mvn archetype:create -DgroupId=me.gacl -DartifactId=spring4-mybatis3 -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 3   <modelVersion>4.0.0</modelVersion> 4   <groupId>me.gacl</groupId> 5   <artifactId>spring4-mybatis3</artifactId> 6   <packaging>war</packaging> 7   <version>1.0-SNAPSHOT</version> 8   <name>spring4-mybatis3 Maven Webapp</name> 9   <url>http://maven.apache.org</url>10   <dependencies>11     <dependency>12       <groupId>junit</groupId>13       <artifactId>junit</artifactId>14       <version>3.8.1</version>15       <scope>test</scope>16     </dependency>17   </dependencies>18   <build>19     <finalName>spring4-mybatis3</finalName>20   </build>21 </project>

1 <dependency>2       <groupId>junit</groupId>3       <artifactId>junit</artifactId>4       <version>3.8.1</version>5       <scope>test</scope>6 </dependency>

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 3   <modelVersion>4.0.0</modelVersion> 4   <groupId>me.gacl</groupId> 5   <artifactId>spring4-mybatis3</artifactId> 6   <packaging>war</packaging> 7   <version>1.0-SNAPSHOT</version> 8   <name>spring4-mybatis3</name> 9   <url>http://maven.apache.org</url>10   <dependencies>11     12   </dependencies>13   <build>14     <finalName>spring4-mybatis3</finalName>15   </build>16 </project>

Create DATABASE spring4_mybatis3;USE spring4_mybatis3;DROP TABLE IF EXISTS t_user;CREATE TABLE t_user (  user_id char(32) NOT NULL,  user_name varchar(30) DEFAULT NULL,  user_birthday date DEFAULT NULL,  user_salary double DEFAULT NULL,  PRIMARY KEY (user_id)) ENGINE=InnoDB DEFAULT CHARSET=utf8;

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> 3 <generatorConfiguration> 4     <!-- 数据库驱动包位置 --> 5     <classPathEntry location="E:\repository\mysql\mysql-connector-java\5.1.34\mysql-connector-java-5.1.34.jar" />  6     <!-- <classPathEntry location="C:\oracle\product\10.2.0\db_1\jdbc\lib\ojdbc14.jar" />--> 7     <context id="DB2Tables" targetRuntime="MyBatis3"> 8         <commentGenerator> 9             <property name="suppressAllComments" value="http://www.mamicode.com/true" />10         </commentGenerator>11         <!-- 数据库链接URL、用户名、密码 -->12          <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/spring4_mybatis3" userId="root" password="XDP"> 13         <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost:1521:orcl" userId="msa" password="msa">-->14         </jdbcConnection>15         <javaTypeResolver>16             <property name="forceBigDecimals" value="http://www.mamicode.com/false" />17         </javaTypeResolver>18         <!-- 生成实体类的包名和位置，这里配置将生成的实体类放在me.gacl.domain这个包下 -->19         <javaModelGenerator targetPackage="me.gacl.domain" targetProject="C:\Users\gacl\spring4-mybatis3\src\main\java">20             <property name="enableSubPackages" value="http://www.mamicode.com/true" />21             <property name="trimStrings" value="http://www.mamicode.com/true" />22         </javaModelGenerator>23         <!-- 生成的SQL映射文件包名和位置，这里配置将生成的SQL映射文件放在me.gacl.mapping这个包下 -->24         <sqlMapGenerator targetPackage="me.gacl.mapping" targetProject="C:\Users\gacl\spring4-mybatis3\src\main\java">25             <property name="enableSubPackages" value="http://www.mamicode.com/true" />26         </sqlMapGenerator>27         <!-- 生成DAO的包名和位置，这里配置将生成的dao类放在me.gacl.dao这个包下 -->28         <javaClientGenerator type="XMLMAPPER" targetPackage="me.gacl.dao" targetProject="C:\Users\gacl\spring4-mybatis3\src\main\java">29             <property name="enableSubPackages" value="http://www.mamicode.com/true" />30         </javaClientGenerator>31         <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->32         <table tableName="t_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />33     </context>34 </generatorConfiguration>

