SpringMVC3.2+JPA使用注解的方式环境搭建

==============================entity=========================================================
package com.jb.pub.entity;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;


/**
 * 用户
 */
@Entity
public class Pubuser implements Serializable {
 private static final long serialVersionUID = 1L;
 @Id
 private String aguid; //
 private String pguid; //
 private Integer pxxh; //
 
 @ManyToOne
 @JoinColumn(name="guid_user")
 private Pubaccinfo guid_gs; // 所属公司
 
 private String guid_group; // 用户组 停用
 private String guid_bm; // 部门
 private String guid_job; // 职务
 private String guid_rsgz; // 工资计算方式 停用
 @Column(length = 30)
 private String acode; // 编码
 
 @Column(length = 150)
 private String phone; // 联系电话
 @Column(length = 150)
 private String mobilephone; // 手机


 @Column(length = 255)
 private String remark; // 备注
 private String photo; // 照片

 
 
 
}
@Entity
public class Pubaccinfo implements Serializable {
 private static final long serialVersionUID = -5067656436423109109L;
 @Id
 private String aguid; //
 private Integer pxxh; //
 
 private String pguid; //用户
 @Column(length = 150)
 private String aname; // 名称

 @OneToMany(cascade=CascadeType.ALL,mappedBy="guid_user",fetch=FetchType.LAZY)
 private Set<Pubuser > guid_user=new HashSet<Pubuser >();//列权限
}

========================================================dao==============================================================
package com.jb.xs.Dao.impl;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.springframework.stereotype.Service;

import com.jb.entity.PubComp;
import com.jb.xs.Dao.TestCaseDao;

@Service
public class TestCaseDaoImpl implements TestCaseDao {
 private EntityManager em = null;

 @PersistenceContext
 public void setEntityManager(EntityManager em) {
  this.em = em;
 }

 @Override
 public void delete(PubComp pc) {
  em.remove(pc);// 删除的方法
  em.persist(pc);// 添加的方法
  em.merge(pc);//更新的方法
  em.createQuery("select p from PubComp p ").getResultList();// 查询的方法
  
 }

 @Override
 public List<PubComp> getPubComp(String sql) {
  // em.find("select p from PubComp");
  return (List<PubComp>) em.createQuery(sql)
    .getResultList();
 }
 
 @Override
 public Object getMaxLvl() {
  // em.find("select p from PubComp");
  return em.createQuery("select max(p.status) from PubComp p ");
 }

 @Override
 public void save(PubComp pc) {
  em.persist(pc);
 }

 @Override
 public void update(PubComp pc) {
  em.merge(pc);
 }

}

=====================================================services================================================================

package com.jb.xs.services.impl;

import java.util.List;

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

import com.jb.entity.PubComp;
import com.jb.xs.Dao.TestCaseDao;
import com.jb.xs.services.TestCaseServices;

@Service
public class TestCaseServicesImpl implements TestCaseServices  {
   @Autowired
 private TestCaseDao testCaseDao;//需要调用的接口对象（dao）
  
 @Override
 public List<PubComp> queryPubComp(String sql) {
  return testCaseDao.getPubComp(sql);
 }
 
 

 @Override
 public void delete(PubComp pc) {
  testCaseDao.delete(pc);
 }

 @Override
 public void save(PubComp pc) {
  testCaseDao.save(pc);
 }

 @Override
 public void update(PubComp pc) {
  testCaseDao.update(pc);
 }


 public TestCaseDao getTestCaseDao() {
  return testCaseDao;
 }

 public void setTestCaseDao(TestCaseDao testCaseDao) {
  this.testCaseDao = testCaseDao;
 }

 @Override
 public Object getMaxStatus() {
  return testCaseDao.getMaxLvl();
 }


}

============================================action===========================================================================
package com.jb.xs.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;

import javax.servlet.http.HttpServletRequest;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.jb.entity.PubComp;
import com.jb.entity.TreeNode;
import com.jb.xs.services.TestCaseServices;

@Controller 
@RequestMapping("student") 
public class IndexController2 { 
   @Autowired
  //需要调用的业务类的接口对象（services）
 private  TestCaseServices testCaseDaoImpl;
  
   @RequestMapping  
 public String load(ModelMap modelMap){
    List<PubComp> pcList=testCaseDaoImpl.queryPubComp("select p from PubComp p ");   
         modelMap.put("list", pcList); //需要返回的数据（pcList）
         return "success";  //需要返回的页面，（success.jsp）  
        
        
     }
  
  
   @RequestMapping("add")  
  public String add(HttpServletRequest request, ModelMap modelMap) throws Exception{  
   PubComp pc=new PubComp();
   Random rd=new Random();
   String aguid=String.valueOf(rd.nextFloat());
   pc.setAguid(aguid);
   pc.setStatus(1);
   pc.setAname("一级菜单:"+aguid);
   //一级菜单
   testCaseDaoImpl.save(pc);
   
