/**
*
* @author Jeff
*
*/
public class HelloWorldClient {
static int SIZE = 10;
static InetSocketAddress ip = new InetSocketAddress("localhost", 8888);
static CharsetEncoder encoder = Charset.forName("GB2312").newEncoder();
static class Message implements Runnable {
protected String name;
String msg = "";
public Message(String index) {
this.name = index;
}
public void run() {
try {
long start = System.currentTimeMillis();
//打开Socket通道
SocketChannel client = SocketChannel.open();
//设置为非阻塞模式
client.configureBlocking(false);
//打开选择器
Selector selector = Selector.open();
//注册连接服务端socket动作
client.register(selector, SelectionKey.OP_CONNECT);
//连接
client.connect(ip);
//分配内存
ByteBuffer buffer = ByteBuffer.allocate(8 * 1024);
int total = 0;
_FOR: for (;;) {
selector.select();
Iterator iter = selector.selectedKeys().iterator();
while (iter.hasNext()) {
SelectionKey key = (SelectionKey) iter.next();
iter.remove();
if (key.isConnectable()) {
SocketChannel channel = (SocketChannel) key
.channel();
if (channel.isConnectionPending())
channel.finishConnect();
channel
.write(encoder
.encode(CharBuffer.wrap(name)));
channel.register(selector, SelectionKey.OP_READ);
} else if (key.isReadable()) {
SocketChannel channel = (SocketChannel) key
.channel();
int count = channel.read(buffer);
if (count > 0) {
total += count;
buffer.flip();
while (buffer.remaining() > 0) {
byte b = buffer.get();
msg += (char) b;
}
buffer.clear();
} else {
client.close();
break _FOR;
}
}
}
}
double last = (System.currentTimeMillis() - start) * 1.0 / 1000;
System.out.println(msg + "used time :" + last + "s.");
msg = "";
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) throws IOException {
String names[] = new String[SIZE];
for (int index = 0; index < SIZE; index++) {
names[index] = "jeff[" + index + "]";
new Thread(new Message(names[index])).start();
}
}
}