java -jar mybatis-generator-core-1.3.2.jar -configfile generator.xml -overwrite

 1 package me.gacl.dao; 2  3 import me.gacl.domain.User; 4  5 public interface UserMapper { 6     int deleteByPrimaryKey(String userId); 7  8     int insert(User record); 9 10     int insertSelective(User record);11 12     User selectByPrimaryKey(String userId);13 14     int updateByPrimaryKeySelective(User record);15 16     int updateByPrimaryKey(User record);17 }

 1 package me.gacl.domain; 2  3 import java.util.Date; 4  5 public class User { 6     private String userId; 7  8     private String userName; 9 10     private Date userBirthday;11 12     private Double userSalary;13 14     public String getUserId() {15         return userId;16     }17 18     public void setUserId(String userId) {19         this.userId = userId == null ? null : userId.trim();20     }21 22     public String getUserName() {23         return userName;24     }25 26     public void setUserName(String userName) {27         this.userName = userName == null ? null : userName.trim();28     }29 30     public Date getUserBirthday() {31         return userBirthday;32     }33 34     public void setUserBirthday(Date userBirthday) {35         this.userBirthday = userBirthday;36     }37 38     public Double getUserSalary() {39         return userSalary;40     }41 42     public void setUserSalary(Double userSalary) {43         this.userSalary = userSalary;44     }45 }

 1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > 3 <mapper namespace="me.gacl.dao.UserMapper" > 4   <resultMap id="BaseResultMap" type="me.gacl.domain.User" > 5     <id column="user_id" property="userId" jdbcType="CHAR" /> 6     <result column="user_name" property="userName" jdbcType="VARCHAR" /> 7     <result column="user_birthday" property="userBirthday" jdbcType="DATE" /> 8     <result column="user_salary" property="userSalary" jdbcType="DOUBLE" /> 9   </resultMap>10   <sql id="Base_Column_List" >11     user_id, user_name, user_birthday, user_salary12   </sql>13   <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" >14     select 15     <include refid="Base_Column_List" />16     from t_user17     where user_id = #{userId,jdbcType=CHAR}18   </select>19   <delete id="deleteByPrimaryKey" parameterType="java.lang.String" >20     delete from t_user21     where user_id = #{userId,jdbcType=CHAR}22   </delete>23   <insert id="insert" parameterType="me.gacl.domain.User" >24     insert into t_user (user_id, user_name, user_birthday, 25       user_salary)26     values (#{userId,jdbcType=CHAR}, #{userName,jdbcType=VARCHAR}, #{userBirthday,jdbcType=DATE}, 27       #{userSalary,jdbcType=DOUBLE})28   </insert>29   <insert id="insertSelective" parameterType="me.gacl.domain.User" >30     insert into t_user31     <trim prefix="(" suffix=")" suffixOverrides="," >32       <if test="userId != null" >33         user_id,34       </if>35       <if test="userName != null" >36         user_name,37       </if>38       <if test="userBirthday != null" >39         user_birthday,40       </if>41       <if test="userSalary != null" >42         user_salary,43       </if>44     </trim>45     <trim prefix="values (" suffix=")" suffixOverrides="," >46       <if test="userId != null" >47         #{userId,jdbcType=CHAR},48       </if>49       <if test="userName != null" >50         #{userName,jdbcType=VARCHAR},51       </if>52       <if test="userBirthday != null" >53         #{userBirthday,jdbcType=DATE},54       </if>55       <if test="userSalary != null" >56         #{userSalary,jdbcType=DOUBLE},57       </if>58     </trim>59   </insert>60   <update id="updateByPrimaryKeySelective" parameterType="me.gacl.domain.User" >61     update t_user62     <set >63       <if test="userName != null" >64         user_name = #{userName,jdbcType=VARCHAR},65       </if>66       <if test="userBirthday != null" >67         user_birthday = #{userBirthday,jdbcType=DATE},68       </if>69       <if test="userSalary != null" >70         user_salary = #{userSalary,jdbcType=DOUBLE},71       </if>72     </set>73     where user_id = #{userId,jdbcType=CHAR}74   </update>75   <update id="updateByPrimaryKey" parameterType="me.gacl.domain.User" >76     update t_user77     set user_name = #{userName,jdbcType=VARCHAR},78       user_birthday = #{userBirthday,jdbcType=DATE},79       user_salary = #{userSalary,jdbcType=DOUBLE}80     where user_id = #{userId,jdbcType=CHAR}81   </update>82 </mapper>

