log4j 支持同时按日期和文件大小分割日志

重写源代码，可以将代码作为工具类使用：

1.Log4JDateAndSizeSplit.java

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443

/**   * Project Name:hao24-common   * File Name:Log4JDateAndSizeSplit.java   * Package Name:cn.hao24.util.spring   * Date:2016年3月31日上午11:30:22   * Copyright (c) 2016, lujie All Rights Reserved.   * */ <br> package  test /**   * ClassName:Log4JDateAndSizeSplit :log4j日志支持按照日期和大小进行切割<br/>   * Date:     2016年3月31日 上午11:30:22 <br/>   * @author   lujie   * @version    * @see        */ import  java.io.File; import  java.io.IOException; import  java.io.Writer; import  java.text.SimpleDateFormat; import  java.util.Date; import  java.util.Locale; import  java.util.TimeZone;   import  org.apache.log4j.FileAppender; import  org.apache.log4j.Layout; import  org.apache.log4j.helpers.CountingQuietWriter; import  org.apache.log4j.helpers.LogLog; import  org.apache.log4j.helpers.OptionConverter; import  org.apache.log4j.spi.LoggingEvent;   /**   *   * ClassName: Log4JDateAndSizeSplit <br/>   * Function: Log4j生成日志类重写，该类可以按照日期+指定大小分隔日志. <br/>   * date: 2016年3月31日 下午12:44:14 <br/>   * @author lujie   * @version   */ public  class  Log4JDateAndSizeSplit  extends  FileAppender {        // The code assumes that the following constants are in a increasing      // sequence.      static  final  int  TOP_OF_TROUBLE = - 1 ;        static  final  int  TOP_OF_MINUTE =  0 ;        static  final  int  TOP_OF_HOUR =  1 ;        static  final  int  HALF_DAY =  2 ;        static  final  int  TOP_OF_DAY =  3 ;        static  final  int  TOP_OF_WEEK =  4 ;        static  final  int  TOP_OF_MONTH =  5 ;        /**       * The default maximum file size is 10MB.       */      protected  long  maxFileSize =  10  *  1024  *  1024 ;        /**       * There is one backup file by default.       */      protected  int  maxBackupIndex =  1 ;        /**       * meaning daily rollover.       */      private  String datePattern =  "'.'yyyy-MM-dd" ;        /**       * "scheduledFilename" at the beginning of the next hour.       *        */      private  String scheduledFilename;        /**       * The next time we estimate a rollover should occur.       */      private  long  nextCheck = System.currentTimeMillis() -  1 ;        Date now =  new  Date();        SimpleDateFormat sdf;        RollingCalendar rc =  new  RollingCalendar();        int  checkPeriod = TOP_OF_TROUBLE;        // The gmtTimeZone is used only in computeCheckPeriod() method.      static  final  TimeZone gmtTimeZone = TimeZone.getTimeZone( "GMT" );        /**       * The default constructor does nothing.       */      public  Log4JDateAndSizeSplit()      {      }        /**       * ouput destination for this appender.       */      public  Log4JDateAndSizeSplit(Layout layout, String filename, String datePattern)  throws  IOException      {          super (layout, filename,  true );          this .datePattern = datePattern;          activateOptions();      }        /**       * being rolled over to backup files.       *        * @since 1.1       */      public  long  getMaximumFileSize()      {          return  maxFileSize;      }        /**       * being rolled over to backup files.       *        * <p>       * JavaBeans {@link java.beans.Introspector Introspector}.       *        * @see #setMaxFileSize(String)       */      public  void  setMaximumFileSize( long  maxFileSize)      {          this .maxFileSize = maxFileSize;      }        /**       * being rolled over to backup files.       *        * <p>       * the value "10KB" will be interpreted as 10240.       */      public  void  setMaxFileSize(String value)      {          maxFileSize = OptionConverter.toFileSize(value, maxFileSize +  1 );      }        /**       * Returns the value of the <b>MaxBackupIndex</b> option.       */      public  int  getMaxBackupIndex()      {          return  maxBackupIndex;      }        /**       * Set the maximum number of backup files to keep around.       *        * <p>       */      public  void  setMaxBackupIndex( int  maxBackups)      {          this .maxBackupIndex = maxBackups;      }        /**       */      public  void  setDatePattern(String pattern)      {          datePattern = pattern;      }        /** Returns the value of the <b>DatePattern</b> option. */      public  String getDatePattern()      {          return  datePattern;      }        @Override      public  void  activateOptions()      {          super .activateOptions();          if  (datePattern !=  null  && fileName !