我需要下载一个二进制文件，通过http post上传。我无法下载文件。
我可以看到数据的内容，但我无法保存到本地磁盘。
这就是我在字符串中看到的
- fUYxo2BFe6N Content-Disposition：form-data; NAME = “数据”; filename =“EVLD_1.4.36_16_0993_0_000AAE0E0109_2D8A145A040000CC_0E0B1B0F3B29_0008.akt”内容类型：application / x-gzip
<òÖwTcÈ“cdäã-æ7'fàZÇÇÈÉÀÀAÈåp'Y9，Lp％ì@ 1＆amp; <...Äg¬， ， “8€DDDA “x @ /àüBD，!!ă³e¹！ê™è>è〜™ƒ'e+ R9 *ÌG[+，'ÛÛ€€²ò2²2-2B†--fUYxo2BFe6N Content-Disposition：form-data; name =” SehirID“
16 --fUYxo2BFe6N Content-Disposition：form-data; NAME = “CihazTipiID”
64 --fUYxo2BFe6N Content-Disposition：form-data; NAME = “CihazAltTipiID”
1 --fUYxo2BFe6N Content-Disposition：form-data;名称= “MD5”
1FAFE4C67252889C75C526EA4313BE27 --fUYxo2BFe6N内容 - 处置：表格数据; NAME = “MAC”
<000> 000AAE0E0109 --fUYxo2BFe6N -这是listenint请求的源代码。我可以处理de请求，但我无法将内容保存到文件中..
公共类HttpProcessor { public TcpClient socket; public HttpServer srv;
private Stream inputStream;
public StreamWriter outputStream;
public String http_method;
public String http_url;
public String http_protocol_versionstring;
public Hashtable httpHeaders = new Hashtable();
private static int MAX_POST_SIZE = 10 * 1024 * 1024; // 10MB
public HttpProcessor(TcpClient s, HttpServer srv)
{
this.socket = s;
this.srv = srv;
}
private string streamReadLine(Stream inputStream)
{
int next_char;
string data = "";
while (true)
{
next_char = inputStream.ReadByte();
if (next_char == '\n') { break; }
if (next_char == '\r') { continue; }
if (next_char == -1) { Thread.Sleep(1); continue; };
data += Convert.ToChar(next_char);
}
return data;
}
public void process()
{
// we can't use a StreamReader for input, because it buffers up extra data on us inside it's
// "processed" view of the world, and we want the data raw after the headers
inputStream = new BufferedStream(socket.GetStream());
// we probably shouldn't be using a streamwriter for all output from handlers either
outputStream = new StreamWriter(new BufferedStream(socket.GetStream()));
try
{
parseRequest();
readHeaders();
if (http_method.Equals("GET"))
{
handleGETRequest();
}
else if (http_method.Equals("POST"))
{
handlePOSTRequest();
}
}
catch (Exception e)
{
Console.WriteLine("Exception: " + e.ToString());
writeFailure();
}
outputStream.Flush();
// bs.Flush(); // flush any remaining output
inputStream = null; outputStream = null; // bs = null;
socket.Close();
}
public void parseRequest()
{
String request = streamReadLine(inputStream);
string[] tokens = request.Split(' ');
if (tokens.Length != 3)
{
throw new Exception("invalid http request line");
}
http_method = tokens[0].ToUpper();
http_url = tokens[1];
http_protocol_versionstring = tokens[2];
Console.WriteLine("starting: " + request);
}
public void readHeaders()
{
Console.WriteLine("readHeaders()");
String line;
while ((line = streamReadLine(inputStream)) != null)
{
if (line.Equals(""))
{
Console.WriteLine("got headers");
return;
}
int separator = line.IndexOf(':');
if (separator == -1)
{
throw new Exception("invalid http header line: " + line);
}
String name = line.Substring(0, separator);
int pos = separator + 1;
while ((pos < line.Length) && (line[pos] == ' '))
{
pos++; // strip any spaces
}
string value = line.Substring(pos, line.Length - pos);
Console.WriteLine("header: {0}:{1}", name, value);
httpHeaders[name] = value;
}
}
public void handleGETRequest()
{
srv.handleGETRequest(this);
}
private const int BUF_SIZE = 4096;
public void handlePOSTRequest()
{
// this post data processing just reads everything into a memory stream.
// this is fine for smallish things, but for large stuff we should really
// hand an input stream to the request processor. However, the input stream
// we hand him needs to let him see the "end of the stream" at this content
// length, because otherwise he won't know when he's seen it all!
