java - @RestController 中的动态 @RequestParam

Question

我有一个 Controller :

@RestController
@RequestMapping(value = UserRestController.REST_URL, produces = 
MediaType.APPLICATION_JSON_VALUE)
public class UserRestController {

static final String REST_URL = "/customers";

@GetMapping
public List<User> getAll() {
    return service.getAll();
  }
}

它成功处理此类请求，如:

GET:    /customers/

我想通过一些参数来获取用户。例如，电子邮件:

GET:   /customers?email=someemail@gmail.

我尝试过:

@GetMapping("/")
public User getByEmail(@RequestParam(value = "email") String email) {
    return super.getByEmail(email);
}

预计我会收到一个异常，因为“/”已经映射到 getAll 类上。有什么办法可以解决这个问题吗？

Answer 1

@GetMapping
public Object get((@RequestParam(value = "email", required = false) String email) {
    if (email != null && !email.isEmpty()) { 
     return super.getByEmail(email);
    } else {
      return service.getAll();
    }  
}