java - Android .apk 文件未完全从 .Net 服务器下载。在手机中获取包解析错误

Question

    using System;
using System.Collections.Generic;

using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class HomePanel : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        DownloadFile();
    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        DownloadFile();
    }
    private void DownloadFile()
    {
        string getPath = "E-MobApps/Sab Recharge.apk";
        System.IO.Stream iStream = null;

        // Buffer to read 10K bytes in chunk:
        byte[] buffer = new Byte[1024];

        // Length of the file:
        int length;

        // Total bytes to read:
        long dataToRead;

        // Identify the file to download including its path.
        string filepath = Server.MapPath(getPath);

        // Identify the file name.
        string filename = System.IO.Path.GetFileName(filepath);
        try
        {
            // Open the file.
            iStream = new System.IO.FileStream(filepath, System.IO.FileMode.Open,
            System.IO.FileAccess.Read, System.IO.FileShare.Read);


            // Total bytes to read:
            dataToRead = iStream.Length;
            Response.ContentType = "application/vnd.android.package-archive";
            Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);

            // Read the bytes.
            while (dataToRead > 0)
            {
                // Verify that the client is connected.
                if (Response.IsClientConnected)
                {
                    // Read the data in buffer.
                    length = iStream.Read(buffer, 0, 1024);

                    // Write the data to the current output stream.
                    Response.OutputStream.Write(buffer, 0, length);

                    // Flush the data to the HTML output.
                    Response.Flush();

                    buffer = new Byte[1024];
                    dataToRead = dataToRead - length;
                }
                else
                {
                    //prevent infinite loop if user disconnects
                    dataToRead = -1;
                }
            }
        }
        catch (Exception ex)
        {
            // Trap the error, if any.
            Response.Write("Error : " + ex.Message);
        }
        finally
        {
            if (iStream != null)
            {
                //Close the file.
                iStream.Close();
            }
            Response.Close();
        }
    }


}

这是我的服务器端代码，我正在尝试使我的 android .apk 文件可在单击链接时下载。但是下载的文件是 16 kb ie 比实际的 ie 小。 3.5MB 可能是什么问题。连我手机内存都够存app

Answer 1

您正在使用:

  Response.Flush();

在读取您的流的循环内。因此，您正在写入 Response.OutputStream 并在下一行中清理响应。

尝试将整个流读取到 byte[]，并且不要在循环中分配任何内容。

当你的 byte[] 完成后，然后将内容分配给响应。