http500错误

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错误:org.apache.jasper.JasperException: An exception occurred processing JSP page /CN/feedback/addResult.jsp at line 55 52: 53: 54: 55: <%if(result_Str.equals("success")){%> 56: 鎻愪氦瀹屾垚锛屾劅璋㈡偍鐨勭暀瑷�紝鎴戜滑浼氬敖蹇洖澶嶏紒 57:
58:
Stacktrace:
错误码:500
信息:
异常:null
exception:org.apache.jasper.JasperException: An exception occurred processing JSP page /CN/feedback/addResult.jsp at line 55 52: 53: 54: 55: <%if(result_Str.equals("success")){%> 56: 鎻愪氦瀹屾垚锛屾劅璋㈡偍鐨勭暀瑷�紝鎴戜滑浼氬敖蹇洖澶嶏紒 57:
58:
Stacktrace:
cause:java.lang.NullPointerException
message:An exception occurred processing JSP page /CN/feedback/addResult.jsp at line 55 52: 53: 54: 55: <%if(result_Str.equals("success")){%> 56: 鎻愪氦瀹屾垚锛屾劅璋㈡偍鐨勭暀瑷�紝鎴戜滑浼氬敖蹇洖澶嶏紒 57:
58:
Stacktrace:
localizedMessage:An exception occurred processing JSP page /CN/feedback/addResult.jsp at line 55 52: 53: 54: 55: <%if(result_Str.equals("success")){%> 56: 鎻愪氦瀹屾垚锛屾劅璋㈡偍鐨勭暀瑷�紝鎴戜滑浼氬敖蹇洖澶嶏紒 57:
58:
Stacktrace:
stackTrace:[Ljava.lang.StackTraceElement;@237ceba