目前,我正在尝试为我的Android设备创建一个小型套接字应用程序。

我想通过套接字连接将大文件(〜500MB)发送到我的笔记本电脑/PC或其他设备。我在Android设备上使用套接字客户端连接到PC上的套接字服务器,但是,当我尝试发送测试字段(〜460MB)时,我的应用程序崩溃了,它说:



我想我的客户无法处理这个文件大小。所以我的问题是:有没有办法通过TCP套接字连接处理这么大的文件?我的代码适用于较小的文件(例如5MB),但适用于较大的文件,但无法使用。

这是我到目前为止的内容:

在我的android设备上运行的客户端:

private class Connecting extends AsyncTask<String, Integer, String>
{
    @Override
    protected String doInBackground(String... serverAdd)
    {
        String filePath = "Path to file";

        File sdFile = new File(filePath);

        try {

            client = new Socket("ip", "port");

            outputStream = client.getOutputStream();
            byte[] buffer = new byte[1024];
            FileInputStream in = new FileInputStream(sdFile);
            int rBytes;
            while((rBytes = in.read(buffer, 0, 1024)) != -1)
            {
              outputStream.write(buffer, 0, rBytes);
            }

            outputStream.flush();
            outputStream.close();
            client.close();


        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}

服务器端:
public class Main {

private static ServerSocket serverSocket;
private static Socket clientSocket;
private static InputStream inputStream;
private static FileOutputStream fileOutputStream;
private static BufferedOutputStream bufferedOutputStream;
private static int filesize = 10000000;
private static int bytesRead;
private static int current = 0;

public static void main(String[] args) throws IOException {

    serverSocket = new ServerSocket(10898);

    System.out.println("Server started. Listening to the port 10898");

    clientSocket = serverSocket.accept();

    byte[] mybytearray = new byte[filesize];

    inputStream = clientSocket.getInputStream();
    fileOutputStream = new FileOutputStream("E:\\output.zip");
    bufferedOutputStream = new BufferedOutputStream(fileOutputStream);

    System.out.println("Receiving...");

    bytesRead = inputStream.read(mybytearray, 0, mybytearray.length);
    current = bytesRead;

    do {
        bytesRead = inputStream.read(mybytearray, current, (mybytearray.length - current));
        if (bytesRead >= 0) {
            current += bytesRead;
        }
    } while (bytesRead > -1);


    bufferedOutputStream.write(mybytearray, 0, current);
    bufferedOutputStream.flush();
    bufferedOutputStream.close();
    inputStream.close();
    clientSocket.close();
    serverSocket.close();

    System.out.println("Sever recieved the file");

}
}

格蕾兹

[编辑]:客户端代码。

最佳答案

这是有关如何对文件进行分块的Java示例代码。您可以将其应用于TCP/IP客户端-服务器应用程序。有关采样的更多信息,请参见(Java - Read file by chunks?),我从中获取了样本。

char[] myBuffer = new char[1024];
int bytesRead = 0;
BufferedReader in = new BufferedReader(new FileReader("foo.txt"));
while ((bytesRead = in.read(myBuffer, 0, 1024)) != -1)
{
    ...
}

10-07 19:22
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