javascript - ajax cannot return to the view when entering the background.

Question

ajax jumps to the background and cannot return to the view. What is returned is a whole json array

The methods written before can be used, but I don’t know why it is wrong this time, and the console does not output a new error message.

ajax:

$.ajax({
    type : "post",
        url : "Qtitle/findTypeTitle3",
        dataType : "json",
        data : {"tite" : it},
        success : function(data) {        
            alert(11111); //能弹出
        
        }
});

It stands to reason that it works, data has data, alert() is also triggered, but I don’t know why it still jumps to a page that outputs a json array

Answer 1

The Controller’s method returns JSON data, but @ResponseBody is not added to the method, so the returned JSON data jumps to another page.

Answer 2

Is the ajax trigger point written on the submit button?

Answer 3

Clear the project and run it again

Answer 4

It is possible that the correct json format is not returned
The returned data has other code formats

Answer 5

Have you added the @ResponseBody annotation? This annotation will convert the return value into json format

    //跳转到jsp页面
    @RequestMapping("jspViewTest")
    public String jspViewTest() {
        return "index";
    }

    //返回数据对象
    @RequestMapping("dataTest")
    @ResponseBody
    public String dataTest() {
        return "index";
    }