Java 事务注释在 Spring Boot 中不起作用

Transactional annotation not working in Spring Boot

提问by Yurii Buhryn

@Transactional not working in Spring Boot.

@Transactional 在 Spring Boot 中不起作用。

Application.java :

应用程序.java :

@EnableTransactionManagement(proxyTargetClass=true)
@SpringBootApplication(exclude = {ErrorMvcAutoConfiguration.class})
public class Application {

    @Autowired
    private EntityManagerFactory entityManagerFactory;


    public static void main(String[] args) {
        System.out.println("--------------------------- Start Application ---------------------------");
        ApplicationContext ctx = SpringApplication.run(Application.class, args);
    }

    @Bean
    public SessionFactory getSessionFactory() {
        if (entityManagerFactory.unwrap(SessionFactory.class) == null) {
            throw new NullPointerException("factory is not a hibernate factory");
        }
        return entityManagerFactory.unwrap(SessionFactory.class);
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        em.setPackagesToScan(new String[] { "com.buhryn.interviewer.models" });

        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);
        em.setJpaProperties(additionalProperties());

        return em;
    }

    @Bean
    public DataSource dataSource(){
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.postgresql.Driver");
        dataSource.setUrl("jdbc:postgresql://localhost:5432/interviewer");
        dataSource.setUsername("postgres");
        dataSource.setPassword("postgres");
        return dataSource;
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
        HibernateTransactionManager txManager = new HibernateTransactionManager();
        txManager.setSessionFactory(sessionFactory);

        return txManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation(){
        return new PersistenceExceptionTranslationPostProcessor();
    }

    Properties additionalProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
        properties.setProperty("hibernate.show_sql", "false");
        properties.setProperty("hibernate.format_sql", "false");
        properties.setProperty("hibernate.hbm2ddl.auto", "create");
        properties.setProperty("hibernate.current_session_context_class", "org.hibernate.context.internal.ThreadLocalSessionContext");
        return properties;
    }
}

CandidateDao.java

候选人道.java

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

@Repository
public class CandidateDao implements ICandidateDao{

    @Autowired
    SessionFactory sessionFactory;

    protected Session getCurrentSession(){
        return sessionFactory.getCurrentSession();
    }

    @Override
    @Transactional
    public CandidateModel create(CandidateDto candidate) {
        CandidateModel candidateModel = new CandidateModel(candidate.getFirstName(), candidate.getLastName(), candidate.getEmail(), candidate.getPhone());
        getCurrentSession().save(candidateModel);
        return candidateModel;
    }

    @Override
    public CandidateModel show(Long id) {
        return new CandidateModel(
                "new",
                "new",
                "new",
                "new");
    }

    @Override
    public CandidateModel update(Long id, CandidateDto candidate) {
        return new CandidateModel(
                "updated",
                candidate.getLastName(),
                candidate.getEmail(),
                candidate.getPhone());
    }

    @Override
    public void delete(Long id) {

    }
}

Service Class

服务等级

@Service
public class CandidateService implements ICandidateService{

    @Autowired
    ICandidateDao candidateDao;

    @Override
    public CandidateModel create(CandidateDto candidate) {
        return candidateDao.create(candidate);
    }

    @Override
    public CandidateModel show(Long id) {
        return candidateDao.show(id);
    }

    @Override
    public CandidateModel update(Long id, CandidateDto candidate) {
        return candidateDao.update(id, candidate);
    }

    @Override
    public void delete(Long id) {
        candidateDao.delete(id);
    }
}

Controller.class

控制器类

@RestController
@RequestMapping(value = "/api/candidates")
public class CandidateController {

    @Autowired
    ICandidateService candidateService;

    @RequestMapping(value="/{id}", method = RequestMethod.GET)
    public CandidateModel show(@PathVariable("id") Long id) {
        return candidateService.show(id);
    }

    @RequestMapping(method = RequestMethod.POST)
    public CandidateModel create(@Valid @RequestBody CandidateDto candidate, BindingResult result) {
        RequestValidator.validate(result);
        return candidateService.create(candidate);
    }

    @RequestMapping(value="/{id}", method = RequestMethod.PUT)
    public CandidateModel update(@PathVariable("id") Long id, @Valid @RequestBody CandidateDto candidate, BindingResult result) {
        RequestValidator.validate(result);
        return candidateService.update(id, candidate);
    }

