容易的spring整合JPA

简单的spring整合JPA
[url]http://zmx.iteye.com/blog/556452
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最近转载学习的一个实验，项目在附件，所需要的jar包也是在下面，在导入项目后自己把包加进去吧。

实体类：

package com.entity;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;@Entitypublic class Student {private Integer stu_id;private String stu_name;private String stu_sex;private Integer stu_age;private String stu_info;@Id@GeneratedValue(strategy = GenerationType.AUTO)public Integer getStu_id() {return stu_id;}public void setStu_id(Integer stu_id) {this.stu_id = stu_id;}@Column(nullable = false)public String getStu_name() {return stu_name;}public void setStu_name(String stu_name) {this.stu_name = stu_name;}public Integer getStu_age() {return stu_age;}public void setStu_age(Integer stu_age) {this.stu_age = stu_age;}public String getStu_info() {return stu_info;}public void setStu_info(String stu_info) {this.stu_info = stu_info;}public String getStu_sex() {return stu_sex;}public void setStu_sex(String stu_sex) {this.stu_sex = stu_sex;}@Overridepublic int hashCode() {final int PRIME = 31;int result = 1;result = PRIME * result + ((stu_id == null) ? 0 : stu_id.hashCode());return result;}@Overridepublic boolean equals(Object obj) {if (this == obj)return true;if (obj == null)return false;if (getClass() != obj.getClass())return false;final Student other = (Student) obj;if (stu_id == null) {if (other.stu_id != null)return false;} else if (!stu_id.equals(other.stu_id))return false;return true;}}

DAO接口类：

package com.dao;import java.util.List;import com.entity.Student;public interface StudentDao {public void save(Student stu);public void delete(Integer stu_id);public void update(Student stu);public Student getStudentByPK(Integer stu_id);public List<Student> queryAll();}

DAO接口实现类：

package com.impl;import java.util.List;import javax.persistence.EntityManager;import javax.persistence.PersistenceContext;import com.dao.StudentDao;import com.entity.Student;public class StudentDaoImpl implements StudentDao {@PersistenceContextEntityManager em;public void save(Student stu) {em.persist(stu);}public void delete(Integer stu_id) {em.remove(em.getReference(Student.class, stu_id));}public void update(Student stu) {em.merge(stu);}public Student getStudentByPK(Integer stu_id) {return em.find(Student.class, stu_id);}public List<Student> queryAll() {List resultList = em.createQuery("select s from Student s").getResultList();return resultList;}}

服务接口类：

package com.service;import java.util.List;import org.springframework.transaction.annotation.Propagation;import org.springframework.transaction.annotation.Transactional;import com.entity.Student;@Transactionalpublic interface StudentService {public void save(Student stu);public void delete(Integer stu_id);public void update(Student stu);@Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true)public Student getStudentByPK(Integer stu_id);@Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true)public List<Student> queryAll();}

服务实现类：

package com.serviceImpl;import java.util.List;import com.dao.StudentDao;import com.entity.Student;import com.service.StudentService;public class StudentServiceImpl implements StudentService {private StudentDao studao;public void delete(Integer stu_id) {studao.delete(stu_id);}public Student getStudentByPK(Integer stu_id) {return studao.getStudentByPK(stu_id);}public List<Student> queryAll() {return studao.queryAll();}public void save(Student stu) {studao.save(stu);}public void update(Student stu) {studao.update(stu);}public void setStudao(StudentDao studao) {this.studao = studao;}}

服务测试类：

package com.test;import java.util.List;import junit.framework.TestCase;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.entity.Student;import com.service.StudentService;public class StudentServiceTest extends TestCase {public void testSave() {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");StudentService stuMght = (StudentService) context.getBean("studentSerivce");Student stu = new Student();stu.setStu_name("xiaobo");stu.setStu_age(22);stu.setStu_sex("男");stu.setStu_info("C++");stuMght.save(stu);System.out.println(stu);}public void testDelete() {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");StudentService stuMght = (StudentService) context.getBean("studentSerivce");stuMght.delete(3);}public void testUpdate() {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");StudentService stuMght = (StudentService) context.getBean("studentSerivce");Student stu = stuMght.getStudentByPK(4);stu.setStu_age(23);stuMght.update(stu);}public void testGetStudentByPK() {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");StudentService stuMght = (StudentService) context.getBean("studentSerivce");Student stu = stuMght.getStudentByPK(5);System.out.println(stu);}public void testQueryAll() {ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");StudentService stuMght = (StudentService) context.getBean("studentSerivce");List<Student> stuList = stuMght.queryAll();for (Student stu : stuList) {System.out.println(stu.getStu_name());}}}

JPA配置文件persistence.xml：

<?xml version="1.0" encoding="UTF-8"?><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="panshao" transaction-type="RESOURCE_LOCAL"><properties><property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" /><property name="hibernate.hbm2ddl.auto" value="update" /><property name="hibernate.connection.driver_class" value="org.gjt.mm.mysql.Driver" /><property name="hibernate.connection.username" value="root" /><property name="hibernate.connection.password" value="root" /><property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/lee?useUnicode=true&amp;characterEncoding=utf-8" /></properties></persistence-unit></persistence>

spring配置文件beans.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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd           http://www.springframework.org/schema/context                      http://www.springframework.org/schema/context/spring-context-2.5.xsd           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"><context:annotation-config  /><bean id="entityManager"value="panshao"></property></bean><bean id="JPATranManager"ref="entityManager"></property></bean><tx:annotation-driven transaction-manager="JPATranManager" /><bean id="studentDAO"ref="studentDAO"></property></bean></beans>

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