Angular 如何使用@ControllerAdvice和ResponseEntity处理异常

我正在处理一个Java应用程序，我正在处理的功能是，在用户单击“导出”按钮时，从数据库填充文件内容后下载文件，文件正确生成，我遇到的问题是当我尝试处理异常时，如果出现异常，我的代码如下：

控制器方法：

  @GetMapping(value = "/exportods/{id}")
  @ResponseBody
  public ResponseEntity<ByteArrayResource> exportODSFile(@PathVariable  String id )
      throws ObjectNotFoundException, IOException{


    File odsFfile = null;
    ByteArrayResource resource = null;
    HttpHeaders headers = null;

    try {          
      //generating ods file
      odsFfile = dao.exportInvalidationRequest(id);

      Path pathObj = Paths.get(odsFfile.getAbsolutePath());

      resource = new ByteArrayResource(Files.readAllBytes(pathObj));

      headers = new HttpHeaders();
      headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + odsFfile.getName());
      headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
      headers.add(HttpHeaders.CONTENT_LENGTH, String.valueOf(Files.readAllBytes(pathObj).length));
      headers.add(HttpHeaders.TRANSFER_ENCODING, "binary");

    } catch (ObjectNotFoundException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,"message");
    }  catch (IOException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,
          "message");
    }
    return new ResponseEntity<>(resource, headers, HttpStatus.OK);
  }

@ControllerAdvice
public class ODSExportExceptionHandlerAdvice {
  @ResponseBody
  @ExceptionHandler(ODSExportResourceException.class)
  public ResponseEntity handleException(ODSExportResourceException e) {
    // log exception
    return ResponseEntity.status(e.getHttpStatus()).body(e.getMessage());
  }
}

downloadODSFile(id: string) {
    return this.httpClient.get(`${this.basePath}/exportods/${id}`, {
        responseType: 'arraybuffer'
    });
}

downloadODSFile(id) {
         this.requestService.downloadODSFile(id).
            subscribe(data => {
                saveAs(new Blob([data], { type: '\'application/vnd.oasis.opendocument.spreadsheet\'' }), 
                          id);
                 }, error => {
             this.errorService.displayError(error);
             console.log('here is the error ' + error.toString())
            });
}

ODSExportResourceException类

public class ODSExportResourceException extends  RuntimeException{

  private HttpStatus httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;

  public HttpStatus getHttpStatus() {
    return httpStatus;
  }

  public ODSExportResourceException(HttpStatus httpStatus, String message) {
    super(message);
    this.httpStatus = httpStatus;
  }
}

前端角度服务方式：

  @GetMapping(value = "/exportods/{id}")
  @ResponseBody
  public ResponseEntity<ByteArrayResource> exportODSFile(@PathVariable  String id )
      throws ObjectNotFoundException, IOException{


    File odsFfile = null;
    ByteArrayResource resource = null;
    HttpHeaders headers = null;

    try {          
      //generating ods file
      odsFfile = dao.exportInvalidationRequest(id);

      Path pathObj = Paths.get(odsFfile.getAbsolutePath());

      resource = new ByteArrayResource(Files.readAllBytes(pathObj));

      headers = new HttpHeaders();
      headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + odsFfile.getName());
      headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
      headers.add(HttpHeaders.CONTENT_LENGTH, String.valueOf(Files.readAllBytes(pathObj).length));
      headers.add(HttpHeaders.TRANSFER_ENCODING, "binary");

    } catch (ObjectNotFoundException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,"message");
    }  catch (IOException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,
          "message");
    }
    return new ResponseEntity<>(resource, headers, HttpStatus.OK);
  }

@ControllerAdvice
public class ODSExportExceptionHandlerAdvice {
  @ResponseBody
  @ExceptionHandler(ODSExportResourceException.class)
  public ResponseEntity handleException(ODSExportResourceException e) {
    // log exception
    return ResponseEntity.status(e.getHttpStatus()).body(e.getMessage());
  }
}

downloadODSFile(id: string) {
    return this.httpClient.get(`${this.basePath}/exportods/${id}`, {
        responseType: 'arraybuffer'
    });
}

downloadODSFile(id) {
         this.requestService.downloadODSFile(id).
            subscribe(data => {
                saveAs(new Blob([data], { type: '\'application/vnd.oasis.opendocument.spreadsheet\'' }), 
                          id);
                 }, error => {
             this.errorService.displayError(error);
             console.log('here is the error ' + error.toString())
            });
}

角度分量法：

  @GetMapping(value = "/exportods/{id}")
  @ResponseBody
  public ResponseEntity<ByteArrayResource> exportODSFile(@PathVariable  String id )
      throws ObjectNotFoundException, IOException{


    File odsFfile = null;
    ByteArrayResource resource = null;
    HttpHeaders headers = null;

    try {          
      //generating ods file
      odsFfile = dao.exportInvalidationRequest(id);

      Path pathObj = Paths.get(odsFfile.getAbsolutePath());

      resource = new ByteArrayResource(Files.readAllBytes(pathObj));

      headers = new HttpHeaders();
      headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=" + odsFfile.getName());
      headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE);
      headers.add(HttpHeaders.CONTENT_LENGTH, String.valueOf(Files.readAllBytes(pathObj).length));
      headers.add(HttpHeaders.TRANSFER_ENCODING, "binary");

    } catch (ObjectNotFoundException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,"message");
    }  catch (IOException e) {
      throw new ODSExportResourceException(HttpStatus.BAD_REQUEST,
          "message");
    }
    return new ResponseEntity<>(resource, headers, HttpStatus.OK);
  }

@ControllerAdvice
public class ODSExportExceptionHandlerAdvice {
  @ResponseBody
  @ExceptionHandler(ODSExportResourceException.class)
  public ResponseEntity handleException(ODSExportResourceException e) {
    // log exception
    return ResponseEntity.status(e.getHttpStatus()).body(e.getMessage());
  }
}

downloadODSFile(id: string) {
    return this.httpClient.get(`${this.basePath}/exportods/${id}`, {
        responseType: 'arraybuffer'
    });
}

downloadODSFile(id) {
         this.requestService.downloadODSFile(id).
            subscribe(data => {
                saveAs(new Blob([data], { type: '\'application/vnd.oasis.opendocument.spreadsheet\'' }), 
                          id);
                 }, error => {
             this.errorService.displayError(error);
             console.log('here is the error ' + error.toString())
            });
}

为了实现这段代码，我参考了这里提到的anwser：

当我运行应用程序并触发导出时，在理想情况下，会生成并下载文件，但如果在后面触发异常，例如id未引用数据库中的任何行，则会触发ObjectNotFoundException，但我不会收到ControllerAdvice生成的响应。 当触发异常时，如何将ResponseEntity作为JSON处理