英文:
httpheaders not set in angular 9 get?
问题
在Angular 9中：
const headers = new HttpHeaders()
.set('Content-Type', 'application/json; charset=utf-8')
.set('Authorization', this.getToken());
return this.httpClient.get(url, { headers: headers }).pipe(catchError(this.handleError));
无法连接到HttpHeaders。为什么在GET、POST、PUT、DELETE调用中未附加头部？
英文:
In Angular 9
const headers = new HttpHeaders()
.set('Content-Type', 'application/json; charset=utf-8')
.set('Authorization', this.getToken());
return this.httpClient.get(url,{headers:headers}).pipe(catchError(this.handleError));
can't connect httpheaders. headers not attached with get post put delete call why ?
答案1
得分: 2
以下是正确的语法：
const httpOptions = new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': this.getToken()
});
this.httpClient.get(url, httpOptions).pipe(catchError(this.handleError));
英文:
Here is the correct syntax :
const httpOptions = new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': this.getToken()
});
this.httpClient.get(url, httpOptions).pipe(catchError(this.handleError));
答案2
得分: -1
你可以尝试这样做：
let headers = new HttpHeaders()
headers = headers.set('Content-Type', 'application/json; charset=utf-8')
headers = headers.set('Authorization', this.getToken())
return this.httpClient.get(url, { headers: headers }).pipe(catchError(this.handleError))
由于httpheader和httpparams在性质上是不可变的，所以将其分配给返回的对象应该可以工作。
英文:
You can try this:-
let headers = new HttpHeaders()
headers=headers.set('Content-Type', 'application/json; charset=utf-8')
headers=headers.set('Authorization', this.getToken());
return this.httpClient.get(url,{headers:headers}).pipe(catchError(this.handleError));
Since httpheader and httpparams are kinda immutable in nature so assiging it to the returned object should work.
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