webwork错误提示空指针异常和unknown source
来源:互联网 发布:网络实名制效果数据 编辑:程序博客网 时间:2024/05/16 18:30
场景一:
1.系统提示空指针异常
2.log4j文件提示 unkown source
解决方法:
logger.debug("saveParty[methods]---[variable]photo.getId() : " + photo.getId());
发现是系统在输出log4j信息时,需要取得photo这个对象的某个属性,但是photo这个对象是空,所以出现"错误提示未知的源"
错误信息如下:
java.lang.NullPointerException
at com.marryfive.console.party.business.service.impl.PartyServiceImpl.sa
veParty(Unknown Source)
at com.marryfive.console.party.presentation.action.PartyAction.saveParty
(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.opensymphony.xwork.DefaultActionInvocation.invokeAction(DefaultAc
tionInvocation.java:358)
at com.opensymphony.xwork.DefaultActionInvocation.invokeActionOnly(Defau
ltActionInvocation.java:218)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionIn
vocation.java:192)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(Around
Interceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionIn
vocation.java:190)
at com.opensymphony.xwork.interceptor.AroundInterceptor.intercept(Around
Interceptor.java:31)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionIn
vocation.java:190)
at com.marryfive.common.interceptor.HibernateInterceptor.intercept(Hiber
nateInterceptor.java:96)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionIn
vocation.java:190)
at com.opensymphony.webwork.interceptor.FileUploadInterceptor.intercept(
FileUploadInterceptor.java:238)
at com.opensymphony.xwork.DefaultActionInvocation.invoke(DefaultActionIn
vocation.java:190)
at com.opensymphony.xwork.DefaultActionProxy.execute(DefaultActionProxy.
java:116)
at com.opensymphony.webwork.dispatcher.DispatcherUtils.serviceAction(Dis
patcherUtils.java:225)
at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterD
ispatcher.java:202)
at com.marryfive.console.power.presentation.dispatcher.PermissionFilterD
ispatcher.doFilter(Unknown Source)
at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterCha
in.java:70)
at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain
.java:178)
at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocatio
n.java:229)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:268
)
at com.caucho.server.port.TcpConnection.run(TcpConnection.java:389)
at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:507)
at com.caucho.util.ThreadPool.run(ThreadPool.java:433)
at java.lang.Thread.run(Thread.java:595)
- webwork错误提示空指针异常和unknown source
- 空指针异常错误集
- tabhost空指针异常错误解决方法小记
- 求解spring+hibernate+webwork框架搭建出现空指针异常原因
- 在myeclipse中使用数据库时提示空指针异常
- java中两大异常:空指针异常和数组越界异常
- java中两大异常:空指针异常和数组越界异常
- ViewHolder模式获取控件空指针异常,小错误很坑爹
- struts2项目显示404错误!控制台输入空指针异常!
- 关于使用getActionBar()报空指针异常的错误
- Myeclipse tomcat 部署项目Unknown Source异常
- 异常java.lang.Thread.dumpStack(Unknown Source)
- webwork显示国际化提示信息及错误
- 空指针异常
- struts2空指针异常
- Struts2 空指针异常
- hibernate 空指针异常
- NullPointerException空指针异常
- 第8节 三个败家子(8)——天才家族
- Java连接access数据库
- Asterisk调试启动
- 一个简单的XML for J2ME
- 对象无处不在
- webwork错误提示空指针异常和unknown source
- java+windows+restart
- 互联网进化大结局-虚拟大脑
- Access里的Case效果 “IErrorInfo.GetDescription 因 E_FAIL(0x80004005) 而失败!”的解决方法!
- GridView+Linq增删改操作
- Modest Maps (Maps API) 卫星地图浏览
- 运用虚拟/抽象/接口实现多态的例子(二)--抽象类.
- 关于数据库连接池的形象比喻
- 修改DataSet里的内容