Spring MVC - 请求映射，具有两个不同参数的两个 url

Question

Is it possible in Spring to have one method with two different urls with different params for each method?

Below is pseudo code

@RequestMethod(URL1-param1, URL2-param2)
public void handleAction(@ModelAttribute("A") A a, ...) {
}

At the same time ULR1 is mapped in some other Controller as

@RequestMethod(URL1)
public void handleAction1(@ModelAttribute("A") A a, ...) {
}

Answer 1

Update: It appears your question is completely different.

No, you can't have the same url with different parameters in different controllers. And it doesn't make much sense - the url specifies a resource or action, and it cannot be named exactly the same way in two controllers (which denote different behaviours).

You have two options:

• use different URLs
• use one method in a misc controller that dispatches to the different controllers (which are injected) depending on the request param.

---

Original answer:

No. But you can have two methods that do the same thing:

@RequestMethod("/foo")
public void foo(@ModelAttribute("A") A a) {
    foobar(a, null);
}

@RequestMethod("/bar")
public void bar(@ModelAttribute("B") B b) {
    foobar(null, b);
}

If I haven't understood correctly, and you want the same ModelAttribute, then simply:

@RequestMapping(value={"/foo", "/bar"})

And finally - if you need different request parameters, you can use @RequestParam(required=false) to list all possible params.

Answer 2

you can supply multiple mappings for your handler like this

@RequestMapping(value={"", "/", "welcome"})
public void handleAction(@ModelAttribute("A") A a, ...) { }

But if you want to use different parameters for each mapping, then you have to extract your method.

Answer 3

Something like this

@RequestMapping(value={"URL1"}, method=RequestMethod.POST)
public String handleSubmit(@ModelAttribute("A") A command, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    return helperSubmit();
}

@RequestMapping(value={"URL2"}, method=RequestMethod.POST)
public String handleSubmit(@ModelAttribute("A") A command, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    return helperSubmit();
}

private helperSubmit() {
  return "redirect:" + someUrl;
}