angular的资料很少，并且坑很多，报错也不是很好解决，研究这个花了好几天时间。
首先，先查看自己的anuglar版本是不是4.3.0以上，HttpClient是anuglar4.3中新加入的特性，在package.json中查看
"@angular/animations": "^4.3.0", "@angular/common": "^4.3.0", "@angular/compiler": "^4.3.0", "@angular/core": "^4.3.0", "@angular/forms": "^4.3.0", "@angular/http": "^4.3.0", "@angular/platform-browser": "^4.3.0", "@angular/platform-browser-dynamic": "^4.3.0", "@angular/router": "^4.3.0",
1.在app.module.ts中导入
import { HttpClientModule } from ‘@angular/common/http‘;
并在imports加入：
imports: [ HttpClientModule ]
2.成员模块中加入
import { HttpClientModule } from ‘@angular/common/http‘;
constructor(
private myhttp: HttpClient
) { }
就完了基本的配置。
转自：http://www.cnblogs.com/cxd1008/p/7685789.html
