網路程式設計之Socket、面試常出現的檔案上傳
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class Server {
public static void main(String[] args) throws IOException {
ServerSocket server = null;
try {
server = new ServerSocket(8000);
System.out.println(“啟動成功!”);
} catch (IOException e) {
System.out.println(“啟動伺服器出錯!”);
}
Socket socket = null;
try {
socket = server.accept();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println("…連線成功!");
InputStream in = socket.getInputStream();
OutputStream out = new FileOutputStream(“D:\a.txt”);
byte[] ch = new byte[1024];
int len = 0;
while ((len = in.read(ch)) != -1) {
out.write(ch, 0, len);
}
OutputStream outSoc = socket.getOutputStream();
outSoc.write(“上傳成功!”.getBytes());
out.close();
server.close();
socket.close();
}
}
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
public class Client {
public static void main(String[] args) throws UnknownHostException, IOException { Socket socket =new Socket(InetAddress.getLocalHost(),8000); InputStream input = new FileInputStream("D:\\a.txt"); OutputStream out = socket.getOutputStream(); byte[] buf = new byte[1024]; int len = 0; while ((len = input.read(buf)) != -1) { out.write(buf, 0, len); } out.flush(); BufferedReader bufs = new BufferedReader(new InputStreamReader(socket.getInputStream())); System.out.println(new String(bufs.readLine())); input.close(); socket.close(); }
}
截圖: