Java内容重新整理删除过期的东西

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

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+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);
+    }
+
+}

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

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+package cn.aofeng.demo.netty40x.echo;
+
+import java.nio.charset.Charset;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import org.apache.log4j.Logger;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.util.CharsetUtil;
+
+/**
+ * 发送数据给服务端，并接收服务端的数据。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class EchoClientHandler extends ChannelInboundHandlerAdapter {
+
+    private static Logger _logger = Logger.getLogger(EchoClientHandler.class);
+    
+    private final Charset _utf8 = CharsetUtil.UTF_8;
+    
+    public void channelActive(ChannelHandlerContext ctx) {
+        DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSZ");
+        String currTimeStr = format.format(new Date());
+        String data = String.format("Hello, current time is %s", currTimeStr);
+        ctx.writeAndFlush( Unpooled.copiedBuffer(data, _utf8) );
+        _logger.info( String.format("Client send data:%s", data) );
+    }
+    
+    public void channelRead(ChannelHandlerContext ctx, Object msg) {
+        ByteBuf inData = (ByteBuf) msg;
+        _logger.info( String.format("Client receive data:%s",  inData.toString(_utf8)) );
+    }
+    
+    public void channelReadComplete(ChannelHandlerContext ctx) {
+        ctx.close();
+    }
+    
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        _logger.error("occurs error", cause);
+        ctx.close();
+    }
+
+}

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

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+package cn.aofeng.demo.netty40x.echo;
+
+import io.netty.bootstrap.ServerBootstrap;
+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.NioServerSocketChannel;
+
+import org.apache.commons.lang.math.NumberUtils;
+import org.apache.log4j.Logger;
+
+/**
+ * Echo服务端：将客户端发送的请求原样返回。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class EchoServer {
+
+    private static Logger _logger = Logger.getLogger(EchoServer.class);
+    
+    public void start(int port) {
+        EventLoopGroup boss = new NioEventLoopGroup(1);
+        EventLoopGroup worker = new NioEventLoopGroup(10);
+        ServerBootstrap bootstrap = new ServerBootstrap();
+        try {
+            bootstrap.group(boss, worker)
+                .channel(NioServerSocketChannel.class)
+                .option(ChannelOption.SO_BACKLOG, 128)
+                .childHandler(new EchoServerHandler())
+                .localAddress(port);
+            ChannelFuture bindFuture = bootstrap.bind().sync();
+            ChannelFuture closeFuture = bindFuture.channel().closeFuture().sync();
+            _logger.info( String.format("%s started and listen on %s", this.getClass().getSimpleName(), closeFuture ) );
+        } catch(Exception ex) {
+            _logger.info( String.format("%s start failed", this.getClass().getSimpleName()), ex);
+        } finally {
+            boss.shutdownGracefully();
+            worker.shutdownGracefully();
+        }
+        
+    }
+    
+    /**
+     * @param args
+     */
+    public static void main(String[] args) {
+        if (args.length != 1) {
+            _logger.error("Invalid arguments。Usage：java cn.aofeng.demo.netty40x.echo.EchoServer 8080");
+            System.exit(-1);
+        }
+        
+        int port = NumberUtils.toInt(args[0], 8080);
+        EchoServer server = new EchoServer();
+        server.start(port);
+    }
+
+}

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

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+package cn.aofeng.demo.netty40x.echo;
+
+import java.nio.charset.Charset;
+
+import org.apache.log4j.Logger;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.ChannelHandler.Sharable;
+
+/**
+ * 将接收到的数据原样返回给发送方。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+@Sharable
+public class EchoServerHandler extends ChannelInboundHandlerAdapter {
+
+    private static Logger _logger = Logger.getLogger(EchoServerHandler.class);
+    
+    public void channelRead(ChannelHandlerContext ctx, Object msg) {
+        ByteBuf inData = (ByteBuf) msg;
+        String str = inData.toString(Charset.forName("UTF-8"));
+        _logger.info( String.format("Server receive data:%s", str) );
+        ctx.write(inData);
+    }
+
+    public void channelReadComplete(ChannelHandlerContext ctx) {
+        ctx.flush().close();
+    }
+
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        _logger.error("occurs error", cause);
+        ctx.close();
+    }
+
+}