Question

我尝试切换到Spring Boot（v2.0.1.RELEASE）和EntityManager。我花了一个星期的时间来处理MySQL数据库回滚异常，但仍然无法弄明白。

@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loggin：

2018-05-25 10：36：46.297 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：绑定值 [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2]用于密钥 [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] 线程[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：检索值 [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2]用于密钥 [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] 绑定线程[http-nio-8080-exec-4] 2018-05-25 10：36：46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：约束值 [org.springframework.jdbc.datasource.ConnectionHolder@5b4dc571] for 密钥[HikariDataSource（HikariPool-1）]来线程[http-nio-8080-exec-4] 2018-05-25 10：36：46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：初始化事务同步2018-05-25 10：36：46.358 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.TransactionInterceptor：获取交易 [c.s.k.service.UserServiceImp.saveUser] 2018-05-25 10：36：46.358 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：检索值 [org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2]用于密钥 [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] 绑定到线程[http-nio-8080-exec-4] Hibernate：插入到用户（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）值（？，？，？，？，？，？，？，？，？，？，？，？，？，？，？，？，？，？，？，'a'）2018-05-25 10： 36：46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.TransactionInterceptor：完成交易 [c.s.k.service.UserServiceImp.saveInvite]之后 exception：c.s.k.service.ServiceException 2018-05-25 10：36：46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.RuleBasedTransactionAttribute：应用规则来确定是否应该回滚事务 c.s.k.service.ServiceException 2018-05-25 10：36：46.457 TRACE 25041 --- [nio-8080-exec-4] o.s.t.i.RuleBasedTransactionAttribute：获胜回滚规则是： RollbackRuleAttribute与模式 [c.s.k.service.ServiceException] 2018-05-25 10：36：46.460 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：清算交易同步2018-05-25 10：36：46.460 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：已删除价值[org.springframework.jdbc.datasource.ConnectionHolder@5b4dc571] 来自线程的密钥[HikariDataSource（HikariPool-1）] [http-nio-8080-exec-4] 2018-05-25 10：36：46.468 TRACE 25041 --- [nio-8080-exec-4] .s.t.s.TransactionSynchronizationManager：已删除值[org.springframework.orm.jpa.EntityManagerHolder@4c6ea9e2] 键 [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean@3dd8ed71] 来自线程[http-nio-8080-exec-4]

我还注意到，如果我将@Transactional for Required更改为强制：

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

我收到以下错误：

org.springframework.transaction.IllegalTransactionStateException：没有为标记为传播的事务找到的现有事务 '强制'

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的建议缩小到基础连接后，我发现Springboot 2.0 @Transaction doesn't get supported by org.hibernate.dialect.MySQL5Dialect。我更改为MySQL5InnoDBDialect并重新创建表，并且回滚按预期工作！

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！

Spring Boot事务回滚

1 个答案: