angular5 httpclient的示例实战

从angular 4.3.0 以后的版本开始使用httpclient，替换了之前的http，引用的包路径已经变为了angular/common/http了

一个基础的 httpclient 样例

import { Injectable } from \'@angular/core\';
import { HttpClient, HttpResponse } from \'@angular/common/http\';
import { Observable } from \'rxjs/Observable\';
import { HttpDefaultOptions } from \'./http.default.options\';

@Injectable()
export class Service {

 private static METHOD_DELTE = \'DELETE\';
 private static METHOD_POST = \'POST\';
 private static METHOD_GET = \'GET\';
 private static METHOD_PUT = \'PUT\';

 constructor(private httpClient: HttpClient) {
 }

 /**
  * 将数据上传
  * @param data
  * @param {Function} func
  */
 uploadDataPost(data: any, func: Function) {
  let url = \'/api/test\';
  this.apiPost(url, data)
   .subscribe((response: HttpResponse) => {
    func(response);
   }, error => {
    func(undefined);
   });
 }

 /**
  * 返回json 格式的obj 对象
  * @param url
  * @param body
  * @param urlSearchParams
  * @returns {Observable<{}>}
  */
 apiPost(url, body, urlSearchParams?: any): Observable<{}> {
  let options = {
   body: body ? body : null,
   params: urlSearchParams,
   responseType: \'json\'
  };
  return this.httpClient.request(Service.METHOD_POST, url, options);
 }

 /**
  * 返回一个obj 对象
  * @param url
  * @param urlSearchParams url 的查询参数
  * @returns {Observable<{}>}
  */
 apiGet(url, urlSearchParams?: any): Observable<{}> {
  let options = {
   params: urlSearchParams,
   responseType: \'json\'
  };
  return this.httpClient.request(Service.METHOD_GET, url, options);
 }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。