<dependency>    <groupId>org.springframework</groupId>    <artifactId>spring-core</artifactId>    <version>4.1.4.RELEASE</version></dependency>

<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>me.gacl</groupId>    <artifactId>spring4-mybatis3</artifactId>    <packaging>war</packaging>    <version>1.0-SNAPSHOT</version>    <name>spring4-mybatis3</name>    <url>http://maven.apache.org</url>    <dependencies>        <!-- 添加Spring4.1.4的核心包 -->        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-core</artifactId>            <version>4.1.4.RELEASE</version>        </dependency>    </dependencies>    <build>        <finalName>spring4-mybatis3</finalName>    </build></project>

  1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  2     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  3     <modelVersion>4.0.0</modelVersion>  4     <groupId>me.gacl</groupId>  5     <artifactId>spring4-mybatis3</artifactId>  6     <packaging>war</packaging>  7     <version>1.0-SNAPSHOT</version>  8     <name>spring4-mybatis3</name>  9     <url>http://maven.apache.org</url> 10     <dependencies> 11         <!-- 添加Spring-core包 --> 12         <dependency> 13             <groupId>org.springframework</groupId> 14             <artifactId>spring-core</artifactId> 15             <version>4.1.4.RELEASE</version> 16         </dependency> 17         <!-- 添加spring-context包 --> 18         <dependency> 19             <groupId>org.springframework</groupId> 20             <artifactId>spring-context</artifactId> 21             <version>4.1.4.RELEASE</version> 22         </dependency> 23         <!-- 添加spring-tx包 --> 24         <dependency> 25             <groupId>org.springframework</groupId> 26             <artifactId>spring-tx</artifactId> 27             <version>4.1.4.RELEASE</version> 28         </dependency> 29         <!-- 添加spring-jdbc包 --> 30         <dependency> 31             <groupId>org.springframework</groupId> 32             <artifactId>spring-jdbc</artifactId> 33             <version>4.1.4.RELEASE</version> 34         </dependency> 35         <!-- 为了方便进行单元测试，添加spring-test包 --> 36         <dependency> 37             <groupId>org.springframework</groupId> 38             <artifactId>spring-test</artifactId> 39             <version>4.1.4.RELEASE</version> 40         </dependency> 41         <!--添加spring-web包 --> 42         <dependency> 43             <groupId>org.springframework</groupId> 44             <artifactId>spring-web</artifactId> 45             <version>4.1.4.RELEASE</version> 46         </dependency> 47         <!--添加aspectjweaver包 --> 48         <dependency> 49             <groupId>org.aspectj</groupId> 50             <artifactId>aspectjweaver</artifactId> 51             <version>1.8.5</version> 52         </dependency> 53         <!-- 添加mybatis的核心包 --> 54         <dependency> 55             <groupId>org.mybatis</groupId> 56             <artifactId>mybatis</artifactId> 57             <version>3.2.8</version> 58         </dependency> 59         <!-- 添加mybatis与Spring整合的核心包 --> 60         <dependency> 61             <groupId>org.mybatis</groupId> 62             <artifactId>mybatis-spring</artifactId> 63             <version>1.2.2</version> 64         </dependency> 65         <!-- 添加servlet3.0核心包 --> 66         <dependency> 67             <groupId>javax.servlet</groupId> 68             <artifactId>javax.servlet-api</artifactId> 69             <version>3.0.1</version> 70         </dependency> 71         <dependency> 72             <groupId>javax.servlet.jsp</groupId> 73             <artifactId>javax.servlet.jsp-api</artifactId> 74             <version>2.3.2-b01</version> 75         </dependency> 76         <!-- jstl --> 77         <dependency> 78             <groupId>javax.servlet</groupId> 79             <artifactId>jstl</artifactId> 80             <version>1.2</version> 81         </dependency> 82         <!-- 添加mysql驱动包 --> 83         <dependency> 84             <groupId>mysql</groupId> 85             <artifactId>mysql-connector-java</artifactId> 86             <version>5.1.34</version> 87         </dependency> 88         <!-- 添加druid连接池包 --> 89         <dependency> 90             <groupId>com.alibaba</groupId> 91             <artifactId>druid</artifactId> 92             <version>1.0.12</version> 93         </dependency> 94         <!-- 添加junit单元测试包 --> 95         <dependency> 96             <groupId>junit</groupId> 97             <artifactId>junit</artifactId> 98             <version>4.12</version> 99             <scope>test</scope>100         </dependency>101     </dependencies>102     <build>103         <finalName>spring4-mybatis3</finalName>104     </build>105 </project>

