-submit>立即发布</button>
</div>
</form>
</div>
</div>
</div> <script type="text/javascript" charset="utf-8" src="js/kindeditor.js"></script>
<script type="text/javascript">
KE.show({
id : 'content',
resizeMode : 1,
cssPath : './index.css',
items : [ 'fontname', 'fontsize', 'textcolor', 'bgcolor', 'bold',
'italic', 'underline', 'removeformat', 'justifyleft',
'justifycenter', 'justifyright', 'insertorderedlist',
'insertunorderedlist', 'emoticons', 'image', 'link' ]
});
</script>
<script>
layui.cache.page = '';
layui.cache.user = {
username : '游客',
uid : -1,
avatar : '../res/images/avatar/00.jpg',
experience : 83,
sex : '男'
};
layui.config({
version : "2.0.0",
base : '../res/mods/'
}).extend({
fly : 'index'
}).use('fly');
</script>
</body>
</html>
add.jsp
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd"> <struts> <constant name="struts.devMode" value="true"></constant>
<constant name="struts.enable.DynamicMethodInvocation" value="true"></constant> <package name="hibernateTest" namespace="/" extends="struts-default">
<global-allowed-methods>regex:.*</global-allowed-methods>
<action name="UserAction_*" class="com.Gary.web.UserAction" method="{1}"> <result name="toIndex" type="redirect">/index.jsp</result>
<result name = "login">/login.jsp</result>
</action> <action name="PasteAction_*" class="com.Gary.web.PasteAction" method="{1}">
<result name="toIndex" type="redirect">/index.jsp</result>
</action> <action name="AnswerAction_*" class="com.Gary.web.AnswerAction" method="{1}">
<result name="success">/index.jsp</result>
</action> </package> </struts>
struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <property name="hibernate.connection.url">jdbc:mysql:///hforum</property> <property name="hibernate.connection.username">root</property> <property name="hibernate.connection.password">123456</property> <!-- 将hibernate生成的sql语句打印到控制台 -->
<property name="hibernate.show_sql"></property> <!-- 格式化hibernate生成的sql语句 -->
<property name="hibernate.format_sql"></property> <!-- 配置hibernate自动创建表-->
<property name="hibernate.hbm2ddl.auto">update</property> <!-- 配置数据库的隔离级别-->
<property name="hibernate.connection.isolation">4</property> <!-- 配置事务 (session与当前线程绑定) -->
<property name="hibernate.current_session_context_class">thread</property> <mapping resource="com/Gary/domain/User.hbm.xml"/>
<mapping resource="com/Gary/domain/Paste.hbm.xml"/>
<mapping resource="com/Gary/domain/Answer.hbm.xml"/> </session-factory> </hibernate-configuration>
hibernate.xml
com.Gary.dao
package com.Gary.dao; import org.hibernate.Session; import com.Gary.domain.Answer;
import com.Gary.utils.HibernateUtils; public class AnswerDao { public void addAnswer(Answer answer) { Session session = HibernateUtils.getCurrentSession();
session.save(answer); } }
AnswerDao.java
package com.Gary.dao; import org.hibernate.Session; import com.Gary.domain.Paste;
import com.Gary.utils.HibernateUtils; public class PasteDao { public void addPaste(Paste paste) { Session session = HibernateUtils.getCurrentSession();
session.save(paste); } public Paste findPasteById(String pasteid) { Session session = HibernateUtils.getCurrentSession();
return session.get(Paste.class, pasteid); } }
PasteDao.java
package com.Gary.dao; import org.hibernate.Session;
import org.hibernate.query.NativeQuery; import com.Gary.domain.User;
import com.Gary.utils.HibernateUtils; public class UserDao { //原生SQL查询
public User findUesr(User user) { Session session = HibernateUtils.getCurrentSession();
String sql = "select * from user where username = ? and password = ?";
NativeQuery query = session.createSQLQuery(sql);
query.setParameter(1, user.getUsername());
query.setParameter(2, user.getPassword());
query.addEntity(User.class); User temp = (User) query.uniqueResult(); return temp; } }
UserDao.java
com.Gary.domain
package com.Gary.domain;
public class Answer {
private String id;
private String content;
private User user;
private Paste paste;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Paste getPaste() {
return paste;
}
public void setPaste(Paste paste) {
this.paste = paste;
}
}
Answer.java
package com.Gary.domain; import java.util.HashSet;
import java.util.Set; public class Paste { private String id; private String title;
private String content;
private Integer offer;
private Integer ansnum;
