需要帮助：zip文件流 [英] Help required: zip files streaming

问题描述

我有在网络发送zip文件的问题..所有其他格式我能够发送除了.zip ..

i have problem in sending zip file in network.. all other formats i am able to send except .zip..

我试过了很多我不知道做这个..代码我已经写在客户端上传文件，这是由microsoft建议这里是链接

i tried a lot i dont no how to do this.. the code i have written at client side to upload file, this is suggested by microsoft here is the link

我可以创建zip文件，如果我试图打开它说corrupt..size的文件

i am able to create zip file, if i try to open it says corrupted..size of the file also varying lot.

这里是代码

  public void UploadFile(string localFile, string uploadUrl)
    {

        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uploadUrl);

        req.Method = "PUT";
        req.AllowWriteStreamBuffering = true;

        // Retrieve request stream and wrap in StreamWriter
        Stream reqStream = req.GetRequestStream();
        StreamWriter wrtr = new StreamWriter(reqStream);

        // Open the local file


        Stream Stream = File.Open(localFile, FileMode.Open);

        // loop through the local file reading each line 
        //  and writing to the request stream buffer 

        byte[] buff = new byte[1024];
        int bytesRead;
        while ((bytesRead = Stream.Read(buff, 0,1024)) > 0)
        {
            wrtr.Write(buff);
        }



        Stream.Close();
        wrtr.Close();

        try
        {
            req.GetResponse();
        }
        catch(Exception ee)
        {

        }

        reqStream.Close();

请帮助我...

感谢

推荐答案

主要的问题是你使用的StreamWriter是一个TextWriter， / em>数据，而不是像zip文件这样的二进制文件。

The main problem is that you're using a StreamWriter, which is a TextWriter, designed for text data, not binary files like zip files.

此外，还有Jacob提到的问题，以及你没有关闭请求流直到你已经收到响应 - 虽然这不会有什么不同，因为 StreamWriter 会先关闭它。

Additionally there's the problem Jacob mentioned, and also the fact that you're not closing the request stream until after you've received the response - although that won't make any difference because the StreamWriter will close it first.

这里是固定的代码，更改为使用使用语句（以避免流打开），更简单的调用文件类和更有意义的名称（IMO）。

Here's the fixed code, changed to use using statements (to avoid leaving streams open), a simpler call to the File class, and more meaningful names (IMO).

using (Stream output = req.GetRequestStream())
using (Stream input = File.OpenRead(localFile))
{
    // loop through the local file reading each line 
    //  and writing to the request stream buffer 

    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = input.Read(buffer, 0, 1024)) > 0)
    {
        output.Write(buffer, 0, bytesRead);
    }
}

请注意，您可以轻松地将while循环提取到帮助方法：

Note that you can easily extract the while loop into a helper method:

public static void CopyStream(Stream input, Stream output)
{
    // loop through the local file reading each line 
    //  and writing to the request stream buffer 

    byte[] buffer = new byte[1024];
    int bytesRead;
    while ((bytesRead = input.Read(buffer, 0, 1024)) > 0)
    {
        output.Write(buffer, 0, bytesRead);
    }
}

/ p>

to be used from other places, leaving just:

using (Stream output = req.GetRequestStream())
using (Stream input = File.OpenRead(localFile))
{
    CopyStream(input, output);
}

这篇关于需要帮助：zip文件流的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！