C# 向服务器上传文件（客服端winform、服务端web）
标签：byte prot comment minimum seconds uil imp odi asp
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首先写客服端，winform模拟一个post提交：
///
/// 将本地文件上传到指定的服务器(HttpWebRequest方法)
///
/// 文件上传到的服务器
/// 要上传的本地文件（全路径）
/// 文件上传后的名称
/// 上传进度条
/// 成功返回1，失败返回0
private int Upload_Request2(string address, string fileNamePath, string saveName, ProgressBar progressBar)
{
int returnValue = 0; // 要上传的文件
FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fs); //时间戳
string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n"); //请求头部信息
StringBuilder sb = new StringBuilder();
sb.Append("--");
sb.Append(strBoundary);
sb.Append("\r\n");
sb.Append("Content-Disposition: form-data; name=\"");
sb.Append("file");
sb.Append("\"; filename=\"");
sb.Append(saveName);
sb.Append("\";");
sb.Append("\r\n");
sb.Append("Content-Type: ");
sb.Append("application/octet-stream");
sb.Append("\r\n");
sb.Append("\r\n");
string strPostHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader); // 根据uri创建HttpWebRequest对象
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
httpReq.Method = "POST"; //对发送的数据不使用缓存
httpReq.AllowWriteStreamBuffering = false; //设置获得响应的超时时间（300秒）
httpReq.Timeout = 300000;
httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
long fileLength = fs.Length;
httpReq.ContentLength = length;
try
{
progressBar.Maximum = int.MaxValue;
progressBar.Minimum = 0;
progressBar.Value = 0;
//每次上传4k
int bufferLength = 4096;
byte[] buffer = new byte[bufferLength]; //已上传的字节数
long offset = 0; //开始上传时间
DateTime startTime = DateTime.Now;
int size = r.Read(buffer, 0, bufferLength);
Stream postStream = httpReq.GetRequestStream(); //发送请求头部消息
postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
while (size > 0)
{
postStream.Write(buffer, 0, size);
offset += size;
progressBar.Value = (int)(offset * (int.MaxValue / length));
TimeSpan span = DateTime.Now - startTime;
double second = span.TotalSeconds;
lblTime.Text = "已用时：" + second.ToString("F2") + "秒";
if (second > 0.001)
{
lblSpeed.Text = "平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒";
}
else
{
lblSpeed.Text = " 正在连接…";
}
lblState.Text = "已上传：" + (offset * 100.0 / length).ToString("F2") + "%";
lblSize.Text = (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M";
Application.DoEvents();
size = r.Read(buffer, 0, bufferLength);
}
//添加尾部的时间戳
postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
postStream.Close(); //获取服务器端的响应
WebResponse webRespon = httpReq.GetResponse();
Stream s = webRespon.GetResponseStream();
//读取服务器端返回的消息
StreamReader sr = new StreamReader(s);
String sReturnString = sr.ReadLine();
s.Close();
sr.Close();
if (sReturnString == "Success")
{
returnValue = 1;
}
else if (sReturnString == "Error")
{
returnValue = 0;
}
}
catch
{
returnValue = 0;
}
finally
{
fs.Close();
r.Close();
} return returnValue;
}
参数说明如下：
address：接收文件的URL地址，如：http://localhost/UploadFile/Save.aspx
fileNamePath：要上传的本地文件，如：D:\test.rar
saveName：文件上传到服务器后的名称，如：200901011234.rar
progressBar：显示文件上传进度的进度条。
接收文件的WebForm添加一个Save.aspx页面，Load方法如下：
protected void Page_Load(object sender, EventArgs e)
{
if (Request.Files.Count > 0)
{
try
{
HttpPostedFile file = Request.Files[0];
//string filePath = "C:\\Documents and Settings\\Administrator\\桌面\\2\\" + file.FileName;//this.MapPath("UploadDocument")
string filePath = "D:\\SourceSafe\\testupform\\" + file.FileName;
file.SaveAs(filePath);
Response.Write("Success");
}
catch
{
Response.Write("Error");
}
}
else
{
Response.Write("Error1");
}
}
