Spring 创建bean时出错。FindBy方法中出错
DTO 控制器Spring 创建bean时出错。FindBy方法中出错,spring,spring-mvc,crud,Spring,Spring Mvc,Crud,DTO 控制器 @Entity(name = "EnumMaster") public class EnumMaster { @Id @org.hibernate.annotations.Type(type="pg-uuid") private UUID EnumerationID; private String Name; private String Text; private String Description; public E
@Entity(name = "EnumMaster")
public class EnumMaster {
@Id
@org.hibernate.annotations.Type(type="pg-uuid")
private UUID EnumerationID;
private String Name;
private String Text;
private String Description;
public EnumMaster(){}
public EnumMaster(UUID enumerationID) {
// TODO Auto-generated constructor stub
this.EnumerationID= enumerationID;
}
public EnumMaster(String name) {
// TODO Auto-generated constructor stub
this.Name= name;
}
.
setter getter
.
@RequestMapping（value=“/retrievefromplicationdropdown”，method=RequestMethod.GET，products=“application/json”）
公共@ResponseBody
ArrayList getPublicationStatus（NativeWebRequest请求）{
ArrayList ArrayList=新的ArrayList（）；
收集统计员；
试一试{
String name=“ePublicationStatus”；
enumMaster=enumMasterRepository.findByName（名称）；
}
}
@RequestMapping(value = "/retrivefromPublicationDropDown", method = RequestMethod.GET, produces = "application/json")
public @ResponseBody
ArrayList getPublicationStatus(NativeWebRequest req) {
ArrayList<EnumValue> arrayList = new ArrayList<EnumValue>();
Collection<EnumMaster> enumMaster;
try {
String name = "ePublicationStatus";
enumMaster=enumMasterRepository.findByName(name);
}
}
公共接口EnumMasterRepository扩展了Crudepository{
集合findByName（字符串名称）；
}
org.springframework.beans.factory.BeanCreationException:创建名为“dropDownController”的bean时出错：自动连线依赖项的注入失败；嵌套异常为org.springframework.beans.factory.BeanCreationException:无法自动连接字段：com.dts.adminportal.service.DropDownService com.dts.adminportal.controller.DropDownService；嵌套异常为org.springframework.beans.factory.BeanCreationException:创建名为“dropDownServiceImpl”的bean时出错：自动连线依赖项的注入失败；嵌套异常为org.springframework.beans.factory.BeanCreationException:无法自动关联字段：com.dts.adminportal.repository.EnumMasterRepository com.dts.adminportal.service.DropDownServiceImpl.EnumMasterRepository；嵌套异常为org.springframework.beans.factory.BeanCreationException:创建名为“enumMasterRepository”的bean时出错：FactoryBean在创建对象时引发异常；嵌套异常是java.lang.NullPointerException
位于org.springframework.beans.factory.annotation.AutoWiredNotationBeanPostProcessor.postProcessPropertyValues（AutoWiredNotationBeanPostProcessor.java:287）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1106）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:517）
位于org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:456）
位于org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject（AbstractBeanFactory.java:294）
位于org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:225）
位于org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:291）
位于org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:193）
位于org.springframework.beans.factory.support.DefaultListableBeanFactory.PreInstanceSingleton（DefaultListableBeanFactory.java:609）
位于org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:918）
位于org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:469）
位于org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext（ContextLoader.java:383）
位于org.springframework.web.context.ContextLoader.initWebApplicationContext（ContextLoader.java:283）
位于org.springframework.web.context.ContextLoaderListener.contextInitialized（ContextLoaderListener.java:111）
位于org.apache.catalina.core.StandardContext.listenerStart（StandardContext.java:4135）
位于org.apache.catalina.core.StandardContext.start（StandardContext.java:4630）
位于org.apache.catalina.core.ContainerBase.start（ContainerBase.java:1045）
位于org.apache.catalina.core.StandardHost.start（StandardHost.java:785）
位于org.apache.catalina.core.ContainerBase.start（ContainerBase.java:1045）
位于org.apache.catalina.core.StandardEngine.start（StandardEngine.java:445）
位于org.apache.catalina.startup.Embedded.start（Embedded.java:825）
位于org.codehaus.mojo.tomcat.AbstractRunMojo.startContainer（AbstractRunMojo.java:558）
位于org.codehaus.mojo.tomcat.AbstractRunMojo.execute（AbstractRunMojo.java:255）
位于org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo（DefaultBuildPluginManager.java:106）
位于org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:208）
位于org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:153）
位于org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:145）
位于org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:84）
位于org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:59）
位于org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild（LifecycleStarter.java:183）
位于org.apache.maven.lifecycle.internal.LifecycleStarter.execute（LifecycleStarter.java:161）
在org.apache.maven.DefaultMaven.doExecute（DefaultMaven.java:317）
位于org.apache.maven.DefaultMaven.execute（DefaultMaven.java:152）
位于org.apache.maven.cli.MavenCli.execute（MavenCli.java:555）
位于org.apache.maven.cli.MavenCli.doMain（MavenCli.java:214）
位于org.apache.maven.cli.MavenCli.main（MavenCli.java:158）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（未知源）
在sun.reflect.DelegatingMethodAccessorImpl.invoke处（未知源）
