基于angular2 的 http服务封装的实例代码

/** * name:http服务 * describe:对http请求做统一处理 * author:Angular那些事  * date:2017/6/3 * time:11:29 */import {Injectable}    from '@angular/core';import {Http, Response}   from '@angular/http';import 'rxjs/add/operator/toPromise';@Injectable()export class HttpInterceptorService { constructor(private http: Http) { } /** * 统一发送请求 * @param params * @returns {Promise<{success: boolean, msg: string}>|Promise<R>} */ public request(params: any): any { if (params['method'] == 'post' || params['method'] == 'POST') {  return this.post(params['url'], params['data']); } else {  return this.get(params['url'], params['data']); } } /** * get请求 * @param url 接口地址 * @param params 参数 * @returns {Promise<R>|Promise<U>} */ public get(url: string, params: any): any { return this.http.get(url, {search: params})  .toPromise()  .then(this.handleSuccess)  .catch(res => this.handleError(res)); } /** * post请求 * @param url 接口地址 * @param params 参数 * @returns {Promise<R>|Promise<U>} */ public post(url: string, params: any) { return this.http.post(url, params)  .toPromise()  .then(this.handleSuccess)  .catch(res => this.handleError(res)); } /** * 处理请求成功 * @param res * @returns {{data: (string|null|((node:any)=>any) */ private handleSuccess(res: Response) { let body = res["_body"]; if (body) {  return {  data: res.json().content || {},  page: res.json().page || {},  statusText: res.statusText,  status: res.status,  success: true  } } else {  return {  statusText: res.statusText,  status: res.status,  success: true  } } } /** * 处理请求错误 * @param error * @returns {void|Promise<string>|Promise<T>|any} */ private handleError(error) { console.log(error); let msg = '请求失败'; if (error.status == 400) {  console.log('请求参数正确'); } if (error.status == 404) {  console.error('请检查路径是否正确'); } if (error.status == 500) {  console.error('请求的服务器错误'); } console.log(error); return {success: false, msg: msg}; }}

/** * name:登录服务 * describe:请输入描述 * author:Angular那些事 * date:2017/6/1 * time:00:13 */import {Injectable}    from '@angular/core';import {HttpInterceptorService} from 'app/commons/service/http-interceptor.service'@Injectable()export class LoginService { constructor(private httpInterceptorService: HttpInterceptorService) { } /** * 登陆功能 * @param params * @returns {Promise<{}>} */ login(userName: string, passWord: string) { return this.httpInterceptorService.request({  method: 'POST',  url: 'http://119.232.19.182:8090/login',  data: {  loginName: userName,  password: passWord  }, }); } /** * 注册 * @param user * @returns {any} */ reguster(user: any) { return this.httpInterceptorService.request({  method: 'POST',  url: 'http://119.232.19.182:8090/reguster',  data: {  user: user  }, }); }}

/** * name:登录组件 * describe:请输入描述 * author:Angular那些事 * date:2017/6/1 * time:00:30 */import {Component} from '@angular/core'import {LoginService} from './login.service'@Component({ selector: 'login', templateUrl: './login.component.html', providers: [LoginService],})export class LoginComponent { private userName: string; private passWord: string; constructor(private loginService: LoginService) { } /** * 登录 */ toLogin() { this.loginService.login(this.userName, this.passWord).then(result => {  console.log(result);//打印返回的数据 }); }}