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

Question

Ajax jumps to the background, but cannot return to the view. What is returned is a whole json array. The methods written before can be used. I don’t know why it is wrong this time, and the console does not output any new error message. ajax: {Code...} It stands to reason that it works, the data has data, alert() is also triggered, but I don’t know why it still jumps...

世界只因有你 · Answer

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

ringa_lee · Answer

Is the ajax trigger point written on the submit button?

伊谢尔伦 · Answer

Clear the project and run it again

曾经蜡笔没有小新 · Answer

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

迷茫 · Answer

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";
    }