如何解决此异常? [英] How to resolve this exception ?
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问题描述
亲爱的朋友们,
当我尝试在Tomcat 6中部署我的appalication之后发生了一些trces。
提供一些指导以解决此错误。
引起:com.sun.faces.spi.InjectionProviderException:java.lang.reflect.InvocationTargetException
at com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:120)
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:223)
... 38更多
引起:java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 )
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache。 catalina.util.DefaultAnnotationProcessor.postConstruct(DefaultAnnotationProcessor.j ava:96)
at com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:118)
... 39 more
引起:java.lang.NullPointerException
在ImageBean.getAlbumList(ImageBean.java:87)
在ImageBean.initAlbums(ImageBean.java:96)
... 45更多
给你回复..
提前致谢
Sivasankar
解决方案
< blockquote> 当应用程序在需要对象的情况下尝试使用null时抛出。其中包括:
详细信息:
类NullPointerException [ ^ ]
Java error java.lang.nullpointerexception [ ^ ]
DEBUG并寻找潜力放置并修复/处理它。
它工作正常。
感谢sandeep您的有效评论:)
Dear Friends ,
While i try to deploy my appalication in Tomcat 6 following stact trces occurs .
Give some guidance to resolve this error.
Caused by: com.sun.faces.spi.InjectionProviderException: java.lang.reflect.InvocationTargetException
at com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:120)
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:223)
... 38 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.util.DefaultAnnotationProcessor.postConstruct(DefaultAnnotationProcessor.java:96)
at com.sun.faces.vendor.Tomcat6InjectionProvider.invokePostConstruct(Tomcat6InjectionProvider.java:118)
... 39 more
Caused by: java.lang.NullPointerException
at ImageBean.getAlbumList(ImageBean.java:87)
at ImageBean.initAlbums(ImageBean.java:96)
... 45 more
Awating your reply..
Thanks in advance
Sivasankar
解决方案
Thrown when an application attempts to use null in a case where an object is required. These include:
- Calling the instance method of a null object.
- Accessing or modifying the field of a null object.
- Taking the length of null as if it were an array.
- Accessing or modifying the slots of null as if it were an array.
- Throwing null as if it were a Throwable value.
Details here:
Class NullPointerException[^]
Java error java.lang.nullpointerexception[^]
DEBUG and look for the potential place and fix/handle it.
It''s working fine.
Thanks sandeep for your valid comment :)
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