driverClassName=com.mysql.jdbc.DrivervalidationQuery=SELECT 1jdbc_url=jdbc:mysql://localhost:3306/spring4_mybatis3?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNulljdbc_username=rootjdbc_password=XDP

<?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"    xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.0.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsd">    <!-- 引入dbconfig.properties属性文件 -->    <context:property-placeholder location="classpath:dbconfig.properties" />    <!-- 自动扫描(自动注入)，扫描me.gacl.service这个包以及它的子包的所有使用@Service注解标注的类 -->    <context:component-scan base-package="me.gacl.service" /></beans>

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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.xsdhttp://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">    <!-- JNDI方式配置数据源 -->    <!-- <bean id="dataSource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="http://www.mamicode.com/${jndiName}"></property> </bean> -->    <!-- ========================================配置数据源========================================= -->    <!-- 配置数据源，使用的是alibaba的Druid(德鲁伊)数据源 -->    <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">        <property name="url" value="http://www.mamicode.com/${jdbc_url}" />        <property name="username" value="http://www.mamicode.com/${jdbc_username}" />        <property name="password" value="http://www.mamicode.com/${jdbc_password}" />        <!-- 初始化连接大小 -->        <property name="initialSize" value="http://www.mamicode.com/0" />        <!-- 连接池最大使用连接数量 -->        <property name="maxActive" value="http://www.mamicode.com/20" />        <!-- 连接池最大空闲 -->        <property name="maxIdle" value="http://www.mamicode.com/20" />        <!-- 连接池最小空闲 -->        <property name="minIdle" value="http://www.mamicode.com/0" />        <!-- 获取连接最大等待时间 -->        <property name="maxWait" value="http://www.mamicode.com/60000" />        <!--         <property name="poolPreparedStatements" value="http://www.mamicode.com/true" />         <property name="maxPoolPreparedStatementPerConnectionSize" value="http://www.mamicode.com/33" />         -->        <property name="validationQuery" value="http://www.mamicode.com/${validationQuery}" />        <property name="testOnBorrow" value="http://www.mamicode.com/false" />        <property name="testOnReturn" value="http://www.mamicode.com/false" />        <property name="testWhileIdle" value="http://www.mamicode.com/true" />        <!-- 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="http://www.mamicode.com/60000" />        <!-- 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="http://www.mamicode.com/25200000" />        <!-- 打开removeAbandoned功能 -->        <property name="removeAbandoned" value="http://www.mamicode.com/true" />        <!-- 1800秒，也就是30分钟 -->        <property name="removeAbandonedTimeout" value="http://www.mamicode.com/1800" />        <!-- 关闭abanded连接时输出错误日志 -->        <property name="logAbandoned" value="http://www.mamicode.com/true" />        <!-- 监控数据库 -->        <!-- <property name="filters" value="http://www.mamicode.com/stat" /> -->        <property name="filters" value="http://www.mamicode.com/mergeStat" />    </bean>        <!-- ========================================分隔线========================================= -->        <!-- ========================================针对myBatis的配置项============================== -->    <!