logutil.java

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package com.zhanghao.common.util;

/**
 * <p>Title: 写日志</p>
 * <p>Description: useage: Log.getInstance().info/error</p>
 * 所有错误日志使用Log.getInstance().error()方法，写入yyyymmdd.log；
 * 调试信息使用Log.getInstance().info(,,)方法，写入yyyymmdd.log；
 * 打印16进制报文使用Log.getInstance().packDebug()方法，写入packyyyymmdd.log；
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: sunun </p>
 * @author software II
 * @version 1.0
 */

import java.io.*;
import java.util.*;

public class LogUtil {
  private static LogUtil LogInst = null;
  private static String pathStr;
  private Calendar now;
  private FileWriter fw;
  private String nameStr;

  private static int debugLevel = 3;
  private boolean fileOpen = false;

  public static LogUtil getInstance(){
    if (LogInst == null )
      LogInst  = new LogUtil(com.zhanghao.cmpp.CMPParameter.LogFilePath);
    return LogInst ;
  }

  public static void setLogPath(String logpath){
    pathStr = logpath;
  }

  public static void setDebugLevel(int i){
    debugLevel =i ;
  }

    /**
     * 构造方法.
     * @param logPath 日志路径
     */
    public LogUtil(String logPath) {
      pathStr = logPath;
      try{
        File p = new File(pathStr);
        if (!p.exists())
          p.mkdirs();

        // Get current time parameter
        now = Calendar.getInstance();
        String yyyy = String.valueOf(now.get(Calendar.YEAR));
        String mm = String.valueOf(now.get(Calendar.MONTH)+1);
        String dd = String.valueOf(now.get(Calendar.DAY_OF_MONTH));
        mm = (1==mm.length()) ? ("0"+mm) : mm;
        dd = (1==dd.length()) ? ("0"+dd) : dd;
        nameStr = yyyy + mm + dd;

        // Make today's log file full name.
        String fileName = pathStr + "/"+ nameStr + ".log";
        fw = new FileWriter(fileName,true);
        fileOpen = true;
      }catch (Exception e){
        System.out.println("Create Log :"+e.toString() );
      }
      finally{
        fwClose();
        fileOpen = false;
      }
    }

    /**
     * 将数据包msg以16进制写入日志文件.
     * @param note 说明串(说明从数据流向)
     * @param msg  数据包
     */
    public void packDebug(String note, byte[] msg) {
            writePackLog(note, msg);
    }
    /**
     * 写普通日志信息. 不判断调试标志
     * @param msg 写入内容
     * @param addtimeflag 是否在内容前添加时间
     */
    public void info(String msg,boolean addtimeflag) {
          writeToTodayLog("", msg, addtimeflag);
    }

    /**
     * 写普通日志信息. 判断调试标志
     * @param msg 写内容
     * @param addtimeflag 是否在内容前添加时间
     * @param debug 调试等级，当debug <= debugLevel(常量)输出信息
     * debug =0 :无调试信息
     * debug =1 :简单调试信息(显示处理过程)
     * debug =2 :详细调试信息(显示处理数据)
     */
    public void info(String msg,boolean addtimeflag, int debug) {
        if(debug<=debugLevel) {
              writeToTodayLog("", msg,addtimeflag);
        }
    }
    /**
     * 写普通日志信息. 判断调试标志
     * @param msg 写内容
     * @param debug 调试等级，当debug <= debugLevel输出
     */
    public void info(String msg,int debug) {
        if(debug<=debugLevel) {
              writeToTodayLog("", msg,true);
        }
    }

    /**
     * 写警告信息. 不判断调试标志
     * @param msg 写内容
     */
    public void warning(String msg) {
            writeToTodayLog("WARNING", msg,true);
    }

    /**
     * 写错误信息. 不判断调试标志
     * @param msg 写内容
     */
    public void error(String msg) {
            writeToTodayLog("ERROR", msg,true);
    }

