0
回答
一、导入依赖
<dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> </dependency> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> </dependency>
二、配置jpa
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:jaxws="http://cxf.apache.org/jaxws" 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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/cache
http://www.springframework.org/schema/cache/spring-cache.xsd
http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd
http://www.springframework.org/schema/data/jpa
http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"
default-lazy-init="true">
<context:property-placeholder location="classpath:/config/config.properties" />
<!-- 数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="user" value="${jdbc.user}" />
<property name="password" value="${jdbc.password}" />
<property name="driverClass" value="${jdbc.driverClass}" />
<property name="jdbcUrl" value="${jdbc.jdbcUrl}" />
</bean>
<!-- Jpa Entity Manager 配置 -->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 指定Jpa持久化实现厂商类,这里以Hibernate为例 -->
<property name="jpaVendorAdapter" ref="jpaVendorAdapter"></property>
<!-- 指定Entity实体类包路径 -->
<property name="packagesToScan" value="com.web" />
<!-- 指定JPA属性；如Hibernate中指定是否显示SQL的是否显示、方言等 -->
<property name="jpaProperties">
<props>
<!-- 命名规则 My_NAME->MyName -->
<prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.DefaultComponentSafeNamingStrategy</prop>
<!-- 打印sql语句 -->
<prop key="hibernate.show_sql">true</prop>
<!-- 格式化sql语句 -->
<prop key="hibernate.format_sql">true</prop>
</props>
</property>
</bean>
<bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<!-- 自动检查注解的实体和数据表，如果数据库不存在的标，会根据实体自动生成 -->
<property name="generateDdl" value="false" />
<property name="database" value="HSQL" />
</bean>
<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
<!-- 配置事务 -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<!-- 配置支持基于注解的事务 -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- 重要配置：启用扫描并自动创建代理的功能 -->
<jpa:repositories base-package="com.web" transaction-manager-ref="transactionManager" entity-manager-factory-ref="entityManagerFactory" />
</beans>
三、实现接口
（因为CrudRepository集成的是顶层接口Repository实现了简单的crud操作）
public interface UserInfoRepository extends CrudRepository<UserInfo, Long>{
}
四、注入使用
@Service
public class UserInfoServiceImpl implements UserInfoService {
@Autowired
private UserInfoRepository repository;
@Override
public List<UserInfo> findAll() {
return (List<UserInfo>) repository.findAll();
}
}
参考更多微服务架构内容：http://www.roncoo.com/article/detail/124661
