Angular中带有id参数的Rest api调用

Question

我有一个调用 rest api 的 Angular 应用程序，但该 rest api 数据由它的客户定义：api/incident?customer_id=7 我如何在 api url 或服务中反映这一点？和我的应用程序？我的服务如下：

    import { Injectable } from '@angular/core';
    import { HttpClient, HttpEventType, HttpHeaders, HttpRequest, HttpResponse, HttpErrorResponse } from '@angular/common/http';
    import { HttpClientModule } from '@angular/common/http';
    import { Observable, of, throwError } from 'rxjs';
    import { catchError, retry } from 'rxjs/operators';


    @Injectable({
      providedIn: 'root'
    })
    export class 

nowService {

  serviceApiUrl: string = 'api/incident';

  constructor(
    private http: HttpClient,

  ) { }

  getAll(): Observable<any> {
    return this.http.get<any>(this.serviceApiUrl)
      .pipe(
        catchError(this.handleError)
      );
  }


  private handleError(error: HttpErrorResponse) {
    if (error.error instanceof ErrorEvent) {
      console.log(error.error.message)

    } else {
      console.log(error.status)
    }
    return throwError(
      console.log('Something has happened; Api is not working!'));
  };

}

component.ts

import { Component, OnInit } from '@angular/core';
import { HttpClient, HttpEventType, HttpHeaders, HttpRequest, HttpResponse } from '@angular/common/http';
import {HttpClientModule} from '@angular/common/http';
// Services 
import { nowService } from '../../services/servicenow.service';
import { Incidents } from '../../models/incidents.model';


@Component({
  selector: 'app-service-incident',
  templateUrl: './service-incident.component.html',
  styleUrls: ['./service-incident.component.scss']
})

export class ServiceIncidentComponent implements OnInit {

  public incidents: any; 
  public loading = true;
  public errorApi = false;

  constructor(private service: nowService) {

  }

  ngOnInit() {
    this.service.getAll().subscribe((data) => {
      this.loading = true;
      this.incidents = data.result;
      this.loading = false;
      console.log('Result - ', data);
      console.log('data is received');
    })
  }
}

所以它基于客户 ID 参数。我只是想知道如何做到这一点，因为我以前没有遇到过这个？

谢谢

Answer 1

代码可以如下：

   getAll(customerId): Observable<any> {
  return this.http.get<any>(this.serviceApiUrl + "?customer_id" + customerId )
    .pipe(
    catchError(this.handleError)
  );


 ngOnInit() {
this.service.getAll(this.customerId).subscribe((data) => {
  this.loading = true;
  this.incidents = data.result;
  this.loading = false;
  console.log('Result - ', data);
  console.log('data is received');
})
}

或者你可以使用 HttpParams 类 例子： https://angular.io/api/common/http/HttpParams

   getAll(customerId): Observable<any> {
         const params = new HttpParams("customer_id", customerId)
       return this.http.get<any>(this.serviceApiUrl ,{ params })
    .pipe(catchError(this.handleError));