Spring4 MVC Hibernate4集成

Spring4 MVC Hibernate4集成

一、    本文所用环境

Spring4.0.3.RELEASE

Hibernate4.3.5.Final

Mysql

二、    工程目录

 

三、    Maven添加依赖

用Maven创建项目，pom.xml如下：

 View Code

四、    新建数据库表

数据库采用Mysql，新建users表，我们演示操作此表

CREATE TABLE `users` (   `id` int(11) NOT NULL AUTO_INCREMENT,   `age` int(11) DEFAULT NULL,   `nice_name` varchar(32) DEFAULT NULL,   `user_name` varchar(32) DEFAULT NULL,   PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

创建Entity类Users.java见下

package com.lei.demo.entity;  import javax.persistence.*;  @Entity(name="users") public class Users {          public Users(){         super();     }          @Id     @GeneratedValue(strategy=GenerationType.AUTO)     @Column(name="id")     private Integer id;          @Column(name="user_name",length=32)     private String user_name;          @Column(name="age")     private Integer age;          @Column(name="nice_name",length=32)     private String nice_name;          public Integer getId() {         return id;     }     public void setId(Integer id) {         this.id = id;     }     public String getUser_name() {         return user_name;     }     public void setUser_name(String user_name) {         this.user_name = user_name;     }     public Integer getAge() {         return age;     }     public void setAge(Integer age) {         this.age = age;     }     public String getNice_name() {         return nice_name;     }     public void setNice_name(String nice_name) {         this.nice_name = nice_name;     } }

 

五、    配置文件

1.        首先看一下Web.xml

<?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"      xmlns:web="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_3_0.xsd"          id="WebApp_ID" version="3.0">   <display-name>Archetype Created Web Application</display-name>   <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>classpath:/spring-*.xml</param-value>   </context-param>   <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener>   <!-- 定义DispatcherServlet -->   <servlet>     <servlet-name>lei-dispatcher</servlet-name>     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>     <init-param>       <!-- 默认/WEB-INF/[servlet名字]-servlet.xml加载上下文，            如果配置了contextConfigLocation参数，           将使用classpath:/lei-dispatcher-servlet.xml加载上下文       -->       <param-name>contextConfigLocation</param-name>       <param-value>classpath:/lei-dispatcher-servlet.xml</param-value>     </init-param>     <load-on-startup>1</load-on-startup>   </servlet>   <!-- 拦截匹配的请求，这里所有请求采用名字为lei-dispatcher的DispatcherServlet处理 -->   <servlet-mapping>     <servlet-name>lei-dispatcher</servlet-name>     <url-pattern>/</url-pattern>   </servlet-mapping> </web-app>

 

2.        lei-dispatcher-servlet.xml

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:context="http://www.springframework.org/schema/context"     xmlns:mvc="http://www.springframework.org/schema/mvc"     xmlns:p="http://www.springframework.org/schema/p"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:tx="http://www.springframework.org/schema/tx"     xsi:schemaLocation="         http://www.springframework.org/schema/beans              http://www.springframework.org/schema/beans/spring-beans-3.0.xsd         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-3.0.xsd         http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx-4.0.xsd         ">              <!-- 启动自动扫描该包下所有的Bean(例如@Controller) -->     <context:component-scan base-package="com.lei.demo" />          <!-- 定义视图解析器 -->     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">         <property name="prefix">             <value>/WEB-INF/user/</value>         </property>         <property name="suffix">             <value>.jsp</value>         </property>     </bean>      </beans>

 

3.        Spring-hibernate的整合

spring-hibernate.xml文件

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:context="http://www.springframework.org/schema/context"     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:tx="http://www.springframework.org/schema/tx"     xmlns:aop="http://www.springframework.org/schema/aop"     xsi:schemaLocation="         http://www.springframework.org/schema/beans              http://www.springframework.org/schema/beans/spring-beans-4.0.xsd         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context-4.0.xsd         http://www.springframework.org/schema/aop         http://www.springframework.org/schema/aop/spring-aop-4.0.xsd         http://www.springframework.org/schema/tx         http://www.springframework.org/schema/tx/spring-tx-4.0.xsd         ">      <!-- Hibernate4 -->     <!-- 加载资源文件  其中包含变量信息，必须在Spring配置文件的最前面加载，即第一个加载-->     <context:property-placeholder location="classpath:persistence-mysql.properties" />          <bean id="sessionFactory"          class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">         <property name="dataSource" ref="dataSource" />         <property name="packagesToScan">             <list>                 <!-- 可以加多个包 -->                 <value>com.lei.demo.entity</value>             </list>         </property>         <property name="hibernateProperties">             <props>                 <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>                 <prop key="hibernate.dialect">${hibernate.dialect}</prop>                 <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>                 <!--  <prop key="hibernate.current_session_context_class">thread</prop> -->              </props>         </property>     </bean>          <!-- 数据库映射 -->     <!--  class="org.apache.tomcat.dbcp.dbcp.BasicDataSource" -->     <!--  class="org.springframework.jdbc.datasource.DriverManagerDataSource" -->     <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">       <property name="driverClassName" value="${jdbc.driverClassName}" />       <property name="url" value="${jdbc.url}" />       <property name="username" value="${jdbc.user}" />       <property name="password" value="${jdbc.pass}" />    </bean>         <!-- 配置Hibernate事务管理器 -->     <bean id="transactionManager"         class="org.springframework.orm.hibernate4.HibernateTransactionManager">       <property name="sessionFactory" ref="sessionFactory" />    </bean>        <!-- 配置事务异常封装 -->    <bean id="persistenceExceptionTranslationPostProcessor"         class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />        <!--  声明式容器事务管理 ,transaction-manager指定事务管理器为transactionManager -->     <tx:advice id="txAdvice" transaction-manager="transactionManager">         <tx:attributes>             <tx:method name="add*" propagation="REQUIRED" />             <tx:method name="get*" propagation="REQUIRED" />             <tx:method name="*" read-only="true" />         </tx:attributes>     </tx:advice>          <aop:config expose-proxy="true">         <!-- 只对业务逻辑层实施事务 -->         <aop:pointcut id="txPointcut" expression="execution(* com.lei.demo.service..*.*(..))" />         <!-- Advisor定义，切入点和通知分别为txPointcut、txAdvice -->         <aop:advisor pointcut-ref="txPointcut" advice-ref="txAdvice"/>     </aop:config>      </beans>

