There are two types of page jump categories: redirection and forwarding, namely redirect and forward.
1: Redirect redirect
The first way: the return value in the controller is String
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public String login(HttpServletRequest req, HttpServletResponse resp) return "redirect:http://localhost:8080/index";
The second way: the return value in the controller is void
public void login(HttpServletRequest req, HttpServletResponse resp)
resp.sendRedirect("http://localhost:8080/index"); The third way: the return value in the controller is ModelAndView
return new ModelAndView("redirect:/toList");2: Forward forward
For example:
request.getRequestDispatcher("/student_list.jsp").forward(request, response); Recommended related articles and tutorials: java introductory tutorial
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