我正在使用Angular 5和RXJS 5.5
在我做这样的事情之前
getProjectInfo(id): Observable<any> {
const URL = `${this.API}/${id}`;
return this.http.get(URL)
.pipe(map(res => res)),catchError(this.handleServerError);
}
handleServerError(error: any) {
console.log(error.error || error.json() || error);
return Observable.throw(error.error || error.json() || error || 'Server error');
}
但现在我收到了这个错误
Error:(21,5) TS2322:Type 'UnaryFunction<Observable<{}>,Observable<any>>' is not assignable to type 'Observable<any>'.
Property '_isScalar' is missing in type 'UnaryFunction<Observable<{}>,Observable<any>>'.
我也试过这个
getProjectInfo(id): Observable<any> {
const URL = `${this.API}/${id}`;
return this.http.get(URL)
.pipe(map(res => res)),catchError(err => this.handleError('getProjInfo',URL));
}
private handleError(method: String,URL: string): any {
return (err: any) => {
const errMsg = `error in ${method}() retrieving ${URL}`;
console.log(`${errMsg}:`,err);
if (err instanceof HttpErrorResponse) {
console.log(`status: ${err.status},${err.statusText}`);
}
return Observable.throw(errMsg);
};
}
我究竟做错了什么？
解决方法
请记住您的括号.您返回管道结果和catchEror结果除以,：
return this.http.get(URL) .pipe(map(res => res)),catchError(this.handleServerError);
将一个支架放在自己的位置：
return this.http.get(URL)
.pipe(
map(res => res),catchError(this.handleServerError)
);