private Integer glanceover;
private String createtime; //一个帖子属于一个用户
private User user; private Set<User> userAnswerSet = new HashSet<User>(); public Set<User> getUserAnswerSet() {
return userAnswerSet;
}
public void setUserAnswerSet(Set<User> userAnswerSet) {
this.userAnswerSet = userAnswerSet;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public Integer getOffer() {
return offer;
}
public void setOffer(Integer offer) {
this.offer = offer;
}
public Integer getAnsnum() {
return ansnum;
}
public void setAnsnum(Integer ansnum) {
this.ansnum = ansnum;
}
public Integer getGlanceover() {
return glanceover;
}
public void setGlanceover(Integer glanceover) {
this.glanceover = glanceover;
}
public String getCreatetime() {
return createtime;
}
public void setCreatetime(String createtime) {
this.createtime = createtime;
} }
Paste.java
package com.Gary.domain; import java.util.HashSet;
import java.util.Set; public class User { private String id;;
private String username;
private String password; private String name;
private String email;
private String telephone; //一对多
private Set<Paste> pasteSet = new HashSet<Paste>(); private Set<Paste> answerPasteSet = new HashSet<Paste>(); public Set<Paste> getAnswerPasteSet() {
return answerPasteSet;
}
public void setAnswerPasteSet(Set<Paste> answerPasteSet) {
this.answerPasteSet = answerPasteSet;
}
public Set<Paste> getPasteSet() {
return pasteSet;
}
public void setPasteSet(Set<Paste> pasteSet) {
this.pasteSet = pasteSet;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
} }
User.java
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.Gary.domain"> <class name ="Answer" table="answer">
<id name="id">
<generator class="uuid"></generator>
</id> <property name="content" column="content"></property> <many-to-one name="user" column="userid" class="User"></many-to-one>
<many-to-one name="paste" column="pasteid" class="Paste"></many-to-one> </class> </hibernate-mapping>
Answer.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.Gary.domain">
<class name = "Paste" table="paste">
<id name="id">
<generator class="uuid"></generator>
</id> <property name="title" column="title"></property>
<property name="content" column="content"></property>
<property name="offer" column="offer"></property>
<property name="ansnum" column="ansnum"></property>
<property name="glanceover" column="glanceover"></property>
<property name="createtime" column="createtime"></property> <!-- name:引用属性名
class:与他关系的对象的完整类名
column:外键列名
-->
<!-- inverse:配置关系是否不维护
true: 不维护
false: 维护关系
insert属性:
性能优化:
无论怎么放弃维护,总有一方需要维护(按照默认值来就行)
一般的开发中,一的一方放弃维护,多的一方不放弃维护
-->
<many-to-one name="user" class="User" column="userid" insert="true"></many-to-one> <!-- 多对多关系 转换为两个一对多 -->
<set name="userAnswerSet">
<!-- 指定关联的外键的列名 -->
<key column="userid"></key>
<!-- 指定关联的外键的实体类名 -->
<one-to-many class="Answer"/>
</set> </class> </hibernate-mapping>
Paste.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.Gary.domain">
<class name="User" table="user">
<id name = "id">
<generator class="uuid"></generator>
</id> <property name="username" column="username"></property>
<property name="password" column="password"></property>
<property name="name" column="name"></property>
<property name="email" column="email"></property>
<property name="telephone" column="telephone"></property> <!-- name:集合属性名字
column:外键列名
class:与他相关的对象的完整类名 -->
<!--
cascade:级联操作
save-update:级联保存,级联更新
delete:级联删除
all
-->
<!-- inverse:配置关系是否不维护
true: 不维护
false: 维护关系
-->
<set name="pasteSet">
<key column="userid"></key>
<one-to-many class="Paste"/>
</set> <set name="answerPasteSet">
<key column="pasteid"></key>
<one-to-many class="Answer"/>
</set> </class>
</hibernate-mapping>
User.hbm.xml
com.Gary.service
package com.Gary.service; import org.hibernate.Transaction; import com.Gary.dao.AnswerDao;
import com.Gary.domain.Answer;
import com.Gary.utils.HibernateUtils; public class AnswerService { public void addAnswer(Answer answer) { AnswerDao answerDao= new AnswerDao();
Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction(); try {
answerDao.addAnswer(answer);
}catch(Exception e)
{
beginTransaction.rollback();
} beginTransaction.commit(); } }
AnswerService.java
package com.Gary.service; import org.hibernate.Transaction; import com.Gary.dao.PasteDao;
import com.Gary.domain.Paste;
