Question

 import {Injectable} from '@angular/core';
 import {HttpClient, HttpHeaders, HttpParams} from 
 '@angular/common/http';
 import {Observable} from 'rxjs/Observable';
 import 'rxjs/add/operator/catch';
 import 'rxjs/Rx';

 import {Meter, HatItResponseModel} from '../_models/index';
 import {InitHatResponseModel, MeterInfoResponseModel} from 
 '../_models/requestresp.model';
 import {HttpErrorResponse} from '@angular/common/http/src/response';
 import {AuthenticationService} from './authentication.service';
 import {environment} from '../../environments/environment';

@Injectable()
export class DaqService {
 private hatItUrl = environment.AMICommunicationServiceUrl;
 private versionExt = 'hat/v3/'
 constructor(private http: HttpClient,
          private authService: AuthenticationService) {
}

initDaqMeterHat(meter: Meter) {

if (this.authService.isUserAuthenticated()) {
  const url = this.hatItUrl +  '/meter';

  const params = new HttpParams()

  // Auth Parameters
    .set('uid', this.authService.username)

    //  Hat Options
    .set('meterSerialNum', meter.MeterNumber)
    .set('communicationStatus', 
     String(meter.CommunicationStatusChecked))
    .set('lineSideVoltage', String(meter.LineSideChecked))
    .set('loadSideVoltage', String(meter.LoadSideChecked))
    .set('connectionStatus', String(meter.MeterStatusChecked))
    .set('tsp', String(new Date()));

  return this.http.post<InitHatResponseModel>(url, null, {
       params: params
     }).catch(this.handleInitError);
   }
}

     getDaqMeterResults(meter: Meter) {
     const url = this.hatItUrl + 'hatit/result/';

     const params = new HttpParams()
     .set('token', String(meter.pingItResponse.token))
     .set('tsp', String(new Date()));
      return this.http.get<hatItResponseModel>(url, {
       params: params
      }).catch(this.handleResultsError);
  }

   getVersion() {
   const url = this.hatItUrl + this.versionExt + 'hatit/version';

const params = new HttpParams()
    .set('landId', this.authService.username)
    .set('domain', 'NAM');
    return this.http.get<string>(url, {
    params: params
  });
}

        private handleInitError(error: HttpErrorResponse | any) {
          const meterInfoResponse: MeterInfoResponseModel = new 
          MeterInfoResponseModel();
          meterInfoResponse.errorMessage = error.error;
          const hatItInitResponse: InitHatResponseModel = new 
          InitPingResponseModel(meterInfoResponse, 0);
          return Observable.of(pingItInitResponse);
      }

     private handleResultsError(error: HttpErrorResponse | any) {
     const hatItResponse: HatItResponseModel = new 
     HatItResponseModel(0);
     hatItResponse.meterInfo.errorMessage = error.error;
     return Observable.of(pingItResponse);
     }

  }

为什么我收到此错误？

    HttpErrorResponse {headers: HttpHeaders, status: 400, statusText: 
    "OK", url: "https://emp-dev-api.duke- 
      energy.com/hat/v1/hatit/version?landId=somename&domain=NAM", ok: 
      false, …
      error:
      error:"Bad Request"exception:"org.springframework.web.bind.
      MissingServletRequestParameterException"
      message:"Required String parameter 'lanId' is not present"
      path:"hatit/version" status:400 timestamp :1525301325947

请帮忙！我没有看到我在这里做错了什么，但我确信我可能会弄错，请帮忙！我一直收到错误，错误也无法读取未定义的长度属性。但它只在我构建时才这样做。所以我不确定为什么！如果有人看到这些错误，请随时提供帮助！

Angular 5：错误：“org.springframework.web.bind.MissingServletRequestParameterException”

0 个答案: