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基于angular2 的 http服務(wù)封裝的實(shí)例代碼

更新時(shí)間：2017年06月29日 09:33:55 作者：小處成就大事

這篇文章主要介紹了基于angular2 的 http服務(wù)封裝實(shí)例代碼，

最近在項(xiàng)目中折騰了下angular2,所以出來(lái)跟大家分享，希望有幫助，每個(gè)公司業(yè)務(wù)不一樣，按實(shí)際情況而定，個(gè)人學(xué)習(xí)心得，不作為標(biāo)準(zhǔn)。

1、定義http-interceptor.service.ts服務(wù)，統(tǒng)一處理http請(qǐng)求

/**
 * name:http服務(wù)
 * describe:對(duì)http請(qǐng)求做統(tǒng)一處理
 * 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) {
 }

 /**
 * 統(tǒng)一發(fā)送請(qǐng)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請(qǐng)求
 * @param url 接口地址
 * @param params 參數(shù)
 * @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請(qǐng)求
 * @param url 接口地址
 * @param params 參數(shù)
 * @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));
 }

 /**
 * 處理請(qǐng)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
  }
 }

 }

 /**
 * 處理請(qǐng)求錯(cuò)誤
 * @param error
 * @returns {void|Promise<string>|Promise<T>|any}
 */
 private handleError(error) {
 console.log(error);
 let msg = '請(qǐng)求失敗';
 if (error.status == 400) {
  console.log('請(qǐng)求參數(shù)正確');
 }
 if (error.status == 404) {

  console.error('請(qǐng)檢查路徑是否正確');
 }
 if (error.status == 500) {
  console.error('請(qǐng)求的服務(wù)器錯(cuò)誤');
 }
 console.log(error);
 return {success: false, msg: msg};

 }

}

2、在每一個(gè)模塊創(chuàng)建一個(gè)service，service定義此模塊的所有http數(shù)據(jù)請(qǐng)求，我這里演示登錄模塊：login.service.ts

/**
 * name:登錄服務(wù)
 * describe:請(qǐng)輸入描述
 * 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) {
 }

 /**
 * 登陸功能
 * @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
  },
 });

 }

 /**
 * 注冊(cè)
 * @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。調(diào)用seriveLogin.service.ts服務(wù)定義的方法，這里通過(guò)login.component.ts演示

/**
 * name:登錄組件
 * describe:請(qǐng)輸入描述
 * 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) {
 }

 /**
 * 登錄
 */
 toLogin() {
 this.loginService.login(this.userName, this.passWord).then(result => {
  console.log(result);//打印返回的數(shù)據(jù)
 });
 }

}

以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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