Java内容重新整理删除过期的东西

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

@@ -0,0 +1,49 @@
+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();
+    }
+
+}