spring整合springmvc和hibernate

2021-11-18 21:54:00

上篇文章使用maven搭建了web环境，这篇来记录下如何使用spring整合springmvc和hibernate，亦即spring+springmvc+hibernate框架整合。

第一步：首先配置spring

配置spring配置文件applicationContext.xmls

 <?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"

     xmlns:context="http://www.springframework.org/schema/context"

     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

     xmlns:mvc="http://www.springframework.org/schema/mvc"

     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/tx

        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

        http://www.springframework.org/schema/aop

        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

     <!-- 自动扫描 -->

     <context:component-scan base-package="com.mvn" />

     <!-- 配置自动aop -->

     <aop:aspectj-autoproxy />

 </beans>

配置web.xml文件

<!-- 配置spring context需要读取的配置文件 -->

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:applicationContext.xml</param-value>

    </context-param>

    <!-- 配置spring listener 以便在web容器启动的时候能自动初始化spring -->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

第二步：配置spring mvc

配置spring mvc配置文件spring-web.xmls

 <?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"

     xmlns:context="http://www.springframework.org/schema/context"

     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

     xmlns:mvc="http://www.springframework.org/schema/mvc"

     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/tx

        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

        http://www.springframework.org/schema/aop

        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

     <!-- 自动扫描 com.mvn.controller的文件，初始化处理器-->

     <context:component-scan base-package="com.mvn.controller" />

     <!-- 配置试图解析器（渲染器） -->

     <bean id="viewResolver"

         class="org.springframework.web.servlet.view.UrlBasedViewResolver">

         <property name="viewClass"

             value="org.springframework.web.servlet.view.JstlView" />

         <property name="prefix" value="WEB-INF/jsp/" />

         <property name="suffix" value=".jsp" />

     </bean>

 </beans>

配置web.xml文件

 <!-- 配置spring mvc 分发器 -->

     <servlet>

         <servlet-name>springmvc</servlet-name>

         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

         <!-- 初始化spring mvc 配置文件的位置 -->

         <init-param>

             <param-name>contextConfigLocation</param-name>

             <param-value>classpath:spring-web.xml</param-value>

         </init-param>

         <!-- web容器启动的时候就加载springmvc -->

         <load-on-startup>1</load-on-startup>

     </servlet>

     <servlet-mapping>

         <servlet-name>springmvc</servlet-name>

         <url-pattern>*.do</url-pattern>

     </servlet-mapping>

第三步：配置hibernate

将hibernate的相关配置放到spring配置文件applicationContext.xml里面

<!-- 自动读取配置文件 -->

    <context:property-placeholder location="classpath:spring.properties" />

    <!-- 配置数据源 -->

    <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"

        destroy-method="close">

        <property name="driverClassName" value="${jdbc.driverClassName}" />

        <property name="url" value="${jdbc.url}" />

        <property name="username" value="${jdbc.username}" />

        <property name="password" value="${jdbc.password}" />

    </bean>

    <!-- 配置sessionFactory-->

    <bean id="sessionFactory"

        class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

        <property name="dataSource" ref="dataSource"></property>

        <!-- hibernate自动扫描 实体类-->

        <property name="packagesToScan">

            <list>

                <value>com.mvn.entity</value>

            </list>

        </property>

        <!-- hibernate属性 -->

        <property name="hibernateProperties">

            <value>

                hibernate.hbm2ddl.auto=${jdbc.hibernate.hbm2ddl.auto}

                hibernate.dialect=${jdbc.hibernate.dialect}

                hibernate.show_sql=${jdbc.hibernate.show_sql}

            </value>

        </property>

    </bean>

    <!-- 事务管理器 -->

    <bean id="transactionManager"

        class="org.springframework.orm.hibernate3.HibernateTransactionManager">

        <property name="sessionFactory" ref="sessionFactory" />

    </bean>

    <tx:annotation-driven transaction-manager="transactionManager" />

由于用到了需要读取propertie文件，因此要新增

 jdbc.driverClassName=com.mysql.jdbc.Driver

 jdbc.url=jdbc:mysql://localhost:3306/mvn

 jdbc.username=root

 jdbc.password=root

 jdbc.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

 jdbc.hibernate.show_sql=true

 jdbc.hibernate.hbm2ddl.auto=update

第四步：编写对应的java和jsp代码

创建entity类

 package com.mvn.entity;

 import javax.persistence.Entity;

 import javax.persistence.GeneratedValue;

 import javax.persistence.Id;

 import javax.persistence.Table;

 @Entity

 @Table(name="t_user")

 public class User {

     private Integer id;

     private String name;

     private String password;

     @Id

     @GeneratedValue

     public Integer getId() {

         return id;

     }

     public void setId(Integer id) {

         this.id = id;

     }

     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;

     }

 }

创建dao类

 package com.mvn.dao;

 import javax.annotation.Resource;

 import org.hibernate.SessionFactory;

 import org.hibernate.classic.Session;

 import org.springframework.stereotype.Repository;

 import com.mvn.entity.User;

 @Repository

 public class UserDao {

     @Resource

     SessionFactory sessionFactory;

     public void save(User user){

         Session session = sessionFactory.openSession();

         session.save(user);

     }

 }

创建service类

 package com.mvn.service;

 import javax.annotation.Resource;

 import org.springframework.stereotype.Service;

 import org.springframework.transaction.annotation.Transactional;

 import com.mvn.dao.UserDao;

 import com.mvn.entity.User;

 @Service

 public class UserService {

     @Resource

     UserDao userDao;

     @Transactional

     public void save(User user){

         userDao.save(user);

     }

 }

创建控制器

 package com.mvn.controller;

 import javax.annotation.Resource;

 import org.springframework.stereotype.Controller;

 import org.springframework.web.bind.annotation.RequestMapping;

 import com.mvn.entity.User;

 import com.mvn.service.UserService;

 @Controller

 public class SaveUser {

     @Resource

     UserService userService;

     @RequestMapping(value="/saveUser")

     public String saveUser(User user){

         userService.save(user);

         return "saveSucess";

     }

 }

创建jsp文件：WEB-INF\jsp\saveSucess.jsp

 <%@ 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>

 Hello

 恭喜！

 整合成功

 </body>

 </html>

　　至此代码写完了，完整的目录结构为：

第五步：进行测试

创建数据库
启动tomcat，由于我们配置了hibernate属性hibernate.hbm2ddl.auto=update，因此会在tomcat启动完成后自动生成表t_user
通过页面访问

　　　4.数据库生成数据

至此，整合工作完成。

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