Question

I have many submit buttons in my plain HTML . The one not working is as below:- the other are as same as below

< form:submit cssClass="action-button" name="excelBTNX" value="Excel" id="excelBTNX"  /> 

The function of the above button in the controller is to create a excel sheet and put in session(I can download it from cookies ) and returns back .

The defination of the corrosponding method in Controller is as same as for other buttons which are working fine .

The problem with this is ,it works only at even count hit .When I click for the first time the page gets refreshed . When I click for the second time , control passes to the controller and my excel comes up as cookies.

I tried to track whether the submit is working or not with javaScript code as

     $(‘form’).submit(function(){
     alert("event getting fired");
});

and it gives the alert for both the cases.

I have done the validation part from the controller(manually), so local inbuilt validators are not used . So I believe they are not the case.

How do I fix it ?

Controller codes:-

 @RequestMapping(value = "execute.action", method = RequestMethod.POST, params = "excelBTNX")
public String excelOut(HttpServletRequest request, HttpServletResponse response,
        @ModelAttribute("mymodel") myModel model, BindingResult bindingResult, ModelMap modelmap) {

    scr14(request).initializeSomeCalculation(model);// some innercalss called to manupulate model
    HttpSession session = request.getSession(false);

    if(1=1){//CRUD condition here true in READ mode.
        model= new myModel ();
    }


    byte[] excel = createExcelS14(model,request);
    String fileName = getExcelName() + ".xls";
    String filepath = myFrameWorkUtils.createTempFile(excel, fileName);
    if (session != null) {
        session.setAttribute(fileDownload, filepath);
    }
  scr14(request).initializeSomeCalculation(model);
    model.setDate(somedate);
    return "myPanel";}

Answer 1

Here are some steps:

• Check whether this issue is related to your Excel processing or whether it is something with your Controller. I assume you have something like

@RequestMapping(..., params = "excelBTNX")
public ModelAndView next(...) 
{ <EXCEL FUNCTIONALITY> }

Just comment out the in the Controller and verify that the method is called every time. Please test this a let us know whether this is working.

• What happens that makes you think the Controller is only called at the second click? Maybe the signs that you are looking at don’t really mean that the controller is only called every second click. Please explain.

• Fix if (1=1) code. = in Java is the assignment operator, == is the comparison operator. I assume you want to do a comparison. It also seems like you simplified this part of the code, but it may actually be the problem. Please post the actual code here.

• I don’t see anything about cookies here. It looks to me like you are creating a temporary Excel file, and setting the name of the file in the session.

session.setAttribute(fileDownload, filepath) cannot work, since the key of the session attribute map is of type String. It should probably be session.setAttribute("fileDownload", filepath).

• Can you see whether there is a new temp Excel file generated with each click? You should be able to tell by the timestamp.

This may still not point to the problem, but it will certainly get us closer.