这次使用struts2+hibernate+spring三个框架整合实现一个简单的注册功能，是基于idea这个智能的java IDE。

一，创建一个Project，如下图

勾选红框内的选项

向下翻，还有hibernate

一共四个地方，选好后OK，静静等待idea下载jar包

二，导入必须的包

• spring-web-x.x.x.RELEASE.jar
• org.springframework.web.jar
• mysql-connector-java-x.x.x-bin.jar
  就这三个，其他的idea已经自动下载好了

三，准备工作也已完了，下面就是代码了

先将项目文件目录结构贴出来

Selection_003.png

一，dao
UserDAO.java

package per.summer.dao;

/**
 * Created by summer on 17-4-6.
 */
public interface UserDAO {
    public void addUser(Object entity);
}

UserDAOImpl.java

package per.summer.dao;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

/**
 * Created by summer on 17-4-6.
 */
public class UserDAOImpl implements UserDAO {

    SessionFactory sessionFactory;

    //为spring的注入提供setter方法
    public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
    }

    //添加一个用户    
    @Override
    public void addUser(Object entity) {
    Session session = sessionFactory.getCurrentSession();
    Transaction tx = session.beginTransaction();
    session.save(entity);
    tx.commit();
    session.close();
    }
}

二，action
UserAction.java

package per.summer.action;

import com.opensymphony.xwork2.ActionSupport;
import per.summer.dao.UserDAO;
import per.summer.entity.UserEntity;

/**
 * Created by summer on 17-4-6.
 */
public class UserAction extends ActionSupport{
    private String username;
    private String password;

    private UserDAO userDAO;

    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;
    }

    //为spring的注入提供setter方法
    public void setUserDAO(UserDAO userDAO) {
    this.userDAO = userDAO;
    }

    @Override
    public String execute() throws Exception {
    UserEntity userEntity = new UserEntity(username, password);
    userDAO.addUser(userEntity);
    return SUCCESS;
    }
}

三,entity
UserEntity.java

package per.summer.entity;

import javax.persistence.*;

/**
 * Created by summer on 17-4-6.
 */
@Entity
@Table(name = "user_inf")
public class UserEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String name;
    private String password;

    public UserEntity() {
    }

    public UserEntity(String name, String password) {
    this.name = name;
    this.password = password;
    }

    public String getName() {
    return name;
    }

    public void setName(String name) {
    this.name = name;
    }

    public String getPassword() {
    return password;
    }

    public void setPassword(String password) {
    this.password = password;
    }
}

对于hibernate持久化实体，这里我使用的是注解，就没有UserEntity.hbm.xml文件
四，spring-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="sessionFactory"
      class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
    <property name="annotatedClasses">
        <list>
            <value>per.summer.entity.UserEntity</value>
        </list>
    </property>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.connection.url">jdbc:mysql://localhost:3306/ssh</prop>
            <prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>

            <prop key="dialect">org.hibernate.dialect.MySQL5Dialect</prop>
            <prop key="hibernate.connection.username">root</prop>
            <prop key="hibernate.connection.password">manager</prop>
            <prop key="hibernate.current_session_context_class">thread</prop>
        </props>
    </property>
    </bean>

    <bean id="userDAO" class="per.summer.dao.UserDAOImpl"
      p:sessionFactory-ref="sessionFactory"/>

    <bean id="userAction" class="per.summer.action.UserAction"
      p:userDAO-ref="userDAO"/>
</beans>

五，strusts.xml

<?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>
    <package name="default" extends="struts-default">
    <!--这里的class属性的userAction就不是具体的实现类了，而是在前面的spring-config.xml文件中定义的一个bean-->
    <action name="login" class="userAction">
        <result>/WEB-INF/jsp/success.jsp</result>
    </action>
    </package>
</struts>

六，web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
     version="3.1">
    <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>
    <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-config.xml</param-value>
    </context-param>
</web-app>

七,index.jsp

<%@ taglib prefix="s" uri="/struts-tags" %>
<%--
  Created by IntelliJ IDEA.
  User: summer
  Date: 17-4-6
  Time: 下午6:03
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>Login</title>
  </head>
  <body>
    <s:form action="login">
      <s:textfield name="username" label="username"/>
      <s:textfield name="password" label="password"/>
      <s:submit value="login"/>
    </s:form>
  </body>
</html>

结果