C#实现HTTP上传文件的方法

易采站长站为您分析C#实现HTTP上传文件的方法,包括了发送文件与接收文件的实现代码,具有不错的参考价值,需要的朋友可以参考下    

本文实例讲述了C#实现HTTP上传文件的方法。。具体实现方法如下：

发送文件代码如下：

 

复制代码
/// <summary>
/// Http上传文件
/// </summary>
public static string HttpUploadFile(string url, string path)
{
    // 设置参数
    HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
    CookieContainer cookieContainer = new CookieContainer();
    request.CookieContainer = cookieContainer;
    request.AllowAutoRedirect = true;
    request.Method = "POST";
    string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
    request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
    byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("rn--" + boundary + "rn");
    byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("rn--" + boundary + "--rn");

 

    int pos = path.LastIndexOf("");
    string fileName = path.Substring(pos + 1);

    //请求头部信息 
    StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name="file";filename="{0}"rnContent-Type:application/octet-streamrnrn", fileName));
    byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());

    FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
    byte[] bArr = new byte[fs.Length];
    fs.Read(bArr, 0, bArr.Length);
    fs.Close();

    Stream postStream = request.GetRequestStream();
    postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
    postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
    postStream.Write(bArr, 0, bArr.Length);
    postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
    postStream.Close();