-- 配置sqlSessionFactory -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">        <!-- 实例化sqlSessionFactory时需要使用上述配置好的数据源以及SQL映射文件 -->        <property name="dataSource" ref="dataSource" />        <!-- 自动扫描me/gacl/mapping/目录下的所有SQL映射的xml文件, 省掉Configuration.xml里的手工配置        value="http://www.mamicode.com/classpath:me/gacl/mapping/*.xml"指的是classpath(类路径)下me.gacl.mapping包中的所有xml文件        UserMapper.xml位于me.gacl.mapping包下，这样UserMapper.xml就可以被自动扫描         -->        <property name="mapperLocations" value="http://www.mamicode.com/classpath:me/gacl/mapping/*.xml" />    </bean>    <!-- 配置扫描器 -->    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <!-- 扫描me.gacl.dao这个包以及它的子包下的所有映射接口类 -->        <property name="basePackage" value="http://www.mamicode.com/me.gacl.dao" />        <property name="sqlSessionFactoryBeanName" value="http://www.mamicode.com/sqlSessionFactory" />    </bean>        <!-- ========================================分隔线========================================= -->    <!-- 配置Spring的事务管理器 -->    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource" />    </bean>    <!-- 注解方式配置事物 -->    <!-- <tx:annotation-driven transaction-manager="transactionManager" /> -->    <!-- 拦截器方式配置事物 -->    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">        <tx:attributes>            <tx:method name="add*" propagation="REQUIRED" />            <tx:method name="append*" propagation="REQUIRED" />            <tx:method name="insert*" propagation="REQUIRED" />            <tx:method name="save*" propagation="REQUIRED" />            <tx:method name="update*" propagation="REQUIRED" />            <tx:method name="modify*" propagation="REQUIRED" />            <tx:method name="edit*" propagation="REQUIRED" />            <tx:method name="delete*" propagation="REQUIRED" />            <tx:method name="remove*" propagation="REQUIRED" />            <tx:method name="repair" propagation="REQUIRED" />            <tx:method name="delAndRepair" propagation="REQUIRED" />            <tx:method name="get*" propagation="SUPPORTS" />            <tx:method name="find*" propagation="SUPPORTS" />            <tx:method name="load*" propagation="SUPPORTS" />            <tx:method name="search*" propagation="SUPPORTS" />            <tx:method name="datagrid*" propagation="SUPPORTS" />            <tx:method name="*" propagation="SUPPORTS" />        </tx:attributes>    </tx:advice>    <aop:config>        <aop:pointcut id="transactionPointcut" expression="execution(* me.gacl.service..*Impl.*(..))" />        <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />    </aop:config>    <!-- 配置druid监控spring jdbc -->    <bean id="druid-stat-interceptor" class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor">    </bean>    <bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut" scope="prototype">        <property name="patterns">            <list>                <value>me.gacl.service.*</value>            </list>        </property>    </bean>    <aop:config>        <aop:advisor advice-ref="druid-stat-interceptor" pointcut-ref="druid-stat-pointcut" />    </aop:config></beans>

 1 package me.gacl.service; 2  3 import me.gacl.domain.User; 4  5 public interface UserServiceI { 6  7     /** 8      * 添加用户 9      * @param user10      */11     void addUser(User user);12     13     /**14      * 根据用户id获取用户15      * @param userId16      * @return17      */18     User getUserById(String userId);19 }

