springmvc+spring+mybatis整合实例

shaohan126448

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开发环境：

System：Windows server 2003

WebBrowser：IE6+、Firefox3+

JavaEE Server：tomcat5.

IDE：eclipse、MyEclipse 6.5

Database：MySQL

开发依赖库：

JavaEE5、Spring 3.0.5、Mybatis 3.0.2、myBatis-spring-1.0.0-rc2

参考百度文库：http://wenku.baidu.com/view/34559702a6c30c2259019e4e.html

源码下载：http://download.csdn.net/detail/nosi79998/6486219

1、首先新建一个WebProject 命名为ssi，新建项目时，使用JavaEE5的lib库。然后手动添加需要的jar包，所需jar包如下：

2、添加spring的监听及springMVC的核心Servlet，web.xml内容，内容如下：

<!-- 加载Spring容器配置 -->
  <listener>    
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!-- 设置Spring容器加载配置文件路径 -->
  <context-param>    
      <param-name>contextConfigLocation</param-name>    
      <param-value>classpath:applicationContext-*.xml</param-value>
  </context-param>
  <!--配置Springmvc核心控制器-->
  <servlet>          
        <servlet-name>spmvc</servlet-name>         
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         
  </servlet>    
  <!--为DispatcherServlet建立映射 -->      
  <servlet-mapping>  
        <servlet-name>spmvc</servlet-name>      
        <url-pattern>*.do</url-pattern>    
  </servlet-mapping> 
  <!-- 解决工程编码过滤器 -->
  <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>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>

3、在WEB-INF目录中添加spmvc-servlet.xml，内容如下：

<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"
    xsi:schemaLocation="   
    http://www.springframework.org/schema/beans   
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd   
    http://www.springframework.org/schema/context   
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    <!--注解控测器-->
    <context:component-scan base-package="com.hoo" />
   
    <!--  annotation默认的方法映射适配器 -->    
    <bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />     
    <bean id="handlerAdapter" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
   
 
</beans>

4、在src目录下添加applicationContext-common.xml，内容如下：

<!-- 配置DataSource数据源 -->  
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  
       <property name="driverClassName" value="com.mysql.jdbc.Driver"/>  
       <property name="url" value="jdbc:mysql://192.168.1.36:3306/test"/>  
       <property name="username" value="fssykj"/>  
       <property name="password" value="fssykj"/> 
    </bean>
    <!-- 配置SqlSessionFactoryBean --> 
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 
       <property name="dataSource" ref="dataSource"/>  
       <property name="configLocation" value="classpath:mybatis.xml"/> 
       <!-- mapper和resultmap配置路径 -->   
       <property name="mapperLocations">  
            <list>  
            <!-- 表示在com.hoo.resultmap包或以下所有目录中，以-resultmap.xml结尾所有文件 --> 
             <value> classpath:com/hoo/mapper/*.xml</value > 
            </list>       
       </property>
    </bean>
    <!-- 通过扫描的模式，扫描目录在com/hoo/mapper目录下 -->  
    <bean  class="org.mybatis.spring.annotation.MapperScannerPostProcessor">  
       <property name="basePackage" value="com.hoo.mapper"/>  
       <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />  
    </bean>

上面的配置最先配置的是DataSource，这里采用的是jdbc的DataSource；

然后是SqlSessionFactoryBean，这个配置比较关键。SqlSessionFactoryBean需要注入DataSource数据源，其次还要设置configLocation也就是mybatis的xml配置文件路径，完成一些关于mybatis的配置，如settings、mappers、plugin等；

如果使用MapperScannerPostProcessor模式，会自动将basePackage中配置的包路径下的所有带有@Mapper标注的Mapper(dao)层的接口生成代理，替代原来我们的Mapper实现。

5、AccountMapper接口内容如下：

@Mapper("mapper") 
public interface AccountMapper extends SqlMapper {
    public List<Account> getAllAccount(); 
    public Account getAccount();   
    public Account getAccountById(String id); 
    public Account getAccountByNames(String spring);  
    @Select("select * from account where username = #{name}")  
    public Account getAccountByName(String name);  
    public void addAccount(Account account);   
    public void editAccount(Account account); 
    public void removeAccount(int id);
}