    @RequestMapping(value="/{id}", method = RequestMethod.DELETE)
    public void delete(@PathVariable("id") Long id) {
        candidateService.delete(id);
    }
}

When I call create method in DAO system throw exception:

当我在 DAO 系统中调用 create 方法时抛出异常：

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.orm.jpa.JpaSystemException: save is not valid without active transaction; nested exception is org.hibernate.HibernateException: save is not valid without active transaction
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:978)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:291)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:90)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

My Gradlefile :

我的摇篮文件：

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.3.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'spring-boot'

jar {
    baseName = 'interviewer'
    version =  '0.1.0'
}

repositories {
    mavenCentral()
}

sourceCompatibility = 1.8
targetCompatibility = 1.8

dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    compile("org.springframework.boot:spring-boot-starter-actuator")
    compile("org.codehaus.Hymanson:Hymanson-mapper-asl:1.9.13")
    compile("com.google.code.gson:gson:2.3.1")
    compile("org.springframework.data:spring-data-jpa:1.8.0.RELEASE")
    compile("org.hibernate:hibernate-entitymanager:4.3.10.Final")
    compile("postgresql:postgresql:9.1-901-1.jdbc4")
    compile("org.aspectj:aspectjweaver:1.8.6")

    testCompile("org.springframework.boot:spring-boot-starter-test")

}

task wrapper(type: Wrapper) {
    gradleVersion = '2.3'
}

And link to git repository : https://github.com/Yurii-Buhryn/interviewer

并链接到 git 存储库：https: //github.com/Yurii-Buhryn/interviewer

采纳答案by M. Deinum

First you are using Spring Boot then use Spring Boot and let that auto configure things for you. It will configure a datasource, entitymanagerfactory, transaction manager etc.

首先您使用 Spring Boot，然后使用 Spring Boot 并让其自动为您配置内容。它将配置数据源、entitymanagerfactory、事务管理器等。

Next you are using the wrong transaction manager, you are using JPA so you should use the JpaTransactionManagerinstead of the HibernateTransactionManageras that is already configured for you you can simply remove the bean definition for that.

接下来，您使用了错误的事务管理器，您使用的是 JPA，因此您应该使用JpaTransactionManager代替HibernateTransactionManager已经为您配置的，您可以简单地删除 bean 定义。

Second your hibernate.current_session_context_classis messing up proper tx integration remove it.

其次，您hibernate.current_session_context_class搞砸了正确的 tx 集成，将其删除。

Use auto-config

使用自动配置

When you take all this into account you can basically reduce your Applicationclass to the following.

当您考虑到所有这些时，您基本上可以将您的Application课程减少到以下内容。

@SpringBootApplication(exclude = {ErrorMvcAutoConfiguration.class})
@EntityScan("com.buhryn.interviewer.models")
public class Application {

    public static void main(String[] args) {
        System.out.println("--------------------------- Start Application ---------------------------");
        ApplicationContext ctx = SpringApplication.run(Application.class, args);
    }

    @Bean
    public SessionFactory sessionFactory(EntityManagerFactory emf) {
        if (emf.unwrap(SessionFactory.class) == null) {
            throw new NullPointerException("factory is not a hibernate factory");
        }
        return emf.unwrap(SessionFactory.class);
    }
}

Next add an application.propertiesin src/main/resourcescontaining the following.

接着添加application.properties在src/main/resources含有以下内容。

# DataSource configuration
spring.datasource.driver-class-name=org.postgresql.Driver
spring.datasource.username=postgres
spring.datasource.password=postgres
spring.datasource.url=jdbc:postgresql://localhost:5432/interviewer

# General JPA properties
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.show-sql=false

# Hibernate Specific properties
spring.jpa.properties.hibernate.format_sql=false
spring.jpa.hibernate.ddl-auto=create

This will configure the datasource and JPA correctly.

这将正确配置数据源和 JPA。

Use JPA instead of plain Hibernate

使用 JPA 而不是普通的 Hibernate

Another tip instead of using the plain hibernate API simply use JPA that way you could remove the bean for the SessionFactoryas well. Simply change your dao to use an EntityManagerinstead of a SessionFactory.

