标签:worker font event 客户 efault log final imp 服务启动
Netty提供的handler:HttpServerCodec http 请求编解码处理类
第一个netty的例子,,server服务端的编写,客户端使用 curl : http://IP:PORT请求
服务启动类
1 public class TestServer {
2
3 public static void main(String[] args) throws Exception {
4
5 //定义两个线程组
6 EventLoopGroup bossGroup = new NioEventLoopGroup();//接收连接,分发给worker
7 EventLoopGroup workerGroup = new NioEventLoopGroup();//处理连接
8
9 try{
10 //启动服务器 : 简化服务端启动
11 ServerBootstrap serverBootstrap = new ServerBootstrap();
12 serverBootstrap.group(bossGroup,workerGroup)
13 .channel(NioServerSocketChannel.class)
14 .childHandler(new TestServerInitializer());//子处理器
15
16 //绑定端口
17 ChannelFuture channelFuture = serverBootstrap.bind(8899).sync();
18 channelFuture.channel().closeFuture().sync();
19 }finally {
20
21 //优雅关闭线程组
22 bossGroup.shutdownGracefully();
23 workerGroup.shutdownGracefully();
24 }
25
26
27
28 }
29
30
31 }
初始化类 :
1 public class TestServerInitializer extends ChannelInitializer<SocketChannel> {
2
3 @Override
4 protected void initChannel(SocketChannel ch) throws Exception {
5 //拦截器
6 ChannelPipeline pipeline = ch.pipeline();
7 //注册拦截器
8 pipeline.addLast("httpServerCodec",new HttpServerCodec());//请求编解码
9 pipeline.addLast("testHttpServerHandler",new TestHttpServerHandler());
10 }
11 }
自定义处理器类:
1 public class TestHttpServerHandler extends SimpleChannelInboundHandler<HttpObject> {
2
3 //读取客户端的请求,向客户端返回响应的方法
4 //计划在5.0 改名 messagereceived 消息接收,5.0已废弃
5 @Override
6 protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
7
8 System.out.println(msg.getClass());
9
10 System.out.println(ctx.channel().remoteAddress());
11
12 Thread.sleep(8000);
13
14 if(msg instanceof HttpRequest){
15 HttpRequest httpRequest = (HttpRequest)msg;
16
17 System.out.println("请求方法名:"+httpRequest.getMethod().name());
18
19 URI uri = new URI(httpRequest.getUri());
20 if("/favicon.ico".equals(uri.getPath())){
21 System.out.println("请求favicon.ico");
22 return;
23 }
24 //构造响应内容
25 ByteBuf content = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
26
27 FullHttpResponse response = new DefaultFullHttpResponse(
28 HttpVersion.HTTP_1_1, HttpResponseStatus.OK, content);
29
30 response.headers().set(HttpHeaderNames.CONTENT_TYPE,"text/plain");
31 response.headers().set(HttpHeaderNames.CONTENT_LENGTH,content.readableBytes());
32
33
34 //返回响应
35 ctx.writeAndFlush(response);
36 ctx.close();
37 }
38
39 }
40
41 @Override
42 public void channelActive(ChannelHandlerContext ctx) throws Exception {
43 System.out.println("channel active");
44 super.channelActive(ctx);
45 }
46
47 @Override
48 public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
49 System.out.println("channel registered");
50 super.channelRegistered(ctx);
51 }
52
53 @Override
54 public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
55 System.out.println("handler added");
56 super.handlerAdded(ctx);
57 }
58
59 @Override
60 public void channelInactive(ChannelHandlerContext ctx) throws Exception {
61 System.out.println("channel inactive");
62 super.channelInactive(ctx);
63 }
64
65 @Override
66 public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
67 System.out.println("channel unregistered");
68 super.channelUnregistered(ctx);
69 }
70 }
标签:worker font event 客户 efault log final imp 服务启动
原文地址:http://www.cnblogs.com/fubinhnust/p/7123543.html