这里有一个很好的例子:。 Java TCP的袖珍:数据转让缓慢。
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class Transfer {
public static void main(String[] args) {
final String largeFile = "/home/dr/test.dat"; // REPLACE
final int BUFFER_SIZE = 65536;
new Thread(new Runnable() {
public void run() {
try {
ServerSocket serverSocket = new ServerSocket(12345);
Socket clientSocket = serverSocket.accept();
long startTime = System.currentTimeMillis();
byte[] buffer = new byte[BUFFER_SIZE];
int read;
int totalRead = 0;
InputStream clientInputStream = clientSocket.getInputStream();
while ((read = clientInputStream.read(buffer)) != -1) {
totalRead += read;
}
long endTime = System.currentTimeMillis();
System.out.println(totalRead + " bytes read in " + (endTime - startTime) + " ms.");
} catch (IOException e) {
}
}
}).start();
new Thread(new Runnable() {
public void run() {
try {
Thread.sleep(1000);
Socket socket = new Socket("localhost", 12345);
FileInputStream fileInputStream = new FileInputStream(largeFile);
OutputStream socketOutputStream = socket.getOutputStream();
long startTime = System.currentTimeMillis();
byte[] buffer = new byte[BUFFER_SIZE];
int read;
int readTotal = 0;
while ((read = fileInputStream.read(buffer)) != -1) {
socketOutputStream.write(buffer, 0, read);
readTotal += read;
}
socketOutputStream.close();
fileInputStream.close();
socket.close();
long endTime = System.currentTimeMillis();
System.out.println(readTotal + " bytes written in " + (endTime - startTime) + " ms.");
} catch (Exception e) {
}
}
}).start();
}
}
