JAVA 网络编程多线程上传文件

1. UploadClient.java

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class UploadClient {
	public static void main(String[] args) throws IOException {
		// 创建客户端Socket对象
		Socket s = new Socket("192.168.12.92", 11111);

		// 封装文本文件
		// BufferedReader br = new BufferedReader(new FileReader(
		// "InetAddressDemo.java"));
		BufferedReader br = new BufferedReader(new FileReader(
				"ReceiveDemo.java"));
		// 封装通道内流
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
				s.getOutputStream()));

		String line = null;
		while ((line = br.readLine()) != null) { // 阻塞
			bw.write(line);
			bw.newLine();
			bw.flush();
		}

		// Socket提供了一个终止，它会通知服务器你别等了，我没有数据过来了
		s.shutdownOutput();

		// 接收反馈
		BufferedReader brClient = new BufferedReader(new InputStreamReader(
				s.getInputStream()));
		String client = brClient.readLine(); // 阻塞
		System.out.println(client);

		// 释放资源
		br.close();
		s.close();
	}
}

2. UploadServer.java

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class UploadServer {
	public static void main(String[] args) throws IOException {
		// 创建服务器Socket对象
		ServerSocket ss = new ServerSocket(11111);

		while (true) {
			Socket s = ss.accept();
			new Thread(new UserThread(s)).start();
		}
	}
}

3. UserThread.java

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

public class UserThread implements Runnable {
	private Socket s;

	public UserThread(Socket s) {
		this.s = s;
	}

	@Override
	public void run() {
		try {
			// 封装通道内的流
			BufferedReader br = new BufferedReader(new InputStreamReader(
					s.getInputStream()));
			// 封装文本文件
			// BufferedWriter bw = new BufferedWriter(new
			// FileWriter("Copy.java"));

			// 为了防止名称冲突
			String newName = System.currentTimeMillis() + ".java";
			BufferedWriter bw = new BufferedWriter(new FileWriter(newName));

			String line = null;
			while ((line = br.readLine()) != null) { // 阻塞
				bw.write(line);
				bw.newLine();
				bw.flush();
			}

			// 给出反馈
			BufferedWriter bwServer = new BufferedWriter(
					new OutputStreamWriter(s.getOutputStream()));
			bwServer.write("文件上传成功");
			bwServer.newLine();
			bwServer.flush();

			// 释放资源
			bw.close();
			s.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}