 1 package me.gacl.service.impl; 2  3 import org.springframework.beans.factory.annotation.Autowired; 4 import org.springframework.stereotype.Service; 5 import me.gacl.dao.UserMapper; 6 import me.gacl.domain.User; 7 import me.gacl.service.UserServiceI; 8  9 /**10  * @author gacl11  * 使用@Service注解将UserServiceImpl类标注为一个service12  * service的id是userService13  */14 @Service("userService")15 public class UserServiceImpl implements UserServiceI {16 17     /**18      * 使用@Autowired注解标注userMapper变量，19      * 当需要使用UserMapper时，Spring就会自动注入UserMapper20      */21     @Autowired22     private UserMapper userMapper;//注入dao23 24     @Override25     public void addUser(User user) {26         userMapper.insert(user);27     }28 29     @Override30     public User getUserById(String userId) {31         return userMapper.selectByPrimaryKey(userId);32     }33 }

 1 package me.gacl.test; 2  3 import java.util.Date; 4 import java.util.UUID; 5 import me.gacl.domain.User; 6 import me.gacl.service.UserServiceI; 7 //import me.gacl.service.UserServiceI; 8 import org.junit.Before; 9 import org.junit.Test;10 import org.springframework.context.ApplicationContext;11 import org.springframework.context.support.ClassPathXmlApplicationContext;12 13 public class MyBatisTest {14 15     private UserServiceI userService;16     17     /**18      * 这个before方法在所有的测试方法之前执行，并且只执行一次19      * 所有做Junit单元测试时一些初始化工作可以在这个方法里面进行20      * 比如在before方法里面初始化ApplicationContext和userService21      */22     @Before23     public void before(){24         //使用"spring.xml"和"spring-mybatis.xml"这两个配置文件创建Spring上下文25         ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});26         //从Spring容器中根据bean的id取出我们要使用的userService对象27         userService = (UserServiceI) ac.getBean("userService");28     }29     30     @Test31     public void testAddUser(){32         //ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"spring.xml","spring-mybatis.xml"});33         //UserServiceI userService = (UserServiceI) ac.getBean("userService");34         User user = new User();35         user.setUserId(UUID.randomUUID().toString().replaceAll("-", ""));36         user.setUserName("白虎神皇xdp");37         user.setUserBirthday(new Date());38         user.setUserSalary(10000D);39         userService.addUser(user);40     }41     42 }

 1 package me.gacl.test; 2  3 import java.util.Date; 4 import java.util.UUID; 5 import me.gacl.domain.User; 6 import me.gacl.service.UserServiceI; 7 import org.junit.Test; 8 import org.junit.runner.RunWith; 9 import org.springframework.beans.factory.annotation.Autowired;10 import org.springframework.test.context.ContextConfiguration;11 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;12 13 @RunWith(SpringJUnit4ClassRunner.class)14 //配置了@ContextConfiguration注解并使用该注解的locations属性指明spring和配置文件之后，15 @ContextConfiguration(locations = {"classpath:spring.xml", "classpath:spring-mybatis.xml" })16 public class MyBatisTestBySpringTestFramework {17 18     //注入userService19     @Autowired20     private UserServiceI userService;21     22     @Test23     public void testAddUser(){24         User user = new User();25         user.setUserId(UUID.randomUUID().toString().replaceAll("-", ""));26         user.setUserName("xdp_gacl_白虎神皇");27         user.setUserBirthday(new Date());28         user.setUserSalary(10000D);29         userService.addUser(user);30     }31     32     @Test33     public void testGetUserById(){34         String userId = "fb1c5941094e400b975f10d9a9d602a3";35         User user = userService.getUserById(userId);36         System.out.println(user.getUserName());37     }38 }

<?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_3_0.xsd"    version="3.0">    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list>    <listener>        <description>Spring监听器</description>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <!-- ContextLoaderListener初始化Spring上下文时需要使用到的contextConfigLocation参数 -->    <context-param>        <param-name>contextConfigLocation</param-name>        <!-- 配置spring.xml和spring-mybatis.xml这两个配置文件的位置，固定写法 -->        <param-value>classpath:spring.xml,classpath:spring-mybatis.xml</param-value>    </context-param></web-app>

