Consult with Java. Lang. IllegalArgumentException how do you solve this abnormal-CodePudding

 Java. Lang. IllegalArgumentException: Can not find a Java IO. InputStream with the name [InputStream] in the invocation stack. Check the & lt; Param name="inputName" & gt; The tag specified for this action. 
The at org, apache struts 2. Dispatcher. StreamResult. The doExecute (StreamResult. Java: 237) 
The at org, apache struts 2. Dispatcher. StrutsResultSupport. Execute (StrutsResultSupport. Java: 188) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. ExecuteResult (DefaultActionInvocation. Java: 369) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 273) 
The at org, apache struts 2. Interceptor. DeprecationInterceptor. Intercept (DeprecationInterceptor. Java: 41) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At org, apache struts 2) interceptor) was debugging. DebuggingInterceptor. Intercept (DebuggingInterceptor. Java: 256) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. DefaultWorkflowInterceptor. DoIntercept (DefaultWorkflowInterceptor. Java: 167) 
At com. Opensymphony. Xwork2. Interceptor. MethodFilterInterceptor. Intercept (MethodFilterInterceptor. Java: 98) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. The validator. ValidationInterceptor. DoIntercept (ValidationInterceptor. Java: 265) 
The at org, apache struts 2. Interceptor. Validation. AnnotationValidationInterceptor. DoIntercept (AnnotationValidationInterceptor. Java: 76) 
At com. Opensymphony. Xwork2. Interceptor. MethodFilterInterceptor. Intercept (MethodFilterInterceptor. Java: 98) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ConversionErrorInterceptor. Intercept (ConversionErrorInterceptor. Java: 138) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ParametersInterceptor. DoIntercept (ParametersInterceptor. Java: 229) 
At com. Opensymphony. Xwork2. Interceptor. MethodFilterInterceptor. Intercept (MethodFilterInterceptor. Java: 98) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ParametersInterceptor. DoIntercept (ParametersInterceptor. Java: 229) 
At com. Opensymphony. Xwork2. Interceptor. MethodFilterInterceptor. Intercept (MethodFilterInterceptor. Java: 98) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. StaticParametersInterceptor. Intercept (StaticParametersInterceptor. Java: 191) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
The at org, apache struts 2. Interceptor. MultiselectInterceptor. Intercept (MultiselectInterceptor. Java: 73) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
The at org, apache struts 2. Interceptor. DateTextFieldInterceptor. Intercept (DateTextFieldInterceptor. Java: 125) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
The at org, apache struts 2. Interceptor. CheckboxInterceptor. Intercept (CheckboxInterceptor. Java: 91) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
The at org, apache struts 2. Interceptor. FileUploadInterceptor. Intercept (FileUploadInterceptor. Java: 253) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ModelDrivenInterceptor. Intercept (ModelDrivenInterceptor. Java: 100) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ScopedModelDrivenInterceptor. Intercept (ScopedModelDrivenInterceptor. Java: 141) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. ChainingInterceptor. Intercept (ChainingInterceptor. Java: 145) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. PrepareInterceptor. DoIntercept (PrepareInterceptor. Java: 171) 
At com. Opensymphony. Xwork2. Interceptor. MethodFilterInterceptor. Intercept (MethodFilterInterceptor. Java: 98) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
At com. Opensymphony. Xwork2. Interceptor. I18nInterceptor. Intercept (I18nInterceptor. Java: 139) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
The at org, apache struts 2. Interceptor. ServletConfigInterceptor. Intercept (ServletConfigInterceptor. Java: 164) 
At com. Opensymphony. Xwork2. DefaultActionInvocation. Invoke (DefaultActionInvocation. Java: 244) 
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