maven工程下Springmvc+mybatis整合

在上一篇文章中我们已经能够建立起简单的springmvc工程，现在我们继续在上一篇文章的基础上继续整合mybatis

1.在spring文件夹中添加ApplicationContext.xml

里面内容为:

<?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:aop="http://www.springframework.org/schema/aop" 
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
						http://www.springframework.org/schema/beans/spring-beans.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
						http://www.springframework.org/schema/tx 
						http://www.springframework.org/schema/tx/spring-tx.xsd
	">
	
	<!-- 启用注解 -->
	<context:annotation-config />
	
	<!-- 启动组件扫描，排除@Controller组件，该组件由SpringMVC配置文件扫描 -->
	<context:component-scan base-package="com.test">
		 <context:exclude-filter type="annotation"
			expression="org.springframework.stereotype.Controller" /> 
	</context:component-scan>
	
	<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">   
    	<property name="dataSource" ref="dataSource"></property>
 	</bean>
	
	<bean id="propertyConfigurer" class="com.test.dao.EncryptPropertyPlaceholderConfigurer">  
		<property name="locations">  
			<list>  
                <value>/WEB-INF/classes/dbconfig.properties</value>
            </list>  
        </property>  
	</bean> 
	
	<!-- 阿里 druid数据库连接池 -->
	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">  
         <!-- 数据库基本信息配置 -->
         <property name="url" value="${url}" />  
         <property name="username" value="${username}" />  
         <property name="password" value="${password}" />  
         <property name="driverClassName" value="${driverClassName}" />  
         <property name="filters" value="${filters}" />  
   		 <!-- 最大并发连接数 -->
         <property name="maxActive" value="${maxActive}" />
         <!-- 初始化连接数量 -->
         <property name="initialSize" value="${initialSize}" />
         <!-- 配置获取连接等待超时的时间 -->
         <property name="maxWait" value="${maxWait}" />
         <!-- 最小空闲连接数 -->
         <property name="minIdle" value="${minIdle}" />  
   		 <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
         <property name="timeBetweenEvictionRunsMillis" value="${timeBetweenEvictionRunsMillis}" />
         <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
         <property name="minEvictableIdleTimeMillis" value="${minEvictableIdleTimeMillis}" />  
         <property name="validationQuery" value="${validationQuery}" />  
         <property name="testWhileIdle" value="${testWhileIdle}" />  
         <property name="testOnBorrow" value="${testOnBorrow}" />  
         <property name="testOnReturn" value="${testOnReturn}" />  
         <property name="maxOpenPreparedStatements" value="${maxOpenPreparedStatements}" />
         <!-- 打开removeAbandoned功能 -->
         <property name="removeAbandoned" value="${removeAbandoned}" />
         <!-- 1800秒，也就是30分钟 -->
         <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}" />
         <!-- 关闭abanded连接时输出错误日志 -->   
         <property name="logAbandoned" value="${logAbandoned}" />
	</bean>  
	
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="delete*" propagation="REQUIRED" read-only="false" 
			           rollback-for="java.lang.Exception"/>
			<tx:method name="insert*" propagation="REQUIRED" read-only="false" 
			           rollback-for="java.lang.Exception" />
			<tx:method name="update*" propagation="REQUIRED" read-only="false" 
			           rollback-for="java.lang.Exception" />
			<tx:method name="save*" propagation="REQUIRED" read-only="false" 
			           rollback-for="java.lang.Exception" />
			  <tx:method name="edit*" propagation="REQUIRED" read-only="false" 
			           rollback-for="java.lang.Exception" />
		</tx:attributes>
	</tx:advice>
	
	<aop:aspectj-autoproxy proxy-target-class="true"/>
	
	<!-- 事物处理 -->
	<aop:config>
		<aop:pointcut id="pc" expression="execution(* com.test.service..*(..))" />
		<aop:advisor pointcut-ref="pc" advice-ref="txAdvice" />
	</aop:config>

	<!-- 配置mybatis -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    	<property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
        <!-- mapper扫描 -->
        <property name="mapperLocations" value="classpath:mybatis/*/*.xml"></property>
    </bean>
    
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
		<constructor-arg ref="sqlSessionFactory" />
	</bean>
	
