logclass.java

来自「GPRS数据通讯软件源码」· Java 代码 · 共 82 行

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 * 写日志文件类
 */

package documenteditor;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Administrator
 */
public class LogClass extends Thread{
    
    private SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd");
    private SimpleDateFormat df2 = new SimpleDateFormat("HH:mm:ss");
    private String path = System.getProperty("user.dir");
    private MessageQueue logQueue = null;//写消息列队
    
    public LogClass(){
        logQueue = new MessageQueue(10);
    }
    
    @Override
    public void run(){
        while(true){
            try {
                sleep(1);
                if(logQueue.size()>0){
                    String[] Strs = logQueue.Dequeue().split("~");
                    if(Strs.length>1){
                        WriteLog(Strs[0], Strs[1]);
                    }
                }
            } catch (InterruptedException ex) {
                Logger.getLogger(LogClass.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }
    
    public void SendWriteLog(String log,String LogID){
        logQueue.Enqueue(log+"~"+LogID);
    }
    
    private void WriteLog(String log,String LogID){     
        String FileName = "Log" + LogID + df.format(new Date()) + ".log";
        try {
            File f = new File(path, FileName);
            if (!f.exists()) {
                f.createNewFile();
                Date NowDate = new Date();
                //删除掉十五天以前的日志文件
                NowDate.setTime(NowDate.getTime()-15*24*60*60*1000);
                String OldFileName = "Log" + LogID + df.format(NowDate) + ".log";
                File of = new File(path, OldFileName);
                if (of.exists()) {
                    of.delete();
                }
            }
            RandomAccessFile rf = new RandomAccessFile(path+"\\"+FileName,"rw");
            rf.seek(rf.length());
            log = df2.format(new Date())+" : "+log+"\r\n";
            rf.write(log.getBytes());
            rf.close();
        } catch (FileNotFoundException ex) {
            Logger.getLogger(LogClass.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(LogClass.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}