router.post运行两次

Question

我正在Angular中读取JSON文件，从中提取部分内容，然后将其保存到mongodb中。发布请求运行两次，而我只调用一次。

因此，结果在集合中，我两次都有所有条目！

这里是我发送请求的角度：

WhileReadingRecords;
DateVar Array Holidays;
DateVar Target:=Date({DATE_RECEIVED}); 
NumberVar Add; 
NumberVar Added := 0;

if {METADATA_REPOSITORY.FIELD_VARCHAR_16} = "Test_1" then

    NumberVar Add = 28;
    WHILE Added < Add
    Do (target := target +1;
        if dayofweek (target) in 2 to 6 and not (target in holidays)
            then Added:=Added+1
            else Added:=Added);
        Target

else if {ORDTASK.TESTGROUPNAME} = "Test_2" then

    NumberVar Add =14;
    WHILE Added < Add
    Do (target := target +1;
        if dayofweek (target) in 2 to 6 and not (target in holidays)
            then Added:=Added+1
            else Added:=Added);
        Target

//else 

    NumberVar Add = DateAdd("d", Tonumber({TESTS.DURATION}), {CENTRALRECEIVING.DATE_RECEIVED});
    WHILE Added < Add
    Do (target := target +1;
        if dayofweek (target) in 2 to 6 and not (target in holidays)
            then Added:=Added+1
            else Added:=Added);
        Target

这是保存功能以调用服务

getNVD()  {
   this.readJsonService.getNVDJSON().subscribe(response=>{
     if(response){
        for(let i=0; i <  response['CVE_Items'].length; i++)
        {
            this.INVDStructure.push({
              ID:  response['CVE_Items'][i]['cve'].CVE_data_meta.ID,
              affects:  response['CVE_Items'][i].cve.affects,
              impact:  response['CVE_Items'][i].impact
            })
        }
  this.SaveNVD();

  }//if
   else {console.log("error in getting the NVD ");}
 });
}

这是服务：

SaveNVD(){
  this.submitService.createNVDDB(this.INVDStructure).subscribe(response => {
    if (response) {
        console.log(response.body['message'] );
    }
  });
}

这是发布请求：

createNVDDB(s):Observable<HttpResponse<INVDStructure>> {
  return this.http.post<INVDStructure>(this.domain+'/nvdGenerate',s, {observe: 'response'})
}

如所见，我叫过一次。我不知道为什么要运行两次。我们将不胜感激。