Struts2神奇bug集锦01

java.lang.NullPointerException

com.opensymphony.xwork2.ognl.SecurityMemberAccess.isPackageExcluded(SecurityMemberAccess.java:114)

com.opensymphony.xwork2.ognl.SecurityMemberAccess.isAccessible(SecurityMemberAccess.java:63)

ognl.OgnlRuntime.isMethodAccessible(OgnlRuntime.java:1880)

ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1225)

ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68)

com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117)

com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108)

ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1369)

ognl.ASTMethod.getValueBody(ASTMethod.java:90)

ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)

ognl.SimpleNode.getValue(SimpleNode.java:258)

ognl.Ognl.getValue(Ognl.java:494)

ognl.Ognl.getValue(Ognl.java:458)

com.opensymphony.xwork2.ognl.OgnlUtil$2.execute(OgnlUtil.java:309)

com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecute(OgnlUtil.java:340)

com.opensymphony.xwork2.ognl.OgnlUtil.getValue(OgnlUtil.java:307)

com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:423)

com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:287)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:250)

org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)

com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)

org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76)

com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229)

com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)

com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)

com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:244)

org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)

org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)

org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)

在写OGNL练习的时候报了上述一场,检查代码都没有问题,最后尝试后发现,定义的action类必须放在某个自己定义的package下,不能放在src主目录.......

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