netty处理post和get

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netty处理客户端传过来的get、post、websocket数据例子

penngo 发布于 2个月前，共有 0 条评论

用neety作为http服务器，在服务器端读取客户端传过来的get和post参数和websocket数据例子，netty版本3.6.6

package com.penngo.http;import java.net.InetSocketAddress;import java.util.concurrent.Executors;import org.jboss.netty.bootstrap.ServerBootstrap;import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;public class HttpServer {    private final int port;    public HttpServer(int port) {        this.port = port;    }    public void run() {        ServerBootstrap bootstrap = new ServerBootstrap(new NioServerSocketChannelFactory(                Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));        bootstrap.setPipelineFactory(new HttpServerPipelineFactory());        bootstrap.bind(new InetSocketAddress(port));        System.out.println("Web socket server started at port " + port + '.');        System.out.println("Open your browser and navigate to http://localhost:" + port + '/');    }    public static void main(String[] args) {        int port;        if (args.length > 0) {            port = Integer.parseInt(args[0]);        } else {            port = 8080;        }        new HttpServer(port).run();    }}

package com.penngo.http;import java.util.List;import java.util.Map;import org.jboss.netty.buffer.ChannelBuffer;import org.jboss.netty.buffer.ChannelBuffers;import org.jboss.netty.channel.ChannelFuture;import org.jboss.netty.channel.ChannelFutureListener;import org.jboss.netty.channel.ChannelHandlerContext;import org.jboss.netty.channel.ExceptionEvent;import org.jboss.netty.channel.MessageEvent;import org.jboss.netty.channel.SimpleChannelUpstreamHandler;import org.jboss.netty.handler.codec.http.DefaultHttpResponse;import org.jboss.netty.handler.codec.http.HttpRequest;import org.jboss.netty.handler.codec.http.HttpResponse;import org.jboss.netty.handler.codec.http.QueryStringDecoder;import org.jboss.netty.handler.codec.http.multipart.Attribute;import org.jboss.netty.handler.codec.http.multipart.DefaultHttpDataFactory;import org.jboss.netty.handler.codec.http.multipart.HttpPostRequestDecoder;import org.jboss.netty.handler.codec.http.multipart.InterfaceHttpData;import org.jboss.netty.handler.codec.http.multipart.InterfaceHttpData.HttpDataType;import org.jboss.netty.handler.codec.http.websocketx.CloseWebSocketFrame;import org.jboss.netty.handler.codec.http.websocketx.PingWebSocketFrame;import org.jboss.netty.handler.codec.http.websocketx.PongWebSocketFrame;import org.jboss.netty.handler.codec.http.websocketx.TextWebSocketFrame;import org.jboss.netty.handler.codec.http.websocketx.WebSocketFrame;import org.jboss.netty.handler.codec.http.websocketx.WebSocketServerHandshaker;import org.jboss.netty.handler.codec.http.websocketx.WebSocketServerHandshakerFactory;import org.jboss.netty.util.CharsetUtil;import static org.jboss.netty.handler.codec.http.HttpHeaders.Names.*;import static org.jboss.netty.handler.codec.http.HttpHeaders.*;import static org.jboss.netty.handler.codec.http.HttpMethod.*;import static org.jboss.netty.handler.codec.http.HttpResponseStatus.*;import static org.jboss.netty.handler.codec.http.HttpVersion.*;public class HttpServerHandler extends SimpleChannelUpstreamHandler {private WebSocketServerHandshaker handshaker;private static final String WEBSOCKET_PATH = "/websocket";@Overridepublic void messageReceived(ChannelHandlerContext ctx, MessageEvent e)throws Exception {Object msg = e.getMessage();if (msg instanceof HttpRequest) {handleHttpRequest(ctx, (HttpRequest) msg);} else if (msg instanceof WebSocketFrame) {handleWebSocketFrame(ctx, (WebSocketFrame) msg);}}private void handleHttpRequest(ChannelHandlerContext ctx, HttpRequest req)throws Exception {System.out.println("handleHttpRequest method==========" + req.getMethod());System.out.println("handleHttpRequest uri==========" + req.getUri());if (req.getMethod() == GET) { // 处理get请求if(req.getUri().equals("/websocket")){  // Handshake        WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(                getWebSocketLocation(req), null, false);        handshaker = wsFactory.newHandshaker(req);        if (handshaker == null) {            wsFactory.sendUnsupportedWebSocketVersionResponse(ctx.getChannel());        } else {            handshaker.handshake(ctx.getChannel(), req).addListener(WebSocketServerHandshaker.HANDSHAKE_LISTENER);        }}else{QueryStringDecoder decoder = new QueryStringDecoder(req.getUri());Map<String, List<String>> parame = decoder.getParameters();List<String> q = parame.get("q"); // 读取从客户端传过来的参数String question = q.get(0);if (question != null && !question.equals("")) {System.out.println("r :" + question);HttpResponse res = new DefaultHttpResponse(HTTP_1_1, OK);String data = "<html><body>你好，GET</body><html>";ChannelBuffer content = ChannelBuffers.copiedBuffer(data,CharsetUtil.UTF_8);res.setHeader(CONTENT_TYPE, "text/html; charset=UTF-8");res.setHeader(ACCESS_CONTROL_ALLOW_ORIGIN, "*");setContentLength(res, content.readableBytes());res.setContent(content);sendHttpResponse(ctx, req, res);}}}if (req.getMethod() == POST) { // 处理POST请求HttpPostRequestDecoder decoder = new HttpPostRequestDecoder(new DefaultHttpDataFactory(false), req);InterfaceHttpData postData = decoder.getBodyHttpData("q"); // //// 读取从客户端传过来的参数String question = "";if (postData.getHttpDataType() == HttpDataType.Attribute) {Attribute attribute = (Attribute) postData;question = attribute.getValue();System.out.println("q:" + question);}if (question != null && !question.equals("")) {HttpResponse res = new DefaultHttpResponse(HTTP_1_1, OK);String data = "<html><body>你好，POST</body><html>";ChannelBuffer content = ChannelBuffers.copiedBuffer(data,CharsetUtil.UTF_8);res.setHeader(CONTENT_TYPE, "text/html; charset=UTF-8");res.setHeader(ACCESS_CONTROL_ALLOW_ORIGIN, "*");setContentLength(res, content.readableBytes());res.setContent(content);sendHttpResponse(ctx, req, res);}return;}}@Overridepublic void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e)throws Exception {e.getCause().printStackTrace();e.getChannel().close();}   private void handleWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame) {        if (frame instanceof CloseWebSocketFrame) {            handshaker.close(ctx.getChannel(), (CloseWebSocketFrame) frame);            return;        }        if (frame instanceof PingWebSocketFrame) {            ctx.getChannel().write(new PongWebSocketFrame(frame.getBinaryData()));            return;        }        if (!(frame instanceof TextWebSocketFrame)) {            throw new UnsupportedOperationException(String.format("%s frame types not supported", frame.getClass()                    .getName()));        }        String request = ((TextWebSocketFrame) frame).getText();        System.out.println("收到socket msg=" + request);        request = "这是来自服务器端的数据";        ctx.getChannel().write(new TextWebSocketFrame(request.toUpperCase()));    }private static void sendHttpResponse(ChannelHandlerContext ctx,HttpRequest req, HttpResponse res) {if (res.getStatus().getCode() != 200) {res.setContent(ChannelBuffers.copiedBuffer(res.getStatus().toString(), CharsetUtil.UTF_8));setContentLength(res, res.getContent().readableBytes());}ChannelFuture f = ctx.getChannel().write(res);if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {f.addListener(ChannelFutureListener.CLOSE);}} private static String getWebSocketLocation(HttpRequest req) {        return "ws://" + req.getHeader(HOST) + WEBSOCKET_PATH;    }}

