2017-03-24 16:01:00,534 (http-nio-8080-exec-3) [ FrameworkServlet.java:993:DEBUG] Could not complete request
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
說明字符串轉換過程拋異常。就去java代碼中找相關找換類型的代碼。比如NumberFormatException看看哪里涉及到了數字類型的轉換。