赞
踩
String msg = reader.readLine()
1.我们在客户端只要使用传统的客户端编写方式即可
- package com.netty.study.nettystart.client;
-
- import io.netty.bootstrap.Bootstrap;
- import io.netty.buffer.ByteBuf;
- import io.netty.buffer.Unpooled;
- import io.netty.channel.*;
- import io.netty.channel.nio.NioEventLoopGroup;
- import io.netty.channel.oio.OioEventLoopGroup;
- import io.netty.channel.socket.SocketChannel;
- import io.netty.channel.socket.nio.NioDatagramChannel;
- import io.netty.channel.socket.nio.NioSocketChannel;
- import io.netty.channel.socket.oio.OioSocketChannel;
- import io.netty.handler.codec.string.StringEncoder;
- import io.netty.util.CharsetUtil;
-
- import java.net.InetSocketAddress;
- import java.nio.charset.Charset;
- import java.nio.charset.StandardCharsets;
-
- public class NettyClient {
- public static void main(String[] args) {
- EventLoopGroup group = new OioEventLoopGroup();
-
- try {
- ChannelFuture nettyclient_连接陈工 = new Bootstrap()
- .group(group)
- .channel(OioSocketChannel.class)
- .remoteAddress(new InetSocketAddress("127.0.0.1",9746))
- .handler(new ChannelInitializer<SocketChannel>() {
- @Override
- public void initChannel(SocketChannel nioSocketChannel) throws Exception {
- // nioSocketChannel.pipeline().addLast("encoder", new StringEncoder(CharsetUtil.UTF_8));
- nioSocketChannel.pipeline().addLast(new SimpleChannelInboundHandler<ByteBuf>() {
- @Override
- public void channelActive(ChannelHandlerContext ctx) throws Exception {
- String message = "Hello Server\n";
- ByteBuf buffer = Unpooled.copiedBuffer(message.getBytes());
- ctx.writeAndFlush(buffer);
- }
-
- @Override
- public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
- cause.printStackTrace();
- ctx.channel().close();
- }
-
- @Override
- protected void channelRead0(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf) throws Exception {
- System.out.println(byteBuf.toString(Charset.defaultCharset()));
-
- }
-
- @Override
- public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
- super.channelRegistered(ctx);
- }
- });
- }
- }).connect().sync();
- nettyclient_连接陈工.channel().closeFuture().sync();
- } catch (InterruptedException e) {
- throw new RuntimeException(e);
- } finally {
- group.shutdownGracefully();
- }
- }
- }
2.服务端代码
- package com.netty.study.nettystart.server;
-
- import java.io.*;
- import java.net.ServerSocket;
- import java.net.Socket;
- import java.nio.charset.Charset;
- import java.nio.charset.StandardCharsets;
- import java.util.Arrays;
-
- public class SimpleSocketServer {
- private static final int PORT = 9746;
-
- public static void main(String[] args) throws IOException {
- final String QUIT = "quit";
- final int DEFAULT_PORT = 9746;
- ServerSocket serverSocket = null;
- BufferedReader reader = null;
- BufferedWriter writer = null;
-
- try {
- // 绑定监听端口
- serverSocket = new ServerSocket(DEFAULT_PORT);
- System.out.println("启动服务器,监听服务器本地端口" + DEFAULT_PORT);
-
- while (true) {
- // 等待客户端连接
- Socket socket = serverSocket.accept();
- System.out.println("客户端["+socket.getInetAddress()+":"+ socket.getPort() + "]已连接");
-
- InputStream inputStream = socket.getInputStream();
-
-
- reader = new BufferedReader(
- new InputStreamReader(inputStream)
- );
-
- writer = new BufferedWriter(
- new OutputStreamWriter(socket.getOutputStream())
- );
-
-
- String msg = reader.readLine();
- while (msg != null) {
- // 读取客户端发送的消息
- System.out.println("客户端["+socket.getInetAddress()+":"+ socket.getPort() + "]: " + msg);
-
- // 回复客户发送的消息
- writer.write("服务器已收到: " + msg + "\n");
- //防止消息遗留到本地缓冲区,保证马上发送出去
- writer.flush();
-
- // 查看客户端是否退出
- if (QUIT.equalsIgnoreCase(msg)) {
- System.out.println("客户端["+socket.getInetAddress()+":"+ socket.getPort() + "]已断开连接");
- break;
- }
- }
- // System.out.println(decodedData+"_----------------------------------");
- }
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- serverSocket.close();
- reader.close();
- writer.close();
- System.out.println("关闭serverSocket");
- } catch (IOException e) {
- e.printStackTrace();
- }
-
- }
-
- }
- }
1.客户端代码和上边一样,唯一的区别就是,不需要固定结尾的/n了,随便发送即可
2.服务端代码:
- package com.netty.study.nettystart.server;
-
- import java.io.*;
- import java.net.ServerSocket;
- import java.net.Socket;
- import java.nio.charset.Charset;
- import java.nio.charset.StandardCharsets;
- import java.util.Arrays;
-
- public class SimpleSocketServer {
- private static final int PORT = 9746;
-
- public static void main(String[] args) throws IOException {
- final String QUIT = "quit";
- final int DEFAULT_PORT = 9746;
- ServerSocket serverSocket = null;
- BufferedReader reader = null;
- BufferedWriter writer = null;
-
- try {
- // 绑定监听端口
- serverSocket = new ServerSocket(DEFAULT_PORT);
- System.out.println("启动服务器,监听服务器本地端口" + DEFAULT_PORT);
-
- while (true) {
- // 等待客户端连接
- Socket socket = serverSocket.accept();
- System.out.println("客户端["+socket.getInetAddress()+":"+ socket.getPort() + "]已连接");
-
- InputStream inputStream = socket.getInputStream();
- byte[] buffer = new byte[1024];
- int bytesRead = inputStream.read(buffer); // 读取字节数据
- byte[] receivedData = Arrays.copyOf(buffer, bytesRead); // 接收到的字节数据
- // 解码操作,例如将字节数组转换为字符串
- String decodedData = new String(receivedData, StandardCharsets.UTF_8);
-
-
-
- System.out.println("消息:"+decodedData+"_----------------------------------");
- }
- } catch (IOException e) {
- e.printStackTrace();
- } finally {
- try {
- serverSocket.close();
- reader.close();
- writer.close();
- System.out.println("关闭serverSocket");
- } catch (IOException e) {
- e.printStackTrace();
- }
-
- }
-
- }
- }
Copyright © 2003-2013 www.wpsshop.cn 版权所有,并保留所有权利。