    /**
     * 写信息入分为今天的日志文件.
     *
     * @param flag 写入标记
     * @param msg  写入内容
     */
    private synchronized void writeToTodayLog(String flag,String msg,boolean timeflag) {
            try {
                // Get current time parameter
                now = Calendar.getInstance();
                String yyyy = String.valueOf(now.get(Calendar.YEAR));
                String mm = String.valueOf(now.get(Calendar.MONTH)+1);
                String dd = String.valueOf(now.get(Calendar.DAY_OF_MONTH));
                String hh = String.valueOf(now.get(Calendar.HOUR_OF_DAY));
                String ff = String.valueOf(now.get(Calendar.MINUTE));
                String ss = String.valueOf(now.get(Calendar.SECOND));
                mm = (1==mm.length()) ? ("0"+mm) : mm;
                dd = (1==dd.length()) ? ("0"+dd) : dd;

                String yyyymmdd = yyyy + mm + dd;
                if ( ( ! yyyymmdd.equals(nameStr) )||(fileOpen==false) ) {
                        fwClose();
                        fileOpen = false;
                        nameStr = yyyymmdd;
                        String fileName = pathStr + nameStr + ".log";


                        fw = new FileWriter(fileName,true);
                        fileOpen = true;
                }

                String hhffss =  hh + ":" + ff + ":" + ss;
                if( flag != "" )
                        hhffss = flag + ": " + hhffss ;
                if(timeflag)
                  fw.write("\n\n"+ hhffss+" :  "+msg) ;
                else
                  fw.write("\n"+msg);
                  fw.flush() ;
            } catch(Exception ioe) {
                System.out.println("write To Today Log: "+ioe);
                fwClose();
                fileOpen = false;
            }
            finally{
              fwClose();
              fileOpen = false;
            }
    }
    /**
       * 写数据包入包日志文件.
       *
       * @param note 说明串
       * @param pack 数据包
       */
    private synchronized void writePackLog(String note,byte[] pack) {

            FileWriter fp = null;
            try {
              // Get current time parameter
              now = Calendar.getInstance();
              String yyyy = String.valueOf(now.get(Calendar.YEAR));
              String mm = String.valueOf(now.get(Calendar.MONTH)+1);
              String dd = String.valueOf(now.get(Calendar.DAY_OF_MONTH));
              String hh = String.valueOf(now.get(Calendar.HOUR_OF_DAY));
              String ff = String.valueOf(now.get(Calendar.MINUTE));
              String ss = String.valueOf(now.get(Calendar.SECOND));
              mm = (1==mm.length()) ? ("0"+mm) : mm;
              dd = (1==dd.length()) ? ("0"+dd) : dd;

              String yyyymmdd = yyyy + mm + dd;
              String pnameStr = "pack"+yyyymmdd;
              String fileName = pathStr + pnameStr + ".log";
              fp = new FileWriter(fileName,true);

              String hhffss =  hh + ":" + ff + ":" + ss;
              if( note != "" )
                      hhffss = note + " \t" + hhffss ;
              fp.write("\n"+hhffss +"\n");

              for( int i =0; i<= (pack.length/16) ; i++ ) {
                  for( int j =0; j<16 ; j++ ) {
                      fp.write(" ");
                      if( i*16+j < pack.length ) {
                              String sss = Integer.toHexString(pack[i*16+j]);
                              if ( sss.length()==1 )
                                      sss = " "+sss;
                              else if ( sss.length() == 8 )
                                      sss = sss.substring(6,8) ;
                              fp.write(sss);
                              //fp.write(Integer.toHexString(pack[i*8+j]) );
                      }
                      else
                              break;
                  }
                  fp.write("\n");
              }
              fp.write("\n");
              fp.close() ;

            } catch(IOException ioe) {
                System.out.println("writePackLog: "+ioe);
                try {
                        fp.close();
                } catch (Exception e) {}
            }
    }

    /**
     * 关闭日志文件
     */
    private void fwClose() {
            try {
                    fw.close();
            } catch (Exception e) {}
    }


    /**
     * main funcation used to be tested writing log file
     * @param args
     */
    public static void main(String[] args)
    {
      LogUtil  test=new LogUtil("d:/LogTest");
      test.info("test",true);
    }
}