Spring+springmvc+mybatis整合案例

今天在整合过程中发生了很多问题，根本原因在于整合jar不完整，导致的NotFoundClass报错，这个错误很经典，一旦jar有误就会发生，我在这里粘贴上我的项目源码，以便于提供大家参考。

源码下载地址：http://download.csdn.net/detail/u013821825/9546000

项目中我用的是spring3.1.2+mybatis3.0.5整合的

项目结构：



1、数据准备

create table
CREATE TABLE `emp` (
`id` int(10) NOT NULL,
`name` varchar(20) DEFAULT NULL,
`age` int(3) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1

INSERT INTO `test`.`emp`(`id`,`name`,`age`) VALUES ( '1','xsx','24');
INSERT INTO `test`.`emp`(`id`,`name`,`age`) VALUES ( '2','mpt','23');

2、实体类

package org.xsx.entity;

public class Emp {
private Integer id;
private String name;
private Integer age;
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 Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}

}

3、映射Mapper配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"
"http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">
<mapper namespace="org.xsx.dao.EmpDao">

<select id="findAll" resultType="org.xsx.entity.Emp">
select id,name,age from emp
</select>

</mapper>

4、映射接口

package org.xsx.dao;

import java.util.List;

import org.xsx.annotation.MyBatisRepository;
import org.xsx.entity.Emp;

/**
* DAO组件
* @author xusha
*
*/
@MyBatisRepository
public interface EmpDao {
public List<Emp> findAll();
}

5、业务控制类

package org.xsx.controller;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.xsx.dao.EmpDao;
import org.xsx.entity.Emp;

@Controller
@RequestMapping("emp")
public class EmpController {
@Resource
private EmpDao empDao;

@RequestMapping("/findEmp.do")
public String find(Model model){
List<Emp> list = empDao.findAll();
model.addAttribute("emps", list);
return "emp/emp_list";
}
}

6、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<servlet>
<servlet-name>SpringMvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
</servlet>

<servlet-mapping>
<servlet-name>SpringMvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<async-supported>true</async-supported>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>

</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>*.do</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

7、spring位置文件

<?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:util="http://www.springframework.org/schema/util" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/test" />
<property name="username" value="root" />
<!-- property池启动时的初始值 -->
<property name="password" value="root" />
<!-- 连接name="initialSize" value="${initialSize}"/> -->
<property name="initialSize" value="1" />
<!-- 连接池的最大值 -->
<property name="maxActive" value="500" />
<!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
<property name="maxIdle" value="2" />
<!-- 最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
<property name="minIdle" value="1" />
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mapperLocations" value="classpath:org/xsx/entity/*.xml" />
</bean>

<!-- 配置MyBatis注解 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="org.xsx.dao" />
<property name="annotationClass" value="org.xsx.annotation.MyBatisRepository" />
</bean>

<!-- 开启注解扫描 -->
<context:component-scan base-package="org.xsx" />
<!-- 开启ResultMapping注解 -->
<mvc:annotation-driven />
<!-- 处理请求转发 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"/>
</bean>

</beans>

8、jsp文件

<%@page pageEncoding="utf-8"
contentType="text/html;charset=utf-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"
prefix="c" %>
<html>
<head></head>
<body>
<table width="60%" cellpadding="2" cellspacing="0">
<tr>
<td>编号</td>
<td>姓名</td>
<td>年龄</td>
</tr>
<c:forEach items="${emps}" var="e">
<tr>
<td>${e.id }</td>
<td>${e.name }</td>
<td>${e.age }</td>
</tr>
</c:forEach>
</table>
</body>
</html>

9、结果