package test.io;import java.nio.channels.*;import java.nio.charset.*;import java.net.*;import java.io.*;import java.util.*;import java.nio.*;public class FileServer { private int port = 8050; private ServerSocketChannel serverSocketChannel; private Charset charset = Charset.forName("GBK"); private Selector selector = null; public FileServer() throws IOException { selector = Selector.open(); serverSocketChannel = ServerSocketChannel.open(); serverSocketChannel.socket().setReuseAddress(true); serverSocketChannel.socket().bind(new InetSocketAddress(port)); System.out.println("服务器启动"); } /* 编码过程 */ public ByteBuffer encode(String str) { return charset.encode(str); } /* 解码过程 */ public String decode(ByteBuffer bb) { return charset.decode(bb).toString(); } /* 服务器服务方法 */ public void service() throws IOException { serverSocketChannel.configureBlocking(false); serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT); /** 外循环，已经发生了SelectionKey数目 */ while (selector.select() > 0) { /* 得到已经被捕获了的SelectionKey的集合 */ Iterator iterator = selector.selectedKeys().iterator(); while (iterator.hasNext()) { SelectionKey key = null; try { key = (SelectionKey) iterator.next(); iterator.remove(); if (key.isAcceptable()) { ServerSocketChannel ssc = (ServerSocketChannel) key.channel(); SocketChannel sc = ssc.accept(); System.out.println("客户端机子的地址是 " + sc.socket().getLocalAddress() + " 客户端机机子的端口号是 " + sc.socket().getLocalPort()); sc.configureBlocking(false); ByteBuffer buffer = ByteBuffer.allocate(1024); sc.register(selector, SelectionKey.OP_READ | SelectionKey.OP_WRITE, buffer); } if (key.isReadable()) { reveice(key); } if (key.isWritable()) { send(key); } } catch (IOException e) { e.printStackTrace(); try { if (key != null) { key.cancel(); key.channel().close(); } } catch (ClosedChannelException cex) { e.printStackTrace(); } } } /* 内循环完 */ } /* 外循环完 */ } /* service方法完 */ public void reveice(SelectionKey key) throws IOException { if (key == null) return; ByteBuffer buff = (ByteBuffer) key.attachment(); SocketChannel sc = (SocketChannel) key.channel(); buff.limit(buff.capacity()); buff.position(0); sc.read(buff); buff.flip(); String reviceData = decode(buff); } /* 发送文件 */ public void send(SelectionKey key) { if (key == null) return; ByteBuffer buff = (ByteBuffer) key.attachment(); SocketChannel sc = (SocketChannel) key.channel(); String data = decode(buff); if (data.indexOf("get") == -1) return; String subStr = data.substring(data.indexOf(" "), data.length()); System.out.println("截取之后的字符串是 " + subStr); FileInputStream fileInput = null; try { fileInput = new FileInputStream(subStr); FileChannel fileChannel = fileInput.getChannel(); fileChannel.transferTo(0, fileChannel.size(), sc); } catch (IOException e) { e.printStackTrace(); } finally { try { fileInput.close(); } catch (IOException ex) { ex.printStackTrace(); } } } public static void main(String[] args) throws IOException { new FileServer().service(); }}http://www.java2000.net/viewthread.jsp?tid=6079
http://topic.csdn.net/u/20080610/02/6e33be0a-152f-481a-a10e-f9c11c8fd9ad.html?seed=577363641
<script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>
再分享一下我老师大神的人工智能教程吧。零基础！通俗易懂！风趣幽默！还带黄段子！希望你也加入到我们人工智能的队伍中来！https://blog.csdn.net/jiangjunshow