我有一个Angular 2服务，它有一个调用Webservice的方法
import { Injectable } from '@angular/core';
import { Headers, Http, RequestMethod, Request, RequestOptions } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/toPromise';
import 'rxjs/add/observable/of';
private setHeader(): Headers {
let headers = new Headers();
headers.append('Content-Type', 'application/json');
return headers;
}
private async callService(service: string, request: any): Promise<any> {
var requestoptions = new RequestOptions({
method: RequestMethod.Post,
url: this.urlLit + service,
headers: this.setHeader(),
body: request != null ? JSON.stringify(request) : null,
withCredentials: true
})
let result = await this.http.request(new Request(requestoptions))
.map(res => {
if (res) {
if (res.status === 201) {
return res.json().d
}
else if (res.status === 200) {
return res.json().d
}
}
})
.catch((error: Response) => {
if (error.status === 401) {
return Observable.throw(new Error(error.status.toString()));
}
else
return Observable.throw(new Error(error.status.toString()));
}
})
.toPromise();
}
问题是在catch块中，响应不包含error.status，但是在map块中它会发生：
我试图改变“http.request”用“http.post”替换它，但我有相同的结果 .
我该怎么做来捕获错误代码？
非常感谢！！