嵌套异常是java.lang.IllegalArgumentException：不是托管类型：class

时间：2017-12-29 07:54:39

标签： spring spring-boot spring-data spring-data-jpa spring-restcontroller

我正在尝试部署Spring-Boot application Service访问JpaRepository，PostgreSQL DB在运行时使用JPA和Hibernate连接到src/main/resources/application.properties ，参考MyServiceImpl

中的连接属性

当我在Tomcat上部署构建的.WAR时，应用程序无法启动错误，如下面的错误日志中所示。

有人可以帮忙解决这个错误的含义吗？

注意我已经注意到MyRequestBody和@SpringBootApplication @ComponentScan(<root package name under which all subpackages containing relevant classes >) public class MySpringBootApplication extends SpringBootServletInitializer { 类中的问题点，但我没有得到错误的确切原因，因为我是Spring框架的新手。

我的Spring Boot Starter项目中相关类的定义如下：

  

Spring Boot Application 

@RestController
public class MyController {

    @Autowired
    MyService myService;
  

My Spring-Boot RestController类（自动装配MyService类实例）

public interface MyService {
    //all service method definitions
}
  

我的服务界面（我没有提供任何@Service注释）

@Service("myService")
public class MyServiceImpl implements MyService {

       @Autowired
       private MyRepository myRepository; <-- **ERROR -- Bean not found** 

       //other default services e.g. find, add, delete, update, etc.

}
  

Spring ServiceImpl类，其中自动装配存储库实例在PostgreSQL DB上运行

@Repository
public interface MyRepository extends JpaRepository<MyRequestBody, Long> {
    @Query("select h from MyRequestBody h where h.column1 = ?1")
    List<MyRequestBody> findByColumn1(String col1);
}
  

我的存储库类

@Entity
@Table(name = "myTable", schema = "my_db")
public class MyRequestBody { <-- **ERROR -- Not a managed class type**

     @Id
     @Column(name = "id")
     @GeneratedValue(strategy = GenerationType.SEQUENCE)
     private Long id;
     @Column(name = "column1")
     private String column1;

//getter and setter AND toString methods
  

我的实体类

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-12-28 15:50:23.282 ERROR 5320 --- [ost-startStop-1] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'MyController': Unsatisfied dependency expressed through field 'myService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'myService': Unsatisfied dependency expressed through field 'myRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'myRepository': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Not a managed type: class com.rest.MyRequestBody
  

错误日志（在Tomcat上部署.WAR时）

***************************
APPLICATION FAILED TO START
***************************

Description:

Field myRepository in com.rest.MyServiceImpl required a bean of type 'com.rest.MyRepository' that could not be found.


Action:

Consider defining a bean of type 'com.rest.MyRepository' in your configuration.

29-Dec-2017 08:22:25.023 SEVERE [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
 org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/spring-boot-service]]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986)
        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'myController': Unsatisfied dependency expressed through field 'myService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'myService': Unsatisfied dependency expressed through field 'myRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rest.MyRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
        at org.springframework.boot.web.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:154)
        at org.springframework.boot.web.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:134)
        at org.springframework.boot.web.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:87)
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:169)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5196)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 10 more
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'myService': Unsatisfied dependency expressed through field 'myRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rest.MyRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
        at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
        ... 32 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.rest.MyRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1493)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
        at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
        ... 45 more

29-Dec-2017 08:22:25.026 SEVERE [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [/home/sunilg/apache-tomcat-8.5.24/webapps/spring-boot-service.war]
 java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/spring-boot-service]]
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:756)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986)
        at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
  

添加@EntityScan（“entities_package_name”）

之后 
ctrl+z

5 个答案:

答案 0 :(得分：14)

Spring并不知道你的实体。您需要使用MySpringBootApplication

来表示@EntityScan("your.entities.package")课程

答案 1 :(得分：1)

就我而言，Entity 类中缺少 @Entity & 和 @Id 注释。

答案 2 :(得分：0)

你应该把实体类和 Repository 类放在同一个模块中， 如果没有，您应该将@EntityScan 添加到您的应用程序类

答案 3 :(得分：0)

我们需要使用 setPackagesToScan() 方法使用 LocalContainerEntityManagerFactoryBean 配置我们的实体类包。 考虑下面的例子：

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource, JpaVendorAdapter jpaVendorAdapter) {
    LocalContainerEntityManagerFactoryBean bean = new LocalContainerEntityManagerFactoryBean();
    bean.setDataSource(dataSource);
    bean.setJpaVendorAdapter(jpaVendorAdapter);
    bean.setPackagesToScan("your entity packaged name here");
    return bean;
}

答案 4 :(得分：0)

我遇到了类似的问题，但我不确定您的代码，但我正在为访问此错误的其他人编写此答案。我犯了一个错误，除了工件 ID 和组 ID 的组合之外，还给出了错误的包名称（小错误），当我更正后问题就解决了。

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