今天在项目中使用WebClient从应用程序上传文件,应该说这是一个很简单的应用,也就调用一个UploadFile方法而已,然而在实验时却遇到了好几个错误,为此郁闷了一个上午,现在把我尝试的经过记录下来,希望对遇到这类问题的朋友有所帮助!开始我是这样写上传代码的:
/// <summary>
/// 使用WebClient上传文件测试 /// </summary> public class WebClientTest { public static void Main(string[] args) { // Server URL string uriString = "http://localhost/FileUpLoad/002.gif"; // Local Directory File Info string fileName = @"c:\temp\002.gif"; // Create a new WebClient instance. WebClient myWebClient = new WebClient(); Console.WriteLine("Uploading {0} to {1} ",fileName,uriString); // Upload the file to the URL using the HTTP 1.0 POST. byte[] responseArray = myWebClient.UploadFile(uriString,"POST",fileName); // Decode and display the response. Console.WriteLine("\nResponse Received.The contents of the file uploaded are: \n{0}",Encoding.ASCII.GetString(responseArray)); //Waite for User Console.ReadLine(); } }
/// <summary>
/// 使用WebClient上传文件测试 /// </summary> public class WebClientTest { public static void Main(string[] args) { // Server URL string uriString = "http://localhost/FileUpLoad/002.gif"; // Local Directory File Info string fileName = @"c:\temp\002.gif"; // Create a new WebClient instance. WebClient myWebClient = new WebClient(); Console.WriteLine("Uploading {0} to {1} ",fileName,uriString); // Upload the file to the URL using the HTTP 1.0 POST. byte[] responseArray = myWebClient.UploadFile(uriString,"PUT",fileName); // Decode and display the response. Console.WriteLine("\nResponse Received.The contents of the file uploaded are: \n{0}",Encoding.ASCII.GetString(responseArray)); //Waite for User Console.ReadLine(); } }
您可以通过如下的方法实现从win application中upload file 假设上传目录的物理路径为c:\upload,url为http://localhost/upload 1.在IIS中upload虚拟目录属性中的directory security中的anonymous access and authentication control一栏中,点击edit,选中Anonymous access,并在virtual directory一栏选中write属性。 2.将c:\upload目录属性中的Security设置为everyone 3.在程序中使用如下的代码就可以实现file upload WebClient myclient = new WebClient(); myclient.UploadFile ("http://localhost/upload/odbc.ini","PUT","e:\\temp\\ODBC.INI"); ——微软全球技术中心 技术支持 前面所说的这些权限我都已经设置了啊,而且跟这里所说的分毫不差,不可能微软说的也是错误的吧。现在我对自己的机器设置开始有点怀疑了。于是让同事帮我试试,同事机器上竟然上传成功了!现在问题基本上可以确定出在我的机器上,到底哪儿出问题了呢? 既然错误是从服务器上返回的,那就从服务器的IIS开始吧,先允许所有的Web服务扩展。再运行一遍,终于成功了。看来问题就出在了Web服务扩展上了,于是采用排除法,禁止一个测试一遍,这样终于确定了原来是Web服务扩展中的WebDAV惹得祸。 如果你在使用WebClient上传文件的过程中遇到了“远程服务器返回错误: (501) 未实现”这样的错误,记得先把Web服务扩展中的WebDAV修改为允许。现在问题总算解决了,可以松口气了,等等……,问题又来了,我上传的图片文件,然而上传到服务器后却打不开!再次修改代码,这次直接以文件流上传,修改后的代码如下:
/// <summary>
/// 使用WebClient上传文件测试 /// </summary> public class WebClientTest { public static void Main(string[] args) { // Server URL string uriString = "http://localhost/FileUpLoad/2006327143303_Grid1.jpg"; // Local Directory File Info string fileName = @"c:\temp\2006327143303_Grid1.jpg"; // Create a new WebClient instance. WebClient myWebClient = new WebClient(); FileStream fs = new FileStream(fileName,FileMode.Open,FileAccess.Read); BinaryReader br = new BinaryReader(fs); Byte[] postArray = br.ReadBytes(Convert.ToInt32(fs.Length)); Stream postStream = myWebClient.OpenWrite(uriString,"PUT"); if(postStream.CanWrite) { postStream.Write(postArray,0,postArray.Length); } postStream.Close(); fs.Close(); } }
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