1. 实现MyBatis与Spring的整合


图解:

相关依赖,映射文件,MyBatis-config配置文件与Spring配置文件模板会放在附录,需要自取
制作模板:

2. 为业务层添加声明式事务
为了防止代码运行时出现多个方法实现时部分修改成功,部分修改失败导致数据异常,我们可以在业务层添加声明式事务




<!--事务管理器 ,创建事务的-->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--开启事务的注解配置-->
<tx:annotation-driven transaction-manager="txManager"/>
<!--在业务逻辑层添加注解-->
<!--@Transactional //表示当前这个中的所有放都添加事务的功能-->
<!--@Transactional(propagation = Propagation.SUPPORTS,readOnly = true) //用于查询,当前方法为只读,不允许修改数据库 supports:存在事务执行事务,不存在事务则正常运行-->


3. 总结

附录:
相关依赖
<?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>com.zb</groupId>
<artifactId>mavenweb</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>mavenweb Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
<spring.version>4.1.7.RELEASE</spring.version>
</properties>
<dependencies>
<!--maven单元测试-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
<!--mysql数据库连接-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.49</version>
</dependency>
<!--json-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.33</version>
</dependency>
<!--servlet-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.16</version>
</dependency>
<!--日志-->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.6.1</version>
</dependency>
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.30</version>
</dependency>
<!--spring框架-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!--切面-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.7.4</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.7.4</version>
</dependency>
<!--数据库连接-->
<!-- 新增 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version> <!-- 升级到该版本 -->
</dependency>
</dependencies>
<build>
<finalName>mavenweb</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
mybatis-config模板
<?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>
<!--日志格式-->
<settings>
<setting name="logImpl" value="LOG4J"/>
</settings>
<!--加载mybatis的映射文件-->
<mappers>
<mapper resource=""></mapper>
</mappers>
</configuration>
spring-mybatis模板
<?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"
xmlns:tx="http://www.springframework.org/schema/tx"
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">
<!--程序中注解所在的父包 ?packagePath? main/java下的父包-->
<context:component-scan base-package="?packagePath?"/>
<!--数据源,负责创建数据库连接池 ?database?数据库名称 user用户 password密码-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/?database?"/>
<property name="user" value=""/>
<property name="password" value=""/>
</bean>
<!--创建mybatis的连接工厂 ?myBatisConfigPath? MyBatis配置文件路径-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--加载mybatis的主配置文件-->
<property name="configLocation" value="classpath:?MybatisConfigPath?"/>
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--
自动扫描指定包下的Mapper接口,为接口创建实例化对象, 在业务层中通过@Autowired实现对象注入
类型如下功能
xxxMapper = session.getMapper(xxxMapper.class);
?interface? 实现的接口包的路径,如com.zb.mapper
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="?mapperPath?"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!--事务管理器 ,创建事务的-->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--开启事务的注解配置-->
<tx:annotation-driven transaction-manager="txManager"/>
<!--在业务逻辑层添加注解-->
<!--@Transactional //表示当前这个中的所有放都添加事务的功能-->
<!--@Transactional(propagation = Propagation.SUPPORTS,readOnly = true) //当前方法为只读,不允许修改数据库 supports:存在事务执行事务,不存在事务则正常运行-->
</beans>
xxxMapper模板(sql语句)
<?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">
<!--?interface?映射接口-->
<mapper namespace="?interface?">
<!--?class?实体类映射-->
<resultMap id="!example!" type="?class?">
<result property="?entity?" column="?sqlColumn?"/>
</resultMap>
<!--sql查询语句 ?interfaceMethod?对应接口方法-->
<select id="?interfaceMethod?" resultMap="!example!">
select * from XXX
<where>
</where>
</select>
<!--sql添加语句 ?interfaceMethod?对应接口方法 ?type?类型,如整型,对象等-->
<insert id="?interfaceMethod?" parameterType="?type?">
insert into XXX values(?,?,?,?)
</insert>
<!--sql删除语句 ?interfaceMethod?对应接口方法 ?type?类型,如整型,对象等-->
<delete id="?interfaceMethod?" parameterType="?type?">
delete from XXX
<where>
</where>
</delete>
<!--sql修改语句 ?interfaceMethod?对应接口方法 ?type?类型,如整型,对象等-->
<update id="?interfaceMethod?" parameterType="?type?">
update XXX
<set>
</set>
<where>
</where>
</update>
</mapper>