com.jjzhk.Chapter13.file.FileServer.java Source code

Introduction

Here is the source code for com.jjzhk.Chapter13.file.FileServer.java

Source

/*
 * Copyright 2013-2018 Lilinfeng.
 *  
 * Licensed 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.jjzhk.Chapter13.file;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.LineBasedFrameDecoder;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;
import io.netty.util.CharsetUtil;

/**
 * @author lilinfeng
 * @date 20142?14?
 * @version 1.0
 */
public class FileServer {

    public void run(int port) throws Exception {
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 100).childHandler(new ChannelInitializer<SocketChannel>() {
                        /*
                         * (non-Javadoc)
                         * 
                         * @see
                         * io.netty.channel.ChannelInitializer#initChannel(io
                         * .netty.channel.Channel)
                         */
                        public void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(new StringEncoder(CharsetUtil.UTF_8),
                                    new LineBasedFrameDecoder(1024), new StringDecoder(CharsetUtil.UTF_8),
                                    new FileServerHandler());
                        }
                    });
            ChannelFuture f = b.bind(port).sync();
            System.out.println("Start file server at port : " + port);
            f.channel().closeFuture().sync();
        } finally {
            // ?
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) throws Exception {
        int port = 8080;
        if (args.length > 0) {
            try {
                port = Integer.parseInt(args[0]);
            } catch (NumberFormatException e) {
                e.printStackTrace();
            }
        }
        new FileServer().run(port);
    }
}