VB.NET 通过 HTTP 发布；构建 PHP 查询

Question

我正在尝试制作一个 post 网站，该网站使用以下模板：

 curl_setopt_array($ch, array(
    CURLOPT_URL => 'http://api.upcdatabase.org/submit/curl.php',
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POSTFIELDS => http_build_query(array(
        'upc' => '0000000000000',
        'mrsp' => '0.00',
        'apikey' => 'YOUR_API_KEY_GOES_HERE',
        'title' => 'Title of product',
        'alias' => 'Title alias',
        'description' => 'Optional lengthy description of product.',
        'unit' => 'Per case'
))));
$server_output = curl_exec($ch);
curl_close($ch);

我发现这个网站可以帮助形成 POST。

http://msdn.microsoft.com/en-us/library/debx8sh9(v=vs.110).aspx?cs-save-lang=1&cs-lang=vb#code-snippet-27

如何使用变量 upc、mrsp、apikey、title... 等查询数组，以便我可以 post 将其发送到网站？

Answer 1

您的主要问题可能是您的 post 数据使用逗号而不是符号作为分隔符。此代码有效，我得到 "OK" 响应：

Imports System.Net
Imports System.Text

Module Module1

Sub Main()
    Dim req As WebRequest = WebRequest.Create("http://api.upcdatabase.org/submit/curl.php")
    req.Method = "POST"
    Dim http As HttpWebRequest = DirectCast(req, HttpWebRequest)
    http.ContentType = "application/x-www-form-urlencoded"
    Dim postData As String = "upc=0111222333449&apikey=YOU_CANT_SEE_MY_KEY&title=TOMATO SAUCE&description=TOMATO SAUCE&mrsp=1.23&unit=Per Case"
    Dim requestBytes As Byte() = Encoding.UTF8.GetBytes(postData)
    req.ContentLength = requestBytes.Length
    Dim reqStream As System.IO.Stream = http.GetRequestStream()
    reqStream.Write(requestBytes, 0, requestBytes.Length)
    reqStream.Close()

    Dim response As WebResponse = http.GetResponse()
    Dim respStream As System.IO.Stream = response.GetResponseStream()
    Dim rdr As System.IO.StreamReader = New IO.StreamReader(respStream)
    Dim status As String = rdr.ReadToEnd()
    Console.WriteLine(status)
    Console.ReadKey()
End Sub

End Module

VB.NET 通过 HTTP 发布；构建 PHP 查询

VB.NET Posting via HTTP; Build PHP Query

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