巴巴运动网开发学习小记 (11-15)

1.jpa的环境配置  

a.导入jpa所用的jar包，根据jpa的实现框架不同，其jar包也不同  

b.新建如下配置文件src/META-INF/persistence.xml的配置文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <persistence xmlns="http://java.sun.com/xml/ns/persistence" version="1.0">
 3 <persistence-unit name="cnblogs" transaction-type="RESOURCE_LOCAL">
 4     <provider>org.hibernate.ejb.HibernatePersistence</provider>
 5     <properties>
 6             <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
 7             <property name="hibernate.connection.driver_class" value="org.gjt.mm.mysql.Driver"/>    
 8                <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/babasport"/>    
 9                <property name="hibernate.connection.username" value="root"/>    
10                <property name="hibernate.connection.password" value="root"/>
11                <property name="hibernate.max_fetch_depth" value="3"/>    
12                <property name="hibernate.hbm2ddl.auto" value="update"/>
13     </properties>
14 </persistence-unit>
15 </persistence>

c.测试jpa环境(jpa的入口是Persistence类):

2.spring2.5+jpa的环境配置  

a.导入spring所用jar包

b.新建src/beans.xml文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xmlns:tx="http://www.springframework.org/schema/tx"
 5        xmlns:context="http://www.springframework.org/schema/context"
 6        xsi:schemaLocation="http://www.springframework.org/schema/beans
 7            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
 8            http://www.springframework.org/schema/tx
 9               http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
10               http://www.springframework.org/schema/context
11               http://www.springframework.org/schema/context/spring-context-2.5.xsd">
12               
13               <context:annotation-config/>
14               <context:component-scan base-package="cnblogs.xiaoqiu"/>
15               <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
16                       <property name="persistenceUnitName" value="cnblogs"></property>
17                       <property name="loadTimeWeaver">
18                           <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver"/>
19                       </property>
20               </bean>
21               <bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
22                       <property name="entityManagerFactory" ref="entityManagerFactory"></property>
23               </bean>
24               <tx:annotation-driven transaction-manager="txManager"/>                  
25 </beans>

c.测试spring环境(spring的实例化类通过ClassPathXmlApplicationContext)

d.测试spring+jpa集成环境