[转]基于全注解的Spring3.1 mvc、myBatis3.1、Mysql的轻量级项目

摘要对于现在主流的j2ee企业级开发而言，ssh（struts+hibernate+spring）依然是一个事实的标准。由struts充当的mvc调度控制；hibernate的orm持久化映射；spring的ioc和aop的容器环境近乎于完美的框架组合。但是，在实际的开发工作中，由于程序猿对于技术、以及更加快速的解决方案的追求，我们会越来越发现ssh框架所存在的诸多问题和困扰。

spring rest Spring3mvc myBatis

基于REST风格的Spring3 MVC资源映射编程模型，编写的Code真的很优雅。那是相当的惊喜，编程之美。

MyEclipse项目清单

清单1. 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>mySpring3 and myBatis3 Project</display-name>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml</param-value>

</context-param>

<filter>

<filter-name>characterEncodingFilter</filter-name>

<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<init-param>

<param-name>encoding</param-name>

<param-value>UTF-8</param-value>

</init-param>

</filter>

<filter-mapping>

<filter-name>characterEncodingFilter</filter-name>

<url-pattern>/*</url-pattern>

</filter-mapping>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<servlet>

<servlet-name>spring3</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:context-dispatcher.xml</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>spring3</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.css</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.js</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.gif</url-pattern>

</servlet-mapping>

<servlet-mapping>

<servlet-name>default</servlet-name>

<url-pattern>*.jpg</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

清单2. 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:tx="http://www.springframework.org/schema/tx"

xmlns:aop="http://www.springframework.org/schema/aop"

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-3.0.xsd

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

http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

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

http://www.springframework.org/schema/context/spring-context-2.5.xsd"

default-init-method="init">

<context:property-placeholder location="classpath:jdbc.properties" />

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

<property name="driverClassName" value="${driver}" />

<property name="url" value="${url}" />

<property name="username" value="${username}" />

<property name="password" value="${password}" />

</bean>

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource" />

</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

<property name="configLocation" value="classpath:mybatis.cfg.xml"></property>

<property name="dataSource" ref="dataSource" />

</bean>

<tx:annotation-driven transaction-manager="transactionManager"/>

<!--

<tx:advice id="txAdvice" transaction-manager="transactionManager">

<tx:attributes>

<tx:method name="create*" propagation="REQUIRED" />

<tx:method name="modify*" propagation="REQUIRED" />

<tx:method name="delete*" propagation="REQUIRED" />

<tx:method name="*" read-only="true" />

</tx:attributes>

</tx:advice>

-->

<!--

<aop:config>

<aop:pointcut id="targetMethod" expression="execution(* com.matol.service.*.*(..))" />

<aop:advisor advice-ref="txAdvice" pointcut-ref="targetMethod" />

</aop:config>

-->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

<property name="basePackage" value="com.matol.mapper" />

</bean>

<!-- 负责注册JSR-250 的注释生效 @Resource MapperScannerConfigurer配置会自动启用mapper注解,可省略当前配置

<bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor"/>

-->

</beans>

清单3. context-dispatcher.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans default-lazy-init="true"

xmlns="http://www.springframework.org/schema/beans"

xmlns:p="http://www.springframework.org/schema/p"

xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:aop="http://www.springframework.org/schema/aop"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation="

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

http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

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

http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd

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

http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<!-- 通过注解，把URL映射到Controller上，该标签默认注册DefaultAnnotationHandlerMapping和AnnotationMethodHandlerAdapter -->

<mvc:annotation-driven />

<!-- annotation默认的方法映射适配器 mvc:annotation-driven注册后可以省略当前配置

<bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />

<bean id="handlerAdapter" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

-->

 

<context:component-scan base-package="com.matol" />

<!-- 加载组装所以配置文件 context:component-scan注册后可以省略当前配置

<context:annotation-config/>

-->

<bean id="viewResolver"

class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />

 

<property name="prefix" value="/" />

<property name="suffix" value=".jsp"></property>

</bean>

<bean id="multipartResolver"

class="org.springframework.web.multipart.commons.CommonsMultipartResolver" p:defaultEncoding="UTF-8" />