Console.WriteLine("get post data start");
int content_len = 0;
MemoryStream ms = new MemoryStream();
if (this.httpHeaders.ContainsKey("Content-Length"))
{
content_len = Convert.ToInt32(this.httpHeaders["Content-Length"]);
if (content_len > MAX_POST_SIZE)
{
throw new Exception(
String.Format("POST Content-Length({0}) too big for this simple server",
content_len));
}
byte[] buf = new byte[BUF_SIZE];
int to_read = content_len;
while (to_read > 0)
{
Console.WriteLine("starting Read, to_read={0}", to_read);
int numread = this.inputStream.Read(buf, 0, Math.Min(BUF_SIZE, to_read));
Console.WriteLine("read finished, numread={0}", numread);
if (numread == 0)
{
if (to_read == 0)
{
break;
}
else
{
throw new Exception("client disconnected during post");
}
}
to_read -= numread;
ms.Write(buf, 0, numread);
}
ms.Seek(0, SeekOrigin.Begin);
// String s1 = Encoding.UTF8.GetString(ms.ToArray());
}
Console.WriteLine("get post data end");
srv.handlePOSTRequest(this, new StreamReader(ms));
}
private static Stream GetPostStream(string filePath, string boundary)
{
Stream postDataStream = new System.IO.MemoryStream();
//adding form data
string formDataHeaderTemplate = Environment.NewLine + "--" + boundary + Environment.NewLine +
"Content-Disposition: form-data; name=\"{0}\";" + Environment.NewLine + Environment.NewLine + "{1}";
//foreach (string key in formData.Keys)
//{
// byte[] formItemBytes = System.Text.Encoding.UTF8.GetBytes(string.Format(formDataHeaderTemplate,
// key, formData[key]));
// postDataStream.Write(formItemBytes, 0, formItemBytes.Length);
//}
//adding file data
FileInfo fileInfo = new FileInfo(filePath);
string fileHeaderTemplate = Environment.NewLine + "--" + boundary + Environment.NewLine +
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"" +
Environment.NewLine + "Content-Type: application/vnd.ms-excel" + Environment.NewLine + Environment.NewLine;
byte[] fileHeaderBytes = System.Text.Encoding.UTF8.GetBytes(string.Format(fileHeaderTemplate,
"UploadCSVFile", fileInfo.FullName));
postDataStream.Write(fileHeaderBytes, 0, fileHeaderBytes.Length);
FileStream fileStream = fileInfo.OpenRead();
byte[] buffer = new byte[1024];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
{
postDataStream.Write(buffer, 0, bytesRead);
}
fileStream.Close();
byte[] endBoundaryBytes = System.Text.Encoding.UTF8.GetBytes("--" + boundary + "--");
postDataStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
return postDataStream;
}
public void writeSuccess(string content_type = "text/html")
{
outputStream.WriteLine("HTTP/1.0 200 OK");
outputStream.WriteLine("Content-Type: " + content_type);
outputStream.WriteLine("Connection: close");
outputStream.WriteLine("");
}
public void writeFailure()
{
outputStream.WriteLine("HTTP/1.0 404 File not found");
outputStream.WriteLine("Connection: close");
outputStream.WriteLine("");
}
}
public abstract class HttpServer
{
protected int port;
TcpListener listener;
bool is_active = true;
public HttpServer(int port)
{
this.port = port;
}
public void listen()
{
listener = new TcpListener(port);
listener.Start();
while (is_active)
{
TcpClient s = listener.AcceptTcpClient();
HttpProcessor processor = new HttpProcessor(s, this);
Thread thread = new Thread(new ThreadStart(processor.process));
thread.Start();
Thread.Sleep(1);
}
}
public abstract void handleGETRequest(HttpProcessor p);
public abstract void handlePOSTRequest(HttpProcessor p, StreamReader inputData);
}
public class MyHttpServer : HttpServer
{
public MyHttpServer(int port)
: base(port)
{
}
public override void handleGETRequest(HttpProcessor p)
{
if (p.http_url.Equals("/Test.png"))
{
Stream fs = File.Open("../../Test.png", FileMode.Open);
p.writeSuccess("image/png");
fs.CopyTo(p.outputStream.BaseStream);
p.outputStream.BaseStream.Flush();
}
Console.WriteLine("request: {0}", p.http_url);
p.writeSuccess();
p.outputStream.WriteLine("<html><body><h1>test server</h1>");
p.outputStream.WriteLine("Current Time: " + DateTime.Now.ToString());
p.outputStream.WriteLine("url : {0}", p.http_url);
p.outputStream.WriteLine("<form method=post action=/form>");
p.outputStream.WriteLine("<input type=text name=foo value=foovalue>");
p.outputStream.WriteLine("<input type=submit name=bar value=barvalue>");
p.outputStream.WriteLine("</form>");
}
public override void handlePOSTRequest(HttpProcessor p, StreamReader inputData)
{
Console.WriteLine("POST request: {0}", p.http_url);
string data = inputData.ReadToEnd();
//SaveStreamToFile(inputData);
p.writeSuccess();
p.outputStream.WriteLine("<html><body><h1>test server</h1>");
p.outputStream.WriteLine("<a href=/test>return</a><p>");
p.outputStream.WriteLine("postbody: <pre>{0}</pre>", data);
}
public void SaveStreamToFile(Stream stream)
{
if (stream.Length == 0) return;
// Create a FileStream object to write a stream to a file
using (FileStream fileStream = System.IO.File.Create(@"C:/EmreDenemeHttp.txt", (int)stream.Length))
{
// Fill the bytes[] array with the stream data
byte[] bytesInStream = new byte[stream.Length];
stream.Read(bytesInStream, 0, (int)bytesInStream.Length);
// Use FileStream object to write to the specified file
fileStream.Write(bytesInStream, 0, bytesInStream.Length);
}
}
}
public class TestMain
{
public static int Main(String[] args)
{
HttpServer httpServer;
if (args.GetLength(0) > 0)
{
httpServer = new MyHttpServer(Convert.ToInt16(args[0]));
}
else
{
httpServer = new MyHttpServer(80);
}
Thread thread = new Thread(new ThreadStart(httpServer.listen));
thread.Start();
return 0;
}
}
答案 0 :(得分：-1)
如果您的意思是在浏览器中将其视为字符串，则服务器向您的客户端发送的mime类型可能是错误的。 默认情况下，它设置为text / html。 它应该类似于application / x-binary 或者也许是application / x-gzip 检查显示页面时客户端提取的mime类型，并在服务器上进行相应操作。