事务采用tx:advice和aop:config的xml配置方式实现。事务的其他实现方式见《Spring MVC事务配置》

 

资源文件persistence-mysql.properties如下：

# jdbc.X jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://yourServerIP:3306/yourDatabase?createDatabaseIfNotExist=true jdbc.user=user jdbc.pass=password  # hibernate.X hibernate.connection.driverClass=org.gjt.mm.mysql.Driver hibernate.connection.url=jdbc:mysql:// yourServerIP:3306/yourDatabase hibernate.dialect=org.hibernate.dialect.MySQL5Dialect hibernate.connection.username=user hibernate.connection.password=password hibernate.show_sql=true hibernate.hbm2ddl.auto=create-drop

 

六、    DAO、Service

UsersDAO.java如下：

package com.lei.demo.dao;  import java.util.List;  import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory;  import com.lei.demo.entity.Users;  public class UsersDAO {     private SessionFactory sessionFactory;      public void setSessionFactory(SessionFactory sessionFactory) {         this.sessionFactory = sessionFactory;     }     public SessionFactory getSessionFactory() {         return sessionFactory;     }      public List<Users> getAllUser(){         String hsql="from users";         Session session = sessionFactory.getCurrentSession();         Query query = session.createQuery(hsql);                  return query.list();     } }

 

UserService.java如下：

package com.lei.demo.service;  import com.lei.demo.dao.*;  public class UserService {     private UsersDAO userDao;          public int userCount(){         return userDao.getAllUser().size();     }      public UsersDAO getUserDao() {         return userDao;     }      public void setUserDao(UsersDAO userDao) {         this.userDao = userDao;     }  }

 

七、    加载Bean配置文件

这里主要是加载上边的dao、service

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans"     xmlns:context="http://www.springframework.org/schema/context"     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-3.2.xsd         http://www.springframework.org/schema/context       http://www.springframework.org/schema/context/spring-context-3.2.xsd">            <bean id="usersDAO" class="com.lei.demo.dao.UsersDAO">           <property name="sessionFactory" ref="sessionFactory"></property>     </bean>     <bean id="userService" class="com.lei.demo.service.UserService">         <property name="userDao" ref="usersDAO"></property>     </bean> </beans>

 

当然你也可以不采用xml配置bean，采用注释加载bean，见《Spring3系列7- 自动扫描组件或Bean》、《Spring 开启Annotation <context:annotation-config> 和 <context:component-scan>诠释及区别》

 

八、    JSP页面和Controller

WEB-INF/user/users.jsp如下：

<%@ 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>     <h1>Message : ${message}</h1> </body> </html>

 

 

写Controller访问上边的jsp

package com.lei.demo.controller;  import javax.annotation.Resource;  import com.lei.demo.service.*;  import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.servlet.ModelAndView;  @Controller @RequestMapping("/user") public class UserController {          @Resource(name="userService")     private UserService service;          @RequestMapping(value="/manager",method=RequestMethod.GET)     public ModelAndView hello2(){         ModelAndView mv = new ModelAndView();         mv.addObject("message", "HelloMVC");         mv.setViewName("users");         return mv;     }          @RequestMapping(value="/count",method=RequestMethod.GET)     public ModelAndView count(){                  int c = service.userCount();                  ModelAndView mv = new ModelAndView();         mv.addObject("message", c);         mv.setViewName("users");         return mv;     } }

 

上边的controller定义了两个路径

http://localhost:8080/spring4-mvc-hibernate4/user/manager

http://localhost:8080/spring4-mvc-hibernate4/user/count

以上两个路径都调用WEB-INF/user/users.jsp

参考资料《Spring3系列13-Controller和@RequestMapping》

 

九、    运行结果

 

 

 源代码下载：

 http://www.oschina.net/code/snippet_1764868_35775