import com.Gary.utils.HibernateUtils; public class PasteService { public void addPaste(Paste paste) { PasteDao pasteDao = new PasteDao(); Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction(); try
{
pasteDao.addPaste(paste);
}
catch(Exception e)
{
beginTransaction.rollback();
} beginTransaction.commit();
} //查找 不用进行事务保护
public Paste findPasteById(String pasteid) { PasteDao pasteDao = new PasteDao(); Paste paste = null;
Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction();
try
{
paste = pasteDao.findPasteById(pasteid);
}
catch(Exception e)
{
beginTransaction.rollback();
} beginTransaction.commit();
return paste; } }
PasteService.java
package com.Gary.service; import org.hibernate.Transaction; import com.Gary.dao.UserDao;
import com.Gary.domain.User;
import com.Gary.utils.HibernateUtils; public class UserService { public User findUesr(User user) { UserDao userDao = new UserDao();
//开启事务(查询不需要数据库保护)
Transaction transaction = HibernateUtils.getCurrentSession().beginTransaction(); User temp = null; try
{
temp = userDao.findUesr(user);
}
catch(Exception e)
{
transaction.rollback();
} //提交事务
transaction.commit(); return temp;
} }
UserService.java
com.Gary.utils
package com.Gary.utils; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; public class HibernateUtils { private static SessionFactory sessionFactory = null; static {
Configuration config = new Configuration().configure();
sessionFactory = config.buildSessionFactory();
} public static Session getSession()
{
return sessionFactory.openSession();
} public static Session getCurrentSession()
{
return sessionFactory.getCurrentSession();
} }
HibernateUtils.java
com.Gary.web
package com.Gary.web; import com.Gary.domain.Answer;
import com.Gary.domain.Paste;
import com.Gary.domain.User;
import com.Gary.service.AnswerService;
import com.Gary.service.PasteService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven; public class AnswerAction extends ActionSupport implements ModelDriven<Answer>{ public Answer answer = new Answer();
public String pasteid; public String addAnswer() throws Exception { AnswerService answerService = new AnswerService();
PasteService pasteService = new PasteService(); Paste paste = pasteService.findPasteById(pasteid);
answer.setPaste(paste);
User user = (User) ActionContext.getContext().getSession().get("user");
answer.setUser(user); System.out.println(pasteid + " --- "+answer.getContent());
answerService.addAnswer(answer); return "success";
} public String getPasteid() {
return pasteid;
} public void setPasteid(String pasteid) {
this.pasteid = pasteid;
} @Override
public Answer getModel() { return answer;
} }
AnswerAction.java
package com.Gary.web; import java.text.SimpleDateFormat;
import java.util.Date; import com.Gary.domain.Paste;
import com.Gary.domain.User;
import com.Gary.service.PasteService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven; public class PasteAction extends ActionSupport implements ModelDriven<Paste>{ public Paste paste = new Paste(); //addPaste
public String addPaste() throws Exception { //没有的数据手动封装
//title content offer
paste.setAnsnum(0);
paste.setGlanceover(0);
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String createtime = format.format(date);
paste.setCreatetime(createtime);
User user = (User) ActionContext.getContext().getSession().get("user");
paste.setUser(user); PasteService pasteService = new PasteService();
pasteService.addPaste(paste); System.out.println("PasteAction"+paste); return "toIndex";
} @Override
public Paste getModel() { return paste;
} }
PasteAction.java
package com.Gary.web; import com.Gary.domain.User;
import com.Gary.service.UserService;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven; public class UserAction extends ActionSupport implements ModelDriven<User>{ public User user = new User(); public String login() throws Exception { UserService userService = new UserService(); User temp = userService.findUesr(user); System.out.println("UserAction"+temp); if(temp!=null)
{
ActionContext.getContext().getSession().put("user", temp);
return "toIndex";
}
else
{
ActionContext.getContext().put("error", "用户名或密码错误！！");
return "login";
} } @Override
public User getModel() { return user;
} }
UserAction.java
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