angular - JHipster 自定义错误消息翻译

Question

如何使用 Angular UI 翻译 JHipster 应用程序中的自定义错误消息？

我添加了自定义异常处理程序:

    @ExceptionHandler
    default ResponseEntity<Problem> handleSomeBusinessException(final SomeBusinessException exception, final NativeWebRequest request) {

        final Problem problem = Problem.builder()
            .withStatus(UNPROCESSABLE_ENTITY)
            .with("BusinessException", SomeBusinessException .class.getName())
            .with("BusinessMessage", exception.getMessage())
            .build();

        return create(exception, problem, request);
    } 

接下来我修改了alert-error.component.ts

  this.httpErrorListener = eventManager.subscribe('someApp.httpError', (response: JhiEventWithContent<HttpErrorResponse>) => {
      const httpErrorResponse = response.content;
      switch (httpErrorResponse.status) {

        case 422:
          this.addErrorAlert(httpErrorResponse.error.BusinessMessage);
          break;

不幸的是，当我运行应用程序并引发 SomeBusinessException 时，我在 UI 中看到以下内容:

translation-not-found[Some business message related to SomeBusinessException]

您能否告知我可以在哪里翻译我的BusinessMessage？

更新: 我已经检查了 src\main\webapp\i18n\en\error.json 但它绑定(bind)到 http.code，而不是消息本身

Answer 1

这可以使用简单的异常名称来完成。此外，您还可以传递参数，并用 ngx-translate 替换。

首先，您需要在问题中传递自定义参数:

@ExceptionHandler
default ResponseEntity<Problem> handleSomeBusinessException(final SomeBusinessException exception, final NativeWebRequest request) {

    final Problem problem = Problem.builder()
        .withStatus(UNPROCESSABLE_ENTITY)
        .with("businessException", SomeBusinessException.class.getSimpleName())
        .with("parameterKey", "some value goes here")
        .build();

    return create(exception, problem, request);
} 

第二个是AlertErrorComponent的构造函数:

constructor(private alertService: JhiAlertService, private eventManager: JhiEventManager, translateService: TranslateService) {
...
     switch (httpErrorResponse.status) {
        ...
        case 422:
          this.addErrorAlert('', 'business.' + httpErrorResponse.error.businessException, httpErrorResponse.error);
          break;

第三种是提供带参数的翻译(由ngx-translate支持):

src/main/webapp/i18n/en/error.json

{
  "business": {
    "SomeBusinessException ": "Translated text goes here. {{parameterKey}}",
  }
  ...
}

{{parameterKey}} 将被 ngx-translate 替换为“此处有一些值”

因此您将在屏幕上看到以下消息:

Translated text goes here. some value goes here

您还可以查看完整源代码here