如何在mybatis-spring中使用@Transactional注释？

问题描述

我尝试在 spring 和 mybatis @Transactional 注释$ c>使用 mybatis-spring 依赖项。这是服务层。

I tried to use @Transactional annotation in spring and mybatis using mybatis-spring dependency. This is the service layer.

@Service
public class OracleService {

    @Autowired
    private TestMapper mapper;

    @Autowired
    private PlatformTransactionManager transactionManager;

    @Transactional(propagation = Propagation.REQUIRED,
                   rollbackFor = Exception.class,
                   value = "transactionManager")
    void insert1() {
        TestModel testModel = new TestModel(1, "title1", "content1");
        mapper.insert(testModel);
        throw new RuntimeException();
    }
}

如你所见， RuntimeException 在 insert1（）中被抛出，因此插入操作应该失败。但事实上，它没有。记录已成功插入。为什么？

As you can see, a RuntimeException is thrown out in insert1(), so the insert operation should fail. But in fact, it didn't. The record was inserted successfully. Why?

这是我的主要方法。

public class Launcher {
    public static void main(String[] args) {
        ApplicationContext cxt = new ClassPathXmlApplicationContext("spring-config.xml");
        OracleService oracleService = cxt.getBean(OracleService.class);
        try {
            oracleService.insert1();
        } catch(Exception e) {
            System.out.println("Exception occurred!");
        }
    }
}

弹簧配置。

<?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">


    <context:component-scan base-package="com.database.learn"/>

    <bean id="oracleDataSource" class="oracle.jdbc.pool.OracleDataSource">
        <property name="URL" value="OracleJdbcUrl"/>
        <property name="user" value="user"/>
        <property name="password" value="password"/>
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="oracleDataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="oracleDataSource" />
    </bean>

    <bean id="testMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.database.learn.TestMapper"/>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

我在 pom.xml中使用了以下依赖项

    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.1</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.0</version>
    </dependency>
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0.3</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.3.2.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.3.2.RELEASE</version>
    </dependency>

推荐答案

正如@ M.Deinum提到的那样，我必须要做应用公开 @Transactional 的方法，换句话说，我必须更改

As @M.Deinum metioned, I have to make the method where @Transactional applied public, in other words, I have to change

@Transactional(propagation = Propagation.REQUIRED)
void insert1() {
    TestModel testModel = new TestModel(1, "title1", "content1");
    mapper.insert(testModel);
    throw new RuntimeException();
}

到

@Transactional(propagation = Propagation.REQUIRED)
public void insert1() {
    TestModel testModel = new TestModel(1, "title1", "content1");
    mapper.insert(testModel);
    throw new RuntimeException();
}

原因写在spring文档中。

The reason is written in the spring documentation.

使用代理时，应仅将@Transactional注释应用于方法公众知名度。如果使用@Transactional批注对protected，private或package-visible方法进行批注，则不会引发错误，但带注释的方法不会显示已配置的事务设置。如果需要注释非公共方法，请考虑使用AspectJ（见下文）。

When using proxies, you should apply the @Transactional annotation only to methods with public visibility. If you do annotate protected, private or package-visible methods with the @Transactional annotation, no error is raised, but the annotated method does not exhibit the configured transactional settings. Consider the use of AspectJ (see below) if you need to annotate non-public methods.

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