位于java.lang.reflect.Method.invoke（未知源）
位于org.codehaus.plexus.classworlds.launcher.launcher.launchEnhanced（launcher.java:289）
位于org.codehaus.plexus.classworlds.launcher.launcher.launch（launcher.java:229）
位于org.codehaus.plexus.classworlds.launcher.launcher.mainWithExitCode（launcher.java:415）
位于org.codehaus.plexus.classworlds.launcher.launcher.main（launcher.java:356）
原因：org.springframework.beans.factory.BeanCreationException:无法自动连接字段：com.dts.adminportal
public interface EnumMasterRepository extends CrudRepository<EnumMaster,UUID>{
Collection<EnumMaster> findByName(String name);
}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dropDownController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.service.DropDownService com.dts.adminportal.controller.DropDownController.dropDownService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dropDownServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.repository.EnumMasterRepository com.dts.adminportal.service.DropDownServiceImpl.enumMasterRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enumMasterRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:609)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:469)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4135)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4630)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.startup.Embedded.start(Embedded.java:825)
at org.codehaus.mojo.tomcat.AbstractRunMojo.startContainer(AbstractRunMojo.java:558)
at org.codehaus.mojo.tomcat.AbstractRunMojo.execute(AbstractRunMojo.java:255)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.service.DropDownService com.dts.adminportal.controller.DropDownController.dropDownService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dropDownServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.repository.EnumMasterRepository com.dts.adminportal.service.DropDownServiceImpl.enumMasterRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enumMasterRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
... 43 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dropDownServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.repository.EnumMasterRepository com.dts.adminportal.service.DropDownServiceImpl.enumMasterRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enumMasterRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:876)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:735)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
... 45 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.dts.adminportal.repository.EnumMasterRepository com.dts.adminportal.service.DropDownServiceImpl.enumMasterRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enumMasterRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:506)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:284)
... 56 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'enumMasterRepository': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:149)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1442)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:876)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:818)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:735)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)
... 58 more
Caused by: java.lang.NullPointerException
at org.hibernate.ejb.criteria.path.AbstractPathImpl.unknownAttribute(AbstractPathImpl.java:110)
at org.hibernate.ejb.criteria.path.AbstractPathImpl.locateAttribute(AbstractPathImpl.java:218)
at org.hibernate.ejb.criteria.path.AbstractPathImpl.get(AbstractPathImpl.java:189)
at org.springframework.data.jpa.repository.query.QueryUtils.toExpressionRecursively(QueryUtils.java:408)
at org.springframework.data.jpa.repository.query.JpaQueryCreator$PredicateBuilder.build(JpaQueryCreator.java:197)
at org.springframework.data.jpa.repository.query.JpaQueryCreator.toPredicate(JpaQueryCreator.java:144)
at org.springframework.data.jpa.repository.query.JpaQueryCreator.create(JpaQueryCreator.java:86)
at org.springframework.data.jpa.repository.query.JpaQueryCreator.create(JpaQueryCreator.java:44)
at org.springframework.data.repository.query.parser.AbstractQueryCreator.createCriteria(AbstractQueryCreator.java:109)
at org.springframework.data.repository.query.parser.AbstractQueryCreator.createQuery(AbstractQueryCreator.java:88)
at org.springframework.data.repository.query.parser.AbstractQueryCreator.createQuery(AbstractQueryCreator.java:73)
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery$QueryPreparer.<init>(PartTreeJpaQuery.java:98)
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:60)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:90)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:162)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:68)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:279)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:147)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:153)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:43)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
... 66 more