package cn.itcast_15;

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

public class UploadServer {
  public static void main(String[] args) throws IOException {
    // 创建服务器对象
    ServerSocket ss = new ServerSocket(9527);

    // 启动线程
    while (true) {
      // 监听客户链接
      Socket s = ss.accept();
      new Thread(new UserThread(s)).start();
    }
  }
}


package cn.itcast_15;

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 {
      // 封装通道内流
      BufferedReader br = new BufferedReader(new InputStreamReader(
          s.getInputStream()));
      // 封装文本文件
      // BufferedWriter bw = new BufferedWriter(new
      // FileWriter("Copy.java"));
      String newName = System.currentTimeMillis() + ".java";
      BufferedWriter bw = new BufferedWriter(new FileWriter(newName));

      String line = null;
      while ((line = br.readLine()) != null) {
        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();
    }
  }

}


package cn.itcast_15;

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("127.0.0.1", 9527);

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

    String line = null;
    while ((line = br.readLine()) != null) {
      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();
    System.out.println(client);

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