Question

我目前正在努力在某些条件下返回http响应状态代码。假设，taskService.getNewTasks的返回对象为null。在这种情况下，我想返回状态代码404.在某些例外情况下，我想返回50x，依此类推。

到目前为止我的代码

@RestController
public class TaskController {

  @Autowired
  private TaskService taskService;

  @GetMapping(path = "gettasks")
  private Future<Tasks> getNewTasks() {
    return taskService.getNewTasks();
  }
  ...
}

@Service
public class TaskService {

  @Async
  public Future<Tasks> getNewTasks() {
    ...
    return CompletableFuture.completedFuture(tasks);
  }
}

Answer 1

如https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#mvc-ann-return-types中所述，不支持@ResponseStatus作为控制器处理程序方法的返回类型。由于您使用的是objIE.Quit，因此您可以返回春天支持的Private Function Mexico(partida As String) As String partida = Left(partida, 8) Set objIE = New InternetExplorer objIE.Visible = True objIE.navigate "http://www.siicexcaaarem.org.mx/Bases/TIGIE2007.nsf/4caa80bd19d9258006256b050078593c/$searchForm?SearchView" Cargar objIE.document.getElementsByName("Query")(0).Value = partida For Each boton In objIE.document.getElementsByTagName("input") If boton.Value = "Search" Then boton.Click Exit For End If Next Cargar Application.Wait Now + TimeValue("00:00:03") Dim temp As String Dim i As Integer For Each t In objIE.document.getElementsByTagName("tr") If t.className = "domino-viewentry" Then temp = t.Children(8).innerText End If Next If InStr(temp, "*") > 0 Then temp = Left(temp, Len(temp) - 1) End If If InStr(temp, "%") = 0 Then temp = temp & "%" End If Mexico = temp objIE.Quit End Function或Sub Mex() MsgBox Mexico("33030001") End Sub。如果完成时出现异常，则可以使用常规的Spring异常处理机制，例如使用objIE注释异常。

Answer 2

您可以使用ResponseEntity来实现此目的。您无需更改前端。

@GetMapping(path = "gettasks")
  private ResponseEntity<Future<Tasks>> getNewTasks(@PathVariable final String regidId) {
     Future<Tasks> result = taskService.getNewTasks(regidId);
     return new ResponseEntity<>(result, HttpStatus.INTERNAL_SERVER_ERROR);//You can use HttpStatus.NOT_FOUND for 404 
  }

Answer 3

这可能适合你。

@GetMapping(path = "gettasks")
private CompletableFuture<ResponseEntity<Tasks>> getNewTasks() {
  CompletableFuture<Tasks> future = new CompletableFuture<>();
  future.complete(taskService.getNewTasks());
  if(yourCondition){
    return future.thenApply(result -> new ResponseEntity<Tasks>(result, HttpStatus.STATUS_1));
  }
  return future.thenApply(result -> new ResponseEntity<Tasks>(result, HttpStatus.STATUS_2));
}

CompletableFuture：控制http响应状态码

3 个答案: