package org.springblade.modules.netty.handle;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.SimpleChannelInboundHandler;
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import io.netty.channel.socket.DatagramPacket;
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import io.netty.util.CharsetUtil;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springblade.modules.netty.business.entity.PoliceCarEquipment;
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import org.springblade.modules.netty.business.service.PoliceCarEquipmentService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import javax.annotation.PostConstruct;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import static org.springblade.modules.netty.config.MyDecoder.hexToByte;
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import static org.springblade.modules.netty.config.MyDecoder.hexTohort;
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import static org.springblade.modules.netty.util.Hex.getDouble;
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import static org.springblade.modules.netty.util.Hex.hexStr2Str;
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/**
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* updHandler udp 服务端数据接收处理
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* @author zhongrj
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* @date 2023-02-21
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*/
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@Component
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public class UdpServerHandler extends SimpleChannelInboundHandler<DatagramPacket> {
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private Logger logger = LoggerFactory.getLogger(this.getClass());
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private static UdpServerHandler udpServerHandler;
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@Autowired
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private PoliceCarEquipmentService policeCarEquipmentService;
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@PostConstruct
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public void init() {
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udpServerHandler = this;
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udpServerHandler.policeCarEquipmentService = this.policeCarEquipmentService;
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}
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@Override
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protected void channelRead0(ChannelHandlerContext channelHandlerContext, DatagramPacket datagramPacket) throws Exception {
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// 读取收到的数据
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ByteBuf buf = (ByteBuf) datagramPacket.copy().content();
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byte[] req = new byte[buf.readableBytes()];
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buf.readBytes(req);
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String body = new String(req, CharsetUtil.UTF_8);
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// 字节转16进制字符串
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String s = bytesToHexString(req);
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//获取字符串的长度
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// int length = s.length();
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// System.out.println("数据长度>>>>>> = " + length);
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//数据解析
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dataHandler(s);
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}
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/**
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* 数据解析
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* @param s 16位字符串
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*/
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private void dataHandler(String s) {
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// s = "AAAACCCC220000000033373933343732393100000000000000000000000052D50451F77D5D406C04E275FD723C400000015F0000000507E70306103B0A";
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//创建设备对象
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PoliceCarEquipment backEquipment = new PoliceCarEquipment();
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if (s.substring(4,8).equals("CCCC")) {
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backEquipment.setStatus(1);
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}
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//断开连接
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if (s.substring(4,8).equals("FFFF")) {
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backEquipment.setStatus(0);
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}
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//截取字符串
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backEquipment.setTerminalNumber(hexStr2Str(s.substring(20, 60)));
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backEquipment.setLongitude(Double.toString(getDouble(s.substring(60, 76))));
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backEquipment.setLatitude(Double.toString(getDouble(s.substring(76, 92))));
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backEquipment.setSpeed(Short.toString(hexTohort(s.substring(92, 96))));
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backEquipment.setDirection(Short.toString(hexTohort(s.substring(96, 100))));
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backEquipment.setElevation(Short.toString(hexTohort(s.substring(100, 104))));
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backEquipment.setPrecisions(Short.toString(hexTohort(s.substring(104, 108))));
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String year = Short.toString(hexTohort(s.substring(108, 112)));
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String month = Short.toString(hexToByte(s.substring(112, 114)));
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if (Integer.parseInt(month)<10){
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month = "0" + month;
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}
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String day = Short.toString(hexToByte(s.substring(114, 116)));
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if (Integer.parseInt(day)<10){
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day = "0" + day;
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}
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String hour = Short.toString(hexToByte(s.substring(116, 118)));
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if (Integer.parseInt(hour)<10){
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hour = "0" + hour;
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}
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String minute = Short.toString(hexToByte(s.substring(118, 120)));
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if (Integer.parseInt(minute)<10){
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minute = "0" + minute;
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}
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String second = Short.toString(hexToByte(s.substring(120, 122)));
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if (Integer.parseInt(second)<10){
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second = "0" + second;
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}
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String time = year + "-" + month + "-" + day +" " + hour + ":" + minute + ":" + second;
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//时间拼接
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try {
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backEquipment.setReceiveTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").parse(time));
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} catch (ParseException e) {
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e.printStackTrace();
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}
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backEquipment.setUpdateTime(new Date());
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// 新增
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udpServerHandler.policeCarEquipmentService.save(backEquipment);
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}
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/**
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* 转换
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* @param bArray
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* @return
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*/
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public String bytesToHexString(byte[] bArray) {
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StringBuffer sb = new StringBuffer(bArray.length);
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String sTemp;
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for (int i = 0; i < bArray.length; i++) {
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sTemp = Integer.toHexString(0xFF & bArray[i]);
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if (sTemp.length() < 2)
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sb.append(0);
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sb.append(sTemp.toUpperCase());
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}
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return sb.toString();
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}
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/**
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* 捕获异常
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* @param ctx
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* @param cause
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* @throws Exception
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*/
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)throws Exception {
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logger.error("UdpServerHandler exceptionCaught"+cause.getMessage());
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System.out.println("UdpServerHandler exceptionCaught"+cause.getMessage());
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cause.printStackTrace();
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ctx.close();
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}
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/**
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* 消息没有结束的时候触发
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* @param ctx
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* @throws Exception
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*/
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@Override
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public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
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ctx.flush();
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}
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}
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