</beans>

清单4. jdbc.properties

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/matolDB

username=root

password=root

清单5. mybatis.cfg.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

<typeAliases>

<typeAlias alias="Student" type="com.matol.entity.User" />

</typeAliases>

<mappers>

<mapper resource="com/matol/mapper/UserMapper.xml" />

</mappers>

</configuration>

清单6. matolDB.sql

/*

Navicat MySQL Data Transfer

Source Server : localhost

Source Server Version : 50141

Source Host : localhost:3306

Source Database : matoldb

Target Server Type : MYSQL

Target Server Version : 50141

File Encoding : 65001

Date: 2013-01-23 16:47:52

*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------

-- Table structure for `sys_user`

-- ----------------------------

DROP TABLE IF EXISTS `sys_user`; CREATE TABLE `sys_user` (

`id` int(11) unsigned zerofill NOT NULL AUTO_INCREMENT,

`name` varchar(100) COLLATE utf8_unicode_ci DEFAULT NULL,

`pass` varchar(100) COLLATE utf8_unicode_ci DEFAULT NULL,

`age` int(11) DEFAULT NULL,

PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

清单7. User.java

package com.matol.entity;

import java.io.Serializable;

import org.springframework.stereotype.Repository;

/**

*

* @author matol

* @date 2013-01-23 16:38

*/ @Repository(value = "user") public class User implements Serializable {

private Integer id;

private String name;

private String pass;

private Integer age;

public User(){}

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 String getPass() {

return pass;

}

public void setPass(String pass) {

this.pass = pass;

}

public Integer getAge() {

return age;

}

public void setAge(Integer age) {

this.age = age;

}

清单7. UserMapper.java

package com.matol.mapper;

import java.util.List;

import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional;

import com.matol.entity.User;

/**

*

* @author matol

* @date 2013-01-23 16:38

*/ @Repository(value = "userMapper") @Transactional public interface UserMapper {

Integer create(User user);

Integer delete(Integer id);

Integer modify(User user);

User findById(Integer id);

User findByUser(User user);

List<User> findAll();

List<User> findAll(User user);

Integer count();

}

清单8. UserMapper .xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.matol.mapper.UserMapper">

<resultMap type="com.matol.entity.User" id="resultUser">

<id property="id" column="id"/>

<result property="name" column="name"/>

<result property="pass" column="pass"/>

<result property="age" column="age"/>

</resultMap>

<parameterMap type="com.matol.entity.User" id="paramUser">

<parameter property="id"/>

<parameter property="name"/>

<parameter property="pass"/>

<parameter property="age"/>

</parameterMap>

<insert id="create" parameterType="com.matol.entity.User" >

INSERT INTO sys_user(name,pass,age)

VALUES(#{name},#{pass},#{age})

</insert>

<delete id="delete" parameterType="Integer" >

DELETE FROM sys_user

WHERE id=#{value}

</delete>

<update id="modify" parameterType="com.matol.entity.User" >

UPDATE sys_user

<set>

<if test="name != null">name=#{name},</if>

<if test="pass != null">pass=#{pass},</if>

<if test="age != null">age=#{age},</if>

</set>

WHERE id=#{id}

</update>

<select id="findById" parameterType="Integer" resultMap="resultUser">

SELECT * FROM sys_user

WHERE id=#{value}

</select>

<select id="findAll" resultType="list" resultMap="resultUser">

SELECT * FROM sys_user

</select>

<select id="count" resultType="Integer">

SELECT count(*) FROM sys_user

</select>

</mapper>

清单9. UserService.java

package com.matol.service;

import java.util.List;

import org.springframework.stereotype.Repository;

import com.matol.entity.User;

/**

*

* @author matol

* @date 2013-01-23 16:38

*/ @Repository(value = "userService") public interface UserService {

Integer create(User user);

Integer delete(Integer id);

Integer modify(User user);

User findById(Integer id);

User findByUser(User user);

List<User> findAll();

List<User> findAll(User user);

Integer count();

}

清单10. UserServiceImpl.java

package com.matol.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Repository;

import com.matol.entity.User; import com.matol.mapper.UserMapper; import com.matol.service.UserService;

