spring、mybatis、事务项目整合，附完整代码和数据库文件

程序员文章站 2022-03-20 15:49:32

配置依赖项 pom.xml

配置依赖项

pom.xml

<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>my_ms</groupid>
    <artifactid>my_ms</artifactid>
    <version>0.0.1-snapshot</version>
    <!-- 持久层依赖：mysql驱动、dbcp连接池、mybatis、mybatis和spring整合依赖、spring依赖 -->
    <dependencies>
        <!-- spring ioc组件需要的依赖包 -->
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-beans</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-core</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-context</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-expression</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <!-- 基于aspectj的aop依赖包 -->
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-aspects</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <dependency>
            <groupid>aopalliance</groupid>
            <artifactid>aopalliance</artifactid>
            <version>1.0</version>
        </dependency>
        <!-- spring 事务管理和jdbc依赖包 -->
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-tx</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-jdbc</artifactid>
            <version>5.2.1.release</version>
        </dependency>
        <!-- spring 单元测试组件包 -->
        <dependency>
            <groupid>org.springframework</groupid>
            <artifactid>spring-test</artifactid>
            <version>5.2.1.release</version>
            <scope>test</scope>
        </dependency>
        <!-- 单元测试junit -->
        <dependency>
            <groupid>junit</groupid>
            <artifactid>junit</artifactid>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <!-- mysql驱动 -->
        <dependency>
            <groupid>mysql</groupid>
            <artifactid>mysql-connector-java</artifactid>
            <version>8.0.18</version>
        </dependency>
        <!-- dbcp连接池依赖包 -->
        <dependency>
            <groupid>commons-dbcp</groupid>
            <artifactid>commons-dbcp</artifactid>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupid>javax.annotation</groupid>
            <artifactid>javax.annotation-api</artifactid>
            <version>1.3.1</version>
        </dependency>
        <!-- mybatis依赖 -->
        <dependency>
            <groupid>org.mybatis</groupid>
            <artifactid>mybatis</artifactid>
            <version>3.5.3</version>
        </dependency>
        <!-- mybatis-spring整合依赖 -->
        <dependency>
            <groupid>org.mybatis</groupid>
            <artifactid>mybatis-spring</artifactid>
            <version>2.0.3</version>
        </dependency>
    </dependencies>
    <!-- 业务层依赖：aop相关依赖 -->
    <build>
        <plugins>
            <!-- 配置maven的jdk编译级别 -->
            <plugin>
                <groupid>org.apache.maven.plugins</groupid>
                <artifactid>maven-compiler-plugin</artifactid>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>utf-8</encoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

创建配置文件

applicationcontext-dao.xml(持久层)

路径：src/main/resources/spring/applicationcontext-dao.xml

方式一(不推荐)

<?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:tx="http://www.springframework.org/schema/tx"
    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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 配置数据源 -->
    <bean id="datasource"
        class="org.apache.commons.dbcp.basicdatasource" destroy-method="close">
        <property name="driverclassname"
            value="com.mysql.cj.jdbc.driver"></property>
        <property name="url"
            value="jdbc:mysql://localhost:3306/demo?useunicode=true&amp;characterencoding=utf-8&amp;servertimezone=asia/shanghai"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    <!-- 配置sqlsessionfactory -->
    <bean id="sqlsessionfactory"
        class="org.mybatis.spring.sqlsessionfactorybean">
        <!-- 注入datasource -->
        <property name="datasource" ref="datasource"></property>
        <!-- mybatis批量别名配置 -->
        <property name="typealiasespackage" value="com.cyb.ms.po"></property>
        <!-- 注入mybatis的全局配置文件路径(该部分可以被省略) -->
        <!-- <property name="configlocation" value="mybatis/sqlmapconfig.xml"></property> -->
    </bean>
    <!-- 相当于配置之前的accountdao持久层bean -->
    <!-- 配置mapper代理对象方式一： mapperfactorybean -->
    <!-- 通过mapperfactorybean生成的代理对象，一次只能针对一个接口进行生成 -->
    <!-- 注意事项：mapper接口类和mapper映射文件同包同名 -->
    <bean id="accountmapper"
        class="org.mybatis.spring.mapper.mapperfactorybean">
        <!-- 注入sqlsessionfactory -->
        <property name="sqlsessionfactory" ref="sqlsessionfactory"></property>
        <!-- 注入目标接口类 -->
        <property name="mapperinterface"
            value="com.cyb.ms.mapper.accountmapper"></property>
    </bean>
</beans>

方式二(推荐)

