如何在angular2中设置内容类型和接受?
我正在尝试在头中发送内容类型(application/json)的post call,但对于某些季节,它不会发送,它总是发送text/plain;charset=内容类型中的UTF-8当我尝试进行REST服务调用时,我得到了415不支持的媒体类型。我想我需要正确设置类型和内容类型,因为它没有从代码中设置我的信息。下面是头请求
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding
gzip, deflate
Accept-Language
en-US,en;q=0.5
Content-Length
13
Content-Type
text/plain; charset=UTF-8
Host
enrova.debug-zone.com:8000
Origin
http://localhost:8000
Referer
http://localhost:8000/add
User-Agent
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:39.0) Gecko/20100101 Firefox/39.0
代码在下面
import {Component, View} from 'angular2/angular2';
import { Inject} from 'angular2/di';
import {Http} from 'angular2/http';
export class AchievementsService {
constructor( @Inject(Http) private http: Http) {
}
getAchievementsOfType(type: string) : any {
var path = '/api/achievements/' + type;
return this.http.get(path);
}
getAllAchievements() : any {
var path = '/api/achievements';
return this.http.get(path);
}
addAnAchievement(newAchievement) {
//var path = '/api/achievements';
var path = 'http://test.com:8000/branch';
return this.http.post('http://test.com:8000/branch', JSON.stringify(newAchievement),{
headers: { 'Content-Type': 'application/json; charset=utf-8'} });
}
**Calling Class**
import {Component, View} from 'angular2/angular2';
import { _settings } from '../../settings'
import {FormBuilder, Validators, formDirectives, ControlGroup} from 'angular2/forms';
import {Inject} from 'angular2/di';
import {Router} from 'angular2/router';
import {AchievementsService} from '../../services/achievementsService';
@Component({
selector: 'add',
injectables: [FormBuilder]
})
@View({
templateUrl: _settings.buildPath + '/components/add/add.html',
directives: [formDirectives]
})
export class Add {
addAchievementForm: any;
constructor( @Inject(FormBuilder) private formBuilder: FormBuilder,
@Inject(Router) private router: Router,
@Inject(AchievementsService) private achievementsService: AchievementsService) {
this.addAchievementForm = formBuilder.group({
name: ['']
});
}
// This is the funtion that call post call written in achievementsService.ts
addAchievement() {
this.achievementsService.addAnAchievement(this.addAchievementForm.value)
.map(r => r.json())
.subscribe(result => {
this.router.parent.navigate('/');
});
}
}
这里有一个更干净的方法,写在Angular2文档里(https://angular . io/docs/ts/latest/guide/server-communication . html)。
import {Headers, RequestOptions} from 'angular2/http';
let body = JSON.stringify({ 'foo': 'bar' });
let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });
return this.http.post(url, body, options)
.map(res => res.json().data)
.catch(this.handleError)
请注意,我认为这仅是POST查询所必需的。
首先,您使用了来自angular2/angular2
的不正确导入,现在angular2处于测试阶段,因此几乎所有导入都已更改。读出所有导入列表的答案。
https://stackoverflow.com/a/34440018/5043867
然后,根据我的理解,你想使用REST Api调用Post请求,你想发送< code > content type = ' application/JSON ' ,所以你必须通过将它附加到< code>Header来发送它。我发布了使用Header来使用内容类型的示例,如下所示。
import {Component, View, Inject} from 'angular2/core';
import {Http} from 'angular2/http';
PostRequest(url,data) {
this.headers = new Headers();
this.headers.append("Content-Type", 'application/json');
this.headers.append("Authorization", 'Bearer ' + localStorage.getItem('id_token'))
this.requestoptions = new RequestOptions({
method: RequestMethod.Post,
url: url,
headers: this.headers,
body: JSON.stringify(data)
})
return this.http.request(new Request(this.requestoptions))
.map((res: Response) => {
if (res) {
return [{ status: res.status, json: res.json() }]
}
});
}
我假设使用< code>PostRequest作为方法名的虚拟示例。有关HTTP和REST API调用的更多细节,请参考这里:https://stackoverflow.com/a/34758630/5043867
对于Angular 5.2.9版本
import { HttpHeaders } from '@angular/common/http';
const httpOptions = {
headers: new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': 'my-auth-token'
})
};
return this.http.post(url, body, httpOptions)
.map(res => res.json().data)
.catch(this.handleError)