   //二级菜单
   String aguid2=String.valueOf(rd.nextFloat());
   pc.setAguid(aguid2);
   pc.setPguid(aguid);
   pc.setAname("二级菜单："+aguid2);
   pc.setStatus(2);
   testCaseDaoImpl.save(pc);
   
   //三级菜单
   String aguid3=String.valueOf(rd.nextFloat());
   pc.setAguid(aguid3);
   pc.setPguid(aguid2);
   pc.setAname("三级菜单："+aguid3);
   pc.setStatus(3);
   testCaseDaoImpl.save(pc);
   
   return "success";//需要返回的页面，（success.jsp）  
    }
  
  
 public TestCaseServices getTestCaseDaoImpl() {
  return testCaseDaoImpl;
 }


 public void setTestCaseDaoImpl(TestCaseServices testCaseDaoImpl) {
  this.testCaseDaoImpl = testCaseDaoImpl;
 }

}

===========================================applicationContext.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:p="http://www.springframework.org/schema/p"
 xmlns:context="http://www.springframework.org/schema/context"
 xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xsi:schemaLocation=" 
    http://www.springframework.org/schema/beans  
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.2.xsd 
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
     http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
     http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
    ">
 <!-- 把标记了@Controller注解的类转换为bean -->
 <context:component-scan base-package="com.jb.*" />
 <mvc:annotation-driven />

  <!--解决web.xml拦截非action路径的问题-->
   <mvc:default-servlet-handler/>
   
   <!--spring管理拦截器  -->
    <mvc:interceptors> 
     <bean class="com.jb.tool.JToolSystemInterceptor" /> 
 </mvc:interceptors>


 <!-- 定义跳转的文件的前后缀 -->
 <bean id="viewResolver"
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <!-- jsp存放的路径，在WebContent文件夹下可以不写 -->
  <property name="prefix" value="/WEB-INF/jsp/" />
  <!-- 指定跳转的页面为.jsp格式 -->
  <property name="suffix" value=".jsp" /> 
 </bean>

 <!--事物托管 springMVC3.2需要的jar为aspectj-1.6.10.jar、aspectjweaver-1.6.9.jar底版本的会报错 -->
 <bean id="entityManagerFactory"
  class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
  <property name="persistenceUnitName" value="test" />
 </bean>
 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
  <property name="entityManagerFactory" ref="entityManagerFactory" />
 </bean>
 <!-- 事物通知 -->
 <tx:advice id="txAdvice" transaction-manager="transactionManager">
  <tx:attributes>
   <tx:method name="save*" propagation="REQUIRED" />
   <tx:method name="del*" propagation="REQUIRED" />

   <tx:method name="update*" propagation="REQUIRED" />
   <tx:method name="*" read-only="true" />
  </tx:attributes>
 </tx:advice>
 <!-- 事物切入 -->

 <aop:config>
  <aop:pointcut id="cut"
   expression="execution(* com.jb.xs.services.impl.*.*(..))" />
  <aop:advisor advice-ref="txAdvice" pointcut-ref="cut" />
 </aop:config>


</beans>

=====================================================web.xml=========================================================
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
 xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name> 
  <servlet>
  <servlet-name>dispather</servlet-name>
  <servlet-class>
   org.springframework.web.servlet.DispatcherServlet
  </servlet-class>
  <init-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>/WEB-INF/applicationContext.xml</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
  <servlet-name>dispather</servlet-name>
  <!-- 访问的路径-->
  <url-pattern>/</url-pattern>
 </servlet-mapping>
 
  <welcome-file-list>
    <welcome-file>/WEB-INF/jsp/index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

==========================================persistence.xml这里是hibernate访问数库=

<?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">

<!--定义持久单元-->
 <persistence-unit name="jubcrm" transaction-type="RESOURCE_LOCAL">
 <!--这里采用Hibernate提供的持久化类-->
  <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <!--定义持久化属性-->
  <properties>
   <!--定义方言、fetch深度、是否显示sql-->
   <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />
   <property name="hibernate.max_fetch_depth" value="3" />
   <property name="hibernate.show_sql" value="true" />
   <!--定义是否自动生成表，create表示每次加载都重新生成，update表示每次加载只是更新表-->
   <property name="hibernate.hbm2ddl.auto" value="update" />
    <!--定义数据库连接的相关属性-->
   <property name="hibernate.connection.driver_class" value="org.postgresql.Driver" />
   <property name="hibernate.connection.url" value="jdbc:postgresql://svr:5432/eqdb" />
   <!--定义数据库连接的用户名、密码等-->
   <property name="hibernate.connection.username" value="postgres" />
   <property name="hibernate.connection.password" value="1.0" />
  </properties>
 </persistence-unit>
</persistence>

====================================================jsp=========================================================
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="student/add" method="post">
<input type="submit" value="添加" />
</form>
<form action="student" method="post">
<input type="submit" value="查询" />
</form>
</body>
</html>

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原文地址：https://www.cnblogs.com/qgc88/p/3289005.html