netty-确定客户端和服务端编解码工具

netty-client/src/main/java/com/sv/netty/ClientHandler.java

@@ -1,14 +1,16 @@
 package com.sv.netty;
 
 import com.sv.netty.message.HeartBeat;
-import com.sv.netty.message.MessageType;
-import com.sv.netty.message.VenueMessage;
+import com.sv.netty.utils.EncodeMsg;
+import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandler;
 import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.ChannelInboundHandlerAdapter;
+import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.timeout.IdleState;
 import io.netty.handler.timeout.IdleStateEvent;
 
+import java.net.UnknownHostException;
+
 /**
  * 通讯服务器请求处理
  *
@@ -16,77 +18,82 @@ import io.netty.handler.timeout.IdleStateEvent;
  * @date 05/12/2017 10:27 PM
  */
 @ChannelHandler.Sharable
-public class ClientHandler extends ChannelInboundHandlerAdapter {
-
-    private final static String TAG = "ClientHandler";
-
-    private boolean hasRead = false;
-
-    @Override
-    public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
-        super.channelRegistered(ctx);
-//        ClientTcpSession.getInstance().setContext(ctx);
-    }
-
-    @Override
-    public void channelActive(ChannelHandlerContext ctx) throws Exception {
-        super.channelActive(ctx);
-        //服务器连上以后立即模拟心跳返回
-        ctx.writeAndFlush(getHbMessage());
-    }
-
-    @Override
-    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
-        super.channelInactive(ctx);
-        ClientThread.getInstance().clearFuture();
-        ClientThread.getInstance().restart();
-    }
-
-    @Override
-    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
-        super.channelRead(ctx, msg);
-//        Message message = JsonMapper.fromJson(msg.toString(), Message.class);
-//        MessageService.getInstance().execute(message);
-    }
-
-    @Override
-    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
-        super.exceptionCaught(ctx, cause);
-        System.err.println("错了Error");
-        System.err.println("Error");
-//        GlobalConfig.isConnected = false;
-        ctx.close();
-    }
+public class ClientHandler extends SimpleChannelInboundHandler<String> {
 
     /**
-     * 获取心跳返回消息
-     *
-     * @return
-     */
-    private VenueMessage getHbMessage() {
-        HeartBeat hb = new HeartBeat();
-//        hb.setVersionCode(AppUtil.getVersionCode(StartApplication.getAppContext()));
-        VenueMessage message = new VenueMessage();
-        message.setMessageType(MessageType.HB);
-//        message.setDeviceId(DeviceIdUtil.generateDeviceId(mContext));
-        return message;
-    }
-
-    /**
-     * 心跳处理
-     *
+     * 当通道就绪就会触发
      * @param ctx
-     * @param evt
      * @throws Exception
      */
     @Override
-    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
+    public void channelActive(ChannelHandlerContext ctx) throws Exception {
+        super.channelActive(ctx);
+    }
+
+    /**
+     * 当通道失效就会触发
+     * @param ctx
+     * @throws Exception
+     */
+    @Override
+    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
+        super.channelInactive(ctx);
+    }
+
+    /**
+     * 当通道有读取事件时触发
+     * @param ctx
+     * @param msg
+     * @throws Exception
+     */
+    @Override
+    public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
+        System.out.println("接收服务器响应msg:[" + msg + "]");
+//        MessageDTO message = JsonMapper.fromJson(msg, MessageDTO.class);
+//        MessageService.getInstance().execute(message);
+    }
+
+    /**
+     * 心跳
+     * @param ctx
+     * @param evt
+     */
+    @Override
+    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws UnknownHostException {
         if (IdleStateEvent.class.isAssignableFrom(evt.getClass())) {
             IdleStateEvent event = (IdleStateEvent) evt;
             if (event.state() == IdleState.ALL_IDLE) {
-                ctx.writeAndFlush(getHbMessage());
+                ctx.write(EncodeMsg.INSTANCE.encode(getHbMessage()));
+                ctx.flush();
             }
         }
     }
 
+    /**
+     * 封装心跳请求包
+     * @throws Exception
+     */
+    private HeartBeat getHbMessage() {
+        HeartBeat hb = new HeartBeat();
+        hb.setDeviceName("dsadasdasd");
+        hb.setVenueId(123);
+        return hb;
+    }
+
+    /**
+     * 处理异常
+     * @param ctx
+     * @param cause
+     * @throws Exception
+     */
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        System.out.println("ClientHandler exceptionCaught");
+        cause.printStackTrace();
+        Channel channel = ctx.channel();
+        if(channel.isActive()) {
+            ctx.close();
+        }
+    }
+
 }