Question

我对API进行了Http调用，该API返回了一些数据。数据如下：

Sub fileSave()
'
Dim newFileName As String, originalFileName As String, fileSaveName As String, fileNamePathSaved As String, fileNameSaved As String
Dim response As VbMsgBoxResult, currentRoute As String
'
ThisWorkbook.RefreshAll
ActiveWorkbook.Save ' save the current workbook before messing with it
Application.DisplayAlerts = False ' turns off alerts and messages
' Save file name and path into a variable
originalFileName = ActiveWorkbook.FullName ' gets the fullname with path
' originalFilePath = ActiveWorkbook.Path ' grabs the current path

Dim usingReplace As String
usingReplace = Replace(originalFileName, ".xlsm", ".xlsx")
ActiveWorkbook.SaveAs Filename:=usingReplace, FileFormat:=xlOpenXMLWorkbook
fileNameSaved = ActiveWorkbook.Name ' grabs the name of the saved file

Workbooks.Open Filename:=originalFileName 'reopens the original workbook file
Application.DisplayAlerts = True ' turns the alerts and messages back on


'provide an opportinity to clear the incident report flag
' If incidentFiled = True Then response = MsgBox("Do you want to clear the Incident Report?", vbInformation + vbOKCancel, "Incident Report Form")
If response = vbOK Then incidentFiled = False
'close the newly made file

' Workbooks(fileNameSaved).Close True ' sub terminates at this point
'
End Sub

现在，问题出在数据库中的ID，就像ID： 7728806673365567677 因此，有效ID的后3位数字为677，但是从API返回的数据包含000，因此：

有效期：7728806673365567677

无效：7728806673365567000

我想知道这是什么问题。也许ID可以是字符串而不是数字吗？

谢谢您的建议。

编辑：现在我看到后端中的数据实际上是一个字符串： “ 7728806673365567000” 但是Http调用将其更改为Number吗？

Answer 1

它与NativeScript无关。您可以将其称为JavaScript的限制，已超出JavaScript支持的最大安全整数限制。如果您也在浏览器环境中尝试此操作，结果将相同。

因此，正如您已经提到的，使用String而不是Number可以解决此问题。

Answer 2

基于

Number.MAX_SAFE_INTEGER

9007199254740991

var d=7728806673365567677 ;

未定义

d.toString()

“ 7728806673365567000”

typeof d

“数字”

Number.isSafeInteger(7728806673365567677 )

false

Number.isSafeInteger（7728806673365567）

true

如此

var data = {
"id": 7728806673365567677,
"title": "Status Unknown"
};

data.id;

“ 7728806673365567677”

和

var data = {
"id": "7728806673365567677",
"title": "Status Unknown"
};

data.id;

7728806673365567000

例如php (click to try the code)

$data= array(
    'id' => 7728806673365567677,
    'title' => 'Status Unknown',
);

echo json_encode($data,JSON_NUMERIC_CHECK);

应解决此问题并返回

{
"id": "7728806673365567677",
"title": "Status Unknown"
};

您需要安装一个名为“ php5-json”的软件包

Answer 3

是的，您应该以字符串形式威胁它。它大于最大值。 JS 2 ^ 53-1或9007199254740991中可能的数字。

由于其被截断，所以取出的数字被零代替。我不知道这种特定行为来自何处，但这似乎正在发生。

请参阅： What is JavaScript's highest integer value that a number can go to without losing precision?

Answer 4

您可以使用BigInteger NPM模块来解决此问题，也可以使用一些解析器来解决此问题，请参见

Stackoverflow Question

Nativescript转换长数字-最后3位数字更改为000

4 个答案: