代码优化

whyclj

2020-10-23 291d27a34b52911dbcfd8232f0685d34b0fc96a8

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package com.dev.data; 
 
import java.io.BufferedWriter; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.net.DatagramPacket; 
import java.net.DatagramSocket; 
import java.net.UnknownHostException; 
import java.nio.ByteBuffer; 
import java.nio.ByteOrder; 
import java.util.Date; 
 
import com.base.BaseData; 
import com.base.Com; 
import com.base.ComBase; 
import com.base.ComFn; 
 
/** 
 *     É豸ÊÚʱÏß³Ì 
 * @author LiJun 
 * 
 */ 
public class Device_Timing_Thread implements Runnable{ 
    public static Date dev_time = new Date();     
     
     
    //ÊÚʱʱ¼äºÍµ±Ç°Ê±¼ä×î´óʱ¼ä¼ä¸ô,±ÜÃâÒòΪÔÚÊÚʱʱ³öÏÖ´íÎóµÄʱ¼äÊÚʱ 
    public static final int MAX_DEVTIME_LONG = 365*24*60*60;            //ÊÚʱʱ¼äºÍµ±Ç°Ê±¼ä±ØÐëСÓÚÒ»Äê     
     
    public static final int server_port = 8888; 
    public static final int MAX_DATA_COUNT = 0x14;                    //ÊÚʱUDP±¨ÎÄÖ»ÓÐ20×Ö½Ú 
     
    @Override 
    public void run() { 
        System.out.println("Device_Timing_Thread start at "+Com.getDateTimeFormat(new Date(), Com.DTF_YMDhms)); 
         
        try { 
            byte[] data = null; 
            while(true) { 
                DatagramSocket ds = null; 
                try { 
                    data = new byte[MAX_DATA_COUNT]; 
                    DatagramPacket packet = new DatagramPacket(data, data.length); 
                    ds = new DatagramSocket(server_port); 
                    while (true) { 
                        ds.receive(packet);                     
                         
                        BaseData basedata = new BaseData(); 
                        ByteBuffer bf = ByteBuffer.allocate(20); 
                        bf.order(ByteOrder.LITTLE_ENDIAN); 
                        bf.put(data); 
                        bf.flip(); 
                        //System.out.println(ComFn.bytesToHexString(data, data.length)); 
                        if(basedata.putDeviceTimeByteBuffer(bf)) { 
                            //System.out.println(Com.getDateTimeFormat(new Date(), Com.DTF_YMDhms)); 
                            //System.out.println(Com.getDateTimeFormat(basedata.getDevTime(), Com.DTF_YMDhms)); 
                             
                            //System.out.println("¸üÐÂϵͳʱ¼ä£º"+Com.getDateTimeFormat(basedata.getDevTime(), Com.DTF_YMDhms)); 
                            long timelong = Math.abs((new Date().getTime()-basedata.getDevTime().getTime()))/1000; 
                            if(timelong < MAX_DEVTIME_LONG) {                                 
                                //¸üÐÂϵͳʱ¼ä                             
                                updateSysDateTime(Com.getDateTimeFormat(basedata.getDevTime(), Com.DTF_YMD), Com.getDateTimeFormat(basedata.getDevTime(), Com.DTF_hms)); 
                            }else { 
                                //½ÓÊÕµ½´íÎóÊÚʱʱ¼ä°ü 
                                System.out.println(packet.getSocketAddress().toString()+"´íÎóÊÚʱʱ¼ä:"+Com.getDateTimeFormat(basedata.getDevTime(), Com.DTF_YMDhms)+" at ±¾»úʱ¼ä:" + Com.getDateTimeFormat(new Date(), Com.DTF_YMDhms)); 
                            } 
                            //System.out.println(timelong); 
                        } 
                        Thread.sleep(10); 
                    }                     
                }  catch (Exception e) { 
                    Thread.sleep(1000); 
                    e.printStackTrace(); 
                } finally { 
                    //ÒâÍâÇé¿öÏÂÊÍ·Å¶Ë¿Ú 
                    if(ds != null) { 
                        try { 
                            ds.close(); 
                        } catch (Exception e) { 
                            e.printStackTrace(); 
                        } 
                    } 
                } 
            } 
        } catch (Exception e1) { 
            e1.printStackTrace(); 
        } finally { 
             
        } 
    } 
     
    /** 
     *     ÐÞ¸Äϵͳʱ¼ä 
     * yyyy-MM-dd HH:mm:ss 
     * @param DataStr_   2017-11-11   yyyy-MM-dd 
     * @param TimeStr_   11:11:11     HH:mm:ss 
     */ 
    public void updateSysDateTime(String dataStr_,String timeStr_){ 
        try { 
            String osName = System.getProperty("os.name"); 
            // Window ÏµÍ³ 
            if (osName.matches("^(?i)Windows.*$")) { 
                String cmd; 
                // ¸ñʽ£ºyyyy-MM-dd 
                cmd = " cmd /c date " + dataStr_; 
                Runtime.getRuntime().exec(cmd); 
                // ¸ñʽ HH:mm:ss 
                cmd = " cmd /c time " + timeStr_; 
                Runtime.getRuntime().exec(cmd); 
                //System.out.println("windows Ê±¼äÐÞ¸Ä"); 
            } else if (osName.matches("^(?i)Linux.*$")) { 
                // Linux ÏµÍ³ ¸ñʽ£ºyyyy-MM-dd HH:mm:ss   date -s "2017-11-11 11:11:11" 
                FileWriter excutefw = new FileWriter("/usr/updateSysTime.sh"); 
                BufferedWriter excutebw=new BufferedWriter(excutefw); 
                excutebw.write("date -s \"" + dataStr_ +" "+ timeStr_ +"\"\r\n"); 
                excutebw.close(); 
                excutefw.close(); 
                String cmd_date ="sh /usr/updateSysTime.sh"; 
                Runtime.getRuntime().exec(cmd_date); 
                System.out.println("cmd :" + cmd_date + " date :" + dataStr_ +" time :" + timeStr_); 
                //System.out.println("linux Ê±¼äÐÞ¸Ä"); 
            } else { 
                System.out.println("²Ù×÷ϵͳÎÞ·¨Ê¶±ð"); 
            } 
        } catch (IOException e) { 
            e.getMessage(); 
        } 
    } 
     
}