Spring Boot @RestController和@Controller

Question

I have a @Controller:

@Controller("/")
public class GreetingController {

  @GetMapping("/greeting")
  public String get() {
    return "greeting";
  }
}

Also a @RestController:

@RestController("/test")
public class TestRest {

  @RequestMapping()
  public List<TestDTO> get() {
    List<TestDTO> dtos = new ArrayList<>();
    dtos.add(new TestDTO("value1","value2"));
    dtos.add(new TestDTO("value1","value2"));
    return dtos;
  }
}

The @Controller works correctly, and serves a static HTML page at src/main/resources/templates/greeting.html

But the @RestController does not work, all I get are 404s.

If I move the method from the @RestController into the @Controller and add a @ResponseBody annotation, it then starts working.

How can I have the controllers as different classes?

Answer 1

@RestController and @Controller do not take the path to the resource as a parameter. Perhaps try something along the lines of...

@RestController
@RequestMapping("/test")
public class TestRest {

  @RequestMapping(method = RequestMethod.GET)
  public List<TestDTO> get() {
    List<TestDTO> dtos = new ArrayList<>();
    dtos.add(new TestDTO("value1","value2"));
    dtos.add(new TestDTO("value1","value2"));
    return dtos;
  }
}

Answer 2

You question itself has the answers, for the RESTController to work, you would need to have a @ResponseBody because, for all REST calls, there needs to be response body to return the data. I hope adding @ResponseBody alone will solve the problem.