Java内容重新整理删除过期的东西

Java/JavaDemo/codedemo/netty40x/echo/EchoClient.java

@@ -0,0 +1,55 @@
+package cn.aofeng.demo.netty40x.echo;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.nio.NioEventLoopGroup;
+import io.netty.channel.socket.nio.NioSocketChannel;
+
+import org.apache.commons.lang.math.NumberUtils;
+import org.apache.log4j.Logger;
+
+/**
+ * Echo客户端。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class EchoClient {
+
+    private static Logger _logger = Logger.getLogger(EchoClient.class);
+    
+    public void start(String host, int port) {
+        EventLoopGroup worker = new NioEventLoopGroup(1);
+        Bootstrap bootstrap = new Bootstrap();
+        try {
+            bootstrap.group(worker)
+                .channel(NioSocketChannel.class)
+                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 1000)
+                .handler(new EchoClientHandler())
+                .remoteAddress(host, port);
+            ChannelFuture cf = bootstrap.connect().sync();
+            cf.channel().closeFuture().sync();
+        } catch (Exception e) {
+            _logger.error("occurs error", e);
+        } finally {
+            worker.shutdownGracefully();
+        }
+    }
+    
+    /**
+     * @param args
+     */
+    public static void main(String[] args) {
+        if (args.length != 2) {
+            _logger.error("Invalid arguments。Usage：java cn.aofeng.demo.netty40x.echo.EchoClient 192.168.56.102 8080");
+            System.exit(-1);
+        }
+        
+        String host = args[0];
+        int port = NumberUtils.toInt(args[1], 8080);
+        EchoClient client = new EchoClient();
+        client.start(host, port);
+    }
+
+}