# 8.1.与服务器通讯

## Http通讯

了解angular的Http服务 发送http请求 处理http响应

url method header

httpModule

```typescript
dataSource:Observable<any>;

products:Array<any>=[];

construction(private http:Http){
let myHeaders：Headers=new Headers();
myHeaders:append("Authorization","Basic 123456")
    this.dataSource=this.http.get('/products',{headers:myHeaders})
    .map((res)=>res.json());
}

this.dataSource.subscribe(
(data)=>{
    this.products=res.json
})
```

proxy.conf.json

```javascript
{
    "/api":{
        "target":"http://localhost:8000"
    }
}
```

package.json

```javascript
"start":"ng serve --proxy-config proxy.conf.json"
```

使用 | async 管道 可以代替订阅


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