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基于注解的SpringMVC整合JPA

2013-09-24 00:22:00.0 JPA  
导读:点我下载工程代码实体类Departmentpackage com.sj.bean;import java.util.Set;import javax.persistence.CascadeType;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedVal...。。。

点我下载工程代码
实体类
Department

package com.sj.bean;

import java.util.Set;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;

@Entity
@Table(name
="department",catalog="sj")
public class Department {
   
   
private int id;
   
private String name;
   
private Set<Employee> sets;
    @Id
    @Column(name
="id")
    @GeneratedValue(strategy
=GenerationType.AUTO)
   
public int getId() {
       
return id;
    }
   
public void setId(int id) {
       
this.id= id;
    }
    @Column(name
="name")
   
public String getName() {
       
return name;
    }
   
public void setName(String name) {
       
this.name= name;
    }
    @OneToMany(mappedBy
="department",cascade=CascadeType.ALL)
   
public Set<Employee> getSets() {
       
return sets;
    }
   
public void setSets(Set<Employee> sets) {
       
this.sets= sets;
    }
   
}
Employee
package com.sj.bean;

import java.io.Serializable;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;


@SuppressWarnings(
"serial")
@Entity
@Table(name
="employee",catalog="sj")
public class Employee implements Serializable{
   
   
private int id;
   
private String name;
   
private Department department;
    @Id
    @GeneratedValue(strategy
=GenerationType.AUTO)
    @Column(name
="id")
   
public int getId() {
       
return id;
    }
   
public void setId(int id) {
       
this.id= id;
    }
    @Column(name
="name")
   
public String getName() {
       
return name;
    }
   
public void setName(String name) {
       
this.name= name;
    }
    @ManyToOne(cascade
=CascadeType.ALL)
    @JoinColumn(name
="deptid")
   
public Department getDepartment() {
       
return department;
    }
   
public void setDepartment(Department department) {
       
this.department= department;
    }
   
}
BaseDAO
package com.sj.dao;

import java.util.List;

public interface BaseDAO<T> {
   
    List
<T> listAll();
    Object findById(Class
<T> c,int id);
   
boolean save(Object object);
   
boolean update(Object object);
   
boolean delete(Object object);
   
}   
BaseDAOImpl
package com.sj.dao;

import java.util.List;

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

import org.springframework.stereotype.Component;

@Component(
"baseDAO")
public class BaseDAOImpl<T>implements BaseDAO<T> {

    @PersistenceContext(unitName
="sjPU")
   
private EntityManager entityManager;
   
   
   
public boolean delete(Object object) {
       
try {
            entityManager.remove(object);
           
returntrue;
        }
catch (Exception e) {
            e.printStackTrace();
        }
       
returnfalse;
    }

   
public Object findById(Class<T> c,int id) {
       
try {
           
return entityManager.find(c, id);
        }
catch (Exception e) {
            e.printStackTrace();
        }
       
returnnull;
    }

   
public boolean save(Object object) {
       
try {
            entityManager.persist(object);
           
returntrue;
        }
catch (Exception e) {
            e.printStackTrace();
        }
       
returnfalse;
    }

   
public boolean update(Object object) {
       
try {
            entityManager.merge(object);
           
returntrue;
        }
catch (Exception e) {
            e.printStackTrace();
        }
       
returnfalse;
    }

    @SuppressWarnings(
"unchecked")
   
public List<T> listAll() {
       
try {
            Query query
=entityManager.createQuery(" from Employee");
           
return query.getResultList();
        }
catch (Exception e) {
            e.printStackTrace();
        }
       
returnnull;
    }

}
BaseService
package com.sj.service;

import java.util.List;

public interface BaseService<T> {
   
    List
<T> listAll();
    Object findById(Class
<T> c,int id);
   
boolean save(Object object);
   
boolean update(Object object);
   
boolean delete(Object object);
}
BaseServiceImpl
package com.sj.service;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.sj.dao.BaseDAO;

@Component(
"baseServiceImpl")
public class BaseServiceImpl<T>implements BaseService<T>{

    @Resource(name
="baseDAO")
   
private BaseDAO<T> baseDAO;
   
   
public BaseDAO<T> getBaseDAO() {
       
return baseDAO;
    }

   
public void setBaseDAO(BaseDAO<T> baseDAO) {
       
this.baseDAO= baseDAO;
    }

    @Transactional(propagation
=Propagation.REQUIRED)
   
public boolean delete(Object object) {
       
return baseDAO.delete(object);
    }

    @Transactional(propagation
=Propagation.REQUIRED)
   
public Object findById(Class<T> c,int id) {
       
return baseDAO.findById(c, id);
    }

    @Transactional(propagation
=Propagation.REQUIRED)
   
public List<T> listAll() {
       
return baseDAO.listAll();
    }

    @Transactional(propagation
=Propagation.REQUIRED)
   
public boolean save(Object object) {
       
return baseDAO.save(object);
    }

    @Transactional(propagation
=Propagation.REQUIRED)
   
public boolean update(Object object) {
       
return baseDAO.update(object);
    }
   
}
EmployeeAction
package com.sj.action;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import com.sj.bean.Employee;
import com.sj.service.BaseService;

@Controller
@RequestMapping(
"/employee.action")
public class EmployeeAction {
   
    @SuppressWarnings(
"unchecked")
    @Resource(name
="baseServiceImpl")
   
private BaseService service;
   
