生成traceId

生成traceId，规则是 服务器 IP（每段转为16机制） + 产生ID时的时间 + uuid前20位 + 当前进程号

public static String getTraceId() {
    String result = "";
    String ip = "";

    try {
        InetAddress address = InetAddress.getLocalHost();
        ip = address.getHostAddress();
    } catch (Exception var5) {
        return result;
    }

    String[] ipAddressInArray = ip.split("\\.");
    for(int i = 3; i >= 0; --i) {
        Integer id = Integer.parseInt(ipAddressInArray[3 - i]);
        result = result + String.format("%02x", id);
    }
    // 拼装时间戳及随机数
    SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS");
    result = result + simpleDateFormat.format(new Date()) + UUID.randomUUID().toString().replace("-","").substring(0,20);
    RuntimeMXBean runtime = ManagementFactory.getRuntimeMXBean();
    result = result + String.format("%05d", Integer.parseInt(runtime.getName().split("@")[0]));
    return result;
}