我有nodejs服务器监听&等待帖子请求http://localhost:3000/api/updateLocation
服务器使用PostMan进行JSON后期请求测试,一切正常,nodejs输出“获得数据”。控制台。但Angular2似乎并没有向服务器发送数据。Screenshot PostMan
问题是什么?
NodeJS server.js:
api.post('/updateLocation', function(req, res){
//res.send(req.body);
console.log('Got data');
});
Ionic 2 home.ts:
import {Component} from '@angular/core';
import {NavController} from 'ionic-angular';
import {Service} from '../../service';
@Component({
templateUrl: 'build/pages/home/home.html',
providers: [Service]
})
export class HomePage {
constructor(private navCtrl: NavController, service: Service) {
setInterval( ()=> {
service.sendLocation({ x: '46.303344', y: '28.655268' });
}, 1000);
}
}
service.ts:
import {Injectable} from '@angular/core';
import {Http, Headers} from '@angular/http';
@Injectable()
export class Service {
http : any;
url : string = 'http://localhost:3000/api/updateLocation';
constructor(http: Http){
this.http = http;
}
sendLocation(location){
let body = JSON.stringify(location);
let headers = new Headers();
headers.append('Content-Type', 'application/json');
return this.http.post(this.url, body, { headers });
}
}
答案 0 :(得分:5)
您需要订阅http操作,否则请求实际上不会被触发。在使用它之前它仍然是“冷的”。
如果您的api返回json响应,这将起作用,例如:
this.http.post(this.url, body, { headers }).subscribe(
data => {
console.log(data.json());
}
);
答案 1 :(得分:0)
问题解决了:
1)导入Rxjs / Rx
2)将标题更改为urlencoded
3)将函数sendLocation修改为this(添加了subscribe()方法):
sendLocation(location){
let body = JSON.stringify(location);
let headers = new Headers();
headers.append('Content-Type', 'application/x-www-form-urlencoded');
this.http.post(this.url, body, {headers: headers}).subscribe();
}