在Angular - JSON.parse问题中解码http响应

import { Injectable } from '@angular/core';
import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from '@angular/common/http';
import { Observable } from 'rxjs';
import { catchError } from 'rxjs/operators';

@Injectable()
export class JsonParseInterceptor implements HttpInterceptor {
  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    return next.handle(request).pipe(
      catchError(error => {
        if (error instanceof SyntaxError && error.status === 200 && error.statusText === 'OK') {
          // 处理JSON.parse错误
          console.error('Invalid JSON response');
          // 返回一个合适的默认值或者给出错误提示
          return Observable.throw('Invalid JSON response');
        }
        return Observable.throw(error);
      })
    );
  }
}

import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { JsonParseInterceptor } from './json-parse.interceptor';

@NgModule({
  imports: [HttpClientModule],
  providers: [
    { provide: HTTP_INTERCEPTORS, useClass: JsonParseInterceptor, multi: true }
  ]
})
export class AppModule { }