With ajax and value to the controller, want to do a query to determine student id to the student, but when the query error (i.e., student student id query less than) the ajax to result=wrong, it can get the query success return success can't you get it, click the button when a page refresh, no popup alert (result); But the data was successfully added, background console prints out "queries to the student id", make for a long time, crazy, for a great god to solve!

The front-end ajax

 
$(" # aform "). Submit (function () {
The console. The log (" cao a "); The console. The log (" cao a "); The console. The log (" cao a "); 
Let associationName=$(" input [name='associationName'] "). The val (); 
Let associationStudentNumber=$(" input [name='associationStudentNumber'] "). The val (); 
Let associationContent=$(" input [name='associationContent'] "). The val (); 
Let associationIcon=$(" input [name='associationIcon'] "). The val (); 
The console. The log (associationName); 
The console. The log (associationStudentNumber); 
$. Ajax ({
Url: "/youshe/association/save", 
Type: "post", 
DataType: 'text', 
ReturnAll: true, 
Data: {
"AssociationName" : associationName, 
"AssociationStudentNumber" : associationStudentNumber, 
"AssociationContent" : associationContent, 
"AssociationIcon" : associationIcon, 
}, 
Success: the function (result) {

The console. The log (JSON. Stringify (result)); 

If (result=="wrong") {
The console. The log (" student id error log ", result); 
Alert (result); 

} else {
The console. The log (" student id correctly log ", result); 
Alert (result); 
Window. The parent. The location. The href="https://bbs.csdn.net/youshe/association/index"; 
} 
}, 
Error: function (err) {
The console. The log (JSON. Stringify (err)); 
} 
}); 
}) 

Background the controller

 
@ PostMapping ("/association/save ") 
@ ResponseBody 
Public String save (@ RequestParam (value="https://bbs.csdn.net/topics/associationName", the required=false) String associationName, 
@ RequestParam (value="https://bbs.csdn.net/topics/associationStudentNumber", the required=false) String associationStudentNumber, 
@ RequestParam (value="https://bbs.csdn.net/topics/associationContent", the required=false) String associationContent, 
@ RequestParam (value="https://bbs.csdn.net/topics/associationIcon", the required=false) String associationIcon, 
HttpServletResponse response) {
SimpleDateFormat formatter=new SimpleDateFormat (" yyyy - MM - dd HH: MM: ss "); 
The Date the Date=new Date (System. CurrentTimeMillis ()); 

Student Student=studentRepository. FindByStudentNumber (associationStudentNumber); 
//System. Out. Println (student). 
System. The out. Println (formatter. The format (date)); 

If (student!=null) 
{
Association Association=new Association (); 

Association. Elegantly-named setName (associationName); 
Association. SetStudent (student); 
Association. SetContent (associationContent); 
Association. SetAssociationIcon (associationIcon); 
Association. SetCreateTime (formatter. The format (date)); 

AssociationRepository. Save (association); 


System. The out. Println (" query to student id "); 
Return "success1"; 
} 
The else {
System. The out. Println (" query less than student id "); 
Return "wrong"; 
} 
} 
[code=Java] 

CodePudding user response:

Window. The parent. The location href this line commented out and see,
May be not waiting for you to point to confirm, page jump,