同时需要配置WebConfig文件的httpRuntime 如下：
不能的话最大只能上传4M了。要是想上传更大的文件，maxRequestLength，executionTimeout设置大些，同时WinForm下的代码行
//设置获得响应的超时时间（300秒）
httpReq.Timeout = 300000;
也要修改，另外别忘了看看IIS的连接超时是否设置为足够大。
- ///
- /// 将本地文件上传到指定的服务器(HttpWebRequest方法)
- ///
- /// 文件上传到的服务器
- /// 要上传的本地文件（全路径）
- /// 文件上传后的名称
- /// 上传进度条
- /// 成功返回1，失败返回0
- private int Upload_Request2(string address, string fileNamePath, string saveName, ProgressBar progressBar)
- {
- int returnValue = 0; // 要上传的文件
- FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
- BinaryReader r = new BinaryReader(fs); //时间戳
- string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");
- byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "\r\n"); //请求头部信息
- StringBuilder sb = new StringBuilder();
- sb.Append("--");
- sb.Append(strBoundary);
- sb.Append("\r\n");
- sb.Append("Content-Disposition: form-data; name=\"");
- sb.Append("file");
- sb.Append("\"; filename=\"");
- sb.Append(saveName);
- sb.Append("\";");
- sb.Append("\r\n");
- sb.Append("Content-Type: ");
- sb.Append("application/octet-stream");
- sb.Append("\r\n");
- sb.Append("\r\n");
- string strPostHeader = sb.ToString();
- byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader); // 根据uri创建HttpWebRequest对象
- HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
- httpReq.Method = "POST"; //对发送的数据不使用缓存
- httpReq.AllowWriteStreamBuffering = false; //设置获得响应的超时时间（300秒）
- httpReq.Timeout = 300000;
- httpReq.ContentType = "multipart/form-data; boundary=" + strBoundary;
- long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
- long fileLength = fs.Length;
- httpReq.ContentLength = length;
- try
- {
- progressBar.Maximum = int.MaxValue;
- progressBar.Minimum = 0;
- progressBar.Value = 0;
- //每次上传4k
- int bufferLength = 4096;
- byte[] buffer = new byte[bufferLength]; //已上传的字节数
- long offset = 0; //开始上传时间
- DateTime startTime = DateTime.Now;
- int size = r.Read(buffer, 0, bufferLength);
- Stream postStream = httpReq.GetRequestStream(); //发送请求头部消息
- postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
- while (size > 0)
- {
- postStream.Write(buffer, 0, size);
- offset += size;
- progressBar.Value = (int)(offset * (int.MaxValue / length));
- TimeSpan span = DateTime.Now - startTime;
- double second = span.TotalSeconds;
- lblTime.Text = "已用时：" + second.ToString("F2") + "秒";
- if (second > 0.001)
- {
- lblSpeed.Text = "平均速度：" + (offset / 1024 / second).ToString("0.00") + "KB/秒";
- }
- else
- {
- lblSpeed.Text = " 正在连接…";
- }
- lblState.Text = "已上传：" + (offset * 100.0 / length).ToString("F2") + "%";
- lblSize.Text = (offset / 1048576.0).ToString("F2") + "M/" + (fileLength / 1048576.0).ToString("F2") + "M";
- Application.DoEvents();
- size = r.Read(buffer, 0, bufferLength);
- }
- //添加尾部的时间戳
- postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
- postStream.Close(); //获取服务器端的响应
- WebResponse webRespon = httpReq.GetResponse();
- Stream s = webRespon.GetResponseStream();
- //读取服务器端返回的消息
- StreamReader sr = new StreamReader(s);
- String sReturnString = sr.ReadLine();
- s.Close();
- sr.Close();
- if (sReturnString == "Success")
- {
- returnValue = 1;
- }
- else if (sReturnString == "Error")
- {
- returnValue = 0;
- }
- }
- catch
- {
- returnValue = 0;
- }
- finally
- {
- fs.Close();
- r.Close();
- } return returnValue;
- }
C# 向服务器上传文件（客服端winform、服务端web）
标签：byte prot comment minimum seconds uil imp odi asp
原文地址：http://www.cnblogs.com/zhangwei99com/p/7766819.html
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