Angular2、POST响应图错误？

Question

当我从服务器得到良好响应时，我的以下代码可以正常工作

let response = this.http.post(url,sendData).map(res =>res.json());
return response;

但是，一旦我从服务器收到非 JSON 响应，整个应用程序就开始崩溃。

假设 .json() 给出了这个错误 i try/catch.

let response:any = this.http.post(url,sendData);
return response.map((resp)=>{      
      try{
        resp.json();
      }
      catch(Error){
        return *what to do*;
      }

      return resp.json();
    });

完整代码参考

 sendToAPI(sendData,param,option?){

    sendData = JSON.stringify(sendData);
    let url = this.link+param;

    let response:any = this.http.post(url,sendData);        
    return response.map((resp)=>{      
      try{
        resp.json();
      }
      catch(Error){
        ** here ** // need to return a response object
      }
      return resp.json();
    });
  }

What could be the possible way out? When due to some reason API gives a non-JSON parsable error. I should give me an object of this following sort to subscribe to:

{
    status: 0,
    data: [],
    message : "non json response by server"
  }

Answer 1

因此，在您当前的设置中，一种方法是这样的：

let response:any = this.http.post(url,sendData);        
    return response.map((resp)=>{
      let body = {};
      try{
        body = resp.json();
      }
      catch(Error){
        body = {
            status: 0,
            data: [],
            message : "non json response by server"
        };
      }
      return body;
    });

Angular2、POST响应图错误？

Angular 2, POST response map error?

typescript

angular2-services