Hibernate和Struts2整合的增、删、改、查

1. 新建一个Web项目，准备好jar包和配置文件。

2. web.xml文件中添加过滤器

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Test17</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <!-- 过滤器 -->
  <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

3. Hibernate主配置文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
    <!-- 数据库连接 -->
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="hibernate.connection.password">laoer123</property>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
        <property name="hibernate.connection.username">test0816</property>
        <!-- 数据库方案 -->
        <property name="hibernate.default_schema">TEST0816</property>
        <!-- 数据库方言 -->
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <!-- 调试 -->
        <property name="hibernate.show_sql">true</property>
        <property name="hibernate.format_sql">true</property>
        <!-- 自动建表方式 -->
        <property name="hibernate.hbm2ddl.auto">update</property>
        <!-- 注册映射文件 -->
        <mapping resource="com/hanqi/entity/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

4. Struts配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

    <!-- 覆盖默认的过滤的扩展名 -->
     <constant name="struts.action.extension" value="do,action,,"></constant>
     <!-- 启用配置调用 -->
     <constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>
     <!-- 定义包 -->
     <package name="index" extends="struts-default">

     <action name="addUser">
     <result>/WEB-INF/pages/addUser.jsp</result>
     </action>

     <action name="addUser2">
      <result>/WEB-INF/pages/addUser2.jsp</result>
     </action>

     <!-- 保存User -->
     <action name="saveUser" class="com.hanqi.action.UserAction" method="saveUser">
     <result name="fail">/WEB-INF/pages/fail.jsp</result>
     <result>/WEB-INF/pages/success.jsp</result>
     </action>
     <!-- 查询用户
     <action name="selectUser" class="com.hanqi.action.UserAction"  method="selectUser">
     <result name="fail">/WEB-INF/pages/fail.jsp</result>
     <result>/WEB-INF/pages/selectUser.jsp</result>
     </action>
     -->

     <!-- 通配符方式 -->
     <action name="*" class="com.hanqi.action.UserAction" method="{1}">
     <result name="fail">/WEB-INF/pages/fail.jsp</result>
     <result>/WEB-INF/pages/{1}.jsp</result>
     </action>

     <!-- 删除用户 -->
     <action name="deleteUser" class="com.hanqi.action.UserAction" method="deleteUser">
     <result name="fail">/WEB-INF/pages/fail.jsp</result>
     <result type="redirectAction">selectUser</result>
     </action>

     <!-- 查询单条记录 -->
     <action name="updateUser" class="com.hanqi.action.UserAction" method="selectd">
     <result>/WEB-INF/pages/update.jsp</result>
     </action>

    <!-- 修改单个用户记录 -->
    <action name="EditUser" class="com.hanqi.action.UserAction" method="update">
    <result name="fail">/WEB-INF/pages/fail.jsp</result>
    <result type="redirectAction">selectUser</result>
    </action>
     <!-- 驱动模型的数据保存 -->
     <action name="saveUser2" class="com.hanqi.action.UserAction2" method="saveUser">
     <result name="fail">/WEB-INF/pages/fail.jsp</result>
     <result>/WEB-INF/pages/success.jsp</result>
     </action>

</package>

</struts>

5. 用Hibernate创建的持久化类以及映射文件

package com.hanqi.entity;

import java.util.Date;

//实体化类
//不要使用final修饰
public class User {

    private Integer userID;
    private String userName;
    private Date birthday;
    private Double money;
    private String password;
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public Integer getUserID() {
        return userID;
    }
    public void setUserID(Integer userID) {
        this.userID = userID;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    public Double getMoney() {
        return money;
    }
    public void setMoney(Double money) {
        this.money = money;
    }
    // 必须提供无参的构造方法
    //需要用到反射
    public User() {
        super();
        }
    public User(Integer userID, String userName) {
        super();
        this.userID = userID;
        this.userName = userName;
        }
    @Override
    public String toString() {
        return "User [userID=" + userID + ", userName=" + userName + ", birthday=" + birthday + ", money=" + money
                + ", password=" + password + "]";
    }

}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2016-11-7 14:40:01 by Hibernate Tools 3.4.0.CR1 -->
<hibernate-mapping>
    <class name="com.hanqi.entity.User" table="T_USER">
        <id name="userID" type="int">
            <column name="USER_ID" />
            <generator class="native" />
        </id>
        <property name="userName" type="java.lang.String">
            <column name="USER_NAME" length="20" not-null="true" unique="true"/>
        </property>
        <property name="birthday" type="java.util.Date">
            <column name="BIRTHDAY" sql-type="DATE"/>
        </property>
        <property name="money" type="java.lang.Double">
            <column name="MONEY" sql-type="NUMBER" default="0" length="8" scale="2"/>
        </property>
         <property name="password" type="java.lang.String">
        <column name="PASSWORD" length="10"></column>
        </property> 

