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);

     } 

 }

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