=  null )          {              now.setTime(System.currentTimeMillis());              sdf =  new  SimpleDateFormat(datePattern);              int  type = computeCheckPeriod();              printPeriodicity(type);              rc.setType(type);              File file =  new  File(fileName);              scheduledFilename = fileName + sdf.format( new  Date(file.lastModified()));            }          else          {              LogLog.error( "Either File or DatePattern options are not set for appender ["  + name +  "]." );          }      }        void  printPeriodicity( int  type)      {          switch  (type)          {          case  TOP_OF_MINUTE:              LogLog.debug( "Appender ["  + name +  "] to be rolled every minute." );              break ;          case  TOP_OF_HOUR:              LogLog.debug( "Appender ["  + name +  "] to be rolled on top of every hour." );              break ;          case  HALF_DAY:              LogLog.debug( "Appender ["  + name +  "] to be rolled at midday and midnight." );              break ;          case  TOP_OF_DAY:              LogLog.debug( "Appender ["  + name +  "] to be rolled at midnight." );              break ;          case  TOP_OF_WEEK:              LogLog.debug( "Appender ["  + name +  "] to be rolled at start of week." );              break ;          case  TOP_OF_MONTH:              LogLog.debug( "Appender ["  + name +  "] to be rolled at start of every month." );              break ;          default :              LogLog.warn( "Unknown periodicity for appender ["  + name +  "]." );          }      }        // This method computes the roll over period by looping over the      // periods, starting with the shortest, and stopping when the r0 is      // different from from r1, where r0 is the epoch formatted according      // the datePattern (supplied by the user) and r1 is the      // epoch+nextMillis(i) formatted according to datePattern. All date      // formatting is done in GMT and not local format because the test      // logic is based on comparisons relative to 1970-01-01 00:00:00      // GMT (the epoch).        int  computeCheckPeriod()      {          RollingCalendar rollingCalendar =  new  RollingCalendar(gmtTimeZone, Locale.ENGLISH);          // set sate to 1970-01-01 00:00:00 GMT          Date epoch =  new  Date( 0 );          if  (datePattern !=  null )          {              for  ( int  i = TOP_OF_MINUTE; i <= TOP_OF_MONTH; i++)              {                  SimpleDateFormat simpleDateFormat =  new  SimpleDateFormat(datePattern);                  simpleDateFormat.setTimeZone(gmtTimeZone);  // do all date                                                              // formatting in GMT                  String r0 = simpleDateFormat.format(epoch);                  rollingCalendar.setType(i);                  Date next =  new  Date(rollingCalendar.getNextCheckMillis(epoch));                  String r1 = simpleDateFormat.format(next);                  // System.out.println("Type = "+i+", r0 = "+r0+", r1 = "+r1);                  if  (r0 !=  null  && r1 !=  null  && !r0.equals(r1))                  {                      return  i;                  }              }          }          return  TOP_OF_TROUBLE;  // Deliberately head for trouble...      }        /**       * Implements the usual roll over behaviour.       *        * <p>       * If <code>MaxBackupIndex</code> is positive, then files {             *        * <p>       * If <code>MaxBackupIndex</code> is equal to zero, then the       * <code>File</code> is truncated with no backup files created.       */      public  // synchronization not necessary since doAppend is alreasy synched      void  sizeRollOver()      {          File target;          File file;            LogLog.debug( "rolling over count="  + ((CountingQuietWriter) qw).getCount());          LogLog.debug( "maxBackupIndex="  + maxBackupIndex);            String datedFilename = fileName + sdf.format(now);            if  (maxBackupIndex >  0 )          {              // Delete the oldest file, to keep Windows happy.              file =  new  File(datedFilename +  '.'  + maxBackupIndex);              if  (file.exists())                  file.delete();                // Map {(maxBackupIndex - 1), ..., 2, 1} to {maxBackupIndex, ..., 3,              // 2}              for  ( int  i = maxBackupIndex -  1 ; i >=  1 ; i--)              {                  file =  new  File(datedFilename +  "."  + i);                  if  (file.exists())                  {                      target =  new  File(datedFilename +  '.'  + (i +  1 ));                      LogLog.debug( "Renaming file "  + file +  " to "  + target);                      file.renameTo(target);                  }              }                // Rename fileName to datedFilename.1              target =  new  File(datedFilename +  "."  +  1 );                this .closeFile();  // keep windows happy.                file =  new  File(fileName);              LogLog.debug( "Renaming file "  + file +  " to "  + target);              file.renameTo(target);          }          else  if  (maxBackupIndex <  0 )          {  // infinite number of files              // find the max backup index              for  ( int  i =  1 ; i < Integer.MAX_VALUE; i++)              {                  target =  new  File(datedFilename +  "."  + i);                  if  (!target.exists())                  {  // Rename fileName to datedFilename.i                      this .closeFile();                      file =  new  File(fileName);                      file.renameTo(target);                      LogLog.debug( "Renaming file "  + file +  " to "  + target);                      break ;                  }              }          }            try          {              // This will also close the file. This is OK since multiple              // close operations are safe.              this .setFile(fileName,  false , bufferedIO, bufferSize);          }          catch  (IOException e)          {              LogLog.error( "setFile("  + fileName +  ", false) call failed." , e);          }          scheduledFilename = datedFilename;      }        @Override      public  synchronized  void  setFile(String fileName,  boolean  append,  boolean  bufferedIO,  int  bufferSize)  throws  IOException      {          super .setFile(fileName, append,  this .bufferedIO,  this .bufferSize);          if  (append)          {              File f =  new  File(fileName);              ((CountingQuietWriter) qw).setCount(f.length());          }      }        @Override      protected  void  setQWForFiles(Writer writer)      {          this .qw =  new  CountingQuietWriter(writer, errorHandler);      }        /**       * Rollover the current file to a new file.       */      void  timeRollOver()  throws  IOException      {            /* Compute filename, but only if datePattern is specified */          if  (datePattern ==  null )          {              errorHandler.error( "Missing DatePattern option in rollOver()." );              return ;          }            String datedFilename = fileName + sdf.format(now);          // It is too early to roll over because we are still within the          // bounds of the current interval. Rollover will occur once the          // next interval is reached.          if  (scheduledFilename.equals(datedFilename))          {              return ;          }            // close current file, and rename it to datedFilename          this .closeFile();            File target =  new  File(scheduledFilename);          if  (target.exists())          {              target.delete();          }            File file =  new  File(fileName);          boolean  result = file.renameTo(target);          if  (result)          {              LogLog.debug(fileName +  " -> "  + scheduledFilename);          }          else          {              LogLog.error( "Failed to rename ["  + fileName +  "] to ["  + scheduledFilename +  "]." );          }            try          {              // This will also close the file. This is OK since multiple              // close operations are safe.              super .setFile(fileName,  false ,  this .bufferedIO,  this .bufferSize);          }          catch  (IOException e)          {              errorHandler.error( "setFile("  + fileName +  ", false) call failed." );          }          scheduledFilename = datedFilename;      }        /**       *        * <p>       * rollover.       * */      @Override      protected  void  subAppend(LoggingEvent event)      {          long  n = System.currentTimeMillis();            if  (n >= nextCheck)          {              now.setTime(n);              nextCheck = rc.getNextCheckMillis(now);              try              {                  timeRollOver();              }              catch  (IOException ioe)              {                  LogLog.error( "rollOver() failed." , ioe);              }          }          else  if  ((fileName !=  null ) && ((CountingQuietWriter) qw).getCount() >= maxFileSize)          {              sizeRollOver();          }          super .subAppend(event);        } }

