将select option数据发送到angular 8中的node js server

Question

我想把select option数据发送到angular中的node js server这里是我的html

        <div class="col-md-4 col-sm-12 col-xs-12">
            <div class="form-group">
              <label for="select1">Zone</label>
              <select #zone class="form-control" id="select1">
                <option disabled="disabled">Select Zone</option>
                <option >zone-1</option>
                <option>zone-2</option>
                <option >zone-3</option>
                <option >zone-4</option>
                <option >zone-5</option>
                <option >zone-6</option>
              </select>
            </div>
          </div>
          <div class="get-btn1">
              <a  (click)="analyticDataSend(zone.value)" class="btn btn-success">Start</a>
            </div>

这是我的ts代码

         analyticDataSend(zone: string) {    

          this.http.post('http://localhost:8012/sendmail', zone).subscribe();
          console.log(zone)
           }

Answer 1

你不能在post请求中发送字符串，它必须是一个json对象。如下图所示：

analyticDataSend(zone: string) {        
    this.http.post('http://localhost:8012/sendmail', {'zoneName':zone}).subscribe();
    console.log(zone)
 }