基于angular2 的 http服务封装的实例代码

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

rush:js;"> /** * 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}
  */
  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|Promise}
  */
  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|Promise}
  */
  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,success: true
  }
  }

}

/**

• 处理请求错误
• @param error
• @returns {void|Promise|Promise|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

rush:js;"> /** * 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

@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
  });
  }

}

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编程之家。