Mybatis与Spring整合（CURD）

项目采用Maven构建，用Junit进行测试，数据库是Mysql，连接池是c3p0，未测试缓存部分

1、Maven的“pom.xml”文件

 <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.</modelVersion>
     <groupId>com.mcs</groupId>
     <artifactId>mybatis04</artifactId>
     <version>0.0.-SNAPSHOT</version>

     <properties>
         <!-- Generic properties -->
         <java.version>1.8</java.version>
         <project.build.sourceEncoding>UTF-</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-</project.reporting.outputEncoding>
         <!-- Custom properties -->
         <mybatis.version>3.3.</mybatis.version>
     </properties>

     <dependencies>
         <!-- junit -->
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <scope>test</scope>
         </dependency>
         <!-- log4j -->
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
         </dependency>
         <!-- 数据库连接驱动 -->
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
         </dependency>
         <!-- c3p0 -->
         <dependency>
             <groupId>com.mchange</groupId>
             <artifactId>c3p0</artifactId>
         </dependency>

         <!-- spring -->
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-context-support</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-orm</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-tx</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-aspects</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-messaging</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-test</artifactId>
         </dependency>

         <!-- apache commons -->
         <dependency>
             <groupId>commons-logging</groupId>
             <artifactId>commons-logging</artifactId>
         </dependency>

         <!-- mybatis -->
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
             <version>${mybatis.version}</version>
         </dependency>
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis-spring</artifactId>
             <version>1.2.</version>
         </dependency>

     </dependencies>

     <dependencyManagement>
         <dependencies>
             <dependency>
                 <groupId>io.spring.platform</groupId>
                 <artifactId>platform-bom</artifactId>
                 <version>2.0..RELEASE</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>
         </dependencies>
     </dependencyManagement>

     <build>
         <finalName>Mybatis</finalName>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.19</version>
                 <configuration>
                     <!-- Maven 跳过运行 Test 代码的配置 -->
                     <skipTests>true</skipTests>
                 </configuration>
             </plugin>
         </plugins>
     </build>
 </project>

2、配置文件

2.1、db.properties　　

 jdbc.driverClass = com.mysql.jdbc.Driver
 jdbc.jdbcUrl = jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8
 jdbc.user = root
 jdbc.password = root

 c3p0.initialPoolSize =
 c3p0.maxPoolSize = 

2.2、spring-core.xml　　

 <?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/beans http://www.springframework.org/schema/beans/spring-beans.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

     <!-- 配置自动扫描的包 -->
     <context:component-scan base-package="com.mcs">
         <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
         <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice" />
     </context:component-scan>

 </beans>

2.3、spring-mybatis.xml

 <?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" xmlns:mybatis-spring="http://mybatis.org/schema/mybatis-spring" xsi:schemaLocation="http://mybatis.org/schema/mybatis-spring http://mybatis.org/schema/mybatis-spring-1.2.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-4.2.xsd
         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd">

     <!-- 加载数据库配置文件 -->
     <context:property-placeholder location="classpath:db.properties"/>

     <!-- 、配置数据源 -->
     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
         <property name="user" value="${jdbc.user}"></property>
         <property name="password" value="${jdbc.password}"></property>
         <property name="driverClass" value="${jdbc.driverClass}"></property>
         <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>

         <property name="initialPoolSize" value="${c3p0.initialPoolSize}"></property>
         <property name="maxPoolSize" value="${c3p0.maxPoolSize}"></property>
     </bean>

     <!-- 、配置sqlSessionFactory -->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <!-- 加载数据源 -->
         <property name="dataSource" ref="dataSource"></property>
         <!-- 加载MyBatis配置文件 -->
         <property name="configLocation" value="classpath:mybatis.xml"></property>
     </bean>

     <!-- 、配置Mapper文件自动扫描 -->
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <property name="basePackage" value="com.mcs.dao" ></property>
         <property name="sqlSessionFactoryBeanName"  value="sqlSessionFactory"></property>
     </bean>

     <!-- 、配置事务管理器 -->
     <!-- MyBatis默认使用Spring JDBC的事务管理器 -->
     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"></property>
     </bean>

     <!-- 、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="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="init" propagation="REQUIRED" />
             <tx:method name="delAndInit" propagation="REQUIRED" />

             <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
             <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
             <tx:method name="load*" propagation="SUPPORTS" read-only="true" />
             <tx:method name="search*" propagation="SUPPORTS" read-only="true" />
             <tx:method name="datagrid*" propagation="SUPPORTS" read-only="true" />

             <tx:method name="*" propagation="REQUIRED" />
         </tx:attributes>
     </tx:advice>
     <aop:config>
         <aop:pointcut id="transactionPointcut" expression="execution(* com.mcs.service..*Impl.*(..))" />
         <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" />
     </aop:config>

 </beans>

2.4、mybatis.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>        

     <!-- 全局的参数配置，如开启二级缓存等 -->
     <settings>
         <!-- 配置延迟加载,按需加载对象属性 -->
         <setting name="lazyLoadingEnabled" value="true"/>
         <setting name="aggressiveLazyLoading" value="false"/>
     </settings>

     <!-- 使用别名 -->
     <typeAliases>
         <!-- 为包下的所有文件设置别名，别名为类名，不分大小写 -->
         <package name="com.mcs.entity"/>
     </typeAliases>

 </configuration>

2.5、log4j.xml

 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
 <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
     <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
         <layout class="org.apache.log4j.PatternLayout">
             <param name="ConversionPattern"
                 value="%-5p %d{MM-dd HH:mm:ss,SSS} %m  (%F:%L) \n" />
         </layout>
     </appender>
     <logger name="java.sql">
         <level value="debug" />
     </logger>
     <logger name="org.apache.ibatis">
         <level value="debug" />
     </logger>
     <root>
         <level value="debug" />
         <appender-ref ref="STDOUT" />
     </root>
 </log4j:configuration>

3、数据库实体类

 package com.mcs.entity;

 import java.io.Serializable;

 public class Department implements Serializable {

     private static final long serialVersionUID = 6706877732712610561L;

     private Integer id;

     private String name;

     private String telephone;

     private Integer managerId;

     private Integer parentId;

     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 String getTelephone() {
         return telephone;
     }

     public void setTelephone(String telephone) {
         this.telephone = telephone == null ? null : telephone.trim();
     }

     public Integer getManagerId() {
         return managerId;
     }

     public void setManagerId(Integer managerId) {
         this.managerId = managerId;
     }

     public Integer getParentId() {
         return parentId;
     }

     public void setParentId(Integer parentId) {
         this.parentId = parentId;
     }

     @Override
     public String toString() {
         return "Department [id=" + id + ", name=" + name + ", telephone=" + telephone + ", managerId=" + managerId
                 + ", parentId=" + parentId + "]";
     }

 }

4、Mapper.xml文件与对应的接口

4.1、DepartmentMapper.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="com.mcs.dao.DepartmentMapper">

     <resultMap id="departmentResultMap" type="Department">
         <id column="id" property="id" jdbcType="INTEGER" />
         <result column="name" property="name" jdbcType="VARCHAR" />
         <result column="telephone" property="telephone" jdbcType="VARCHAR" />
         <result column="manager_id" property="managerId" jdbcType="INTEGER" />
         <result column="parent_id" property="parentId" jdbcType="INTEGER" />
     </resultMap>

     <sql id="Base_Column_List">
         id, name, telephone, manager_id, parent_id
     </sql>

     <select id="findById" parameterType="Integer" resultMap ="departmentResultMap">
         select * from t_department where id = #{id}
     </select>

     <select id="findAll" resultMap="departmentResultMap">
         select * from t_department
     </select>

     <select id="findDetails" parameterType="Integer" resultMap="departmentResultMap">
         select * from t_department where parent_id = #{value}
     </select>

     <insert id="add" parameterType="com.mcs.entity.Department">
         <!-- 将Insert插入的数据的主键返回到User对象中，只限Mysql的自增长的Key -->
         <selectKey keyProperty="id" order="AFTER" resultType="int">
             SELECT LAST_INSERT_ID()
         </selectKey>

         insert into t_department
             (name, telephone, manager_id, parent_id)
         values
             (#{name}, #{telephone}, #{managerId}, #{parentId})
     </insert>

     <!--
     新增获取自增Key的另外一种方式
     <insert id="add"  keyColumn="id" keyProperty="id" useGeneratedKeys="true"  parameterType="com.mcs.entity.Department">
         insert into t_department
             (name, telephone, manager_id, parent_id)
         values
             (#{name}, #{telephone}, #{managerId}, #{parentId})
     </insert>
      -->

