我有一個需要與POS終端設備和磁/芯片卡交互的項目。 比方說，每當顧客從我的百貨公司購買商品時，這家商店的員工都會掃描顧客的金融卡並進行支付交易。與POS終端設備和銀行業務交換系統進行互動
對於那些類似的系統，大部分的論壇說，應考慮使用第三方API，如：
但我認爲這些API應該用於那些將進行國際支付處理的系統。至於我，我認爲我的系統不像國際支付處理那麼大，並且會開始作爲國內小型系統工作。
所以我想知道哪個是最好的解決方案以及系統架構如何？
當我閱讀Authorize.Net頁面時，發現信用卡處理的例程。
無論我的項目是大還是小，國際跑步還是國內跑步，我是否需要遵循這整個程序？
我真的需要按照這個程序來使用POS終端設備進行支付嗎？
有一件事我知道的是，ISO 8583是必要的金融消息傳遞協議，因爲大多數銀行交換軟件系統，爲我區，只能使用這些消息的格式。這意味着我不能使用其他消息格式，例如我們的NDC或D912。
Authorize.net非常易於使用。您需要做的處理卡片的方式是發送XML格式的https文章。 Authorize.net開發人員網站上有幾個示例。 只要刷卡，大多數讀卡器模擬鍵盤按下。一刷卡卡類似於此：
'%B5500692805076849^SMITH/STEPHEN A^12041010000000 00969000000?;5500692805076849=12041010000000969?`
然後解析卡號 「5500692805076849」，名爲 「Smith/STEPHEN A」 和到期日期 「1204」 並通過那些在Authorize.net
Private Sub cmdCharge_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdCharge.Click
' By default, this sample code is designed to post to our test server for
' developer accounts: https://test.authorize.net/gateway/transact.dll
' for real accounts (even in test mode), please make sure that you are
' posting to: https://secure.authorize.net/gateway/transact.dll
cmdCharge.Enabled = False
lblResponse.Text = "Processing....."
Application.DoEvents()
Dim post_url
post_url = "https://test.authorize.net/gateway/transact.dll"
Dim post_values As New Dictionary(Of String, String)
'the API Login ID and Transaction Key must be replaced with valid values
post_values.Add("x_login", "XXXXXXX")
post_values.Add("x_tran_key", "XXXXXXXXX")
'post_values.Add("x_test_request", "TRUE")
post_values.Add("x_delim_data", "TRUE")
post_values.Add("x_delim_char", "|")
post_values.Add("x_relay_response", "FALSE")
post_values.Add("x_type", "AUTH_CAPTURE")
post_values.Add("x_method", "CC")
post_values.Add("x_card_num", txtCard.Text)
post_values.Add("x_exp_date", txtExp.Text)
post_values.Add("x_amount", txtAmount.Text)
'post_values.Add("x_description", "Sample Transaction")
post_values.Add("x_first_name", txtFirst.Text)
post_values.Add("x_last_name", txtLast.Text)
'post_values.Add("x_address", "1234 Street")
'post_values.Add("x_state", "WA")
post_values.Add("x_zip", txtZip.Text)
post_values.Add("x_card_code", txt3CV.Text)
' Additional fields can be added here as outlined in the AIM integration
' guide at: http://developer.authorize.net
' This section takes the input fields and converts them to the proper format
' for an http post. For example: "x_login=username&x_tran_key=a1B2c3D4"
Dim post_string As String = ""
For Each field As KeyValuePair(Of String, String) In post_values
post_string &= field.Key & "=" & field.Value & "&"
Next
' post_string = Left(post_string, Len(post_string) - 1)
post_string = post_string.Substring(0, Len(post_string) - 1)
' create an HttpWebRequest object to communicate with Authorize.net
Dim objRequest As HttpWebRequest = CType(WebRequest.Create(post_url), HttpWebRequest)
objRequest.Method = "POST"
objRequest.ContentLength = post_string.Length
objRequest.ContentType = "application/x-www-form-urlencoded"
' post data is sent as a stream
Dim myWriter As StreamWriter = Nothing
myWriter = New StreamWriter(objRequest.GetRequestStream())
myWriter.Write(post_string)
myWriter.Close()
' returned values are returned as a stream, then read into a string
Dim objResponse As HttpWebResponse = CType(objRequest.GetResponse(), HttpWebResponse)
Dim responseStream As New StreamReader(objResponse.GetResponseStream())
Dim post_response As String = responseStream.ReadToEnd()
responseStream.Close()
' the response string is broken into an array
Dim response_array As Array = Split(post_response, post_values("x_delim_char"), -1)
' the results are output to the screen in the form of an html numbered list.
Select Case response_array(0)
Case "1" 'Approved
lblResponse.Text = "Transaction Approved. " & vbCrLf & response_array(4)
Case "2" 'Declined
lblResponse.Text = "Transaction Declined. " & vbCrLf & response_array(3)
Case "3" 'Error
lblResponse.Text = "Transaction Error. " & vbCrLf & response_array(3)
Case "4" 'Held for Review
lblResponse.Text = "Transaction Held. " & vbCrLf & response_array(3)
End Select
' individual elements of the array could be accessed to read certain response
' fields. For example, response_array(0) would return the Response Code,
' response_array(2) would return the Response Reason Code.
' for a list of response fields, please review the AIM Implementation Guide
cmdCharge.Enabled = True
End Sub