 1 package me.gacl.dao; 2  3 import java.util.List; 4  5 import me.gacl.domain.User; 6  7 public interface UserMapper { 8     int deleteByPrimaryKey(String userId); 9 10     int insert(User record);11 12     int insertSelective(User record);13 14     User selectByPrimaryKey(String userId);15 16     int updateByPrimaryKeySelective(User record);17 18     int updateByPrimaryKey(User record);19     20     /**获取所有用户信息21      * @return List<User>22      */23     List<User> getAllUser();24 }

<?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="me.gacl.dao.UserMapper" >  <resultMap id="BaseResultMap" type="me.gacl.domain.User" >    <id column="user_id" property="userId" jdbcType="CHAR" />    <result column="user_name" property="userName" jdbcType="VARCHAR" />    <result column="user_birthday" property="userBirthday" jdbcType="DATE" />    <result column="user_salary" property="userSalary" jdbcType="DOUBLE" />  </resultMap>  <sql id="Base_Column_List" >    user_id, user_name, user_birthday, user_salary  </sql>  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.String" >    select     <include refid="Base_Column_List" />    from t_user    where user_id = #{userId,jdbcType=CHAR}  </select>  <delete id="deleteByPrimaryKey" parameterType="java.lang.String" >    delete from t_user    where user_id = #{userId,jdbcType=CHAR}  </delete>  <insert id="insert" parameterType="me.gacl.domain.User" >    insert into t_user (user_id, user_name, user_birthday,       user_salary)    values (#{userId,jdbcType=CHAR}, #{userName,jdbcType=VARCHAR}, #{userBirthday,jdbcType=DATE},       #{userSalary,jdbcType=DOUBLE})  </insert>  <insert id="insertSelective" parameterType="me.gacl.domain.User" >    insert into t_user    <trim prefix="(" suffix=")" suffixOverrides="," >      <if test="userId != null" >        user_id,      </if>      <if test="userName != null" >        user_name,      </if>      <if test="userBirthday != null" >        user_birthday,      </if>      <if test="userSalary != null" >        user_salary,      </if>    </trim>    <trim prefix="values (" suffix=")" suffixOverrides="," >      <if test="userId != null" >        #{userId,jdbcType=CHAR},      </if>      <if test="userName != null" >        #{userName,jdbcType=VARCHAR},      </if>      <if test="userBirthday != null" >        #{userBirthday,jdbcType=DATE},      </if>      <if test="userSalary != null" >        #{userSalary,jdbcType=DOUBLE},      </if>    </trim>  </insert>  <update id="updateByPrimaryKeySelective" parameterType="me.gacl.domain.User" >    update t_user    <set >      <if test="userName != null" >        user_name = #{userName,jdbcType=VARCHAR},      </if>      <if test="userBirthday != null" >        user_birthday = #{userBirthday,jdbcType=DATE},      </if>      <if test="userSalary != null" >        user_salary = #{userSalary,jdbcType=DOUBLE},      </if>    </set>    where user_id = #{userId,jdbcType=CHAR}  </update>  <update id="updateByPrimaryKey" parameterType="me.gacl.domain.User" >    update t_user    set user_name = #{userName,jdbcType=VARCHAR},      user_birthday = #{userBirthday,jdbcType=DATE},      user_salary = #{userSalary,jdbcType=DOUBLE}    where user_id = #{userId,jdbcType=CHAR}  </update>    <!-- ==============以下内容是根据自身业务扩展的内容======================= -->      <!-- select标签的id属性与UserMapper接口中定义的getAllUser方法要一模一样 -->    <select id="getAllUser" resultMap="BaseResultMap">        select user_id, user_name, user_birthday, user_salary from t_user    </select></mapper>

