Java 弹簧&x2B;Hibernate:创建bean时出错
我正在开发一个Spring MVC+Hibernate web应用程序,我遇到了一个例外:Java 弹簧&x2B;Hibernate:创建bean时出错,java,spring,hibernate,spring-mvc,Java,Spring,Hibernate,Spring Mvc,我正在开发一个Spring MVC+Hibernate web应用程序,我遇到了一个例外: Dec 07, 2015 11:52:51 AM org.springframework.web.context.ContextLoader initWebApplicationContext SEVERE: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error crea
Dec 07, 2015 11:52:51 AM org.springframework.web.context.ContextLoader
initWebApplicationContext
SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mainRestController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.LoginService it.grimi.babel.controller.MainRestController.loginService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.dao.LoginDao it.grimi.babel.service.LoginServiceImpl.loginDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginDao' defined in file [C:\NSI\_progetti\EclipseWorkspace\BabelIface\target\BabelIface\WEB-INF\classes\it\grimi\babel\service\dao\LoginDaoImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:446)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:328)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5014)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5528)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:677)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:552)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1717)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:301)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1516)
at org.apache.catalina.manager.ManagerServlet.deploy(ManagerServlet.java:912)
at org.apache.catalina.manager.ManagerServlet.doGet(ManagerServlet.java:371)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:614)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2476)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2465)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.LoginService it.grimi.babel.controller.MainRestController.loginService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.dao.LoginDao it.grimi.babel.service.LoginServiceImpl.loginDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginDao' defined in file [C:\NSI\_progetti\EclipseWorkspace\BabelIface\target\BabelIface\WEB-INF\classes\it\grimi\babel\service\dao\LoginDaoImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:571)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 58 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.dao.LoginDao it.grimi.babel.service.LoginServiceImpl.loginDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginDao' defined in file [C:\NSI\_progetti\EclipseWorkspace\BabelIface\target\BabelIface\WEB-INF\classes\it\grimi\babel\service\dao\LoginDaoImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1145)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1069)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:967)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:543)
... 60 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: it.grimi.babel.service.dao.LoginDao it.grimi.babel.service.LoginServiceImpl.loginDao; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginDao' defined in file [C:\NSI\_progetti\EclipseWorkspace\BabelIface\target\BabelIface\WEB-INF\classes\it\grimi\babel\service\dao\LoginDaoImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:571)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 71 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginDao' defined in file [C:\NSI\_progetti\EclipseWorkspace\BabelIface\target\BabelIface\WEB-INF\classes\it\grimi\babel\service\dao\LoginDaoImpl.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1145)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1069)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:967)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:543)
... 73 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [it.grimi.babel.service.dao.LoginDaoImpl]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:89)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1098)
... 84 more
Caused by: java.lang.ExceptionInInitializerError
at it.grimi.babel.hibernate.utils.SingleSessionFactory.getInstance(SingleSessionFactory.java:42)
at it.grimi.babel.service.dao.LoginDaoImpl.<init>(LoginDaoImpl.java:20)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)
... 86 more
Caused by: org.hibernate.MappingNotFoundException: resource: it/grimi/babel/model/Login.hbm.xml not found
at org.hibernate.cfg.Configuration.addResource(Configuration.java:746)
at org.hibernate.cfg.Configuration.addClass(Configuration.java:791)
at it.grimi.babel.hibernate.utils.SingleSessionFactory$SingleSessionHelper.getSingleSession(SingleSessionFactory.java:25)
at it.grimi.babel.hibernate.utils.SingleSessionFactory$SingleSessionHelper.<clinit>(SingleSessionFactory.java:13)
... 93 more