</beans>

2.这里需要添加几个文件和jar包

一、首先是ApplicationContext.xml中的
 <value>/WEB-INF/classes/dbconfig.properties</value> ：在resources文件夹下新建dbconfig.properties

dbconfig.properties中的内容为数据库连接参数，如我的:

url:jdbc:oracle:thin:@192.168.0.107:1521:orcl 
driverClassName:oracle.jdbc.driver.OracleDriver
username:tbsl
password:dd0a35e9a198717589c6650322524cab

       
filters:stat
   
maxActive:20
initialSize:1
maxWait:60000
minIdle:10
maxIdle:15
   
timeBetweenEvictionRunsMillis:60000
minEvictableIdleTimeMillis:300000
   
validationQuery:SELECT 'x' from dual
testWhileIdle:true
testOnBorrow:false
testOnReturn:false

maxOpenPreparedStatements:20
removeAbandoned:true
removeAbandonedTimeout:1800
logAbandoned:true

二、然后是ApplicationContext.xml中的5个bean

transactionManager、propertyConfigurer、dataSource(阿里的数据库连接池)、sqlSessionFactory、sqlSessionTemplate,

（直接鼠标移上后面的class，按ctrl能点进去就是等于添加了该bean的jar包，否则没有）

这里除了propertyConfigurer,其他jar直接添加在pom.xml即可

<!-- spring 的基本依赖 结束 -->    
        <!-- 数据库配置 -->
        <dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.9</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.1</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.0</version>
		</dependency>

上面是添加的三个jar包

下面贴出该pom.xml中所有jar包

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>demo</groupId>
  <artifactId>test</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<!-- 设置 Spring 的版本 -->
		<spring.vesion>4.0.4.RELEASE</spring.vesion>
	</properties>
	
	<dependencies>  
        <!-- junit -->  
        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>4.12-beta-3</version>  
            <scope>test</scope>  
        </dependency>  
        <!-- log4j -->  
        <dependency>  
            <groupId>log4j</groupId>  
            <artifactId>log4j</artifactId>  
            <version>1.2.17</version>  
        </dependency>  
          
        <dependency>  
            <groupId>jstl</groupId>  
            <artifactId>jstl</artifactId>  
            <version>1.2</version>  
        </dependency>  
          
        <!-- spring 的基本依赖 开始 -->  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-expression</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-beans</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aop</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context-support</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-tx</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-web</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-jdbc</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aspects</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>4.1.2.RELEASE</version>  
        </dependency>  
        <!-- spring 的基本依赖 结束 -->  
        <!-- spring 的基本依赖 结束 -->    
        <!-- 数据库配置 -->
        <dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.0.9</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>3.2.1</version>
		</dependency>
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.0</version>
		</dependency>
  </dependencies>  
</project>

添加完了之后点击bean之后，应该都能访问
剩下的是propertyConfigurer是用于数据库密码加密的bean，我们自己写个类可以搞定
添加dao包和两个类EncryptPropertyPlaceholderConfigurer和SymmetricEncoder

EncryptPropertyPlaceholderConfigurer类：

package com.test.dao;

import java.util.Properties;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanInitializationException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;



public class EncryptPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer
{
   

    protected void processProperties(ConfigurableListableBeanFactory beanFactory,
                                     Properties props)
        throws BeansException
    {
        try
        {

            String pointKey = "password";
            String password = props.getProperty(pointKey);
             if (password!=null)
            {
                props.setProperty(pointKey,
                    SymmetricEncoder.aesDncode(password));
            }

            super.processProperties(beanFactory, props);
        }
        catch (Exception e)
        {
            logger.error("processProperties", e);
            throw new BeanInitializationException(e.getMessage());
        }
    }
}

SymmetricEncoder类：

package com.test.dao;



import java.math.BigInteger;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;



/**
 * ASE对其加密

 * @author    
 * @version   
 * @see       
 * @since     Weline V100R001
 */
public class SymmetricEncoder
{
   

    //加密规则
    private static String key = "al5htt9gzihppnwc";

    /**  
     * 加密 
     * @param String content 加密字符  
     * @return 加密后的字符
     */
    public static String aesEncode(String content)

    {
        try
        {
            // 密钥补位  
            int plus = 16 - key.length();
            byte[] data = key.getBytes("utf-8");
            byte[] raw = new byte[16];
            byte[] plusbyte = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
            for (int i = 0; i < 16; i++ )
            {
                if (data.length > i)
                    raw[i] = data[i];
                else
                    raw[i] = plusbyte[plus];
            }

            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding"); // 算法/模式/补码方式   
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            byte[] encrypted = cipher.doFinal(content.getBytes("utf-8"));

            //return new Base64().encodeToString(encrypted);//base64  
            return binary(encrypted, 16); //十六进制  
        }
        catch (Exception e)
        {
           return null;
        }
    }

    /**  
     * 解密 
     * @param String content 解密字符
     * @return 解密后的字符
     */
    public static String aesDncode(String content)
        throws Exception
    {
        try
        {

