用Angular2 http捕获api 404响应

Question

如果失败,我有api返回400或404错误.

当我运行http.get方法时,它不会捕获订阅错误并抛出错误.

Http.get(`api/path/here`).map(res => res.json()).subscribe(
            data => console.log(data),
            error => console.log(error)
        );

以下是我得到的错误

Answer 1

您也可以使用catch运算符

http.get(`api/path/here`)
    .map(res => res.json())
    .catch(
        err => {
          // handle errors
        })
    .subscribe(
        data => console.log(data)
    );

Answer 2

.subscribe(res=>{
    this.data=res;
    console.log('bye');
 },
 (err)=>console.log(err),
 ()=>console.log("Done")
 );

试试这种方式.