Java基础-SSM之Spring和Mybatis整合案例

时间：2022-11-13 16:45:44

　　　　　　　　　　　　　　　　Java基础-SSM之Spring和Mybatis整合案例

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰

版权声明：原创作品，谢绝转载！否则将追究法律责任。

 　　在之前我分享过mybatis和Spring的配置案例，想必大家对它们的配置已经很熟悉了，接下来我们把两者结合起来让他们一起来协同工作，帮我们在数据库中插入数据，编程起来是相当的方便。

一.准备环境

1>.案例分析

　　我们想要把一条数据插入到数据库中，利用Spring和mybatis插件来完成，大致的流程图如下：

Java基础-SSM之Spring和Mybatis整合案例

2>.数据库配置创建测试数据表 

　　在编程之前，我们需要启动数据库，并在数据库中提前创建出我们需要用到的测试表。创建过程如下：

 create database yinzhengjie;

 use yinzhengjie;

 create table if not exists users(id int primary key auto_increment,name varchar(20) , age int) ;

Java基础-SSM之Spring和Mybatis整合案例

二.实操演示

1>.创建新模块，引入Maven依赖

 <?xml version="1.0" encoding="UTF-8"?>

 <project xmlns="http://maven.apache.org/POM/4.0.0"

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

     <modelVersion>4.0.0</modelVersion>

     <groupId>cn.org.yinzhengjie</groupId>

     <artifactId>MySpringMybatis</artifactId>

     <version>1.0-SNAPSHOT</version>

     <dependencies>

         <dependency>

             <groupId>junit</groupId>

             <artifactId>junit</artifactId>

             <version>4.11</version>

         </dependency>

         <dependency>

             <groupId>org.springframework</groupId>

             <artifactId>spring-context-support</artifactId>

             <version>4.3.5.RELEASE</version>

         </dependency>

         <dependency>

             <groupId>org.springframework</groupId>

             <artifactId>spring-jdbc</artifactId>

             <version>4.3.5.RELEASE</version>

         </dependency>

         <dependency>

             <groupId>org.mybatis</groupId>

             <artifactId>mybatis</artifactId>

             <version>3.2.1</version>

         </dependency>

         <dependency>

             <groupId>org.mybatis</groupId>

             <artifactId>mybatis-spring</artifactId>

             <version>1.3.0</version>

         </dependency>

         <dependency>

             <groupId>c3p0</groupId>

             <artifactId>c3p0</artifactId>

             <version>0.9.1.2</version>

         </dependency>

         <dependency>

             <groupId>mysql</groupId>

             <artifactId>mysql-connector-java</artifactId>

             <version>5.1.17</version>

         </dependency>

         <dependency>

             <groupId>org.aspectj</groupId>

             <artifactId>aspectjrt</artifactId>

             <version>1.6.1</version>

         </dependency>

         <dependency>

             <groupId>org.aspectj</groupId>

             <artifactId>aspectjweaver</artifactId>

             <version>1.8.10</version>

         </dependency>

     </dependencies>

 </project>

2>.创建相应的包并编写代码

Java基础-SSM之Spring和Mybatis整合案例

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.dao;

 import java.util.List;

 /**

  * Basedao,基本dao

  */

 public interface BaseDao<T> {

     public void insert(T t) ;

     public void update(T t) ;

     public void delete(Integer id) ;

     public T selectOne(Integer id) ;

     public List<T> selectAll() ;

 }

BaseDao.java 文件内容

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.dao.impl;

 import cn.org.yinzhengjie.sm.dao.BaseDao;

 import cn.org.yinzhengjie.sm.domain.User;

 import org.apache.ibatis.session.SqlSessionFactory;

 import org.mybatis.spring.support.SqlSessionDaoSupport;

 import org.springframework.stereotype.Repository;

 import javax.annotation.Resource;

 import java.util.List;

 /**

  *

  */

 @Repository("userDao")

 public class UserDaoImpl extends SqlSessionDaoSupport implements BaseDao<User> {

     public void insert(User user) {

         getSqlSession().insert("users.insert" , user) ;

     }

     public void update(User user) {

         getSqlSession().update("users.update", user);

     }

     public void delete(Integer id) {

         getSqlSession().delete("users.deleteOne", id);

     }

     public User selectOne(Integer id) {

         return getSqlSession().selectOne("users.selectOne", id);

     }

     public List<User> selectAll() {

         return getSqlSession().selectList("users.selectAll");

     }

     @Resource(name="sqlSessionFactory")

     public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {

         super.setSqlSessionFactory(sqlSessionFactory);

     }

 }

UserDaoImpl.java 文件内容

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.service;

 import java.util.List;

 /**

  * Created by Administrator on 2018/7/12.

