spring+springmvc+mybatis整合框架搭建

由于例子是基于Maven搭建的，所以首先是pom.xml文件的依赖信息；

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.zte.ems</groupId>
  <artifactId>spring-mybatis-springmvc</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>spring-mybatis-springmvc Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
  <!-- lib version -->
  <!-- base setting -->  
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
        <project.build.locales>zh_CN</project.build.locales>  
        <project.build.jdk>1.7</project.build.jdk>  
  
        <!-- plugin setting -->  
        <mybatis.generator.generatorConfig.xml>${basedir}/src/test/resources/generatorConfig.xml</mybatis.generator.generatorConfig.xml>  
        <mybatis.generator.generatorConfig.properties>file:///${basedir}/src/test/resources/generatorConfig.properties</mybatis.generator.generatorConfig.properties>  
  
        <!-- plugin versions -->  
        <plugin.mybatis.generator>1.3.1</plugin.mybatis.generator>  
        <plugin.maven-compiler>3.1</plugin.maven-compiler>  
  
        <!-- lib versions -->  
        <junit.version>4.11</junit.version>  
        <spring.version>4.0.2.RELEASE</spring.version>  
        <mybatis.version>3.2.2</mybatis.version>  
        <mybatis.spring.version>1.2.2</mybatis.spring.version>  
        <mysql.connector.version>5.0.5</mysql.connector.version>  
        <postgresql.version>9.1-901.jdbc4</postgresql.version>  
        <slf4j.version>1.6.6</slf4j.version>  
        <log4j.version>1.2.12</log4j.version>  
        <httpclient.version>4.1.2</httpclient.version>  
        <jackson.version>1.9.13</jackson.version>  
        <c3p0.version>0.9.1.2</c3p0.version>  
        <druid.version>1.0.5</druid.version>  
        <tomcat.jdbc.version>7.0.53</tomcat.jdbc.version>  
        <jstl.version>1.2</jstl.version>  
        <google.collections.version>1.0</google.collections.version>  
        <cglib.version>3.1</cglib.version>  
        <shiro.version>1.2.3</shiro.version>  
        <commons.fileupload.version>1.3.1</commons.fileupload.version>  
        <commons.codec.version>1.9</commons.codec.version>  
        <commons.net.version>3.3</commons.net.version>  
        <aspectj.version>1.6.12</aspectj.version>  
        <netty.version>4.0.18.Final</netty.version>  
        <hibernate.validator.version>5.1.1.Final</hibernate.validator.version>  
  </properties>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <!--添加spring依赖 -->
    <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-web</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-oxm</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-tx</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-jdbc</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aop</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context-support</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-test</artifactId>  
            <version>${spring.version}</version>  
        </dependency>  
        <!-- aspectJ依赖 -->
           <!-- aspectjweaver -->  
        <dependency>  
            <groupId>org.aspectj</groupId>  
            <artifactId>aspectjweaver</artifactId>  
            <version>${aspectj.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.aspectj</groupId>  
            <artifactId>aspectjrt</artifactId>  
            <version>${aspectj.version}</version>  
        </dependency>  
        <!-- springframe end -->  
    
    <!-- 添加mybatis依赖 -->
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis</artifactId>  
            <version>${mybatis.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.mybatis</groupId>  
            <artifactId>mybatis-spring</artifactId>  
            <version>${mybatis.spring.version}</version>  
        </dependency>  
        
        <dependency>  
            <groupId>org.mybatis.generator</groupId>  
            <artifactId>mybatis-generator-core</artifactId>  
            <version>1.3.2</version>  
            <type>jar</type>  
            <scope>test</scope>  
        </dependency> 
        <!--mybatis end-->  
    
    <!-- 添加springmvc依赖 -->
    
    <!-- 添加jsp、servlet依赖 -->
    <!-- servlet api -->  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>javax.servlet-api</artifactId>  
            <version>3.0.1</version>  
            <scope>provided</scope>  
        </dependency>  
  
        <!-- jstl -->  
        <dependency>  
            <groupId>javax.servlet</groupId>  
            <artifactId>jstl</artifactId>  
            <version>${jstl.version}</version>  
        </dependency>  
    <dependency>
        <groupId>taglibs</groupId>
        <artifactId>standard</artifactId>
        <version>1.1.2</version>
    </dependency>
    