另一个技巧而不是使用普通的休眠 API，只需使用 JPA，这样您也可以删除 bean SessionFactory。只需将您的 dao 更改为使用 anEntityManager而不是 a SessionFactory。

@Repository
public class CandidateDao implements ICandidateDao{

    @PersistenceContext
    private EntityManager em;

    @Override
    @Transactional
    public CandidateModel create(CandidateDto candidate) {
        CandidateModel candidateModel = new CandidateModel(candidate.getFirstName(), candidate.getLastName(), candidate.getEmail(), candidate.getPhone());
        return em.persist(candidateModel);
    }

    @Override
    public CandidateModel show(Long id) {
        return new CandidateModel(
                "new",
                "new",
                "new",
                "new");
    }

    @Override
    public CandidateModel update(Long id, CandidateDto candidate) {
        return new CandidateModel(
                "updated",
                candidate.getLastName(),
                candidate.getEmail(),
                candidate.getPhone());
    }

    @Override
    public void delete(Long id) {

    }
}

Adding Spring Data JPA

添加 Spring Data JPA

And if you really want to benefit add Spring Data JPA into the mix and remove your DAO completely and leave only an interface. What you have now would be moved to a service class (where it belongs IMHO).

如果您真的想从中受益，请将 Spring Data JPA 添加到组合中并完全删除您的 DAO，只留下一个接口。您现在拥有的将移至服务类（恕我直言）。

The whole repository

整个存储库

public interface ICandidateDao extends JpaRepository<CandidateModel, Long> {}

The modified service (which is now also transactional as it should and all business logic is in the service).

修改后的服务（现在也是事务性的，所有业务逻辑都在服务中）。

@Service
@Transactional
public class CandidateService implements ICandidateService{

    @Autowired
    ICandidateDao candidateDao;

    @Override
    public CandidateModel create(CandidateDto candidate) {
        CandidateModel candidateModel = new CandidateModel(candidate.getFirstName(), candidate.getLastName(), candidate.getEmail(), candidate.getPhone());
        return candidateDao.save(candidate);
    }

    @Override
    public CandidateModel show(Long id) {
        return candidateDao.findOne(id);
    }

    @Override
    public CandidateModel update(Long id, CandidateDto candidate) {
        CandidateModel cm = candidateDao.findOne(id);
        // Update values.
        return candidateDao.save(cm);
    }

    @Override
    public void delete(Long id) {
        candidateDao.delete(id);
    }
}

Now you can also remove the bean definition for the SessionFactoryreducing your Applicationto just a mainmethod.

现在，您还可以删除 bean 定义以将SessionFactory您简化Application为一个main方法。

@SpringBootApplication(exclude = {ErrorMvcAutoConfiguration.class})
@EntityScan("com.buhryn.interviewer.models")
public class Application {

    public static void main(String[] args) {
        System.out.println("--------------------------- Start Application ---------------------------");
        ApplicationContext ctx = SpringApplication.run(Application.class, args);
    }
}

So I would strongly suggest to work with the framework instead of trying to work around the framework. As that will really simplify your developer live.

所以我强烈建议使用框架而不是试图围绕框架工作。因为这将真正简化您的开发人员的生活。

Dependencies

依赖关系

As a final note I would suggest removing the spring-data-jpadependency from your dependencies and use the starter instead. The same goes for AspectJ use the AOP starter for that. Also Hymanson 1 isn't supported anymore so adding that dependency doesn't add anything

最后一点，我建议spring-data-jpa从您的依赖项中删除依赖项并使用 starter。AspectJ 使用 AOP starter 也是如此。此外 Hymanson 1 不再受支持，因此添加该依赖项不会添加任何内容

dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    compile("org.springframework.boot:spring-boot-starter-actuator")
    compile("org.springframework.boot:spring-boot-starter-data-jpa")
    compile("org.springframework.boot:spring-boot-starter-aop")
    compile("com.google.code.gson:gson:2.3.1")
    compile("org.hibernate:hibernate-entitymanager:4.3.10.Final")
    compile("postgresql:postgresql:9.1-901-1.jdbc4")

    testCompile("org.springframework.boot:spring-boot-starter-test")
}