  */

 public interface BaseService<T> {

     public void insert(T t);

     public void update(T t);

     public void delete(Integer id);

     public T selectOne(Integer id);

     public List<T> selectAll();

 }

BaseService.java 文件内容

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.service.impl;

 import cn.org.yinzhengjie.sm.dao.BaseDao;

 import cn.org.yinzhengjie.sm.domain.User;

 import cn.org.yinzhengjie.sm.service.BaseService;

 import org.springframework.stereotype.Service;

 import javax.annotation.Resource;

 import java.util.List;

 /**

  * 用户服务实现类

  */

 @Service("userService")

 public class UserServiceImpl implements BaseService<User> {

     @Resource(name="userDao")

     private BaseDao<User> userDao ;

     public void insert(User user) {

         userDao.insert(user);

     }

     public void update(User user) {

         userDao.update(user);

     }

     public void delete(Integer id) {

         userDao.delete(id);

     }

     public User selectOne(Integer id) {

         return userDao.selectOne(id);

     }

     public List<User> selectAll() {

         return userDao.selectAll();

     }

 }

UserServiceImpl.java 文件内容

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.domain;

 /**

  */

 public class User {

     private Integer id;

     private String name;

     private int age;

     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;

     }

     public int getAge() {

         return age;

     }

     public void setAge(int age) {

         this.age = age;

     }

 }

User.java 文件内容

3>.编写mybatis的配置文件

 <?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>

         <typeAlias type="cn.org.yinzhengjie.sm.domain.User"    alias="_User" />

     </typeAliases>

     <mappers>

         <mapper resource="UserMapper.xml"/>

     </mappers>

 </configuration>

mybatis-config.xml 文件内容

 <?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">

 <!-- 定义名字空间 -->

 <mapper namespace="users">

     <insert id="insert">

         insert into users(name, age) values(#{name}, #{age}) ;

     </insert>

     <update id="update">

         update users set name = #{name} , age = #{age} where id = #{id}

     </update>

     <delete id="deleteOne">

         delete from users where id = #{id}

     </delete>

     <select id="selectOne" resultType="_User">

         select * from users where id = #{id}

     </select>

     <select id="selectAll" resultType="_User">

         select * from users

     </select>

 </mapper>

UserMapper.xml 文件内容

4>.编写Spring的配置文件（环绕通知，文件名为：beans.xml）

 <?xml version="1.0"?>

 <beans xmlns="http://www.springframework.org/schema/beans"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

        xmlns:aop="http://www.springframework.org/schema/aop"

        xmlns:context="http://www.springframework.org/schema/context"

        xmlns:tx="http://www.springframework.org/schema/tx"

        xsi:schemaLocation="http://www.springframework.org/schema/beans

                         http://www.springframework.org/schema/beans/spring-beans-4.3.xsd

                         http://www.springframework.org/schema/aop

                         http://www.springframework.org/schema/aop/spring-aop-4.3.xsd

                         http://www.springframework.org/schema/context

                         http://www.springframework.org/schema/context/spring-context-4.3.xsd

                         http://www.springframework.org/schema/tx

                         http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

     <context:component-scan base-package="cn.org.yinzhengjie.sm.service,cn.org.yinzhengjie.sm.dao" />

     <!-- 数据源 -->

     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

         <property name="driverClass" value="com.mysql.jdbc.Driver"/>

         <property name="jdbcUrl" value="jdbc:mysql://localhost:5200/yinzhengjie"/>

         <property name="user" value="root"/>

         <property name="password" value="yinzhengjie"/>

         <property name="maxPoolSize" value="10"/>

         <property name="minPoolSize" value="2"/>

         <property name="initialPoolSize" value="3"/>

         <property name="acquireIncrement" value="2"/>

     </bean>

     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

         <property name="dataSource" ref="dataSource"/>

         <property name="configLocation" value="classpath:mybatis-config.xml"/>

     </bean>

     <!-- 事务管理器，在servie层面上实现事务管理的。 -->

     <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

         <property name="dataSource" ref="dataSource" />

     </bean>

     <!-- 事务通知 -->

     <tx:advice id="txAdvicd" transaction-manager="txManager">

         <tx:attributes>

             <tx:method name="insert*" propagation="REQUIRED" isolation="DEFAULT" />

             <tx:method name="update*" propagation="REQUIRED" isolation="DEFAULT" />

             <tx:method name="delete*" propagation="REQUIRED" isolation="DEFAULT" />

             <tx:method name="select*" propagation="REQUIRED" isolation="DEFAULT" read-only="true" />

             <tx:method name="*" propagation="REQUIRED" isolation="DEFAULT" />

         </tx:attributes>

     </tx:advice>

     <!-- 定义环绕通知 -->

     <aop:config>

         <aop:advisor pointcut="execution(* *..*Service.*(..))" advice-ref="txAdvicd" />

     </aop:config>

 </beans>

5>.新建包名（cn.org.yinzhengjie.sm.main）， 编写测试代码如下：

 /*

 @author :yinzhengjie

 Blog:http://www.cnblogs.com/yinzhengjie/tag/Java%E5%9F%BA%E7%A1%80/

 EMAIL:y1053419035@qq.com

 */

 package cn.org.yinzhengjie.sm.main;

 import cn.org.yinzhengjie.sm.domain.User;

 import cn.org.yinzhengjie.sm.service.BaseService;

 import org.springframework.context.ApplicationContext;

 import org.springframework.context.support.ClassPathXmlApplicationContext;

 public class Demo {

     public static void main(String[] args) {

         ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");

         BaseService service = (BaseService) ac.getBean("userService");

         User user = new User();

         user.setName("YinZhengJie");

         user.setAge(18);

         service.insert(user);

         User yzj = (User)service.selectOne(1);

         System.out.println(yzj.getName());

     }

 }

　　以上代码执行结果如下：

Java基础-SSM之Spring和Mybatis整合案例

6>.运行第5步的测试代码，并查看数据库信息：

Java基础-SSM之Spring和Mybatis整合案例

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