            // 密钥补位  
            int plus = 16 - key.length();
            byte[] data = key.getBytes("utf-8");
            byte[] raw = new byte[16];
            byte[] plusbyte = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
            for (int i = 0; i < 16; i++ )
            {
                if (data.length > i)
                    raw[i] = data[i];
                else
                    raw[i] = plusbyte[plus];
            }

            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);

            //byte[] encrypted1 = new Base64().decode(src);//base64  
            byte[] encrypted1 = toByteArray(content);//十六进制  
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original, "utf-8");
            return originalString;

        }
        catch (Exception e)
        {
             return null;
        }
    }

    /**  
     * 将byte[]转为各种进制的字符串  
     * @param bytes byte[]  
     * @param radix 可以转换进制的范围，从Character.MIN_RADIX到Character.MAX_RADIX，超出范围后变为10进制  
     * @return 转换后的字符
     */
    public static String binary(byte[] bytes, int radix)
    {
        return new BigInteger(1, bytes).toString(radix); // 这里�?1代表正数    
    }

    /** 
     * 16进制的字符串表示转成字节数组 
     * 
     * @param hexString 16进制格式的字符串             
     * @return 转换后的字节数组 
     **/
    public static byte[] toByteArray(String hexString)
    {
        if (hexString.isEmpty())
            throw new IllegalArgumentException(
                "this hexString must not be empty");

        hexString = hexString.toLowerCase();
        final byte[] byteArray = new byte[hexString.length() / 2];
        int k = 0;
        for (int i = 0; i < byteArray.length; i++ )
        {//因为16进制，最多只会占4位，转换成字节需要两16进制的字符，高位在先  
            byte high = (byte) (Character.digit(hexString.charAt(k), 16) & 0xff);
            byte low = (byte) (Character.digit(hexString.charAt(k + 1), 16) & 0xff);
            byteArray[i] = (byte) (high << 4 | low);
            k += 2;
        }
        return byteArray;
    }

    public static void main(String[] args)
        //throws TaibaoException
    {
        // 要加密的字符
        String src = "tbsl";



        // 加密  
        String enString = aesEncode(src);


        // 解密  
       // String DeString = aesDncode(enString);

    }
}

继续在dao包中添加dao类和daosupport类,用来封装对数据库增删改查的操作

dao:

package com.test.dao;



/**
 * @author wyf
 * 
 */
public interface DAO {
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object save(String str, Object obj) throws Exception;
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object update(String str, Object obj) throws Exception;
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object delete(String str, Object obj) throws Exception;

	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object findForObject(String str, Object obj) throws Exception;

	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object findForList(String str, Object obj) throws Exception;
	
	/**
	 * 
	 * @param s
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object findForMap(String sql, Object obj, String key , String value) throws Exception;
	
}

DaoSupport类：

package com.test.dao;

import java.util.List;

import javax.annotation.Resource;

import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.stereotype.Repository;


/**
 * @author wyf
 * 
 */
@Repository("daoSupport")
public class DaoSupport implements DAO {

	@Resource(name = "sqlSessionTemplate")
	private SqlSessionTemplate sqlSessionTemplate;
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object save(String str, Object obj) throws Exception {
		return sqlSessionTemplate.insert(str, obj);
	}
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	@SuppressWarnings("rawtypes")
    public Object batchSave(String str, List objs )throws Exception{
		return sqlSessionTemplate.insert(str, objs);
	}
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object update(String str, Object obj) throws Exception {
		return sqlSessionTemplate.update(str, obj);
	}

	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	@SuppressWarnings("rawtypes")
    public void batchUpdate(String str, List objs )throws Exception{
		SqlSessionFactory sqlSessionFactory = sqlSessionTemplate.getSqlSessionFactory();
		SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH,false);
		try{
			if(objs!=null){
				for(int i=0,size=objs.size();i<size;i++){
					sqlSession.update(str, objs.get(i));
				}
				sqlSession.flushStatements();
				sqlSession.commit();
				sqlSession.clearCache();
			}
		}finally{
			sqlSession.close();
		}
	}
	
	/**
	 *
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	@SuppressWarnings("rawtypes")
    public Object batchDelete(String str, List objs )throws Exception{
		return sqlSessionTemplate.delete(str, objs);
	}
	
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object delete(String str, Object obj) throws Exception {
		return sqlSessionTemplate.delete(str, obj);
	}
	 
	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object findForObject(String str, Object obj) throws Exception {
		String sql = sqlSessionTemplate.getConfiguration().getMappedStatement(str).getBoundSql(obj).getSql();
		sql+=sql;
		return sqlSessionTemplate.selectOne(str, obj);
	}

