import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.util.Iterator;
import java.util.Set;
public class NIOServer {
/*标识数字*/
private int flag = 0;
/*缓冲区大小*/
private int BLOCK = 4096;
/*接受数据缓冲区*/
private ByteBuffer sendbuffer = ByteBuffer.allocate(BLOCK);
/*发送数据缓冲区*/
private ByteBuffer receivebuffer = ByteBuffer.allocate(BLOCK);
private Selector selector;
public NIOServer(int port) throws IOException {
// 打开服务器套接字通道
ServerSocketChannel serverSocketChannel = ServerSocketChannel.open();
// 服务器配置为非阻塞
serverSocketChannel.configureBlocking(false);
// 检索与此通道关联的服务器套接字
ServerSocket serverSocket = serverSocketChannel.socket();
// 进行服务的绑定
serverSocket.bind(new InetSocketAddress(port));
// 通过open()方法找到Selector
selector = Selector.open();
// 注册到selector,等待连接
serverSocketChannel.register(selector, SelectionKey.OP_ACCEPT);
System.out.println("Server Start----8383:");
}
// 监听
private void listen() throws IOException {
while (true) {
// 选择一组键,并且相应的通道已经打开
selector.select();
// 返回此选择器的已选择键集。
Set<SelectionKey> selectionKeys = selector.selectedKeys();
Iterator<SelectionKey> iterator = selectionKeys.iterator();
while (iterator.hasNext()) {
SelectionKey selectionKey = iterator.next();
iterator.remove();
handleKey(selectionKey);
}
}
}
int id=10000;
// 处理请求
private void handleKey(SelectionKey selectionKey) throws IOException {
// 接受请求
try{
ServerSocketChannel server = null;
SocketChannel client = null;
String receiveText = null;
String sendText = null;
int count=0;
// 测试此键的通道是否已准备好接受新的套接字连接。
if (selectionKey.isAcceptable()) {
// 返回为之创建此键的通道。
server = (ServerSocketChannel) selectionKey.channel();
// 接受到此通道套接字的连接。
// 此方法返回的套接字通道(如果有)将处于阻塞模式。
client = server.accept();
// 配置为非阻塞
client.configureBlocking(false);
// 注册到selector,等待连接
client.register(selector, SelectionKey.OP_READ |SelectionKey.OP_WRITE);
} else if (selectionKey.isValid()) {
// 返回为之创建此键的通道。
client = (SocketChannel) selectionKey.channel();
//将缓冲区清空以备下次读取
receivebuffer.clear();
//读取服务器发送来的数据到缓冲区中
count = client.read(receivebuffer);
if (count > 0) {
receiveText = new String( receivebuffer.array(),0,count);
System.out.println("服务器端接受客户端数据--:"+receiveText);
}
String[] strs=receiveText.split(",");
if (strs[0].equals("0")){
strs[0]=String.valueOf(id++);
};
//将缓冲区清空以备下次写入
sendbuffer.clear();
// 返回为之创建此键的通道。
client = (SocketChannel) selectionKey.channel();
for (int i=0 ;i<strs.length;i++)
sendText=",,,,"+strs[i];
sendText="321\n"; //要加\n lua才能收到
//向缓冲区中输入数据
sendbuffer.put(sendText.getBytes());
//将缓冲区各标志复位,因为向里面put了数据标志被改变要想从中读取数据发向服务器,就要复位
sendbuffer.flip();
//输出到通道
client.write(sendbuffer);
System.out.println(sendText.length()+"服务器端向客户端发送数据--:"+sendText);
Thread.sleep(1000);
}
}
catch(Exception e){}
}
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
int port = 8383;
NIOServer server = new NIOServer(port);
server.listen();
}
}
local socket = require("socket")
client = socket.connect("127.0.0.1", 8383)
client:send("12345\n")
--client:settimeout(0)
while true do
s= client:receive()
-- if s~=nil then
print(s)
-- break
-- end
end
client:close()