Struts 2 + Spring 3 + Hibernate 整合笔记

转载地址：http://blog.psjay.com/posts/struts-2-spring-3-hibernate-integration-notes/

四天时间按看完了《轻量级Java EE企业应用实战 —— Sturts 2 + Spring + Hibernate》，于是在carino的建议下打算写一个简单的论坛程序来练练手。

但是SSH的整合配置却折腾了我不少时间（因为Spring 3的包结构发生了很大的变化），经过一系列的倒腾，终于整合成功了。放出代码。

环境：

• Windows 7

• Tomcat 6

• 数据库：MySQL

需要的jar包如下：

文件结构如下:

下面是WEB-INF/web.xml:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- 添加struts 2的支持 --> <filter> <filter-name>Struts 2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>Struts 2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 启动spring容器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>

然后是WEB-INF/applicationContext.xml:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 配置Hibernate 数据源--> <bean id="myDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="com.mysql.jdbc.Driver"/> <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/pbbs"/> <property name="user" value="root"/> <property name="password" value="password"/> </bean> <!-- 配置Hibernate SeesionFactory --> <bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="myDataSource"/> <property name="mappingResources"> <list> <value>com/psjay/pbbs/model/User.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.hbm2ddl.auto">create</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <!-- 配置其他beans--> <bean id="registerAction" class="com.psjay.pbbs.action.RegisterAction" scope="prototype"> <property name="userManager" ref="userManager"></property> </bean> <bean id="userManager" class="com.psjay.pbbs.service.impl.UserManagerImpl"> <property name="userDao" ref="userDao"></property> </bean> <bean id="userDao" class="com.psjay.pbbs.dao.impl.UserDaoImpl"> <property name="sessionFactory" ref="mySessionFactory"></property> </bean> </beans>

以及src/struts.xml:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

<?xml version="1.0" encoding="UTF-8" ?> <struts> <constant name="struts.devMode" value="true" /> <package name="user" extends="struts-default"> <action name="register" class="com.psjay.pbbs.action.RegisterAction"> <result>/register.jsp</result> </action> <action name="registerAction" class="com.psjay.pbbs.action.RegisterAction" method="register"> <result name="registerSuccess">/registerSuccess.jsp</result> <result name="registerFail">/registerFail.jsp</result> <result name="input">/register.jsp</result> </action> </package> </struts>

和com/psjay/pbbs/model/User.hbm.xml :

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

<?xml version="1.0"?> <hibernate-mapping package="com.psjay.pbbs.model"> <class name="User" table="t_user"> <id name="id" column="u_id"> <generator class="native"/> </id> <property name="username" column="u_username" not-null="true"/> <property name="password" column="u_password" not-null="true"/> </class> </hibernate-mapping>

相关的java类源代码：

com.psjay.pbbs.action.RegisterAction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

package com.psjay.pbbs.action; import com.opensymphony.xwork2.ActionSupport; import com.psjay.pbbs.model.User; import com.psjay.pbbs.service.UserManager; public class RegisterAction extends ActionSupport { private String username; private String password; private String confirmPassword; private String tip; private UserManager userManager; /* * 用户注册 * */ public String register() { if(!password.equals(confirmPassword)) { tip = "两次输入的密码不同"; return "input"; } if(userManager.register(new User(username,password))) return "registerSuccess"; return "registerFail"; } //省略了setters and getters.... }

com.psjay.pbbs.dao.UserDao

1 2 3 4 5 6 7 8 9 10 11 12

package com.psjay.pbbs.dao; import com.psjay.pbbs.model.User; public interface UserDao { //根据用户名查找用户 public User findByUserName(String username); //创建用户 public Integer save(User u); //取得用户 public User get(User u); }

com.psjay.pbbs.dao.impl.UserDaoImpl

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

package com.psjay.pbbs.dao.impl; import java.util.List; import org.hibernate.Session; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import com.psjay.pbbs.dao.UserDao; import com.psjay.pbbs.model.User; public class UserDaoImpl extends HibernateDaoSupport implements UserDao { public boolean delete(String username) { // TODO Auto-generated method stub return false; } public boolean deleteAll() { // TODO Auto-generated method stub return false; } public User findByUserName(String username) { Session s = this.getSession(); List<User> users = (List<User>)s.createQuery("from User user where user.username=:username").setString("username", username).list(); if(users.isEmpty()) { return null; } return users.get(0); } public User get(User u) { return getHibernateTemplate().get(User.class, u.getId()); } public Integer save(User u) { return (Integer) getHibernateTemplate().save(u); } }

com.psjay.pbbs.model.User

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

package com.psjay.pbbs.model; public class User { //属性 private int id; private String username; private String password; //无参构造函数 public User() { } //构造函数 public User(String username,String password) { this.username = username; this.password = password; } //重写hashCode和equals方法 @Override public int hashCode() { final int prime = 31; int result = 1; result = prime * result + id; result = prime * result + ((username == null) ? 0 : username.hashCode()); return result; } @Override public boolean equals(Object obj) { if (this == obj) return true; if (obj == null) return false; if (getClass() != obj.getClass()) return false; User other = (User) obj; if (id != other.id) return false; if (username == null) { if (other.username != null) return false; } else if (!username.equals(other.username)) return false; return true; } //省略setters and getters.. }

com.psjay.pbbs.service.UserManager

1 2 3 4 5 6 7

package com.psjay.pbbs.service; import com.psjay.pbbs.model.User; public interface UserManager { public boolean register(User u); }

com.psjay.pbbs.service.impl.UserManagerImpl

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

package com.psjay.pbbs.service.impl; import com.psjay.pbbs.dao.UserDao; import com.psjay.pbbs.model.User; import com.psjay.pbbs.service.UserManager; public class UserManagerImpl implements UserManager { private UserDao userDao; public boolean register(User u) { if (userDao.findByUserName(u.getUsername()) != null) { return false; } userDao.save(u); return true; } //getters and setters public UserDao getUserDao() { return userDao; } public void setUserDao(UserDao userDao) { this.userDao = userDao; } }

这样，就实现了一个简单的注册小程序（当然还很不健壮）。