【SpringBoot】springboot+mybatis+generator+transaction整合

项目结构：

pom.xml

<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.2</version>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.mybatis.generator</groupId>
			<artifactId>mybatis-generator-core</artifactId>
			<version>1.3.5</version>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<plugin>
				<groupId>org.mybatis.generator</groupId>
				<artifactId>mybatis-generator-maven-plugin</artifactId>
				<version>1.3.5</version>	
				<configuration>
					<!--允许移动生成的文件 -->
					<verbose>true</verbose>
					<!-- 是否覆盖 -->
					<overwrite>true</overwrite>
					<!-- 自动生成的配置 -->
					<configurationFile>
						src/main/resources/generator/generatorConfig.xml</configurationFile>
				</configuration>
			</plugin>
		</plugins>
	</build>

新建springboot时，选择web、mysql，jdbc、mybatis

application.properties

spring.datasource.url=jdbc:mysql://localhost:3306/shopsystem
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

mybatis.mapper-locations=classpath:mapping/*.xml

当前配置dataSource、mybatis

generatorConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
    <classPathEntry
            location="C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\5.1.21\mysql-connector-java-5.1.21.jar"/>
    <context id="DB2Tables" targetRuntime="MyBatis3">
        <commentGenerator>
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>
        <!--数据库链接地址账号密码-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost/shopsystem"
                        userId="root" password="123456">
        </jdbcConnection>
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>
        <!--生成Model类存放位置-->
        <javaModelGenerator targetPackage="com.wj.model" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>
        <!--生成映射文件存放位置-->
        <sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
            <property name="enableSubPackages" value="true"/>
        </sqlMapGenerator>
        <!--生成Dao类存放位置-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.wj.dao" targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
        </javaClientGenerator>
        <!--生成对应表及类名-->
        <table tableName="ticket_info" domainObjectName="Ticket" enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
    </context>
</generatorConfiguration>

需要注意的地方，我用绿色的字。但xml中生成了两遍，我没有找到原因，启动前，要删掉多余的部分，否则会报错！

代码注释配置

dao层：

@Mapper
public interface TicketMapper {
    int deleteByPrimaryKey(Integer ticketId);

    int insert(Ticket record);

    int insertSelective(Ticket record);
}

impl包中：

类前，加上@Service

启动类处，加上

@MapperScan("com.wj.dao")//扫描的是mapper.xml中namespace指向值的包位置

关于事务，注意两个地方：

impl包中

@Service
@Transactional(propagation = Propagation.REQUIRED,isolation = Isolation.DEFAULT,timeout=36000,rollbackFor=Exception.class)
public class TicketServiceImpl implements TicketService{
   

启动类：

@SpringBootApplication
@EnableTransactionManagement
@MapperScan("com.wj.dao")//扫描的是mapper.xml中namespace指向值的包位置
public class DemoApplication {
	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
}

gitHub地址： https://github.com/InnocenceWj/springboot