总结篇-Spring-SpringMVC-Hibernate-jpa整合

之前介绍了许多hibernate和JPA的关系，但是说的再多，不如亲手实践一下，本文主要是Spring-SpringMVC-Hibernate-jpa整合，充分用到实践中来。

开发步骤：

1.导入SSH框架整合的jar包

1.1导入SpringMVCj的ar包

1.2导入Hibernate的jar包

1.3导入三方依赖的包

1.4导入mysql驱动包

2.配置web.xml

2.1配置Spring IOC容器

2.2配置SpringMVC的控制器（servlet）

2.3配置编码等过滤器

3.配置SpringMVC

3.1配置自动扫描的包

3.2配置视图解析器

3.3配置静态资源

3.4配置注解

4.配置Spring

4.1配置自动扫描的包

4.2配置数据源

4.3配置DataSource

4.4整合Hibernate

4.4.1配置entityManagerFactory 实体管理器

4.4.2配置事务管理器

4.4.3配置支持注解的事务

4.4.4配置spring-data

工程截图如下：

具体配置如下：

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">
<display-name>Archetype Created Web Application</display-name>

<!-- 配置Spring IOC容器 -->
<context-para
4000
m>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

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

<!-- 配置SpringMVC DispatcherServlet核心控制器-->
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>

<!-- 配置编码方式过滤器,注意，配置在所有过滤器前-->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

SpringMvc.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 
<!-- 配置自动扫描的包-->
<context:component-scan base-package="com.yiibai.controller" use-default-filters="false">
<!-- 加了@Controller的类会被扫描加载-->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

<!-- 配置视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
</bean>

<!-- 配置静态资源-->
<mvc:default-servlet-handler/>

<!-- 配置注解-->
<mvc:annotation-driven/>
</beans>

ApplicationContext.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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tool http://www.springframework.org/schema/tool/spring-tool.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"> 
<!-- 配置自动扫描的包-->
<context:component-scan base-package="com.yiibai" use-default-filters="false">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>

<!-- 配置数据源-->
<context:property-placeholder location="classpath:db.properties"/>

<!-- 配置DataSource-->
<bean id="DataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driverClass}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.user}"/>
<property name="password" value="${jdbc.password}"/>
</bean>

<!-- 配置entityManagerFactory 实体管理器-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="DataSource"/>
<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"/>
<property name="persistenceUnitName" value="lab"/>
</bean>

<!-- 配置事务管理器-->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>

<!-- 配置支持注解的事务-->
<tx:annotation-driven transaction-manager="transactionManager"/>

<!-- -配置Spring data-->
<jpa:repositories base-package="com.yiibai" entity-manager-factory-ref="entityManagerFactory" transaction-manager-ref="transactionManager"/>
</beans>

persistence.xml：

<?xml version="1.0"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
<persistence-unit name="lab" transaction-type="RESOURCE_LOCAL">
<!-- 选择jap持久化实现厂商，这里以hibernate为例-->
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<!-- 数据库语言-->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
<!-- 数据库表自动更新-->
<property name="hibernate.hbm2ddl.auto" value="update"/>
<!-- 数据库显示sql语句操作-->
<property name="hibernate.show_sql" value="false"/>
<!-- 数据库表sql格式化显示-->
<property name="hibernate.format_sql" value="false"/>

<property name="hibernate.jdbc.batch_size" value="10"/>

<property name="hibernate.jdbc.fetch_size" value="18"/>
<!-- 数据库表最大连接数-->
<property name="hibernate.max_fetch_depth" value="8"/>
<!-- 关闭Load方法的延迟加载-->
<property name="hibernate.enable_lazy_load_no_trans" value="true"/>
<!--关联重复问题-->
<property name="hibernate.event.merge.entity_copy_observer" value="allow"/>
</properties>
</persistence-unit>

</persistence>

db.properties：

jdbc.user=root
jdbc.password=workhard
jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/yiibai