apache tomcat/7.0.62 - error reporthttp status 500 - string index out of range: -10\r　　 type exception report　　 \r　　 messagestring index out of range: -10　　 \r　　 descriptionthe server encountered an internal error that prevented it from fulfilling this request.　　 \r　　 exception　　 java.lang.stringindexoutofboundsexception: string index out of range: -10　　 java.lang.string.substring(string.java:1911)　　 .lib.decryptutil.filedecrypt(decryptutil.java:22)　　 .encrypt.action.execute(action.java:59)　　 sun.reflect.generatedmethodaccessor38.invoke(unknown source)　　 sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)　　 java.lang.reflect.method.invoke(method.java:606)　　 .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)　　 小主，这个章节后面还有哦，请点击下一页继续阅读，后面更精彩！.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)　　 　　 \r　　 notethe full stack trace of the root cause is available in the apache tomcat/7.0.62 logs.　　 apache tomcat/7.0.62