    <!-- 添加mysQL依赖 -->
    <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
       <version>${mysql.connector.version}</version>
  </dependency>
  <!-- 数据源的配置 -->
   <dependency>  
            <groupId>com.alibaba</groupId>  
            <artifactId>druid</artifactId>  
            <version>${druid.version}</version>  
      </dependency>
      <!-- 添加jackson依赖 -->  
        <dependency>  
            <groupId>org.codehaus.jackson</groupId>  
            <artifactId>jackson-mapper-asl</artifactId>  
            <version>${jackson.version}</version>  
        </dependency>  
        <!-- 添加log相关依赖 -->
        <dependency>  
            <groupId>log4j</groupId>  
            <artifactId>log4j</artifactId>  
            <version>${log4j.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.slf4j</groupId>  
            <artifactId>slf4j-api</artifactId>  
            <version>${slf4j.version}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.slf4j</groupId>  
            <artifactId>slf4j-log4j12</artifactId>  
            <version>${slf4j.version}</version>  
        </dependency>  
        <!-- log end --> 
         <!-- cglib -->  
        <dependency>  
            <groupId>cglib</groupId>  
            <artifactId>cglib-nodep</artifactId>  
            <version>${cglib.version}</version>  
        </dependency>  
        
        <!-- start apache -->  
        <dependency>  
            <groupId>commons-fileupload</groupId>  
            <artifactId>commons-fileupload</artifactId>  
            <version>${commons.fileupload.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.apache.httpcomponents</groupId>  
            <artifactId>httpclient</artifactId>  
            <version>${httpclient.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>commons-codec</groupId>  
            <artifactId>commons-codec</artifactId>  
            <version>${commons.codec.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>commons-net</groupId>  
            <artifactId>commons-net</artifactId>  
            <version>${commons.net.version}</version>  
        </dependency>  
  
        <dependency>  
            <groupId>commons-logging</groupId>  
            <artifactId>commons-logging</artifactId>  
            <version>1.1.3</version>  
        </dependency>  
        <dependency>  
            <groupId>commons-collections</groupId>  
            <artifactId>commons-collections</artifactId>  
            <version>3.2.1</version>  
        </dependency>  
  
        <!-- end apache -->  
  </dependencies>

  
  <build>
    <finalName>spring-mybatis-springmvc</finalName>

    <pluginManagement>
        <plugins>
        <!--Maven编译插件 配置-->  
            <plugin>  
                <groupId>org.apache.maven.plugins</groupId>  
                <artifactId>maven-compiler-plugin</artifactId>  
                <version>${plugin.maven-compiler}</version>  
                <configuration>  
                    <source>${project.build.jdk}</source>  
                    <target>${project.build.jdk}</target>  
                    <encoding>${project.build.sourceEncoding}</encoding>  
                </configuration>  
            </plugin>  
        <!-- 配置tomcat插件 -->
            <plugin>
             <groupId>org.apache.tomcat.maven</groupId>
             <artifactId>tomcat7-maven-plugin</artifactId>
              <version>2.2</version>
            
                <configuration>
                    <path>/ssm</path>
                    <port>8080</port>
                    <uriEncoding>UTF-8</uriEncoding>
                    <url>http://localhost:8080/manager/text</url>
                    <server>tomcat7</server>
                </configuration>
            </plugin>
            
              <!-- Mybatis generator代码生成插件 配置 -->  
            <plugin>  
                <groupId>org.mybatis.generator</groupId>  
                <artifactId>mybatis-generator-maven-plugin</artifactId>  
                <version>${plugin.mybatis.generator}</version>  
                <configuration>  
                    <configurationFile>${mybatis.generator.generatorConfig.xml}</configurationFile>  
                    <overwrite>true</overwrite>  
                    <verbose>true</verbose>  
                </configuration>  
            </plugin> 
        </plugins>
    </pluginManagement>
      <!--配置Maven 对resource文件 过滤 -->  
        <resources>  
            <resource>  
                <directory>src/main/resources</directory>  
                <includes>  
                    <include>**/*.properties</include>  
                    <include>**/*.xml</include>  
                </includes>  
                <filtering>true</filtering>  
            </resource>  
            <resource>  
                <directory>src/main/java</directory>  
                <includes>  
                    <include>**/*.properties</include>  
                    <include>**/*.xml</include>  
                </includes>  
                <filtering>true</filtering>  
            </resource>  
        </resources>  
  </build>