6、实体类和account-resultmap.xml

private static final long serialVersionUID = -7970848646314840509L;  
    private Integer accountId;  
    private Integer status;  
    private String username;    
    private String password;  
    private String salt;   
    private String email;   
    private Integer roleId;     
    //getter、setter    
    @Override  
    public String toString() 
    {       
        return this.accountId + "#" + this.status + "#" + this.username +  "#" +  
        this.password +  "#" + this.email +  "#" + this.salt + "#" + this.roleId;   
    }

account-resultmap.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">
<!-- namespace和定义的Mapper接口对应，并实现其中的方法 -->
<mapper namespace="com.hoo.mapper.AccountMapper">
   <resultMap type="com.hoo.entity.Account" id="accountResultMap">
        <id property="accountId" column="account_id" />
        <result property="username" column="username" />
        <result property="password" column="password" />
        <result property="status" column="status" />
   </resultMap>
   <!-- id和mapper接口中的方法名对应，resultType使用mybatis.xml中的别名 -->
   <select id="getAccount" resultType="account">
         <![CDATA[         
              select * from account limit 1   
         ]]> 
   </select>     
   <select id="getAllAccount" resultType="list" resultMap="accountResultMap">  
         <![CDATA[     
              select * from account   
         ]]>    
   </select>    
         <!-- accountResultMap是account-resultmap.xml中定义的resultmap -->  
             <select id="getAccountById" parameterType="string" resultType="com.hoo.entity.Account" resultMap="accountResultMap">    
         <![CDATA[        
             select * from account where account_id = #{id}    
         ]]>    
   </select>   
   <!-- accountMap.accountResultMap是account-resultmap.xml中定义的resultmap，通过namespace.id找到 -->  
   <select id="getAccountByNames" parameterType="string" resultMap="accountResultMap">  
         <![CDATA[        
             select * from account where username = #{name}        
         ]]>    </select>   
   <sql id="user_name_pwd">  
         username, password  
   </sql>       
   <!-- 自动生成id策略 -->  
   <insert id="addAccount" useGeneratedKeys="true" keyProperty="account_id" parameterType="account">   
         insert into account(account_id, status, username, password)   
         values(#{accountId}, #{status}, #{username}, #{password})   
   </insert>       
   <!-- 根据selectKey语句生成主键 -->  
   <insert id="addAccount4Key" parameterType="account">   
        <selectKey keyProperty="account_id" order="BEFORE" resultType="int">    
          select cast(random() * 10000 as Integer) a from #Tab    
        </selectKey>        
        insert into account(account_id, status, username, password) 
        values(#{accountId}, #{status}, #{username}, #{password})    
   </insert>        
   <update id="editAccount" parameterType="account"> 
        update account set        
        status = #{status},
        username = #{username},       
        password = #{password}        
        where account_id = #{accountId}    
   </update>        
   <delete id="removeAccount" parameterType="int">
        delete from account where account_id = #{id}  
   </delete>
</mapper>

7、在src目录中添加applicationContext-beans.xml内容如下：

<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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> 
   <!-- 注解探测器 ， 在JUnit测试的时候需要--> 
   <context:component-scan base-package="com.hoo"/> 
 </beans>

这里配置bean对象，一些不能用annotation注解的对象就可以配置在这里

8、在src目录中添加mybatis.xml，内容如下：

<?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>

    <!-- 别名 -->

    <typeAliases>

        <typeAlias type="com.hoo.entity.Account" alias="account"/>

    </typeAliases>

</configuration>

在这个文件放置一些全局性的配置，如handler、objectFactory、plugin、以及mappers的映射路径（由于在applicationContext-common中的SqlSessionFactoryBean有配置mapper的location，这里就不需要配置）等

9、定义AccountDao接口及实现代码，代码如下：

public interface AccountDao<T> {
    public boolean addAccount(T entity) throws DataAccessException;
    public T getAccount(Integer id) throws DataAccessException; 
    public List<T> getList() throws DataAccessException;

}

接口实现

import java.util.List;
import javax.inject.Inject;
import org.springframework.dao.DataAccessException;
import org.springframework.stereotype.Repository;
import org.springframework.beans.factory.annotation.Autowired;
import com.hoo.dao.AccountDao;
import com.hoo.entity.*;
import com.hoo.mapper.*;
import org.springframework.beans.factory.annotation.Qualifier;
@SuppressWarnings("unchecked")
@Repository("accountDaoImpl")
public class AccountDaoImpl<T extends Account> implements AccountDao<T> {

    @Autowired(required=false)
    @Qualifier("mapper")
    private AccountMapper mapper;
    public boolean addAccount(T entity) throws DataAccessException {
         boolean flag=false;
         try{
             mapper.addAccount(entity);
             flag=true;
         }
         catch(DataAccessException e)
         {
             flag=false;
             throw e;
         }
         return flag;
    }
    public T getAccount(Integer id) throws DataAccessException { 
        T entity = null; 
       try
       { 
           entity = (T)mapper.getAccountById(String.valueOf(id));  
       }
       catch(DataAccessException e) 
       { throw e;      }  
       return entity;
    }
    public List<T> getList() throws DataAccessException {
        return (List<T> )mapper.getAllAccount();
    }

