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春天-反射的奇怪错误

[英]Spring - Strange mistake with reflection

 原文  2015-02-12 11:30:54  1   1    java/ spring/ reflection

问题描述

I have some Spring Bean, named PortfolioBean , which contains method getWorkItem() . 我有一些的Spring bean，名为PortfolioBean ，其中包含方法getWorkItem() In another Bean I try to call this Bean's method: 在另一个Bean中，我尝试调用此Bean的方法： 

PortfolioBean lastObjBean = (PortfolioBean) applicationContext.getBean(myAnnotation.parametersLastObjBeanName());
lastObjBean.getWorkTypeItem(7777);

And this code is work perfectly. 这段代码非常完美。 But when I try to call this method through reflection: 但是，当我尝试通过反射调用此方法时： 

PortfolioBean lastObjBean = (PortfolioBean) applicationContext.getBean(myAnnotation.parametersLastObjBeanName());
String getSingleLastObjMethodName=myAnnotation.parametersLastObjBeanGetSingleObject();
System.out.println("getSingleLastObjMethodName "+getSingleLastObjMethodName);                           
Method lastObjBeanGetObjMethod = lastObjBean.getClass()
                                    .getMethod(getSingleLastObjMethodName);

I got Exception: 我有异常： 

getSingleLastObjMethodName getWorkTypeItem
java.lang.NoSuchMethodException: khartn.my.site.mysite.portfolio.beans.PortfolioBean$$EnhancerBySpringCGLIB$$f3bcec1b.getWorkTypeItem()
    at org.springsource.loaded.ri.Exceptions.noSuchMethodException(Exceptions.java:84)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlClassGetMethod(ReflectiveInterceptor.java:134)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$EP44hjAO.getObjectFromEditForm(TemplateHandlerBean.java:205)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$DP44hjAO.getObjectFromEditForm(Unknown Source)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean.getObjectFromEditForm(TemplateHandlerBean.java)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$FastClassBySpringCGLIB$$5e4074cf.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:649)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$EnhancerBySpringCGLIB$$e4ee90d3$$EP44hjAO.getObjectFromEditForm(<generated>)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$EnhancerBySpringCGLIB$$e4ee90d3$$DP44hjAO.getObjectFromEditForm(Unknown Source)
    at khartn.framework.utils.templates.generators.beans.TemplateHandlerBean$$EnhancerBySpringCGLIB$$e4ee90d3.getObjectFromEditForm(<generated>)
    at khartn.my.site.mysite.portfolio.controllers.adminPanel.PortfolioWorksEditElements.editElementPost(PortfolioWorksEditElements.java:155)
    at khartn.my.site.mysite.portfolio.controllers.adminPanel.PortfolioWorksEditElements$$FastClassBySpringCGLIB$$87c21147.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:649)
    at khartn.my.site.mysite.portfolio.controllers.adminPanel.PortfolioWorksEditElements$$EnhancerBySpringCGLIB$$5225d64b.editElementPost(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.springsource.loaded.ri.OriginalClassInvoker.invoke(OriginalClassInvoker.java:47)
    at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1299)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at khartn.framework.utils.cache.controllers.CacheController.doFilterInternal(CacheController.java:41)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1556)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1513)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)

Why this Exception occurs, when I try to get this method with reflection? 当我尝试通过反射获取此方法时，为什么会发生此异常？

1 个解决方案

解决方案1
 1 已采纳  2015-02-12 11:43:43

getWorkTypeItem() is not found because it receives an int or long , and you're asking for a getWorkTypeItem() method that receives no parameters. getWorkTypeItem()因为它接收的是int或long ，并且您正在请求不接收任何参数的getWorkTypeItem()方法。

Try with this: 试试这个： 

Method lastObjBeanGetObjMethod = lastObjBean.getClass().getMethod(getSingleLastObjMethodName, int.class);

Or long.class if it receives a long, etc. You have to match the method's signature. 如果接收到long，则long.class ，等等。您必须匹配方法的签名。

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