   
    @SuppressWarnings(
"unchecked")
    @RequestMapping(method
=RequestMethod.GET,params="method=listAll")
   
public ModelAndView listAll(){
        List
<Employee> list=service.listAll();
       
returnnew ModelAndView("list").addObject("list", list);
    }
   
   
    @ResponseBody
    @RequestMapping(params
="method=listOther")
   
public String listOther(){
        String str
="HelloWorld";
       
return str;
    }
}
TestApp
package com.sj.test;

import javax.annotation.Resource;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.sj.bean.Department;
import com.sj.bean.Employee;
import com.sj.service.BaseService;

@ContextConfiguration(locations
="file:D:\\Program Files\\MyEclipse 8.5-workspace\\sj\\WebRoot\\WEB-INF\\applicationContext.xml")
@RunWith(SpringJUnit4ClassRunner.
class)
public class TestApp {
   
    @SuppressWarnings(
"unchecked")
    @Resource(name
="baseServiceImpl")
    BaseService baseService;
   
    @Test
   
public void save(){
        Employee employee
=new Employee();
        employee.setName(
"张三");
        Department department
=new Department();
        department.setName(
"软件测试组");
        employee.setDepartment(department);
        baseService.save(employee);
    }
   
    @SuppressWarnings(
"unchecked")
    @Test
   
public void query(){
        Employee employee
=(Employee) baseService.findById(Employee.class,2);
        System.out.println(employee.getId()
+"\t"+employee.getName()+"\t"+employee.getDepartment().getName());
    }
   
}   
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:aop
="http://www.springframework.org/schema/aop"
    xmlns:tx
="http://www.springframework.org/schema/tx"
    xmlns:context
="http://www.springframework.org/schema/context"
    xsi:schemaLocation
="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.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">
   
   
<context:annotation-config/>
   
<context:component-scan base-package="com.sj.*"/>
   
<aop:aspectj-autoproxy/>
   
   
<tx:annotation-driven transaction-manager="transactionManager"/>

   
<bean id="entityManagerFactory"class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
       
<property name="persistenceUnitName" value="sjPU"/>
       
<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml">property>
   
bean>
   
<bean id="transactionManager"class="org.springframework.orm.jpa.JpaTransactionManager">
       
<property name="entityManagerFactory" ref="entityManagerFactory"/>
   
bean>
beans>
dispatcherServlet-servlet.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:aop
="http://www.springframework.org/schema/aop"
    xmlns:tx
="http://www.springframework.org/schema/tx"
    xmlns:context
="http://www.springframework.org/schema/context"
    xsi:schemaLocation
="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.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">
   
   
<context:component-scan base-package="com.sj.action"/>
   
<bean id="defaultAnnotationHandlerMapping"class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>
   
<bean id="annotationMethodHandlerAdapter"class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
       
<property name="messageConverters">
           
<list>
               
<beanclass="org.springframework.http.converter.StringHttpMessageConverter">
                   
<property name="supportedMediaTypes">
                       
<list>
                           
<value>text/html;charset=utf-8value>
                           
<value>text/xmlvalue>
                           
<value>text/plainvalue>
                       
list>
                   
property>
               
bean>
           
list>
       
property>
   
bean>
   
   
<bean id="internalResourceViewResolver"class="org.springframework.web.servlet.view.InternalResourceViewResolver">
       
<property name="suffix" value=".jsp">property>
       
<property name="prefix" value="/">property>
       
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
   
bean>
   
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">
  <welcome-file-list>
   
<welcome-file>index.jspwelcome-file>
 
welcome-file-list>
 
 
<listener>
     
<listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
 
listener>
       
<context-param>
         
<param-name>contextConfigLocationparam-name>
         
<param-value>/WEB-INF/applicationContext.xmlparam-value>
     
context-param>
 
<servlet>
     
<servlet-name>dispatcherServletservlet-name>
     
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
     
<load-on-startup>1load-on-startup>
 
servlet>
 
<servlet-mapping>
     
<servlet-name>dispatcherServletservlet-name>
     
<url-pattern>*.actionurl-pattern>
 
servlet-mapping>
 
web-app>
src/META-INF/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="sjPU" transaction-type="RESOURCE_LOCAL">
       
<provider>org.hibernate.ejb.HibernatePersistenceprovider>
       
<properties>
           
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
           
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/sj"/>
           
<property name="hibernate.connection.username" value="root"/>
           
<property name="hibernate.connection.password" value="root"/>
           
<property name="hibernate.show_sql" value="true"/>
           
<property name="hibernate.format_sql" value="true"/>
           
<property name="hibernate.hbm2ddl.auto" value="update"/>
       
properties>
   
persistence-unit>

persistence>
list.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
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>雇员信息列表title>
head>
<body>
   
<c:if test="${empty requestScope.list}">
        对不起,没有要显示的记录
!!!!
   
c:if>
   
<c:if test="${!empty requestScope.list}">
       
<c:forEach items="${requestScope.list}" var="s">
           
<c:out value="${s.id}"/>
           
<c:out value="${s.name}"/>
           
<c:out value="${s.department.name}"/>
           
<br/>
       
c:forEach>
   
c:if>
body>
html>
这里重点关注applicationContext.xml、dispatcherServlet-servlet.xml、EmployeeAction。其中dispatcherServlet-servlet.xml文件的命名规则遵循web.xml中配置的dispatcherServlet servlet的servlet-name属性的值。dispatcherServlet-servlet.xml里面配置了开启SpringMVC的注解解析器以及视图渲染器,和处理response时返回给浏览器的头信息.
点我下载工程代码
posted on 2010-11-02 10:47 雪山飞鹄 阅读(6086) 评论(6)  编辑  收藏 所属分类: springJPA

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