}

10、服务层AccountBiz接口及实现代码

接口：

public interface AccountBiz<T> {
   public boolean addAccount(T entity) throws DataAccessException;
   public T getAccount(Integer id) throws DataAccessException;
   public List<T> getList() throws DataAccessException;
}

实现代码：

package com.hoo.biz.impl;

import java.util.List;

import org.springframework.dao.DataAccessException;

import com.hoo.biz.AccountBiz;
import com.hoo.entity.*;
import javax.inject.Inject;
import com.hoo.dao.*;
import org.springframework.stereotype.Service;
import com.hoo.exception.BizException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
@Service("accountBizImpl")
public class AccountBizImpl<T extends Account> implements AccountBiz<T> {

    @Autowired
    @Qualifier("accountDaoImpl")
    private AccountDao<T> dao;
    public boolean addAccount(T entity) throws DataAccessException {
        if(entity==null){
            throw new BizException(Account.class.getName()+"对象参数为empty!");
            
        }
        return dao.addAccount(entity);
    }

    public T getAccount(Integer id) throws DataAccessException {
         return dao.getAccount(id);
    }

    public List getList() throws DataAccessException {
        return dao.getList();
    }

}

11、 springMVC的控制器，AccountController代码如下：

package com.hoo.controller;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.beans.factory.annotation.Autowired;
import com.hoo.biz.AccountBiz;
import com.hoo.entity.Account;
import org.springframework.beans.factory.annotation.Qualifier;
@Controller("accountController")
@RequestMapping("/account")
public class AccountController {
   @Autowired
   @Qualifier("accountBizImpl")
   private AccountBiz<Account> biz;
   
   @RequestMapping("/add")
   public String add(@RequestParam String username, @RequestParam String password, @RequestParam String status)
   {   
       Integer stat=Integer.valueOf(status);
       Account acc=new Account(username,password,stat);
       
       System.out.println(acc);
       biz.addAccount(acc);
       return "redirect:/account/list.do";
   }
   @RequestMapping("/get")
   public String get(Integer id,Model model)
   {
       System.out.println("###ID:"+id);
       model.addAttribute(biz.getAccount(id));
       return "/show.jsp";
   }
   @RequestMapping("/list")
   public String list(Model model)
   {
       model.addAttribute("list",biz.getList());
       return "/list.jsp";
   }
   @ExceptionHandler(Exception.class)
   public String exception(Exception e,HttpServletRequest request)
   {
       request.setAttribute("exception", e);
       return "/error.jsp";
   }
}

12、基本页面代码

index.jsp

<body>
     <h3>整合springmvc3.2+spring+mybatis3.2</h3>
     <a href="account/list.do">查询所有</a><br/>
     <a href="account/add.do?username=abcdef&password=123132&status=2">添加</a><br>
     <a href="account/get.do?id=2">查询</a><br>
  </body>

List.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"  %> 


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>My JSP 'list.jsp' starting page</title>
    
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->

  </head>
  
  <body>
    <c:forEach items="${list}" var="data">
    id:${data.accountId }--name:${data.username }--password:
    ${data.password }<hr/>
    </c:forEach>
  </body>
</html>

show.jsp

<body>
${account }<br>
${account.username }#${account.accountId }
</body>

error.jsp

<body>
    <h2>Exception:${exception }</h2>
    <a href="javascript:document.getElementById('show').style.display='block';void(0);">详细信息</a>
    <div id="show" style="color:red;display:none;">
      <% Exception ex=(Exception)request.getAttribute("exception"); %>
      <%ex.printStackTrace(new PrintWriter(out)); %>
    </div>
</body>

13、以上就基本上完成了整个Spring+SpringMVC+MyBatis的整合了。如果你想添加事务管理，得在applicationContext-common.xml中加入如下配置：

<!-- 配置事务管理器，注意这里的dataSource和SqlSessionFactoryBean的dataSource要一致，不然事务就没有作用了 -->

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

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

</bean>

同时还需要加入aspectjweaver.jar这个jar包；

注意的是：Jdbc的TransactionManager不支持事务隔离级别，我在整个地方加入其它的TransactionManager，增加对transaction的隔离级别都尝试失败！

也许可以用于jpa、jdo、jta这方面的东西。

下载地址：http://download.csdn.net/detail/nosi79998/6486219

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