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package UnitTest;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.*;
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import io.netty.channel.nio.NioEventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioSocketChannel;
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import io.netty.handler.codec.MessageToByteEncoder;
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public class HexDataSender {
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private final String host;
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private final int port;
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public HexDataSender(String host, int port) {
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this.host = host;
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this.port = port;
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}
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public void sendHexData(String hexData) throws Exception {
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EventLoopGroup workerGroup = new NioEventLoopGroup();
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try {
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Bootstrap b = new Bootstrap();
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b.group(workerGroup);
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b.channel(NioSocketChannel.class);
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b.option(ChannelOption.SO_KEEPALIVE, true);
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b.handler(new ChannelInitializer<SocketChannel>() {
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@Override
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public void initChannel(SocketChannel ch) {
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ChannelPipeline p = ch.pipeline();
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p.addLast(new HexDataEncoder());
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p.addLast(new HexDataSenderHandler(hexData));
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}
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});
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// Start the client.
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ChannelFuture f = b.connect(host, port).sync();
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// Wait until the connection is closed.
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f.channel().closeFuture().sync();
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} finally {
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workerGroup.shutdownGracefully();
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}
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}
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public static String IP = "10.10.21.18";
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public static int PORT = 8001;
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public static void Open(String sb_id) throws Exception {
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//开
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String hexData = "16 00 34 F5 41 11 FE 82 0D 02 ? 00 00 00 00 00 00 01 00 00 01".replace("?", sb_id).replace(" ", "");
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HexDataSender sender = new HexDataSender(IP, PORT);
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sender.sendHexData(hexData);
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}
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public static void Close(String sb_id) throws Exception {
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//关
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String hexData = "16 00 34 F5 41 11 FE 82 0D 02 ? 00 00 00 00 00 00 01 00 00 00".replace("?", sb_id).replace(" ", "");
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HexDataSender sender = new HexDataSender(IP, PORT);
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sender.sendHexData(hexData);
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}
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public static void main(String[] args) throws Exception {
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Close("6D FF");
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//Thread.sleep(3000);
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//Open("6D FF");
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}
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}
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class HexDataSenderHandler extends ChannelInboundHandlerAdapter {
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private final String hexData;
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public HexDataSenderHandler(String hexData) {
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this.hexData = hexData;
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}
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@Override
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public void channelActive(ChannelHandlerContext ctx) {
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byte[] bytes = hexStringToByteArray(hexData);
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ByteBuf buffer = Unpooled.buffer(bytes.length);
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buffer.writeBytes(bytes);
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ctx.writeAndFlush(buffer);
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
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cause.printStackTrace();
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ctx.close();
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}
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private byte[] hexStringToByteArray(String hexData) {
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int len = hexData.length();
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byte[] data = new byte[len / 2];
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for (int i = 0; i < len; i += 2) {
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data[i / 2] = (byte) ((Character.digit(hexData.charAt(i), 16) << 4) +
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Character.digit(hexData.charAt(i + 1), 16));
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}
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return data;
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}
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}
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class HexDataEncoder extends MessageToByteEncoder<ByteBuf> {
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@Override
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protected void encode(ChannelHandlerContext ctx, ByteBuf msg, ByteBuf out) throws Exception {
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byte[] bytes = new byte[msg.readableBytes()];
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msg.getBytes(msg.readerIndex(), bytes);
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out.writeBytes(bytes);
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}
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}
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