最近在项目中折腾了下angular2,所以出来跟大家分享，希望有帮助，每个公司业务不一样，按实际情况而定，个人学习心得，不作为标准。
1、定义http-interceptor.service.ts服务，统一处理http请求

/*** 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};}}

2、在每一个模块创建一个service，service定义此模块的所有http数据请求，我这里演示登录模块：login.service.ts

/*** 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},});}
}

3、在component注入servicelogin.service.ts。调用seriveLogin.service.ts服务定义的方法，这里通过login.component.ts演示

/*** 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});}}

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