http Status 500 - String index out of range: -6
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type Exception report
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message String index out of range: -6
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description the server encountered an internal error that prevented it from fulfilling this request.
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exception
java.lang.StringIndexOutOfBoundsException: String index out of range: -6
java.lang.String.substring(Unknown Source)
.lib.decryptUtil.filedecrypt(decryptUtil.java:22)
.encrypt.Action.execute(Action.java:59)
sun.reflect.GeneratedmethodAccessor38.invoke(Unknown Source)
sun.reflect.delegatingmethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.method.invoke(Unknown Source)
.opensymphony.xwork2.defaultActionInvocation.invokeAction(defaultActionInvocation.java:452)
.opensymphony.xwork2.defaultActionInvocation.invokeActionOnly(defaultActionInvocation.java:291)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:254)
.opensymphony.xwork2.interceptor.defaultworkflowInterceptor.doIntercept(defaultworkflowInterceptor.java:176)
.opensymphony.xwork2.interceptor.methodFilterInterceptor.intercept(methodFilterInterceptor.java:98)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
.opensymphony.xwork2.interceptor.methodFilterInterceptor.intercept(methodFilterInterceptor.java:98)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.conversionErrorInterceptor.intercept(conversionErrorInterceptor.java:133)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.parametersInterceptor.doIntercept(parametersInterceptor.java:207)
.opensymphony.xwork2.interceptor.methodFilterInterceptor.intercept(methodFilterInterceptor.java:98)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.parametersInterceptor.doIntercept(parametersInterceptor.java:207)
.opensymphony.xwork2.interceptor.methodFilterInterceptor.intercept(methodFilterInterceptor.java:98)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.StaticparametersInterceptor.intercept(StaticparametersInterceptor.java:190)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.interceptor.multiselectInterceptor.intercept(multiselectInterceptor.java:75)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.interceptor.checkboxInterceptor.intercept(checkboxInterceptor.java:94)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.modeldrivenInterceptor.intercept(modeldrivenInterceptor.java:100)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.ScopedmodeldrivenInterceptor.intercept(ScopedmodeldrivenInterceptor.java:141)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.interceptor.debugging.debuggingInterceptor.intercept(debuggingInterceptor.java:267)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.chainingInterceptor.intercept(chainingInterceptor.java:142)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.prepareInterceptor.doIntercept(prepareInterceptor.java:166)
.opensymphony.xwork2.interceptor.methodFilterInterceptor.intercept(methodFilterInterceptor.java:98)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.interceptor.ServletconfigInterceptor.intercept(ServletconfigInterceptor.java:164)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
.opensymphony.xwork2.interceptor.ExceptionmappingInterceptor.intercept(ExceptionmappingInterceptor.java:187)
.opensymphony.xwork2.defaultActionInvocation.invoke(defaultActionInvocation.java:248)
org.apache.struts2.impl.StrutsActionproxy.execute(StrutsActionproxy.java:52)
org.apache.struts2.dispatcher.dispatcher.serviceAction(dispatcher.java:485)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsprepareAndExecuteFilter.doFilter(StrutsprepareAndExecuteFilter.java:91)
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note the full stack trace of the root cause is available in the Apache tomcat/7.0.62 logs.