     <update id="updateById" parameterType="com.mcs.entity.Department">
         update t_department
         set name = #{name},
         telephone = #{telephone},
         manager_id = #{managerId},
         parent_id = #{parentId}
         where id = #{id}
     </update>

     <delete id="deleteById" parameterType="Integer">
         delete from t_department where id = #{id}
     </delete>

 </mapper>

4.2、DepartmentMapper.java

 package com.mcs.dao;

 import java.util.List;

 import com.mcs.entity.Department;

 public interface DepartmentMapper {

     public void add(Department department) throws Exception;

     public void updateById(Department department) throws Exception;

     public void deleteById(Integer id) throws Exception;

     public Department findById(Integer id) throws Exception;

     public List<Department> findAll() throws Exception;

     public List<Department> findDetails(Integer parentId) throws Exception;

 }

5、Service层代码

5.1、DepartmentService.java

 package com.mcs.service;

 import java.util.List;

 import com.mcs.entity.Department;

 public interface DepartmentService {
     public Department add(Department department) throws Exception;

     public void updateById(Integer id, Department department) throws Exception;

     public void deleteById(Integer id) throws Exception;

     public Department findById(Integer id) throws Exception;

     public List<Department> findAll() throws Exception;

     public List<Department> findDetails(Integer parentId) throws Exception;

 }

5.2、DepartmentServiceImpl.java

 package com.mcs.service.impl;

 import java.util.ArrayList;
 import java.util.List;

 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;

 import com.mcs.dao.DepartmentMapper;
 import com.mcs.entity.Department;
 import com.mcs.service.DepartmentService;

 @Service("departmentService")
 public class DepartmentServiceImpl implements DepartmentService {

     @Autowired
     private DepartmentMapper departmentMapper;

     public Department add(Department department) throws Exception {
         departmentMapper.add(department);
         return department;
     }

     public void updateById(Integer id, Department department) throws Exception {
         Department d = departmentMapper.findById(id);
         BeanUtils.copyProperties(department, d);
         departmentMapper.updateById(d);
     }

     public void deleteById(Integer id) throws Exception {
         departmentMapper.deleteById(id);
     }

     public Department findById(Integer id) throws Exception {
         return departmentMapper.findById(id);
     }

     public List<Department> findAll() throws Exception {
         List<Department> departments = new ArrayList<Department>();
         departments = departmentMapper.findAll();
         return departments;
     }

     public List<Department> findDetails(Integer parentId) throws Exception {
         List<Department> departments = new ArrayList<Department>();
         departments = departmentMapper.findDetails(parentId);
         return departments;
     }

 }

6、测试代码TestDepartmentService.java

 package com.mcs.test;

 import java.util.List;

 import org.apache.log4j.Logger;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

 import com.mcs.entity.Department;
 import com.mcs.service.DepartmentService;

 @RunWith(SpringJUnit4ClassRunner.class)
 @ContextConfiguration(locations = { "classpath:spring-core.xml", "classpath:spring-mybatis.xml" })
 public class TestDepartmentService {
     /**
      * Logger for this class
      */
     private static final Logger logger = Logger.getLogger(TestDepartmentService.class);

     @Autowired
     private DepartmentService departmentService;

     @Test
     public void test() throws Exception {

     }

     @Test
     public void testFindById() throws Exception {
         Department department = departmentService.findById();
         logger.debug(department);
     }

     @Test
     public void testAdd() throws Exception {
         Department department = new Department();
         department.setName("行政部");
         department.setTelephone("021-86868686");
         department.setParentId();

         department = departmentService.add(department);
         logger.debug(department);
     }

     @Test
     public void testUpdateById() throws Exception {
         Department department = departmentService.findById();

         department.setTelephone("010-66668888");

         departmentService.updateById(, department);
         logger.debug("部门更新成功！");
     }

     @Test
     public void testDeleteById() throws Exception {
         departmentService.deleteById();
     } 

     @Test
     public void testFindAll() throws Exception {
         List<Department> departments = departmentService.findAll();

         logger.debug(departments);
     } 

     @Test
     public void testFindDetails() throws Exception {
         List<Department> departments = departmentService.findDetails();

         logger.debug(departments);
     } 

 }