Question

I have a controller class with a RequestMapping method. This method is not being rendered. I do not see any errors in my console. I am sure my request is being mapped correctly tried with some print statements. But the view is not rendering also there is no error in the log. I just get an HTTP 404 in browser. Not sure what is wrong when other views are being rendered properly. I have read the following question SpringMVC giving 404 returning a view
but does not help.

Here is the request mapping method. Not sure what is wrong or how to debug it? All my jsp files are in one directory. I also have a public default constructor in my Controller. But something else could be wrong with my controller which I don’t see yet. Here is the link to the more detailed code if you want more details.
https://github.com/C4G/V2V/blob/cbc4a8d9e904ab1f5bf47b9550a0879ccff33b01/src/controller/TestResultsController.java

  @RequestMapping(value = "/editTestResultFormGenerator", method = RequestMethod.GET)
  public ModelAndView editTestResultFormGenerator(HttpServletRequest request,
      Model model,
      @RequestParam(value="collectionNumber", required=false) Long collectionNumber,
      @RequestParam(value="collectionId", required=false) Long collectionId) {

    TestResultBackingForm form = new TestResultBackingForm();

    ModelAndView mv = new ModelAndView("editTestResultForm");
    Map<String, Object> m = model.asMap();
    m.put("refreshUrl", getUrl(request));
    m.put("existingTestResult", false);
    if (collectionId != null) {
      form.setId(collectionId);
      TestResult testResult = testResultRepository.findTestResultByCollectionId(collectionId);
      if (testResult != null) {
        form = new TestResultBackingForm(testResult);
        m.put("existingTestResult", true);
      }
      else {
        form = new TestResultBackingForm();
      }
    }

    addEditSelectorOptions(m);
    m.put("editTestResultForm", form);
    m.put("refreshUrl", getUrl(request));
    // to ensure custom field names are displayed in the form
    m.put("testResultFields", utilController.getFormFieldsForForm("TestResult"));
    System.out.println(m);
    mv.addObject("model", m);
    return mv;
  }

Answer 1

Found the problem. With Eclipse autocomplete I chose the wrong ModelAndView class.

I should have chosen.

import org.springframework.web.servlet.ModelAndView;

whereas I chose

import org.springframework.web.portlet.ModelAndView;

That explains it.