　　2.

1	RollingCalendar

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110

/**   * Project Name:hao24-common   * File Name:RollingCalendar.java   * Package Name:cn.hao24.util.spring   * Date:2016年3月31日上午11:41:34   * Copyright (c) 2016, lujie@hao24.cn All Rights Reserved.   * */     import  java.util.Calendar; import  java.util.Date; import  java.util.GregorianCalendar; import  java.util.Locale; import  java.util.TimeZone;   /**   * ClassName:RollingCalendar <br/>   * Date:     2016年3月31日 上午11:41:34 <br/>   * @author   lujie   * @version    * @see        */ class  RollingCalendar  extends  GregorianCalendar {      private  static  final  long  serialVersionUID = -3560331770601814177L;        int  type = MyDailyRollingFileAppender.TOP_OF_TROUBLE;        RollingCalendar()      {          super ();      }        RollingCalendar(TimeZone tz, Locale locale)      {          super (tz, locale);      }        void  setType( int  type)      {          this .type = type;      }        public  long  getNextCheckMillis(Date now)      {          return  getNextCheckDate(now).getTime();      }        public  Date getNextCheckDate(Date now)      {          this .setTime(now);            switch  (type)          {          case  MyDailyRollingFileAppender.TOP_OF_MINUTE:              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              this .add(Calendar.MINUTE,  1 );              break ;          case  MyDailyRollingFileAppender.TOP_OF_HOUR:              this .set(Calendar.MINUTE,  0 );              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              this .add(Calendar.HOUR_OF_DAY,  1 );              break ;          case  MyDailyRollingFileAppender.HALF_DAY:              this .set(Calendar.MINUTE,  0 );              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              int  hour = get(Calendar.HOUR_OF_DAY);              if  (hour <  12 )              {                  this .set(Calendar.HOUR_OF_DAY,  12 );              }              else              {                  this .set(Calendar.HOUR_OF_DAY,  0 );                  this .add(Calendar.DAY_OF_MONTH,  1 );              }              break ;          case  MyDailyRollingFileAppender.TOP_OF_DAY:              this .set(Calendar.HOUR_OF_DAY,  0 );              this .set(Calendar.MINUTE,  0 );              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              this .add(Calendar.DATE,  1 );              break ;          case  MyDailyRollingFileAppender.TOP_OF_WEEK:              this .set(Calendar.DAY_OF_WEEK, getFirstDayOfWeek());              this .set(Calendar.HOUR_OF_DAY,  0 );              this .set(Calendar.MINUTE,  0 );              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              this .add(Calendar.WEEK_OF_YEAR,  1 );              break ;          case  MyDailyRollingFileAppender.TOP_OF_MONTH:              this .set(Calendar.DATE,  1 );              this .set(Calendar.HOUR_OF_DAY,  0 );              this .set(Calendar.MINUTE,  0 );              this .set(Calendar.SECOND,  0 );              this .set(Calendar.MILLISECOND,  0 );              this .add(Calendar.MONTH,  1 );              break ;          default :              throw  new  IllegalStateException( "Unknown periodicity type." );          }          return  getTime();      } }

　　之后在配置文件中配置相关信息：

1 2 3 4 5 6 7 8 9 10 11

log4j.appender.R= test .Log4JDateAndSizeSplit log4j.appender.R.Threshold=INFO log4j.appender.R.ImmediateFlush= true log4j.appender.R.File= /xxx .log log4j.appender.R.DatePattern= '_' yyyy-MM- dd '.log' log4j.appender.R.Append= true log4j.appender.R.MaxFileSize=200MB #MaxBackupIndex=-1(not limit about file number) log4j.appender.R.MaxBackupIndex=-1 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern= %d{yyyy -MM- dd  HH:mm :ss} [%5p] - %c -%F(%L) -%m%n