如何在Angular2中处理net :: ERR_CONNECTION_REFUSED

问题描述

错误处理显示如何处理错误，如下所示:

error-handling shows how to handle errors as follows:

private handleError (error: Response | any) {
  // In a real world app, we might use a remote logging infrastructure
  let errMsg: string;
  if (error instanceof Response) {
    const body = error.json() || '';
    const err = body.error || JSON.stringify(body);
    errMsg = `${error.status} - ${error.statusText || ''} ${err}`;
  } else {
    errMsg = error.message ? error.message : error.toString();
  }
  console.error(errMsg);
  return Promise.reject(errMsg);
}

我想访问API服务器，但服务器尚未启动.然后我得到了错误:

I'd like to access an API server, but the server hasn't started. Then I got the error:

http://localhost:3000/api/heroes net::ERR_CONNECTION_REFUSED

我需要礼貌地告诉用户API服务器尚未启动.我应该如何处理错误?

I need to tell the user politely that the API server hasn't started. How should I handle the error?

错误响应为:

_body:ProgressEvent
headers:Headers
ok:false
status:0
statusText:""
type:3
url:null

我可以根据回复的状态来处理此问题吗?

Could I handle this according to the status of the response?

推荐答案

//First inject the router in the constructor


private handleError (error: Response | any) {
//Your other codes

if (error.status == 0){ //or whatever condition you like to put
this.router.navigate(['/error']);
}
}

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