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spring整合jpa

2024-10-28 01:56:39   207人阅读

1.1.  Spring整合jpa

1.1.1.  新建工程

1.1.2.  引入jar包

1.        所使用hibernat版本：hibernate-release-4.3.7.Final，Lib\jpa目录和lib\required目录下所有的jar包，

2.        mysql驱动包

3.        spring版本spring-framework-4.1.3.RELEASE，libs下所有的jar包

4.        tomcat jdbc连接池 tomcat-jdbc-7.0.53.jar和tomcat-juli-7.0.53.jar

5.        日志包commons-logging-1.1.3.jar

6.        aopalliance-1.0.jar

7.        。。。。。。

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1.1.3.  持久化配置文件persistence.xml

persistence.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<persistencexmlns="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指定持久化单元的名字

       transaction-type指定事务类型为本地事务

  -->

  <persistence-unitname="jpaDemo"transaction-type="RESOURCE_LOCAL">

      <properties>

         <propertyname="hibernate.dialect"value="org.hibernate.dialect.MySQL5Dialect"/>

         <propertyname="hibernate.connection.driver_class"value="com.mysql.jdbc.Driver"/>

         <propertyname="hibernate.connection.username"value="root"/>

         <propertyname="hibernate.connection.password"value="root"/>

         <propertyname="hibernate.connection.url"value="jdbc:mysql://localhost:3306/mysql?useUnicode=true&amp;characterEncoding=UTF-8"/>

         <propertyname="hibernate.hbm2ddl.auto"value="update"/>

         <propertyname="hibernate.show_sql"value="true"/>

      </properties>

  </persistence-unit>

</persistence>

 

1.1.4.  实体类Person.xml

Person.xml

package com.morris.entity;

 

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.Id;

 

@Entity

public class Person {

 

         @Id

         @GeneratedValue

         private Integer id;

 

         private String name;

 

         private Integer age;

 

         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 Integer getAge() {

                   return age;

         }

 

         public void setAge(Integer age) {

                   this.age = age;

         }

 

         public Person( String name, Integer age) {

                   super();

                   this.name = name;

                   this.age = age;

         }

 

         public Person() {

                   super();

                   // TODO Auto-generated constructor stub

         }

 

         @Override

         public String toString() {

                   return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";

         }

 

}

1.1.5.  Dao接口

IpersonDao.Java

package com.morris.dao.inter;

 

import com.morris.entity.Person;

 

public interface IPersonDao {

 

    void save(Person person);

}

 

1.1.6.  Dao接口具体实现类

PersonDaoImpl.java

package com.morris.dao.impl;

 

import javax.persistence.EntityManager;

import javax.persistence.PersistenceContext;

import javax.transaction.Transactional;

 

import org.springframework.stereotype.Repository;

 

import com.morris.dao.inter.IPersonDao;

import com.morris.entity.Person;

 

@Repository("personDao")

public class PersonDaoImpl implements IPersonDao {

        

         @PersistenceContext

         private EntityManager entityManager;

 

         @Transactional

         public void save(Person person) {

                   entityManager.persist(person);

         }

 

}

1.1.7.  Service接口

IpersonService.java

package com.morris.service.inter;

 

import com.morris.entity.Person;

 

public interface IPersonService {

    void save(Person person);

}

 

1.1.8.  Service接口具体实现类

PersonServiceImpl.java

package com.morris.service.impl;

 

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

 

import com.morris.dao.inter.IPersonDao;

import com.morris.entity.Person;

import com.morris.service.inter.IPersonService;

 

@Service("personService")

public class PersonServiceImpl implements IPersonService {

 

         @Autowired

         private IPersonDao personDao;

        

         public void save(Person person) {

 

                   personDao.save(person);

         }

 

}

1.1.9.  Spring配置文件

Spring.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"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:p="http://www.springframework.org/schema/p"xmlns:cache="http://www.springframework.org/schema/cache"

    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-3.1.xsd  

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

          http://www.springframework.org/schema/context/spring-context-3.1.xsd  

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

          http://www.springframework.org/schema/aop/spring-aop-3.1.xsd  

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

          http://www.springframework.org/schema/tx/spring-tx-3.1.xsd

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

          http://www.springframework.org/schema/cache/spring-cache-3.1.xsd

          http://www.springframework.org/schema/data/jpa

          http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

 

 

    <!-- 数据源 -->

    <beanid="dataSource"class="org.apache.tomcat.jdbc.pool.DataSource">

       <propertyname="driverClassName"value="com.mysql.jdbc.Driver"/>

       <propertyname="url"value="jdbc:mysql://localhost:3306/mysql"/>

       <propertyname="username"value="root"/>

       <propertyname="password"value="root"/>

       <propertyname="initialSize"value="5"/>

       <propertyname="minIdle"value="5"/>

       <propertyname="maxIdle"value="30"/>

       <propertyname="maxActive"value="100"/>

       <propertyname="maxWait"value="1000"/>

    </bean>

 

    <beanid="entityManagerFactory"

        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">

       <propertyname="dataSource"ref="dataSource"/>

       <propertyname="persistenceXmlLocation"value="classpath:META-INF/persistence.xml"/>

       <propertyname="persistenceUnitName"value="jpaDemo"/>

       <propertyname="jpaVendorAdapter">

           <beanclass="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">

              <propertyname="showSql"value="true"/>

              <propertyname="generateDdl"value="false"/>

           </bean>

       </property>

    </bean>

 

 

 

 

    <!-- 定义扫描根路径，不使用默认的扫描方式 -->

    <context:component-scanbase-package="com.morris"

       use-default-filters="false">

       <!-- 扫描符合@Service @Repository的类 -->

       <context:include-filtertype="annotation"

           expression="org.springframework.stereotype.Service"/>

       <context:include-filtertype="annotation"

           expression="org.springframework.stereotype.Repository"/>

    </context:component-scan>

 

 

    <tx:annotation-driventransaction-manager="transactionManager"/>

 

 

    <beanid="transactionManager"class="org.springframework.orm.jpa.JpaTransactionManager">

       <propertyname="entityManagerFactory"ref="entityManagerFactory"/>

    </bean>

 

 

 

    <jpa:repositoriesbase-package="com.morris.dao"

       entity-manager-factory-ref="entityManagerFactory"

       transaction-manager-ref="transactionManager"/>

</beans>

1.1.10.          测试文件

TestPerson.java

package com.morris.test;

 

 

import org.junit.Test;

import org.springframework.context.support.ClassPathXmlApplicationContext;

 

import com.morris.entity.Person;

import com.morris.service.inter.IPersonService;

 

public class TestPerson {

 

   

    @Test

    public void save() {

      

      

       ClassPathXmlApplicationContext applicationContext =new ClassPathXmlApplicationContext("spring.xml");

      

       IPersonService personService = (IPersonService) applicationContext.getBean("personService");

      

       personService.save(new Person("morris131",131));

 

      

      

    }

 

}

 

1.1.11.          结果

后台打印sql语句

Hibernate: insert into Person (age, name) values (?, ?)

 

spring整合jpa


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