Socket 外网 文件传输 大文件

1. Server side code:

package test.bwl;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Calendar;
import java.util.Date;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;

public class SocketManager {
	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) {
		SocketManager manager = new SocketManager();
		manager.doListen();
	}

	public void doListen() {
		ServerSocket server;
		try {
			server = new ServerSocket(9991);
			while (true) {
				Socket client = server.accept();
				new Thread(new SSocket(client)).start();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	//服务器进程
	class SSocket implements Runnable {

		Socket socket;
		private final StringBuffer FILE_PATH = new StringBuffer("c:/");
		static final int BUFFER = 2048;
		
		public SSocket(Socket client) {
			this.socket = client;
		}

		public void run() {
			Calendar today = Calendar.getInstance();
			File file = new File(FILE_PATH.append(today.get(Calendar.YEAR)+"-"+today.get(Calendar.MONTH)+"-"+today.get(Calendar.DAY_OF_MONTH)).toString());
			if(!file.exists()){
				file.mkdir();
			}
			DataOutputStream serverToClientTextStream = null; 
			FileOutputStream writeFileToLocalBinStream = null;
			
			try {
                                serverToClientTextStream = new DataOutputStream(socket.getOutputStream());
				serverToClientTextStream.writeUTF("Server received done!");
				FileUtils.copyInputStreamToFile(socket.getInputStream(), new File(file.getPath() + "/" + new Date().getTime()));

	          	} catch (IOException e) {
				e.printStackTrace();
			}finally {
				if (socket != null) {
					try {
						socket.close();
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			}
		}
	}
}

9991: 服务器端监听端口号。


2. Client side code:

package test.bwl;

import io.ReadFile;

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;

public class SocketClient {
	
        private static final int BUFFER = 2048;

	public static void main(String[] args) {
		Socket socket = null;
                byte[] buf = new byte[BUFFER];
                try {
			socket = new Socket(InetAddress.getByName("www.domain.com"),9991);
			// get input and output stream of socket 
			FileOutputStream clientToServerStream = (FileOutputStream)socket.getOutputStream();
			DataInputStream serverToClientStream = new DataInputStream(socket.getInputStream());
			
			// write data to server from client
			InputStream is = new FileInputStream(new File("c:/SYSTEM01.DBF"));
			BufferedInputStream bis = new BufferedInputStream(is);
                       
            while(bis.read(buf) != -1){
                    clientToServerStream.write(buf);
                    clientToServerStream.flush();
			}			
                        System.out.println(serverToClientStream.readUTF());
			
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (socket != null) {
				try {
					socket.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}
}

  www.domain.com: 服务器域名 或者 IP

9991: socket server 监听端口号


3. 配置路由器 NAT设置

 3.1 端口触发： 我在电脑上用的是花生壳，3389是花生壳的端口号。

3.2 虚拟服务器

192.168.1.4 : 花生壳主机IP（不过好像写别的也可以）

192.168.1.3 : socket server 主机 局域网IP

 
4. 启动Socket server side。运行 SocketClient.

经测试成功。