Return 休息时 (Vavr) api
Return Either (Vavr) in rest api
我有方法:
@GetMapping
public Either<ResponseEntity<TaskError>,ResponseEntity<List<TaskDto>>> readAllOrderedByStatus() {
var result = taskCrudService.readAllOrderedByStatus();
if (result.isLeft()) {
return Either.left(
new ResponseEntity<>(
TaskError.TASKS_LIST_NOT_FOUND,
HttpStatus.NOT_FOUND));
}
return Either.right(new ResponseEntity<>(result.get(),HttpStatus.OK));
}
我想 return 列出和 HTTP 状态或 TaskError.TASKS_LIST_NOT_FOUND 和 HTTP 状态,但由于 Either Json 中还有其他内容,例如“正确”等
解决方案(感谢@chrylis -cautiouslyoptimistic)
@GetMapping
public ResponseEntity<?> readAllOrderedByStatus() {
var result = taskCrudService.readAllOrderedByStatus();
return taskCrudService
.readAllOrderedByStatus()
.fold(
error -> new ResponseEntity<>(error,HttpStatus.NOT_FOUND),
list -> new ResponseEntity<>(list,HttpStatus.OK));
}
我将 Either 用于 REST API 中的此类概念。您需要负责将 Either 转换为一致的响应。在大多数情况下,包括您的情况,您需要 fold
:
return taskCrudService.readAllOrderedByStatus() // -> Either
.fold(
__ -> ResponseEntity.notFound(TASKS_LIST_NOT_FOUND).build(),
list -> ResponseEntity.ok(list)
);
我有方法:
@GetMapping
public Either<ResponseEntity<TaskError>,ResponseEntity<List<TaskDto>>> readAllOrderedByStatus() {
var result = taskCrudService.readAllOrderedByStatus();
if (result.isLeft()) {
return Either.left(
new ResponseEntity<>(
TaskError.TASKS_LIST_NOT_FOUND,
HttpStatus.NOT_FOUND));
}
return Either.right(new ResponseEntity<>(result.get(),HttpStatus.OK));
}
我想 return 列出和 HTTP 状态或 TaskError.TASKS_LIST_NOT_FOUND 和 HTTP 状态,但由于 Either Json 中还有其他内容,例如“正确”等
解决方案(感谢@chrylis -cautiouslyoptimistic)
@GetMapping
public ResponseEntity<?> readAllOrderedByStatus() {
var result = taskCrudService.readAllOrderedByStatus();
return taskCrudService
.readAllOrderedByStatus()
.fold(
error -> new ResponseEntity<>(error,HttpStatus.NOT_FOUND),
list -> new ResponseEntity<>(list,HttpStatus.OK));
}
我将 Either 用于 REST API 中的此类概念。您需要负责将 Either 转换为一致的响应。在大多数情况下,包括您的情况,您需要 fold
:
return taskCrudService.readAllOrderedByStatus() // -> Either
.fold(
__ -> ResponseEntity.notFound(TASKS_LIST_NOT_FOUND).build(),
list -> ResponseEntity.ok(list)
);