springmvc+jpa(hibernate实现)+spring整合实例

package com.ssh.controller; import java.util.ArrayList; import java.util.List; import java.util.Map; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.Persistence; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.ssh.entity.Student; import com.ssh.service.StudentService; @Controller @RequestMapping("controller/studentcontroller") public class StudentController { @Autowired private StudentService StudentService; @RequestMapping("show") public String show(Map<Object, Object> map) { Student student = new Student("小明", "18", "中国"); try { StudentService.addStudent(student); map.put("mess", "添加成功"); } catch (Exception e) { map.put("mess", "添加失败"); } return "view/student"; } @RequestMapping("add") public String add(Student student){ // 读取jpa(persistence.xml)的配置文件,创建一个EntityManagerFactory用来连接数据库(myjpa是persistence.xml配置文件name属性自定义的名字) EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("myjpa"); // 创建一个EntityManager实体管理器,用来管理对数据库的操作 EntityManager em = entityManagerFactory.createEntityManager(); // 开启事务 em.getTransaction().begin(); // 进行增删改查等持久化操作 em.persist(student); // 提交事务 em.getTransaction().commit(); em.close(); entityManagerFactory.close(); return null; } }