How to use js after getting ModelAndView

This time I will show you how to use js to obtain ModelAndView. What are the precautions for js to obtain ModelAndView. The following is a practical case, let's take a look.

1 Method 1 [Valid]

Yes, the access method is the same as elexpression.

Sample code, a userId is stored in the Action of a data display request:

 @RequestMapping(value="/diary")
  public ModelAndView toDiaryList(HttpSession session){
    ModelAndView view = new ModelAndView("/diary_list");
    TbUser user = (TbUser)session.getAttribute(SystemConstant.CURRENT_USER);
    //set info of current user
    if(user!=null){
      Integer id = user.getId();
      view.addObject("userId",id);
    }
    return view;
  }

Use this userId as a query condition in the js in the page jsp file:

<script type="text/javascript">
    var path = '<%=basePath%>';
    var author=${userId};
    $(document).ready(function(){
      queryList();
    });
    function queryList(){
      $.ajax({
        type : 'POST',
        url : path+'queryDiaryList', //通过url传递name参数
        data : {
            author:author,
            page:_currentPage,
            pageSize:_pageSize,
            type:$("#queryType").val()
          },
        dataType : 'json',
        success:function(data){
          if(data.status){
            showTable(data.result);
            //调用分页插件，初始化分页p
            pageShow("queryList",data.ext.total);
          }else{
            alert(data.description);
          }
        },
        error:function(e){
          alert("Net error ,try later.");
        }
      });
    }
    </script>

2 Method 2

【Effective? 】

Is the platform returning js or json? This must be clarified!

Assume that the string returned by the background is stored in responseText, then

If it is js, then

var result = eval("(" + responseText + ")");

If it is json, then

var result = JSON.parse(responseText);

3 Method Three [Effective]

Add hidden fields,

<input id="autoflag" type="hidden" value="${autoflag}">

Easy for js to read

var passflag=document.getElementById("autoflag");

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Recommended reading:

How to convert the html fields in the data into HTML tags

Detailed explanation of the steps to implement request interception with vue axios

The above is the detailed content of How to use js after getting ModelAndView. For more information, please follow other related articles on the PHP Chinese website!