<?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:tx="http://www.springframework.org/schema/tx"
    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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 配置数据源 -->
    <bean id="datasource"
        class="org.apache.commons.dbcp.basicdatasource" destroy-method="close">
        <property name="driverclassname"
            value="com.mysql.cj.jdbc.driver"></property>
        <property name="url"
            value="jdbc:mysql://localhost:3306/demo?useunicode=true&amp;characterencoding=utf-8&amp;servertimezone=asia/shanghai"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>
    <!-- 配置sqlsessionfactory -->
    <bean id="sqlsessionfactory"
        class="org.mybatis.spring.sqlsessionfactorybean">
        <!-- 注入datasource -->
        <property name="datasource" ref="datasource"></property>
        <!-- mybatis批量别名配置 -->
        <property name="typealiasespackage" value="com.cyb.ms.po"></property>
        <!-- 注入mybatis的全局配置文件路径(该部分可以被省略) -->
        <!-- <property name="configlocation" value="mybatis/sqlmapconfig.xml"></property> -->
    </bean>
    <!-- 配置mapper代理对象方式二：mapperscannerconfigurer -->
    <!-- 批量代理对象的生成 -->
    <bean class="org.mybatis.spring.mapper.mapperscannerconfigurer">
        <!-- 指定需要生成代理的接口所在的包名 -->
        <property name="basepackage" value="com.cyb.ms.mapper"></property>
        <!-- 注意事项：不要配置sqlsessionfactory -->
        <!-- <property name="sqlsessionfactory" ref=""></property> -->
    </bean>
</beans>

applicationcontext-service.xml(业务层)

路径：src/main/resources/spring/applicationcontext-service.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:tx="http://www.springframework.org/schema/tx"
    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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 扫描业务bean -->
    <context:component-scan
        base-package="com.cyb.ms.service"></context:component-scan>
</beans>

applicationcontext-tx.xml(事务)

路径:src/main/resources/spring/applicationcontext-tx.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:tx="http://www.springframework.org/schema/tx"
    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.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!-- 配置平台事务管理器 -->
    <bean id="transactionmanager"
        class="org.springframework.jdbc.datasource.datasourcetransactionmanager">
        <property name="datasource" ref="datasource"></property>
    </bean>
    <!-- 事务通知 -->
    <!-- tx:advice:对应的处理器类是transactioninterceptor类(实现了methodinterceptor) -->
    <!-- transactioninterceptor类实现事务是通过transaction-manager属性指定的值进行事务管理 -->
    <tx:advice id="txadvice"
        transaction-manager="transactionmanager">
        <!-- 设置事务管理信息 -->
        <tx:attributes>
            <!-- 增删改使用required事务传播行为 -->
            <!-- 查询使用read-only -->
            <tx:method name="transfer*" propagation="required"
                isolation="default" />
        </tx:attributes>
    </tx:advice>
    <!-- 基于aspectj+xml方式实现声明式事务 -->
    <aop:config>
        <!-- aop:advisor标签使用的是传统spring aop开发方式实现的 -->
        <!-- spring已经实现了该增强功能，spring使用的是实现methodinterceptor接口的方式实现的 -->
        <aop:advisor advice-ref="txadvice"
            pointcut="execution(* *..*.*serviceimpl.*(..))" />
    </aop:config>
</beans>

数据层

创建包：com.cyb.ms.mapper

accountmapper.java

package com.cyb.ms.mapper;

import org.apache.ibatis.annotations.param;

public interface accountmapper {
    void update(@param("name") string name, @param("money") int money);

    int querymoney(string name);
}

accountmapper.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.cyb.ms.mapper.accountmapper">
    <!-- 查询 -->
    <select id="querymoney" parametertype="string" resulttype="int">
        select money from s_account where name = #{name}
    </select>
    <!-- 修改 -->
    <update id="update" parametertype="map">
        update s_account set money=#{money} where name = #{name}
    </update>
</mapper>

业务层

创建包：com.cyb.ms.service

accountservice.java

package com.cyb.ms.service;

public interface accountservice {
    void transfer(string from, string to, int money);
}

accountserviceimpl.java

package com.cyb.ms.service;

import javax.annotation.resource;
import org.springframework.stereotype.service;
import com.cyb.ms.mapper.accountmapper;

@service
public class accountserviceimpl implements accountservice {
    @resource
    private accountmapper mapper;

    @override
    public void transfer(string from, string to, int money) {
        // 先查询from账户的钱
        int frommoney =  mapper.querymoney(from);
        // 对from账户进行扣钱操作
        mapper.update(from, frommoney - money);
        // 先查询to账户的钱
        int tomoney = mapper.querymoney(to);
        // 对to账户进行加钱操作
        mapper.update(to, tomoney + money);
    }
}

测试类

package com.cyb.ms.service;

import javax.annotation.resource;
import org.junit.test;
import org.junit.runner.runwith;
import org.springframework.test.context.contextconfiguration;
import org.springframework.test.context.junit4.springjunit4classrunner;

@runwith(springjunit4classrunner.class)
@contextconfiguration(locations = { "classpath:spring/applicationcontext-*.xml"})
public class accountservicetest {

    @resource
    private accountservice service;

    @test
    public void testtransfer() {
        service.transfer("老公", "老婆", 1000);
    }
}

项目结构图

spring、mybatis、事务项目整合，附完整代码和数据库文件

表结构

spring、mybatis、事务项目整合，附完整代码和数据库文件

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