Dec 07, 2015 11:52:51 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: One or more listeners failed to start. Full details will be found in the appropriate container log file
Dec 07, 2015 11:52:51 AM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/BabelIface] startup failed due to previous errors
Dec 07, 2015 11:52:51 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deployment of configuration descriptor C:\NSI\_software\apache-tomcat-7.0.62\conf\Catalina\localhost\BabelIface.xml has finished in 1,790 ms
…我想发布LoginDaoImpl
、LoginServiceImpl
类和MainRestController
类作为REST API的入口点
LoginDaoImpl
@Repository("loginDao")
public class LoginDaoImpl implements LoginDao {
private SessionFactory sessionFactory = SingleSessionFactory.getInstance();
public User doLogin(User user) {
return (User) this.sessionFactory.getCurrentSession().createQuery("from users where username = :username and password =: password ")
.setParameter("username", user.getUsername())
.setParameter("password", user.getPassword()).list().get(0);
}
}
@Service("loginService")
public class LoginServiceImpl implements LoginService {
@Autowired
LoginDao loginDao;
public User doLogin(User user) {
return loginDao.doLogin(user);
}
}
LoginServiceImpl
@Repository("loginDao")
public class LoginDaoImpl implements LoginDao {
private SessionFactory sessionFactory = SingleSessionFactory.getInstance();
public User doLogin(User user) {
return (User) this.sessionFactory.getCurrentSession().createQuery("from users where username = :username and password =: password ")
.setParameter("username", user.getUsername())
.setParameter("password", user.getPassword()).list().get(0);
}
}
@Service("loginService")
public class LoginServiceImpl implements LoginService {
@Autowired
LoginDao loginDao;
public User doLogin(User user) {
return loginDao.doLogin(user);
}
}
MainRestController
@RestController
public class MainRestController {
@Autowired
LoginService loginService;
@RequestMapping(
value = "/login",
method = RequestMethod.POST,
produces = MediaType.APPLICATION_JSON_VALUE
)
public ResponseEntity<User> doLogin(@RequestBody User user) {
User usr = this.loginService.doLogin(user);
if (usr != null) {
return new ResponseEntity<User>(usr, HttpStatus.OK);
} else {
return new ResponseEntity<User>(HttpStatus.BAD_REQUEST);
}
}
}
@RestController
公共类MainRestController{
@自动连线
登录服务登录服务;
@请求映射(
value=“/login”,
method=RequestMethod.POST,
products=MediaType.APPLICATION\u JSON\u值
)
公共响应性doLogin(@RequestBody User){
用户usr=this.loginService.doLogin(用户);
如果(usr!=null){
返回新的响应状态(usr,HttpStatus.OK);
}否则{
返回新的响应属性(HttpStatus.BAD_请求);
}
}
}
我知道有一个非常愚蠢的错误,但我找不到,我需要你的比较
怎么了?异常的根本原因是: MappingNotFoundException:资源:it/grimi/babel/model/Login.hbm.xml 找不到 请确保此xml文件存在 您添加了带有“confirfication.addClass”的登录类,hibernate的文档中说“hibernate将在类路径中搜索名为…/…hbm.xml的映射文件。” 而不是创建一个 “sessionFactory=新的AnnotationConfiguration() .configure().buildSessionFactory() 并在实体上使用注释 您必须使用
hConf.addAnnotatedClass(Login.class).addAnnotatedClass(User.class);
而不是方法
从Hibernate文档
来自配置
类的源代码-
/**
* Read a mapping as an application resource using the convention that a class
* named <tt>foo.bar.Foo</tt> is mapped by a file <tt>foo/bar/Foo.hbm.xml</tt>
* which can be resolved as a classpath resource.
*
* @param persistentClass The mapped class
* @return this (for method chaining purposes)
* @throws MappingException Indicates problems locating the resource or
* processing the contained mapping document.
*/
public Configuration addClass(Class persistentClass) throws MappingException {
String mappingResourceName = persistentClass.getName().replace( '.', '/' ) + ".hbm.xml";
LOG.readingMappingsFromResource( mappingResourceName );
return addResource( mappingResourceName, persistentClass.getClassLoader() );
}
/**
* Read metadata from the annotations associated with this class.
*
* @param annotatedClass The class containing annotations
*
* @return this (for method chaining)
*/
@SuppressWarnings({ "unchecked" })
public Configuration addAnnotatedClass(Class annotatedClass) {
XClass xClass = reflectionManager.toXClass( annotatedClass );
metadataSourceQueue.add( xClass );
return this;
}
/**
*使用类的约定将映射作为应用程序资源读取
*名为foo.bar.foo的文件映射为foo/bar/foo.hbm.xml
*可以将其解析为类路径资源。
*
*@param persistentClass映射的类
*@返回此(用于方法链接)
*@throws-MappingException表示查找资源或
*正在处理包含的映射文档。
*/
公共配置addClass(类persistentClass)引发MappingException{
字符串mappingResourceName=persistentClass.getName().replace('.','/')+“.hbm.xml”;
LOG.readingMappingsFromResource(mappingResourceName);
返回addResource(mappingResourceName,persistentClass.getClassLoader());
}
/**
*从与此类关联的注释中读取元数据。
*
*@param annotatedClass包含注释的类
*
*@返回此(用于方法链接)
*/
@SuppressWarnings({“unchecked”})
公共配置addAnnotatedClass(类annotatedClass){
XClass XClass=reflectionManager.toXClass(annotatedClass);
metadataSourceQueue.add(xClass);
归还这个;
}
从上面的代码中可以明显看出,
addClass
方法查找映射文件,addAnnotatedClass
将使用Reflections
使用类的annotations
读取元数据。太棒了,你说得对!这是因为我使用的是带注释的bean。我知道这会很容易。谢谢