无法从Angular服务获取HTTP响应代码
在我的项目中,我使用Angular 4作为前端,Django REST框架(DRF)作为后端。从DRF端,我以响应元组的形式返回响应JSON和HTTP响应代码无法从Angular服务获取HTTP响应代码,angular,typescript,django-rest-framework,angular-services,angular4-httpclient,Angular,Typescript,Django Rest Framework,Angular Services,Angular4 Httpclient,在我的项目中,我使用Angular 4作为前端,Django REST框架(DRF)作为后端。从DRF端,我以响应元组的形式返回响应JSON和HTTP响应代码Response(data=vJSON,status=vStatus),从视图函数(如GET/PUT/POST等)返回 问题是,从角度来看,我无法单独提取HTTP响应代码&响应JSON。这是我需要的,因为如果HTTP代码不是200或201,HTTP响应代码可以帮助我在UI端显示错误消息,这是我无法做到的 我只从服务函数返回到组件函数的响应中
Response(data=vJSON,status=vStatus)
,从视图函数(如GET
/PUT
/POST
等)返回
问题是,从角度来看,我无法单独提取HTTP响应代码&响应JSON。这是我需要的,因为如果HTTP代码不是200或201,HTTP响应代码可以帮助我在UI端显示错误消息,这是我无法做到的
我只从服务函数返回到组件函数的响应中获取JSON部分。那么,如何分别获取HTTP代码和响应JSON呢
代码如下:-
视图.py
from rest_framework.response import Response
from rest_framework import status
..
..
def get(self, request, format = None):
vJSON = {}
try:
vHTTPStatus = status.HTTP_200_OK
# All logics are here
..
..
except Exception as e:
vHTTPStatus = status.HTTP_400_BAD_REQUEST
finally:
return Response(data=vJSON, status=vHTTPStatus)
app.service.ts
import {Observables} from 'rzjs/Observable';
import {HttpClient, HttpParams} from '@angular/common/http';
export class AppService{
private _URL: string;
constructor(private _httpConn: HttpClient){
this._URL = 'http://xx.xx.xx.xxx/8000/myapi/';
}
getResponse(pParams){
return this._httpConn.get(_URL, {params: pParams});
}
}
app.component.ts[在下面代码中的注释部分,我已经提到了我的要求]
import {AppService} from ./app.service;
import {HttpParams} from '@angular/common/http';
export class AppComponent {
textAreaValue: string;
constructor(private _myService: AppService){
this.textAreaValue = "";
}
fetchData(): void{
let vSearchParam = new HttpParams();
vSearchParam = vSearchParam.append('id', '1000001');
this._myService.getResponse(vSearchParam).subscribe(
response => {
..
/* Here are the logics how to use the response JSON */
console.log(response);
..
..
/* This is what I want
if (response.status != 200) {
this.displayError("There is a connection issue!");
this.textAreaValue = "Unable to show records!";
}
else{
this.textAreaValue = response.data['value'];
}
*/
}
);
}
}
应设置观察值: 因此,在您的服务方法中:
getResponse(pParams){
return this._httpConn.get(_URL, {params: pParams, observe: 'response'});
}
在您的组件中:
this._myService.getResponse(vSearchParam).subscribe(
(response: HttpResponse<any>) => {
console.log(response.status);
}
);
this.\u myService.getResponse(vSearchParam).subscribe(
(响应:HttpResponse对象。
您可以找到完整的指南@jornsharpe谢谢。谢谢@Rhino的帮助和链接。