我想从一个Angular组件触发HTTP请求，但我不知道如何向它添加URL参数(查询字符串)。
this.http.get(StaticSettings.BASE_URL).subscribe(
(response) => this.onGetForecastResult(response.json()),
(error) => this.onGetForecastError(error.json()),
() => this.onGetForecastComplete()
)
现在是我的静态设置。BASE_URL就像一个没有查询字符串的URL: http://atsomeplace.com/，但我想让它像http://atsomeplace.com/?var1=val1&var2=val2
如何添加var1，和var2到我的HTTP请求对象作为对象?
{
query: {
var1: val1,
var2: val2
}
}
然后只有HTTP模块将其解析为URL查询字符串。
当前回答
import { Http, Response } from '@angular/http';
constructor(private _http: Http, private router: Router) {
}
return this._http.get('http://url/login/' + email + '/' + password)
.map((res: Response) => {
return res.json();
}).catch(this._handleError);
其他回答
如果您计划发送多个参数。
组件
private options = {
sort: '-id',
select: null,
limit: 1000,
skip: 0,
from: null,
to: null
};
constructor(private service: Service) { }
ngOnInit() {
this.service.getAllItems(this.options)
.subscribe((item: Item[]) => {
this.item = item;
});
}
服务
private options = new RequestOptions({headers: new Headers({'Content-Type': 'application/json'})});
constructor(private http: Http) { }
getAllItems(query: any) {
let params: URLSearchParams = new URLSearchParams();
for(let key in query){
params.set(key.toString(), query[key]);
}
this.options.search = params;
this.header = this.headers();
继续你的http请求，就像@ethemsulan做的那样。
服务器端路由
router.get('/api/items', (req, res) => {
let q = {};
let skip = req.query.skip;
let limit = req.query.limit;
let sort = req.query.sort;
q.from = req.query.from;
q.to = req.query.to;
Items.find(q)
.skip(skip)
.limit(limit)
.sort(sort)
.exec((err, items) => {
if(err) {
return res.status(500).json({
title: "An error occurred",
error: err
});
}
res.status(200).json({
message: "Success",
obj: items
});
});
});
import { Http, Response } from '@angular/http';
constructor(private _http: Http, private router: Router) {
}
return this._http.get('http://url/login/' + email + '/' + password)
.map((res: Response) => {
return res.json();
}).catch(this._handleError);
在最新的Angular 7/8中，你可以使用最简单的方法:-
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
getDetails(searchParams) {
const httpOptions = {
headers: { 'Content-Type': 'application/json' },
params: { ...searchParams}
};
return this.http.get(this.Url, httpOptions);
}
角6
你可以通过使用params传入get调用所需的参数:
this.httpClient.get<any>(url, { params: x });
其中x = {property: "123"}。
对于记录“123”的api函数:
router.get('/example', (req, res) => {
console.log(req.query.property);
})
您可以使用官方文档中的Url参数。
操作:这个httpClient。得到(这个。火，(params: new HttpParams()。集合(“noCover”，noCover)
