C# - WebClient.UploadFile 未接收 POST 数据

本文关键字：POST 数据 WebClient UploadFile | 更新日期: 2023-09-27 18:33:56

我正在尝试编写一个工具将图像批量上传到我的网站，但是在接收（或发送）实际数据到服务器时遇到问题。

我将从一些 C# 代码开始，因为它应该解释我试图做得更好的地方，我可以清楚地表达：

private bool Upload( string LocalFile, int ItemID, string Description, DateTime Date, string Photographer )
    {
        WebClient oWeb = new System.Net.WebClient(); 
        NameValueCollection parameters = new NameValueCollection();
        parameters.Add( "Type", "1" );
        parameters.Add( "ID", ItemID.ToString() );
        parameters.Add( "Desc", Description );
        parameters.Add( "Date", Date.ToString( "yyyy-MM-dd" ) );
        parameters.Add( "Photographer", Photographer );
        oWeb.QueryString = parameters;
        var responseBytes = oWeb.UploadFile( "http://www.teamdefiant.co.uk/moveuploadedfile.php", LocalFile );
        string response = Encoding.ASCII.GetString(responseBytes);
        MessageBox.Show( "Response: 'n'n" + response + "'n'nPost Data: 'n'n" + LocalFile + "'n" + ItemID.ToString() + "'n" + Description + "'n" + Date.ToString("yyyy-MM-dd") + "'n" + Photographer );
        Clipboard.SetText( "Response: 'n'n" + response + "'n'nPost Data: 'n'n" + LocalFile + "'n" + ItemID.ToString() + "'n" + Description + "'n" + Date.ToString("yyyy-MM-dd") + "'n" + Photographer );
        return true;
    }

当我收到响应（如消息框和剪贴板.SetText所示）时，我得到以下数据：

Response:
Upload:
Type:
Size: 0kb
Stored in:



Post Data:
C:'Users'<MyFolder>'Pictures'Website'ExampleImage.png
4
Picture Description
2014-12-10
Photographer

为了完整起见，这里是 php 代码：

<?PHP
   if ($_FILES["myfile"]["error"] > 0)
   {
      echo "Error: " . $_FILES["myfile"]["error"] . "'n";
   }
   else
   {
      echo "Upload: " . $_FILES["myfile"]["name"] . "'n";
      echo "Type: " . $_FILES["myfile"]["type"] . "'n";
      echo "Size: " . ($_FILES["myfile"]["size"] / 1024) . " Kb'n";
      echo "Stored in: " . $_FILES["myfile"]["tmp_name"] . " 'n";
      echo $_POST["Type"] . " 'n";
      echo $_POST["ID"] . " 'n";
      echo $_POST["Desc"] . " 'n";
      echo $_POST["Date"] . " 'n";
      echo $_POST["Photographer"] . " 'n";
   }
?>
我

尝试寻找答案，但无法找到我能理解的工作解决方案。（我还只是在学习 C#。

我在Visual Studio中没有收到任何代码错误，服务器端也没有收到任何POST错误，所以我被难住了。

感谢任何和所有的帮助！

编辑

我尝试直接访问该网页并得到相同的响应，因此看起来没有数据被发送到服务器？？ :(

C# - WebClient.UploadFile 未接收 POST 数据

你的 C# 前端代码没有很少的东西

您需要定义内容类型八位字节流

Client.Headers.Add("Content-Type","binary/octet-stream");

您还需要在上传文件中指定 POST

oWeb.UploadFile ("http://www.teamdefiant.co.uk/moveuploadedfile.php","POST", LocalFile);

试试我在互联网上找到的这个简单的代码，创建一个不同的工作分支并尝试一下，这是更基本的，并且处于工作状态：

PHP 脚本：

<?php
$uploaddir = 'upload/'; // Relative Upload Location of data file
if (is_uploaded_file($_FILES['file']['tmp_name'])) {
$uploadfile = $uploaddir . basename($_FILES['file']['name']);
echo "File ". $_FILES['file']['name'] ." uploaded successfully. ";

if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile)) {
echo "File is valid, and was successfully moved. ";
}
else
print_r($_FILES);
}
else {
echo "Upload Failed!!!";
print_r($_FILES);
}
?>

这是 C# 代码：

System.Net.WebClient Client = new System.Net.WebClient ();
Client.Headers.Add("Content-Type","binary/octet-stream");
byte[] result = Client.UploadFile ("http://your_server/upload.php","POST","C:'test.jpg");
string s = System.Text.Encoding .UTF8 .GetString (result,0,result.Length );
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