Spring MVC RequestMapping not working on RestController

Question

I want to have a RestController-class with the base-mapping "/user" (so the different functions will have paths like "/user/add", "/user/remove" etc or use POST/GET etc)

This is the part that I don't understand and can't get to work:

@RestController
public class UserController {

  @GetMapping("/user")
  public Response login(Principal principal){
    //some output
  }
}

Expected behavior for this case would be that I can access my output under "/user". This works as expected. Now if I modify it to the following (since all functions in this controller should have a path starting with "/user" this would be cleaner)

@RestController
@RequestMapping("/user")
public class UserController {

  @GetMapping("/")
  public Response login(Principal principal){
    //some output
  }
}

I get a 404-Error page and can't access "/user" anymore All examples I have found use the same syntax (or sometimes @RequestMapping(path="/user") but that didn't work as well) and I don't know why it doesn't work. Can someone tell me where my mistake is?

Dmitriy Voropay · Accepted Answer · 2019-03-06 20:38:24Z

7

If you use this code:

@RestController
@RequestMapping("/user")
public class UserController {

@GetMapping("/")
public Response login(Principal principal){
//some output
 }
}

Then your url should have "/" at the end like "http://localhost:8080/user/"

I would just throw away "/" symbol from @GetMapping("/") and left like this:

@RestController
@RequestMapping("/user")
public class UserController {

@GetMapping
public Response login(Principal principal){
//some output
 }
}

And if you need map get or post you can use like this:

@RestController
@RequestMapping("/user")
public class UserController {

@GetMapping("/add")
public SampleObj getJson() {
    return new SampleObj();
 }
}

It should work.

answered Mar 6, 2019 at 20:38

Dmitriy Voropay

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