我使用1.2.0版本的spring-boot-starter-data-jpa创建了一个Spring Boot应用程序,并且我正在使用MySQL。我已经在application.properties文件中正确配置了我的MySQL属性。
我有一个简单的JPA实体、Spring Data JPA仓库和服务如下所示:
@Entity
class Person
{
@Id @GeneratedValue(strategy=GenerationType.AUTO)
private Integer id;
private String name;
//setters & getters
}
@Repository
public interface PersonRepository extends JpaRepository<Person, Integer>{
}
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
@Service
@Transactional
class PersonService
{
@Autowired PersonRepository personRepository;
@Transactional
void save(List<Person> persons){
for (Person person : persons) {
if("xxx".equals(person.getName())){
throw new RuntimeException("boooom!!!");
}
personRepository.save(person);
}
}
}
我有以下的JUnit测试:
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = Application.class)
public class ApplicationTests {
@Autowired
PersonService personService;
@Test
public void test_logging() {
List<Person> persons = new ArrayList<Person>();
persons.add(new Person(null,"abcd"));
persons.add(new Person(null,"xyz"));
persons.add(new Person(null,"xxx"));
persons.add(new Person(null,"pqr"));
personService.save(persons);
}
}
期望不向“PERSON”表中插入记录,因为在插入第三个人对象时会抛出异常。但是事务没有回滚,前两个记录已被插入并提交。
然后我想用JPA EntityManager快速尝试一下。@PersistenceContext
private EntityManager em;
em.save(person);
然后我遇到了javax.persistence.TransactionRequiredException: No transactional EntityManager available 异常。
在谷歌上搜索一段时间后,我遇到了与此相同主题的 JIRA 线程 https://jira.spring.io/browse/SPR-11923。
然后我将 Spring Boot 版本更新为1.1.2,以获取比4.0.6旧的 Spring 版本。
然后 em.save(person) 如预期工作,事务也正常工作(意味着在发生 RuntimeException 时回滚所有的 db 插入)。
但是,即使使用 Spring Data JPA 1.6.0 版本中的 personRepository.save(person) 替换 em.persist(person),在 Spring 4.0.5 + Spring Data JPA 版本下事务仍然不起作用。
看来 Spring Data JPA 存储库正在提交事务。
我漏掉了什么?如何使 Service 层的 @Transactional 注释起作用?
PS:
Maven pom.xml
<?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.sivalabs</groupId>
<artifactId>springboot-data-jpa</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot-data-jpa</name>
<description>Spring Boot Hello World</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.0.RELEASE</version>
<relativePath />
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<start-class>com.sivalabs.springboot.Application</start-class>
<java.version>1.7</java.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</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-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
</dependencies>
</project>
Application.java
@EnableAutoConfiguration
@Configuration
@ComponentScan
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
PersonService
类和你调用的方法都改为public
。 - M. Deinum