    </class>
</hibernate-mapping>

6.DAO层

package com.hanqi.dao;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

import com.hanqi.entity.User;

public class UserDAO {

    private Configuration cfg =null;
    private ServiceRegistry sr =null;

    private SessionFactory sf = null;
    private Session se =null;
    private Transaction ts =null;
    public UserDAO()
    {
        //初始化Hibernate
        cfg = new Configuration().configure();

        sr = new StandardServiceRegistryBuilder().
                applySettings(cfg.getProperties()).build();

    }
    //
    private void init()
    {
        sf= cfg.buildSessionFactory(sr);

        se = sf.openSession();

        ts = se.beginTransaction();
    }
    private void destory()
    {
        ts.commit();
        se.close();
        sf.close();

    }
    //保存User
    public User insert(User user)
    {

        init();
        se.save(user);
        destory();
        return user;
    }
    //查询列表
    public List<User>getAll()
    {
        List<User> rtn = new ArrayList<>();

        init();

        rtn=se.createQuery("from User ")
        .list();

        destory();

        return rtn;
    }
    //删除
    public void delete(int userID)
    {
        init();

        //获取对象
        User u=(User)se.get(User.class, userID);

        se.delete(u);

        destory();
    }
    //查询单个
        public User selectUser(int userID)
        {
            init();
            //获取对象
            User u = (User)se.get(User.class, userID);

            destory();

            return u;
        }
    //修改
    public User update(User user)
    {
        init();

        // 获取对象
//        User u =(User)se.get(User.class,userID);
//        //修改数据
//        u.setUserID(user.getUserID());
//        u.setUserName(user.getUserName());
//        u.setPassword(user.getPassword());
//        u.setMoney(user.getMoney());
//        u.setBirthday(user.getBirthday());

        se.update(user);

        destory();

        return user;

    }

}

7. Service层

package com.hanqi.service;

import java.util.List;

import com.hanqi.dao.UserDAO;
import com.hanqi.entity.User;

public class UserService {

    // 添加User的方法
    public User add(User user)
    {

        return     new UserDAO().insert(user);
    }
    //全表查询

    public List<User> getAll()
    {
        return new UserDAO().getAll();
    }
    //删除记录
    public void delete(int userID)
    {
        new UserDAO().delete(userID);
    }

    //查询单个
    public User select(int userID)
    {
        return new UserDAO().selectUser(userID);
    }
    //修改记录
    public User update(User user)
    {
        return new UserDAO().update(user);
    }
}

8.Action类

package com.hanqi.action;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.ServletActionContext;

import com.hanqi.entity.User;
import com.hanqi.service.UserService;
import com.opensymphony.xwork2.ActionContext;

public class UserAction {

    //域模型方式
    private User user;

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }
    public String insertUser()
    {
        return saveUser();
    }
    //处理保存User的方法
    public String saveUser()
    {
        String rtn ="fail";

        System.out.println(user);
        try{
        // 调用Service层（模型层，业务逻辑层）
        User u1=new UserService().add(user);

        //使用request转发到下一个页面
        ActionContext ac = ActionContext.getContext();

        Map<String,Object>mo=(Map<String,Object>)ac.get("request");

        mo.put("user", u1);

        rtn="success";
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return rtn;
    }
    //查询
    public String selectUser()
    {
        String rtn ="fail";
        try
        {
            //调用查询的方法
            List<User> lu = new UserService().getAll();
            //得到原生的request
            HttpServletRequest hsr=ServletActionContext.getRequest();
            hsr.setAttribute("userlist", lu);
            rtn = "success";
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return rtn;
    }
    //删除
    public String deleteUser()
    {
        String rtn="fail";
        try
        {
            //获取userid;
            //得到原生的request
            HttpServletRequest hsr=ServletActionContext.getRequest();
            String uid = hsr.getParameter("userid");
            //执行删除
            new UserService().delete(Integer.parseInt(uid));

            rtn = "success";
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return rtn;
    }
    //查询单条记录
        public String selectd()
        {
            String rtn="fail";
            try
            {
                //得到原生的request
                HttpServletRequest hsr=ServletActionContext.getRequest();
                String uid=hsr.getParameter("userid");
                int userid = Integer.parseInt(uid);
                User u=    new UserService().select(userid);
                hsr.setAttribute("user", u);
                rtn="success";
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
            return rtn;
        }
    //修改单个用户记录
        public String update()
        {
            String rtn="fail";
            try
            {
//                HttpServletRequest hsr=ServletActionContext.getRequest();
//                String uid=hsr.getParameter("userid");
                //执行修改
                new UserService().update(user);

                rtn="success";
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }
            return rtn;
        }
    // 分页查询
        public String selectUserf()
        {
            String rtn="fail";
            try
            {
                //得到原生的request
                HttpServletRequest hsr=    ServletActionContext.getRequest();
                int page= Integer.parseInt(hsr.getParameter("pages"));
                //调用查询的方法
                List<User>list=new UserService().selectf(page);
                hsr.setAttribute("pages", page+1);
                hsr.setAttribute("fselect", list);
                rtn="success";
            }
            catch(Exception e)
            {
                e.printStackTrace();
            }

            return rtn;
        }
}

package com.hanqi.action;

import javax.servlet.http.HttpServletRequest;

import org.apache.struts2.ServletActionContext;

import com.hanqi.entity.User;
import com.hanqi.service.UserService;
import com.opensymphony.xwork2.ModelDriven;

// 使用模型驱动的方式
// 实现接口ModelDriven<实体类>
public class UserAction2 implements ModelDriven<User>{
    //必须要实例化
    private User user = new User();
    // 返回实体类的实例
    @Override
    public User getModel() {
    // 返回的必须是模型的 实例

        return user;
    }

    // 保存数据
    public String saveUser()
    {
        String rtn ="fail";

        try
        {
            //保存
            new UserService().add(user);
            HttpServletRequest hsr = ServletActionContext.getRequest();
            hsr.setAttribute("user", user);

            rtn="success";
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }

        return rtn;
    }

}

9. index.jsp 主界面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="addUser">添加用户</a>

<br>
<br>
<a href="selectUser?pages=1">用户列表</a>
<br>
<br>
<a href="addUser2">添加用户2</a>
</body>
</html>

添加用户界面

<%@page import="com.hanqi.service.UserService"%>
<%@page import="com.hanqi.entity.User"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

添加用户
<br>
<br>
<form action="saveUser!insertUser.action" method="post">
用户名：<input type="text" name="user.userName">
<br>
密码：<input type="password" name="user.password">
<br>
生日：<input type="text" name="user.birthday">
<br>
薪酬：<input type="text" name="user.money">
<br><br>
<input type="submit" value="保存">

</form>
</body>
</html>

跳转成功的界面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

操作成功！
<br>
User =${user }
<br>
</body>
</html>

跳转失败的界面

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

操作失败

</body>
</html>

查询用户的界面

<%@page import="com.hanqi.entity.User"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

<%

List<User>lu = (List<User>)request.getAttribute("userlist");

for(User u:lu)
{
    out.print(u+"【<a href='deleteUser?userid="+u.getUserID()+"'>删除</a>】【<a href='updateUser?userid="+u.getUserID()+"'>修改</a>】<br>");
    int pages = Integer.parseInt(request.getParameter("pages"));
}

%>
<br><br>
</body>
</html>

修改用户的界面

<%@page import="com.hanqi.entity.User"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%

User us = (User)request.getAttribute("user");

%>

<br>
<br>
<form action="EditUser" method="post">

用户ID：<input type="text" readonly="readonly" name="user.userID" value="<% out.print(us.getUserID());%>">

用户名：<input type="text" name="user.userName" value="<% out.print(us.getUserName());%>">
<br>
密码：<input type="password" name="user.password" value="<% out.print(us.getPassword());%>">
<br>
生日：<input type="text" name="user.birthday" value="<% out.print(us.getBirthday());%>">
<br>
薪酬：<input type="text" name="user.money" value="<%out.print(us.getMoney());%>">
<br><br>
<input type="submit" value="保存">

</form>
</body>
</html>

用模型驱动方式添加用户的界面

<%@page import="com.hanqi.service.UserService"%>
<%@page import="com.hanqi.entity.User"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

添加用户-模型驱动方式
<br>
<br>
<form action="saveUser2" method="post">
用户名：<input type="text" name="userName">
<br>
密码：<input type="password" name="password">
<br>
生日：<input type="text" name="birthday">
<br>
薪酬：<input type="text" name="money">
<br><br>
<input type="submit" value="保存">

</form>
</body>
</html>