Is there a way to support two or more parameter names that represent the same value with spring requ-CodePudding

So as an example, lets say we have the following method.

@PostMapping("/api/foos")
@ResponseBody
public String addFoo(@RequestParam(name = "fId") String fooId) { 
    return "ID: "   fooId;
}

Now imagine that users sometimes submit fId and sometimes use f_id. I want to be able to accept both/either with one as the preferred if they are both submitted.

something like:

@PostMapping("/api/foos")
@ResponseBody
public String addFoo(@RequestParam(name = "fId" or "f_id") String fooId) { 
    return "ID: "   fooId;
}

I don't believe the code above is valid but it illustrates what I'm trying to do if it can be done. I know the manual solution is to accept both params as separate params and then create logic to determine which to use for the response. I'm just wondering if there is a better less code intense solution!

CodePudding user response：

I don't think you can do that but you could just check in the java code like:

public String addFoo(
  @RequestParam(name = "fId", required=false) String fooId, 
  @RequestParam(name = "f_Id", required=false) String foo_Id
) { 
  if (fooId == null) fooId = foo_Id;
  return "ID: "   fooId;
}

A bit simplistic but that shows the idea.

CodePudding user response：

You shouldn't handle this in the backend. Your endpoint should receive always the same parameters (if you only need 1, then just 1 RequestParam). Also, I don't know the context, but for each form, you should only have 1 input for 1 objective. If the same parameter can come from several inputs, maybe you should reconsider your form.

However, if this is the case and can't be avoided, I would suggest you add a hidden input inside your form, and when the user presses the submit button, first fill the hidden input with the value you need and then send, make the backend call.