com.qq.servlet.demo.netty.sample.http.helloworld.HttpHelloWorldServerHandler.java Source code

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Here is the source code for com.qq.servlet.demo.netty.sample.http.helloworld.HttpHelloWorldServerHandler.java

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/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package com.qq.servlet.demo.netty.sample.http.helloworld;

import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerAdapter;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.DefaultLastHttpContent;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.util.CharsetUtil;
import static io.netty.handler.codec.http.HttpHeaders.Names.*;
import static io.netty.handler.codec.http.HttpHeaders.*;
import static io.netty.handler.codec.http.HttpResponseStatus.*;
import static io.netty.handler.codec.http.HttpVersion.*;

public class HttpHelloWorldServerHandler extends ChannelHandlerAdapter {
    private static final byte[] CONTENT = { 'H', 'e', 'l', 'l', 'o', ' ', 'W', 'o', 'r', 'l', 'd' };

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        System.out.println(msg);
        System.out.println("\n\n\n\n============" + msg.getClass().getName() + "=================\n\n\n");
        if (msg instanceof HttpRequest) {
            HttpRequest req = (HttpRequest) msg;
            String uri = req.getUri();
            System.out.println("uri--->>>" + uri);
            if (is100ContinueExpected(req)) {
                ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
            }
            boolean keepAlive = isKeepAlive(req);
            FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK,
                    Unpooled.wrappedBuffer("".getBytes()));
            response.headers().set(CONTENT_TYPE, "text/plain");
            response.headers().set(CONTENT_LENGTH, response.content().readableBytes());

            if (!keepAlive) {
                ctx.write(response).addListener(ChannelFutureListener.CLOSE);
            } else {
                response.headers().set(CONNECTION, Values.KEEP_ALIVE);
                ctx.write(response);
            }
        } else if (msg instanceof DefaultLastHttpContent) {
            DefaultLastHttpContent httpContent = (DefaultLastHttpContent) msg;
            String body = httpContent.content().toString(CharsetUtil.UTF_8);
            System.out.println("body===>>> " + body);
        }
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}