如何使用 Angular HttpClient 形成带有查询参数数组的 URL
input
ids: string[] = ["1","2","3"]
output
eg: https://localhost:8080/cinemas?ids=1&ids=2&ids=3
只需使用appendAll()并传递{“param”:Array}
let queryParams = new HttpParams();
queryParams = queryParams.appendAll({'ids': ids});
return this.http.get(backendUrl + '/cinemas?' + queryParams.toString());
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