在Spring MVC的jsp页面中处理表单提交

Question

I am working on a Spring MVC project, an I'm trying to submit a form and handle it in the same jsp page in order to authenticate the user.

I did authonticate the user by calling a web service built in a Controller with an ajax request , but in order to do that without using Ajax this time I got this error Request method 'POST' not supported

Here is my code:

The form

<form action="/gethealthy/isuser" method="post">
  <input type="text" name="username" placeholder="Username" />
  <input type="password" name="password" placeholder="Password" />
  <button type="submit">Sign In</button>
</form>

JSP code

if (request.getParameter("username") != null) {  
      HomeController aHomeController = new HomeController();
      String username = request.getParameter("username");
      String password = request.getParameter("password");
      String result = aHomeController.isUser(username, password);
      if (aHomeController.isUser(username, password)) {
        String redirectURL = "project/dashboard";
        response.sendRedirect(redirectURL);
      } else {
            out.print("Wrong credentials");
      }

Answer 1

您必须像这样映射控制器：

@RequestMapping(value="/", method = RequestMethod.POST)