package com.penngo.http;import static org.jboss.netty.channel.Channels.*;import org.jboss.netty.channel.ChannelPipeline;import org.jboss.netty.channel.ChannelPipelineFactory;import org.jboss.netty.handler.codec.http.HttpChunkAggregator;import org.jboss.netty.handler.codec.http.HttpRequestDecoder;import org.jboss.netty.handler.codec.http.HttpResponseEncoder;public class HttpServerPipelineFactory implements ChannelPipelineFactory {    public ChannelPipeline getPipeline() throws Exception {        // Create a default pipeline implementation.        ChannelPipeline pipeline = pipeline();        pipeline.addLast("decoder", new HttpRequestDecoder());//        pipeline.addLast("aggregator", new HttpChunkAggregator(65536));        pipeline.addLast("encoder", new HttpResponseEncoder());        pipeline.addLast("handler", new HttpServerHandler());        return pipeline;    }}

测试代码

<!DOCTYPE html><html>    <head>        <meta charset="utf-8">        <title>Web Socket Example</title>        <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.3.min.js" type="text/javascript"></script>        <style>        textarea {    width: 500px;    height: 100px;}        </style>        <script>        $(function(){            var Sock = function() {         var socket;         if (!window.WebSocket) {             window.WebSocket = window.MozWebSocket;         }         if (window.WebSocket) {             socket = new WebSocket("ws://localhost:8080/websocket");             socket.onopen = onopen;             socket.onmessage = onmessage;             socket.onclose = onclose;         } else {             alert("Your browser does not support Web Socket.");         }         function onopen(event) {             getTextAreaElement().value = "Web Socket opened!";         }         function onmessage(event) {             appendTextArea(event.data);         }         function onclose(event) {             appendTextArea("Web Socket closed");         }         function appendTextArea(newData) {             var el = getTextAreaElement();             el.value = el.value + '\n' + newData;         }         function getTextAreaElement() {             return document.getElementById('responseText');         }         function send(event) {             event.preventDefault();             if (window.WebSocket) {         if (socket.readyState == WebSocket.OPEN) {             socket.send(event.target.message.value);         } else {             alert("The socket is not open.");         }             }         }         document.forms.inputform.addEventListener('submit', send, false);            }            window.addEventListener('load', function() {         new Sock();            }, false);                        $("#btnGet").click( function () {             $.get("http://localhost:8080/", { q: "John"},             function(data){           $("#responseTextGet").val($("#responseTextGet").val() + data)             });            });$("#btnPost").click( function () {$.post("http://localhost:8080/", { q: "John"},  function(data){$("#responseTextPost").val($("#responseTextGet").val() + data)  });            });        });               </script>    </head>    <body>        <h3>输入内容</h3>        <form name="inputform">            <input type="text" name="message" id="message" placeholder="Enter text to be sent" autofocus>            <input type="submit" value="发送WebSocket数据">        </form>        <h3>服务端返回</h3>        <textarea id="responseText"></textarea>        <h3>输入内容</h3>        <form name="inputform">            <input type="text" name="message" id="messageGet" placeholder="Enter text to be sent" autofocus>            <input type="button" value="Get数据" id="btnGet">        </form>        <h3>服务端返回</h3>        <textarea id="responseTextGet"></textarea>        <h3>输入内容</h3>        <form name="inputform">            <input type="text" name="message" id="messagePost" placeholder="Enter text to be sent" autofocus>            <input type="button" value="Post数据" id="btnPost">        </form>        <h3>服务端返回</h3>        <textarea id="responseTextPost"></textarea>    </body></html>

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