/**

*

* @author matol

* @date 2013-01-23 16:38

*/ @Repository(value = "userServiceImpl") public class UserServiceImpl implements UserService{

@Resource(name = "userMapper")

private UserMapper userMapper;

public Integer count() {

return userMapper.count();

}

public Integer create(User user) {

return userMapper.create(user);

}

public Integer delete(Integer id) {

return userMapper.delete(id);

}

public List<User> findAll() {

return userMapper.findAll();

}

public List<User> findAll(User user) {

return userMapper.findAll(user);

}

public User findById(Integer id) {

return userMapper.findById(id);

}

public User findByUser(User user) {

return userMapper.findByUser(user);

}

public Integer modify(User user) {

return userMapper.modify(user);

}

清单11. UserController.java

100

101

102

103

104

105

106

107

108

109

110

package com.matol.controller;

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

import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;

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

import com.matol.entity.User; import com.matol.service.UserService;

/**

*

* @author matol

* @date 2013-01-23 16:38

*/ @Controller @RequestMapping(value = "/user") public class UserController {

@Resource(name = "userServiceImpl")

private UserService userService;

/**

* @author matol

* @date 2013-01-23 16:38

* @return

*/

@RequestMapping(value = "**/list")

public ModelAndView getAllUser(HttpServletRequest request,HttpServletResponse response) throws Exception {

Map<String, Object> map = new HashMap<String, Object>();

List<User> result = new ArrayList<User>();

result = userService.findAll();

map.put("result", result);

return new ModelAndView("/user/list", map);

}

/**

* @author matol

* @date 2013-01-23 16:38

* @return

*/

@RequestMapping(value = "**/list/{id}")

public ModelAndView getTheUser(@PathVariable("id") int id){

Map<String, Object> map = new HashMap<String, Object>();

List<User> result = new ArrayList<User>();

result.add(userService.findById(id));

map.put("result", result);

return new ModelAndView("/user/list", map);

}

/**

* @author matol

* @date 2013-01-23 16:38

* @return

*/

@RequestMapping(value = "**/toAdd")

public ModelAndView toAddUser(){

return new ModelAndView("/user/adds");

}

/**

* @author matol

* @date 2013-01-23 16:38

* @return

*/

@RequestMapping(value = "**/doAdd")

public String addUser(User user){

userService.create(user);

Map<String, Object> map = new HashMap<String, Object>();

List<User> result = new ArrayList<User>();

result = userService.findAll();

map.put("result", result);

return "redirect:list";

}

/**

* @author matol

* @date 2013-01-23 16:38

* @return

*/

@RequestMapping(value = "**/delete/{id}")

public String deleteTheUser(@PathVariable("id") int id){

Map<String, Object> map = new HashMap<String, Object>();

userService.delete(id);

List<User> result = new ArrayList<User>();

result = userService.findAll();

map.put("result", result);

return "redirect:/user/list";

}

清单12. index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>

<h3>Spring3.1、MyBatis3.1、MySQL 整合.</h3>

<a href="user/list">查询所有</a><br/>

<a href="user/toAdd">添加记录</a><br/>

</body>

</html>

清单13. 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 XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<title>Insert title here</title>

</head>

<body>

<c:forEach items="${result}" var="item">

<a href="list/${item.id }">${item.name }</a> pass: ${item.pass } --- age: ${item.age } <a href="delete/${item.id }">delete</a><hr/>

</c:forEach>

<a href="toAdd">添加记录</a><br/>

</body>

</html>

清单14. adds.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 XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<title>Insert title here</title>

</head>

<body>

<br/>

<form action="doAdd" method="post">

name:<input type="text" name="name">

pass:<input type="text" name="pass">

age:<input type="text" name="age">

<input type="submit" value="submit">

</form>

<br/>

<a href="list">查询所有</a><br/>

</body>

</html>

lib的jar清单

由于只是一个相对简单的使用范例，所以没有非常标准的注入DAO，以及DAO接口，只是通过Mapper代替过程。不过，道理都是一样，无非就是新添加一层注入而已。

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