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社区首页 >问答首页 >Sprint Boot Data JPA:没有'java.util.Set<javax.persistence.EntityManager>‘类型的合格bean可用

问Sprint Boot Data JPA:没有'java.util.Set<javax.persistence.EntityManager>‘类型的合格bean可用
EN

Stack Overflow用户
提问于 2017-02-24 23:49:05
回答 3查看 5.9K关注 0票数 4

我无法开始使用spring-boot-starter-data-jpa。我在this guide之后创建了一个简单的Spring Boot应用程序，但是使用了Hibernate和相关的配置。

build.gradle:

代码语言：javascript
复制
dependencies {
    // Spring stuff
    compile 'org.springframework.boot:spring-boot-starter-data-jpa:1.5.1.RELEASE'
    compile 'org.springframework.data:spring-data-jpa'
    compile 'org.springframework:spring-webmvc'
    // Jackson
    compile 'com.fasterxml.jackson.core:jackson-databind:+'
    compile 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:+'
    // Postgres
    compile 'org.postgresql:postgresql:+'
    // Hibernate
    compile 'org.hibernate:hibernate-core:5.2.8.Final'
}

每当我尝试运行这个应用程序时，我都会得到以下结果：

代码语言：javascript
复制
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-02-24 16:20:27.710 ERROR 1070 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'jpaContext': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'java.util.Set<javax.persistence.EntityManager>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:189) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1193) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1095) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
    at nl.eonics.cdaas.service.Application.main(Application.java:14) [main/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:na]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'java.util.Set<javax.persistence.EntityManager>' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1486) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
    ... 23 common frames omitted

我看过this bug (据报道它已经从1.10.7修复)，但是将spring-data-jpa降级到1.9.x并没有帮助，我仍然得到同样的错误。

有什么想法吗？

java
spring
hibernate
jpa
spring-boot
EN

回答 3

Stack Overflow用户

回答已采纳

发布于 2017-03-07 03:23:28

问题出在hibernate-core上。从依赖项中删除它可以解决此问题。

票数 5
EN

Stack Overflow用户

发布于 2018-07-24 17:38:29

我在使用Spring Boot2.0.3-RELEASE with Hibernate/JPA with PostgreSQL 10时也遇到了同样的问题。

代码语言：javascript
复制
@EnableJpaRepositories
public class DomainConfiguration {

   @Value("${database.password}")
   private String password;

   @Value("${database.url}")
   private String url;

   @Value("${database.username}")
   private String userName;

   @Bean
   public DataSource dataSource() {
      DriverManagerDataSource dataSource = new DriverManagerDataSource();
      dataSource.setDriverClassName(Driver.class.getCanonicalName());
      dataSource.setUrl(this.url);
      dataSource.setUsername(this.userName);
      dataSource.setPassword(this.password);
      return dataSource;
   }

   @Bean
   @DependsOn("flyway")
   public LocalContainerEntityManagerFactoryBean entityManagerFactory() {

      HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
      vendorAdapter.setGenerateDdl(false);

      LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
      factory.setJpaVendorAdapter(vendorAdapter);
      factory.setJpaDialect(new HibernateJpaDialect());
      factory.setPersistenceUnitName("MTH");
      factory.setPackagesToScan("nl.mth.sync.domain");
      factory.setDataSource(dataSource());
      return factory;
   }

   @Bean
   public Flyway flyway(DataSource dataSource) {
      log.debug("--- configurating flyway ---");
      Flyway fly = new Flyway();
      fly.setDataSource(dataSource);
      fly.migrate();
      return fly;
   }

   @Bean
   public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
      JpaTransactionManager txManager = new JpaTransactionManager();
      txManager.setEntityManagerFactory(entityManagerFactory);
      return txManager;
   }

我通过添加以下方法修复了这个问题：

代码语言：javascript
复制
   @Bean
   public EntityManager entityManager(LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean) {
      return localContainerEntityManagerFactoryBean.getObject().createEntityManager();
   }
票数 2
EN

Stack Overflow用户

发布于 2018-09-25 06:01:46

可以通过将以下内容作为参数添加到符号中来解决此问题：

代码语言：javascript
复制
@SpringBootApplication

这将在main方法中实现：

代码语言：javascript
复制
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class, JpaRepositoriesAutoConfiguration.class})
票数 -1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/42442823

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