java - Spring Boot事务回滚

Question

我尝试切换到 Spring Boot (v2.0.1.RELEASE) 和 EntityManager。我花了一周的时间研究MySQL数据库异常回滚，但仍然无法弄清楚。

@Repository
public class HibernateDaoImp implements Dao {
    @PersistenceContext 
    private EntityManager entityManager;

    public <T extends AbstractEntity> T saveOrUpdate(T entity) {
        if(entity.getId() == null || entity.getId().equals(0)) {
            this.entityManager.persist(entity);
            t = entity;
        } else {
            t = (T) this.entityManager.merge(entity);
        }
        return t;
    } 
}

@Service("userService")
public class UserServiceImp implements UserService {
    @Autowired
    protected Dao dao;

    @Override
    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = {ServiceException.class})
    public User saveUser(User user) throws ServiceException {
        user = this.dao.saveOrUpdate(user);
        throw new ServiceException(500, "internal error");
    }
}

用户仍保存在数据库中。这是登录:

2018-05-25 10:36:46.297 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Bound value [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] to thread [http-nio-8080-exec-4] 2018-05-25 10:36:46.356 DEBUG 25041 --- [nio-8080-exec-4] c.s.knected.controller.UserController : save id=null 2018-05-25 10:36:46.357 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] bound to thread [http-nio-8080-exec-4] 2018-05-25 10:36:46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Bound value [org.springframework.jdbc.datasource.ConnectionHolder@5b4dc571] for key [HikariDataSource (HikariPool-1)] to thread [http-nio-8080-exec-4] 2018-05-25 10:36:46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Initializing transaction synchronization 2018-05-25 10:36:46.358 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.TransactionInterceptor : Getting transaction for [c.s.k.service.UserServiceImp.saveUser] 2018-05-25 10:36:46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Retrieved value [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] bound to thread [http-nio-8080-exec-4] Hibernate: insert into user (created_by, time_created, deleted, deleted_by, time_deleted, name, time_updated, updated_by, adress, code, email, password, first_name, lost_login, last_name, mobile, phone, photo_id, time_registered, user_type) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 'a') 2018-05-25 10:36:46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.TransactionInterceptor : Completing transaction for [c.s.k.service.UserServiceImp.saveInvite] after exception: c.s.k.service.ServiceException 2018-05-25 10:36:46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.RuleBasedTransactionAttribute : Applying rules to determine whether transaction should rollback on c.s.k.service.ServiceException 2018-05-25 10:36:46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.RuleBasedTransactionAttribute : Winning rollback rule is: RollbackRuleAttribute with pattern [c.s.k.service.ServiceException] 2018-05-25 10:36:46.460 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Clearing transaction synchronization 2018-05-25 10:36:46.460 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Removed value [org.springframework.jdbc.datasource.ConnectionHolder@5b4dc571] for key [HikariDataSource (HikariPool-1)] from thread [http-nio-8080-exec-4] 2018-05-25 10:36:46.468 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager : Removed value [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2] for key [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] from thread [http-nio-8080-exec-4]

我还注意到，如果我将@Transactional从Required更改为Mandatory:

@Transactional(propagation = Propagation.MANDATORY, rollbackFor = {ServiceException.class})

我收到以下错误:

org.springframework.transaction.IllegalTransactionStateException: No existing transaction found for transaction marked with propagation 'mandatory'

以下是我的 pom:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.1.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-cache</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

任何帮助将不胜感激!

-ZJ

这是我在 application.properties 中的数据源设置:

spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/mytestdb?useSSL=false
spring.datasource.username=abc
spring.datasource.password=abc123

spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.hikari.maximum-pool-size=50
spring.datasource.hikari.idle-timeout=1000
spring.datasource.hikari.pool-name=knected-pool

#spring.datasource.tomcat.max-wait=20000
#spring.datasource.tomcat.max-active=50
#spring.datasource.tomcat.max-idle=20
#spring.datasource.tomcat.min-idle=15

spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
spring.jpa.properties.hibernate.id.new_generator_mappings = false

Answer 1

根据@Kayaman的建议缩小到底层连接后，我发现Springboot 2.0 @Transaction doesn't get supported by org.hibernate.dialect.MySQL5Dialect 。我更改为 MySQL5InnoDBDialect 并重新创建了表，回滚按预期工作!

我应该首先发布我的数据源配置。

非常感谢@Kayaman 和@Sundararaj Govindasamy 的帮助!