</project>

第一步：配置mybatis：mybatis-config.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>  
        <package name="com.zte.ems.model"/>   
    </typeAliases>  
</configuration>

第二步：配置spring相关的三个xml文件

　　（1）spring-dao.xml文件的配置。该文件主要配置了数据库相关的信息，以及spring-mybaits的信息；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" 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:xsi="http://www.w3.org/2001/XMLSchema-instance"
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/aop http://www.springframework.org/schema/aop/spring-aop-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/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
 
<!-- 数据库连接池 -->
<!-- 加载配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 数据库连接池 -->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">

<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="driverClassName" value="${jdbc.driver}" />
<property name="maxActive" value="10" />
<property name="minIdle" value="5" />
</bean>
<!-- 配置sqlsessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="mapperLocations" value="classpath:com/zte/ems/dao/*.xml"></property> 
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置扫描包，加载mapper代理对象 -->
 <!-- 这个配置隐式注册了多个对注解进行解析处理的处理器 -->  
      <context:annotation-config/>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.zte.ems.dao"></property>
 <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
</bean>
</beans>

　　（2）spring-service.xml文件的配置，这个配置文件主要配置了扫描哪些包下的类让Spring容器管理；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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:xsi="http://www.w3.org/2001/XMLSchema-instance"
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/aop http://www.springframework.org/schema/aop/spring-aop-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/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
  <!-- 这个配置隐式注册了多个对注解进行解析处理的处理器 -->  
      <context:annotation-config/>
<!-- 扫描包加载Service实现类 -->
<context:component-scan base-package="com.zte.ems.service"/>
</beans>

　　（3）spring-trans.xml文件的配置，这个文件主要配置了aop切面和事务相关的信息；

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" 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:xsi="http://www.w3.org/2001/XMLSchema-instance"
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/aop http://www.springframework.org/schema/aop/spring-aop-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/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
 
<!-- 事务管理器 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
</bean>
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 切面 -->
<aop:config>
<aop:advisor advice-ref="txAdvice"
pointcut="execution(* com.zte.ems.service.*.*(..))" />
</aop:config>
</beans>

第三步：springmvc-config.xml文件的配置；

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
       xmlns:aop="http://www.springframework.org/schema/aop"  
       xmlns:context="http://www.springframework.org/schema/context"  
       xmlns:mvc="http://www.springframework.org/schema/mvc"  
       xmlns:tx="http://www.springframework.org/schema/tx"  
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
       xmlns:p="http://www.springframework.org/schema/p"  
       xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd  
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd   
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd   
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd   
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">  
      <mvc:annotation-driven/>  
    <!-- 开启controller注解支持 -->
    <!-- use-default-filters="false" 只扫描指定的注解 -->
    <context:component-scan base-package="com.zte.ems.controllers" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>  
  
    <!-- 会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean,是spring MVC为@Controllers分发请求所必须的 -->    
    
  
    <!-- 如果当前请求为“/”时，则转发到“/helloworld/index” -->
    <mvc:view-controller path="/" view-name="forward:/helloworld/index"/> 
    <!-- 静态资源映射 -->
    <mvc:resources mapping="/js/**" location="/WEB-INF/js/" />
    <mvc:resources mapping="/css/**" location="/WEB-INF/css/" />
    <mvc:resources mapping="/fonts/**" location="/WEB-INF/fonts/" />
    <mvc:resources mapping="/plugins/**" location="/WEB-INF/plugins/" />
    <mvc:resources mapping="images/**" location="/WEB-INF/images/" />
    <!-- 当上面要访问的静态资源不包括在上面的配置中时，则根据此配置来访问 -->
    <mvc:default-servlet-handler/>
  
    <!-- 配置视图解析器，并指定视图所在的文件夹  -->
    <bean  id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> 
       <property name="contentType" value="text/html"/>        
       <property name="prefix" value="/WEB-INF/views/"/><!-- WEB-INF/views/ -->
       <property name="suffix" value=".jsp"/>
    </bean>
</beans>  

第四步：web.xml文件的配置，在这个文件中主要配置spring和springmvc；

<?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" 
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="tomcat" version="2.5">

 <display-name>Archetype Created Web Application</display-name>
 <welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
   <!-- 配置spring -->
   <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>  
            classpath:spring-*.xml  
        </param-value>  
    </context-param>  
    <!-- 配置Spring上下文监听器 -->  
    <listener>  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
    </listener>  
    
    <!-- 解决post乱码 -->
<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>
  <!-- 配置springmvc -->
  <servlet>  
        <servlet-name>ssm</servlet-name>  
        <!-- DispatcherServlet:前端控制器,主要就是拦截请求，然后调用对应的Controller和Action -->
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <init-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:springmvc-config.xml</param-value>  
        </init-param>  
        <!-- <load-on-startup>是启动顺序，让这个Servlet随Servletp容器一起启动，必须放在<servlet> 配置的最后。 -->
        <load-on-startup>1</load-on-startup>  
    </servlet>  
   <servlet-mapping>
        <!-- 指定配置的是哪个servlet -->
        <servlet-name>ssm</servlet-name>
        <!-- 指定拦截哪些请求到该servlet，这里配置的是拦截全部请求 -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

第五步：编写代码

1、编写POJO类：

package com.zte.ems.model;

public class Person {
    private Integer id;

    private String name;

    private Integer sex;

    private String email;

    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 == null ? null : name.trim();
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email == null ? null : email.trim();
    }
}

2、使用mybatis逆向工程根据数据库中Person表自动生成PersonMapper.java 和PersonMapper.xml

package com.zte.ems.dao;

import com.zte.ems.model.Person;
import com.zte.ems.model.PersonExample;
import java.util.List;
import org.apache.ibatis.annotations.Param;

public interface PersonMapper {
    int countByExample(PersonExample example);

    int deleteByExample(PersonExample example);

    int deleteByPrimaryKey(Integer id);

    int insert(Person record);

    int insertSelective(Person record);

    List<Person> selectByExample(PersonExample example);

    Person selectByPrimaryKey(Integer id);

    int updateByExampleSelective(@Param("record") Person record, @Param("example") PersonExample example);

    int updateByExample(@Param("record") Person record, @Param("example") PersonExample example);

    int updateByPrimaryKeySelective(Person record);

    int updateByPrimaryKey(Person record);
}

<?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.zte.ems.dao.PersonMapper" >
  <resultMap id="BaseResultMap" type="com.zte.ems.model.Person" >
    <id column="id" property="id" jdbcType="INTEGER" />
    <result column="name" property="name" jdbcType="VARCHAR" />
    <result column="sex" property="sex" jdbcType="INTEGER" />
    <result column="email" property="email" jdbcType="VARCHAR" />
  </resultMap>
  <sql id="Example_Where_Clause" >
    <where >
      <foreach collection="oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Update_By_Example_Where_Clause" >
    <where >
      <foreach collection="example.oredCriteria" item="criteria" separator="or" >
        <if test="criteria.valid" >
          <trim prefix="(" suffix=")" prefixOverrides="and" >
            <foreach collection="criteria.criteria" item="criterion" >
              <choose >
                <when test="criterion.noValue" >
                  and ${criterion.condition}
                </when>
                <when test="criterion.singleValue" >
                  and ${criterion.condition} #{criterion.value}
                </when>
                <when test="criterion.betweenValue" >
                  and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                </when>
                <when test="criterion.listValue" >
                  and ${criterion.condition}
                  <foreach collection="criterion.value" item="listItem" open="(" close=")" separator="," >
                    #{listItem}
                  </foreach>
                </when>
              </choose>
            </foreach>
          </trim>
        </if>
      </foreach>
    </where>
  </sql>
  <sql id="Base_Column_List" >
    id, name, sex, email
  </sql>
  <select id="selectByExample" resultMap="BaseResultMap" parameterType="com.zte.ems.model.PersonExample" >
    select
    <if test="distinct" >
      distinct
    </if>
    <include refid="Base_Column_List" />
    from person
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
    <if test="orderByClause != null" >
      order by ${orderByClause}
    </if>
  </select>
  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >
    select 
    <include refid="Base_Column_List" />
    from person
    where id = #{id,jdbcType=INTEGER}
  </select>
  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >
    delete from person
    where id = #{id,jdbcType=INTEGER}
  </delete>
  <delete id="deleteByExample" parameterType="com.zte.ems.model.PersonExample" >
    delete from person
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </delete>
  <insert id="insert" parameterType="com.zte.ems.model.Person" >
    insert into person (id, name, sex, 
      email)
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{sex,jdbcType=INTEGER}, 
      #{email,jdbcType=VARCHAR})
  </insert>
  <insert id="insertSelective" parameterType="com.zte.ems.model.Person" >
    insert into person
    <trim prefix="(" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        id,
      </if>
      <if test="name != null" >
        name,
      </if>
      <if test="sex != null" >
        sex,
      </if>
      <if test="email != null" >
        email,
      </if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides="," >
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      </if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      </if>
      <if test="sex != null" >
        #{sex,jdbcType=INTEGER},
      </if>
      <if test="email != null" >
        #{email,jdbcType=VARCHAR},
      </if>
    </trim>
  </insert>
  <select id="countByExample" parameterType="com.zte.ems.model.PersonExample" resultType="java.lang.Integer" >
    select count(*) from person
    <if test="_parameter != null" >
      <include refid="Example_Where_Clause" />
    </if>
  </select>
  <update id="updateByExampleSelective" parameterType="map" >
    update person
    <set >
      <if test="record.id != null" >
        id = #{record.id,jdbcType=INTEGER},
      </if>
      <if test="record.name != null" >
        name = #{record.name,jdbcType=VARCHAR},
      </if>
      <if test="record.sex != null" >
        sex = #{record.sex,jdbcType=INTEGER},
      </if>
      <if test="record.email != null" >
        email = #{record.email,jdbcType=VARCHAR},
      </if>
    </set>
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByExample" parameterType="map" >
    update person
    set id = #{record.id,jdbcType=INTEGER},
      name = #{record.name,jdbcType=VARCHAR},
      sex = #{record.sex,jdbcType=INTEGER},
      email = #{record.email,jdbcType=VARCHAR}
    <if test="_parameter != null" >
      <include refid="Update_By_Example_Where_Clause" />
    </if>
  </update>
  <update id="updateByPrimaryKeySelective" parameterType="com.zte.ems.model.Person" >
    update person
    <set >
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      </if>
      <if test="sex != null" >
        sex = #{sex,jdbcType=INTEGER},
      </if>
      <if test="email != null" >
        email = #{email,jdbcType=VARCHAR},
      </if>
    </set>
    where id = #{id,jdbcType=INTEGER}
  </update>
  <update id="updateByPrimaryKey" parameterType="com.zte.ems.model.Person" >
    update person
    set name = #{name,jdbcType=VARCHAR},
      sex = #{sex,jdbcType=INTEGER},
      email = #{email,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  </update>
</mapper>

3、编写Service代码：

package com.zte.ems.service;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.zte.ems.dao.PersonMapper;
import com.zte.ems.model.Person;
import com.zte.ems.model.PersonExample;
import com.zte.ems.model.PersonExample.Criteria;

@Service // 表明这个一个受IOC管理的Service类
public class MyService {
    @Autowired // 自动注入一个类
    private PersonMapper personMapper;
    public Person getPerson(int id) {
        // 添加查询条件
        PersonExample example = new PersonExample();
        Criteria criteria = example.createCriteria();
        criteria.andIdEqualTo(id);
        List<Person> list = personMapper.selectByExample(example);
        if (list != null && list.size() > 0) {
            Person person = list.get(0);
            return person;
        }
        return null;
    }
}

4、编写Controller代码：

package com.zte.ems.controllers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import com.zte.ems.model.Person;
import com.zte.ems.service.MyService;

@Controller // 表明这是一个控制器类
@RequestMapping("/admin")

public class PageController {
    @Autowired
    private MyService myService;
    @Autowired
    private MyMapper myMapper;

    @RequestMapping("/index")
    public String shouIndex() {
        return "success";
    }
    @ResponseBody // @ResponseBody该注解表示以json形式输出
    @RequestMapping("/queryperson/{id}")
    public Person getPerson(@PathVariable int id) {
        Person person = myService.getPerson(id);
        return person;
    }
}

最终的目录结构如下图所示：