您好，问个问题

[jiayisheji]

您好，我用您这个http之后发现请求2次，我用angular自带http，只有一次请求，这是什么情况

[bangwu]

可以贴出你的请求代码吗？

[jiayisheji]

我的代码按rebirth上面写的，一模一样，不然我也不知道这东西

[greengerong]

应该是你代码问题。贴出来看看吧。 @jiayisheji

[jiayisheji]

@greengerong

定义HomeService

import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import { RebirthHttp, RebirthHttpProvider, GET} from 'rebirth-http';

export abstract class HomeService extends RebirthHttp {

  abstract getArticles(pageIndex, pageSize, keyword?: string): Observable<any>;

}

@Injectable()
export class GithubArticleService extends HomeService {
  constructor(protected http: Http, protected rebirthHttpProvider: RebirthHttpProvider) {
    super();
  }
  getArticles(pageIndex = 1, pageSize = 10, keyword?: string): Observable<any> {
    return this.innerGetArticles()
      .map(res => {
        const result = res.result || [];
        const startIndex = (pageIndex - 1 ) * pageSize;
        return {
          pageSize,
          pageIndex,
          total: result.length,
          result: result.slice(startIndex, startIndex + pageSize)
        };
      });
  }

  @GET('list.json')
  private  innerGetArticles(): Observable<any> {
    return null;
  }
}

export const REBIRTH_ARTICLE_SERVICE_PROVIDERS: Array<any> = [
  {
    provide: HomeService,
    useClass: GithubArticleService
  }
];

调用HomeService

import { Component, OnInit } from '@angular/core';
import { HomeService } from './home.service';

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {

  constructor(private homeService: HomeService) { }

  ngOnInit() {}

  getList() {
    this.homeService.getArticles(1, 10).subscribe(result => {
      console.log(result);
    }, (e) => console.log(e, 'ArticleListComponent error'));
  }

}

[greengerong]

代码看不错具体问题。 你可以chrome调试下。

[jiayisheji]

@greengerong 好的，谢谢

[greengerong]

是不是你说的跨域请求？一个option，一个真实get/post？ @jiayisheji

[jiayisheji]

@greengerong 我是跨域了，请求结果是2个option，2个真实get/post。如果是一个option，一个真实get/post，我就不会有这个疑问了

[greengerong]

恩， 你在调试下看看

[jiayisheji]

嗯，好的