 1 package me.gacl.service; 2  3 import java.util.List; 4  5 import me.gacl.domain.User; 6  7 public interface UserServiceI { 8  9     /**10      * 添加用户11      * @param user12      */13     void addUser(User user);14     15     /**16      * 根据用户id获取用户17      * @param userId18      * @return19      */20     User getUserById(String userId);21     22     /**获取所有用户信息23      * @return List<User>24      */25     List<User> getAllUser();26 }

 1 package me.gacl.service.impl; 2  3 import java.util.List; 4  5 import org.springframework.beans.factory.annotation.Autowired; 6 import org.springframework.stereotype.Service; 7 import me.gacl.dao.UserMapper; 8 import me.gacl.domain.User; 9 import me.gacl.service.UserServiceI;10 11 /**12  * @author gacl13  * 使用@Service注解将UserServiceImpl类标注为一个service14  * service的id是userService15  */16 @Service("userService")17 public class UserServiceImpl implements UserServiceI {18 19     /**20      * 使用@Autowired注解标注userMapper变量，21      * 当需要使用UserMapper时，Spring就会自动注入UserMapper22      */23     @Autowired24     private UserMapper userMapper;//注入dao25 26     @Override27     public void addUser(User user) {28         userMapper.insert(user);29     }30 31     @Override32     public User getUserById(String userId) {33         return userMapper.selectByPrimaryKey(userId);34     }35 36     @Override37     public List<User> getAllUser() {38         return userMapper.getAllUser();39     }40 }

 1 package me.gacl.web.controller; 2  3 import java.io.IOException; 4 import java.util.List; 5  6 import javax.servlet.ServletException; 7 import javax.servlet.annotation.WebServlet; 8 import javax.servlet.http.HttpServlet; 9 import javax.servlet.http.HttpServletRequest;10 import javax.servlet.http.HttpServletResponse;11 12 import org.springframework.context.ApplicationContext;13 import org.springframework.web.context.support.WebApplicationContextUtils;14 15 import me.gacl.domain.User;16 import me.gacl.service.UserServiceI;17 18 /**19  * @author gacl20  * @WebServlet是Servlet3.0提供的注解，目的是将一个继承了HttpServlet类的普通java类标注为一个Servlet21  * UserServlet使用了@WebServlet标注之后，就不需要在web.xml中配置了22  */23 @WebServlet("/UserServlet")24 public class UserServlet extends HttpServlet {25 26     //处理业务逻辑的userService27     private UserServiceI userService;28     29     public void doGet(HttpServletRequest request, HttpServletResponse response)30             throws ServletException, IOException {31         //获取所有的用户信息32         List<User> lstUsers = userService.getAllUser();33         request.setAttribute("lstUsers", lstUsers);34         request.getRequestDispatcher("/index.jsp").forward(request, response);35     }36     37     public void doPost(HttpServletRequest request, HttpServletResponse response)38             throws ServletException, IOException {39         this.doGet(request, response);40     }41 42     public void init() throws ServletException {43         //在Servlet初始化时获取Spring上下文对象(ApplicationContext)44         ApplicationContext ac = WebApplicationContextUtils.getWebApplicationContext(this.getServletContext());45         //从ApplicationContext中获取userService46         userService = (UserServiceI) ac.getBean("userService");47     }48 }

<%@ page language="java" pageEncoding="UTF-8"%><%--引入JSTL核心标签库 --%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!DOCTYPE html><html>    <head>        <title>显示用户信息</title>        <style type="text/css">            table,td{                border: 1px solid;                border-collapse: collapse;            }        </style>    </head>    <body>        <table>            <tr>                <td>用户ID</td>                <td>用户名</td>                <td>用户生日</td>                <td>工资</td>            </tr>            <%--遍历lstUsers集合中的User对象 --%>            <c:forEach var="user" items="${lstUsers}">                <tr>                    <td>${user.userId}</td>                    <td>${user.userName}</td>                    <td>${user.userBirthday}</td>                    <td>${user.userSalary}</td>                </tr>            </c:forEach>        </table>    </body></html>