	/**
	 * 
	 * @param str
	 * @param obj
	 * @return
	 * @throws Exception
	 */
	public Object findForList(String str, Object obj) throws Exception {
		return sqlSessionTemplate.selectList(str, obj);
	}
	
	public Object findForMap(String str, Object obj, String key, String value) throws Exception {
		return sqlSessionTemplate.selectMap(str, obj, key);
	}
	
}

添加完截图:

加完dao之后，在resource下建文件夹mybatis，并添加mybatis-config.xml

mybatis-config.xml的代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN"  
	"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	
	<settings> 
        <setting name="cacheEnabled" value="false" /><!-- 全局映射器启用缓存 -->   
     </settings>
</configuration>

3.我们在web.xml中加载这个ApplicationContext.xml

 <param-name>contextConfigLocation</param-name>    
            <param-value>classpath:spring/ApplicationContext-mvc.xml,classpath*:spring/ApplicationContext.xml</param-value>    

web.xml中全部配置如下

<?xml version="1.0" encoding="UTF-8"?>  
<web-app 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"  
    version="2.5">  
    <!-- 区分项目名称，防止默认重名 -->    
    <context-param>    
        <param-name>test</param-name>    
        <param-value>maven.example.root</param-value>    
    </context-param>    
    
    <!-- Spring的log4j监听器 -->    
    <listener>    
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>    
    </listener>    
    
    <!-- 字符集 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>    
        <init-param>    
            <param-name>forceEncoding</param-name>    
            <param-value>true</param-value>    
        </init-param>    
    </filter>    
    <filter-mapping>    
        <filter-name>CharacterEncodingFilter</filter-name>    
        <url-pattern>/*</url-pattern>    
    </filter-mapping>    
    
    <!-- Spring view分发器 -->    
    <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:spring/ApplicationContext-mvc.xml,classpath*:spring/ApplicationContext.xml</param-value>    
        </init-param>    
        <load-on-startup>1</load-on-startup>    
    </servlet>    
    <servlet-mapping>    
        <servlet-name>springMvc</servlet-name>    
        <url-pattern>*.do</url-pattern>    
    </servlet-mapping>    
  
</web-app>  

四、以上步骤基本完成，这里需要注意的是，我连的数据库是oracle,需要添加ojdbc.jar包进行数据库连接，因为我们maven库里没有该jar包，

这里直接在WEN-INF下建lib文件夹，直接拿一个jar添加进去，我添加的版本是ojdbc6.jar，记得bulid path一下

五、新建一个查询的业务，需要添加一个service包，里面分别编写接口和实现类，mybatis下也建立一个相对应的mapper文件，
我这里以查询user业务为例子

UserService类：

package com.test.service.user;

import java.util.List;
import java.util.Map;

public interface UserService {
 List<Map<String, Object>> getUserInfo(Map<String, Object> map) throws Exception ;
 }

UserServiceImpl类：

package com.test.service.user.impl;

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

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.test.dao.DaoSupport;
import com.test.service.user.UserService;

@Service
public class UserServiceImpl implements UserService {

	@Resource(name = "daoSupport")
	private DaoSupport dao;
	
	@SuppressWarnings("unchecked")
	@Override
	public List<Map<String, Object>> getUserInfo(Map<String, Object> map) throws Exception {
		return (List<Map<String, Object>>)dao.findForList("UserMapper.selectUser", map);
	}
	

}

mybatis中建立user文件夹，并新建userMapper.xml
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="UserMapper">
    <!-- 通过查询所有user -->
    <select id="selectUser"  parameterType="map"  resultType="map">
       select user_id,username, password,name,rights,last_login,ip,status,role_id from sys_app_user
    </select>
</mapper>

最后修改userController类:

package com.test.controller;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.test.service.user.UserService;


@Controller 
public class TestController {
	@Autowired
	private UserService userService;
	
	
	@RequestMapping(value="index.do")    
    public ModelAndView index_jsp(){    
		ModelAndView mv=new ModelAndView();
		List<Map<String, Object>> mapList=new ArrayList<Map<String,Object>>();
		try {
			Map<String, Object> map=new HashMap<String, Object>();
			mapList=userService.getUserInfo(map);
		} catch (Exception e) {
			e.printStackTrace();
		}
		if(mapList!=null&&mapList.size()>0){
			 mv.addObject("list", mapList);   
		}
		mv.setViewName("index");  
        return mv;  
    }    
}

最后index.jsp页面：

<%@ 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>test</title>      
    </head>      
          
    <body>      
      <c:forEach items="${list}" var="l" >
      		<h2>${l.USER_ID}</h2> <h2>${l.USERNAME}</h2> <h2>${l.NAME}</h2>
      </c:forEach>
    </body>      

最后结果：

在来看看我们的项目结构: