spring中使用quartz(注解版)

spring注解配置quartz应用

原文地址:https://www.cnblogs.com/jedjia/p/quartz.html

 

项目中会经常用到定时器,因此,其quartz的使用,我们必须要掌握。下面就以例子来讲解如何在spring中整合quartz,

使用注解配置的方式来实现定时执行任务。

一、引入jar包

    项目中需引入quartz的jar包,由于整合到spring中,肯定也引入了spring的相关jar包。

    例子中引用的是quartz-2.1.1版本,使用maven管理项目,pom文件需引入quartz依赖

  spring中使用quartz(注解版)_第1张图片

二、spring配置文件中配置 (applicationContext.xml)

  1)      xmlns和 xsi:schemaLocation配置

        xmlns:task="http://www.springframework.org/schema/task"

        xsi:schemaLocation="http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.0.xsd "

    

 2)task任务扫描注解   

  
  

 3)扫描的位置

       

     

4)写任务实现类及配置任务定时执行方式

    spring中使用quartz(注解版)_第2张图片

 

使用spring注解配置quartz,非常方便实用。

下面给出配置spring配置文件配置

    
    
        
    
    
    
    
    
    
    
    
    
        
        
        
        
    

    
    
        
        
        
        
        
    

    
    
        
        
    

    
    
        
    
    
      
      
          
          
              
              
              
              
              
              
              
              
              
              
              
              
              
              
              
          
      
  
      
      
          
          
      
    
   
    

同时给出quartz的CronExpression类的源码,可以知道并理解怎样去配置自己想要的定时执行任务方式

/*
 * All content copyright Terracotta, Inc., unless otherwise indicated. All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 
 * use this file except in compliance with the License. You may obtain a copy 
 * of the License at 
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0 
 *   
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
 * License for the specific language governing permissions and limitations 
 * under the License.
 * 
 */

package org.quartz;

import java.io.Serializable;
import java.text.ParseException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import java.util.SortedSet;
import java.util.StringTokenizer;
import java.util.TimeZone;
import java.util.TreeSet;

/**
 * Provides a parser and evaluator for unix-like cron expressions. Cron 
 * expressions provide the ability to specify complex time combinations such as
 * "At 8:00am every Monday through Friday" or "At 1:30am every 
 * last Friday of the month". 
 * 

* Cron expressions are comprised of 6 required fields and one optional field * separated by white space. The fields respectively are described as follows: * *

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Field Name Allowed Values Allowed Special Characters
Seconds  * 0-59  * , - * /
Minutes  * 0-59  * , - * /
Hours  * 0-23  * , - * /
Day-of-month  * 1-31  * , - * ? / L W
Month  * 1-12 or JAN-DEC  * , - * /
Day-of-Week  * 1-7 or SUN-SAT  * , - * ? / L #
Year (Optional)  * empty, 1970-2199  * , - * /
*

* The '*' character is used to specify all values. For example, "*" * in the minute field means "every minute". *

* The '?' character is allowed for the day-of-month and day-of-week fields. It * is used to specify 'no specific value'. This is useful when you need to * specify something in one of the two fields, but not the other. *

* The '-' character is used to specify ranges For example "10-12" in * the hour field means "the hours 10, 11 and 12". *

* The ',' character is used to specify additional values. For example * "MON,WED,FRI" in the day-of-week field means "the days Monday, * Wednesday, and Friday". *

* The '/' character is used to specify increments. For example "0/15" * in the seconds field means "the seconds 0, 15, 30, and 45". And * "5/15" in the seconds field means "the seconds 5, 20, 35, and * 50". Specifying '*' before the '/' is equivalent to specifying 0 is * the value to start with. Essentially, for each field in the expression, there * is a set of numbers that can be turned on or off. For seconds and minutes, * the numbers range from 0 to 59. For hours 0 to 23, for days of the month 0 to * 31, and for months 1 to 12. The "/" character simply helps you turn * on every "nth" value in the given set. Thus "7/6" in the * month field only turns on month "7", it does NOT mean every 6th * month, please note that subtlety. *

* The 'L' character is allowed for the day-of-month and day-of-week fields. * This character is short-hand for "last", but it has different * meaning in each of the two fields. For example, the value "L" in * the day-of-month field means "the last day of the month" - day 31 * for January, day 28 for February on non-leap years. If used in the * day-of-week field by itself, it simply means "7" or * "SAT". But if used in the day-of-week field after another value, it * means "the last xxx day of the month" - for example "6L" * means "the last friday of the month". You can also specify an offset * from the last day of the month, such as "L-3" which would mean the third-to-last * day of the calendar month. When using the 'L' option, it is important not to * specify lists, or ranges of values, as you'll get confusing/unexpected results. *

* The 'W' character is allowed for the day-of-month field. This character * is used to specify the weekday (Monday-Friday) nearest the given day. As an * example, if you were to specify "15W" as the value for the * day-of-month field, the meaning is: "the nearest weekday to the 15th of * the month". So if the 15th is a Saturday, the trigger will fire on * Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the * 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. * However if you specify "1W" as the value for day-of-month, and the * 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not * 'jump' over the boundary of a month's days. The 'W' character can only be * specified when the day-of-month is a single day, not a range or list of days. *

* The 'L' and 'W' characters can also be combined for the day-of-month * expression to yield 'LW', which translates to "last weekday of the * month". *

* The '#' character is allowed for the day-of-week field. This character is * used to specify "the nth" XXX day of the month. For example, the * value of "6#3" in the day-of-week field means the third Friday of * the month (day 6 = Friday and "#3" = the 3rd one in the month). * Other examples: "2#1" = the first Monday of the month and * "4#5" = the fifth Wednesday of the month. Note that if you specify * "#5" and there is not 5 of the given day-of-week in the month, then * no firing will occur that month. If the '#' character is used, there can * only be one expression in the day-of-week field ("3#1,6#3" is * not valid, since there are two expressions). *

* *

* The legal characters and the names of months and days of the week are not * case sensitive. * *

* NOTES: *

    *
  • Support for specifying both a day-of-week and a day-of-month value is * not complete (you'll need to use the '?' character in one of these fields). *
  • *
  • Overflowing ranges is supported - that is, having a larger number on * the left hand side than the right. You might do 22-2 to catch 10 o'clock * at night until 2 o'clock in the morning, or you might have NOV-FEB. It is * very important to note that overuse of overflowing ranges creates ranges * that don't make sense and no effort has been made to determine which * interpretation CronExpression chooses. An example would be * "0 0 14-6 ? * FRI-MON".
  • *
*

* * * @author Sharada Jambula, James House * @author Contributions from Mads Henderson * @author Refactoring from CronTrigger to CronExpression by Aaron Craven */ public final class CronExpression implements Serializable, Cloneable { private static final long serialVersionUID = 12423409423L; protected static final int SECOND = 0; protected static final int MINUTE = 1; protected static final int HOUR = 2; protected static final int DAY_OF_MONTH = 3; protected static final int MONTH = 4; protected static final int DAY_OF_WEEK = 5; protected static final int YEAR = 6; protected static final int ALL_SPEC_INT = 99; // '*' protected static final int NO_SPEC_INT = 98; // '?' protected static final Integer ALL_SPEC = ALL_SPEC_INT; protected static final Integer NO_SPEC = NO_SPEC_INT; protected static final Map monthMap = new HashMap(20); protected static final Map dayMap = new HashMap(60); static { monthMap.put("JAN", 0); monthMap.put("FEB", 1); monthMap.put("MAR", 2); monthMap.put("APR", 3); monthMap.put("MAY", 4); monthMap.put("JUN", 5); monthMap.put("JUL", 6); monthMap.put("AUG", 7); monthMap.put("SEP", 8); monthMap.put("OCT", 9); monthMap.put("NOV", 10); monthMap.put("DEC", 11); dayMap.put("SUN", 1); dayMap.put("MON", 2); dayMap.put("TUE", 3); dayMap.put("WED", 4); dayMap.put("THU", 5); dayMap.put("FRI", 6); dayMap.put("SAT", 7); } private final String cronExpression; private TimeZone timeZone = null; protected transient TreeSet seconds; protected transient TreeSet minutes; protected transient TreeSet hours; protected transient TreeSet daysOfMonth; protected transient TreeSet months; protected transient TreeSet daysOfWeek; protected transient TreeSet years; protected transient boolean lastdayOfWeek = false; protected transient int nthdayOfWeek = 0; protected transient boolean lastdayOfMonth = false; protected transient boolean nearestWeekday = false; protected transient int lastdayOffset = 0; protected transient boolean expressionParsed = false; public static final int MAX_YEAR = Calendar.getInstance().get(Calendar.YEAR) + 100; /** * Constructs a new CronExpression based on the specified * parameter. * * @param cronExpression String representation of the cron expression the * new object should represent * @throws java.text.ParseException * if the string expression cannot be parsed into a valid * CronExpression */ public CronExpression(String cronExpression) throws ParseException { if (cronExpression == null) { throw new IllegalArgumentException("cronExpression cannot be null"); } this.cronExpression = cronExpression.toUpperCase(Locale.US); buildExpression(this.cronExpression); } /** * Constructs a new {@code CronExpression} as a copy of an existing * instance. * * @param expression * The existing cron expression to be copied */ public CronExpression(CronExpression expression) { /* * We don't call the other constructor here since we need to swallow the * ParseException. We also elide some of the sanity checking as it is * not logically trippable. */ this.cronExpression = expression.getCronExpression(); try { buildExpression(cronExpression); } catch (ParseException ex) { throw new AssertionError(); } if (expression.getTimeZone() != null) { setTimeZone((TimeZone) expression.getTimeZone().clone()); } } /** * Indicates whether the given date satisfies the cron expression. Note that * milliseconds are ignored, so two Dates falling on different milliseconds * of the same second will always have the same result here. * * @param date the date to evaluate * @return a boolean indicating whether the given date satisfies the cron * expression */ public boolean isSatisfiedBy(Date date) { Calendar testDateCal = Calendar.getInstance(getTimeZone()); testDateCal.setTime(date); testDateCal.set(Calendar.MILLISECOND, 0); Date originalDate = testDateCal.getTime(); testDateCal.add(Calendar.SECOND, -1); Date timeAfter = getTimeAfter(testDateCal.getTime()); return ((timeAfter != null) && (timeAfter.equals(originalDate))); } /** * Returns the next date/time after the given date/time which * satisfies the cron expression. * * @param date the date/time at which to begin the search for the next valid * date/time * @return the next valid date/time */ public Date getNextValidTimeAfter(Date date) { return getTimeAfter(date); } /** * Returns the next date/time after the given date/time which does * not satisfy the expression * * @param date the date/time at which to begin the search for the next * invalid date/time * @return the next valid date/time */ public Date getNextInvalidTimeAfter(Date date) { long difference = 1000; //move back to the nearest second so differences will be accurate Calendar adjustCal = Calendar.getInstance(getTimeZone()); adjustCal.setTime(date); adjustCal.set(Calendar.MILLISECOND, 0); Date lastDate = adjustCal.getTime(); Date newDate; //FUTURE_TODO: (QUARTZ-481) IMPROVE THIS! The following is a BAD solution to this problem. Performance will be very bad here, depending on the cron expression. It is, however A solution. //keep getting the next included time until it's farther than one second // apart. At that point, lastDate is the last valid fire time. We return // the second immediately following it. while (difference == 1000) { newDate = getTimeAfter(lastDate); if(newDate == null) break; difference = newDate.getTime() - lastDate.getTime(); if (difference == 1000) { lastDate = newDate; } } return new Date(lastDate.getTime() + 1000); } /** * Returns the time zone for which this CronExpression * will be resolved. */ public TimeZone getTimeZone() { if (timeZone == null) { timeZone = TimeZone.getDefault(); } return timeZone; } /** * Sets the time zone for which this CronExpression * will be resolved. */ public void setTimeZone(TimeZone timeZone) { this.timeZone = timeZone; } /** * Returns the string representation of the CronExpression * * @return a string representation of the CronExpression */ @Override public String toString() { return cronExpression; } /** * Indicates whether the specified cron expression can be parsed into a * valid cron expression * * @param cronExpression the expression to evaluate * @return a boolean indicating whether the given expression is a valid cron * expression */ public static boolean isValidExpression(String cronExpression) { try { new CronExpression(cronExpression); } catch (ParseException pe) { return false; } return true; } public static void validateExpression(String cronExpression) throws ParseException { new CronExpression(cronExpression); } //////////////////////////////////////////////////////////////////////////// // // Expression Parsing Functions // //////////////////////////////////////////////////////////////////////////// protected void buildExpression(String expression) throws ParseException { expressionParsed = true; try { if (seconds == null) { seconds = new TreeSet(); } if (minutes == null) { minutes = new TreeSet(); } if (hours == null) { hours = new TreeSet(); } if (daysOfMonth == null) { daysOfMonth = new TreeSet(); } if (months == null) { months = new TreeSet(); } if (daysOfWeek == null) { daysOfWeek = new TreeSet(); } if (years == null) { years = new TreeSet(); } int exprOn = SECOND; StringTokenizer exprsTok = new StringTokenizer(expression, " \t", false); while (exprsTok.hasMoreTokens() && exprOn <= YEAR) { String expr = exprsTok.nextToken().trim(); // throw an exception if L is used with other days of the month if(exprOn == DAY_OF_MONTH && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) { throw new ParseException("Support for specifying 'L' and 'LW' with other days of the month is not implemented", -1); } // throw an exception if L is used with other days of the week if(exprOn == DAY_OF_WEEK && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) { throw new ParseException("Support for specifying 'L' with other days of the week is not implemented", -1); } if(exprOn == DAY_OF_WEEK && expr.indexOf('#') != -1 && expr.indexOf('#', expr.indexOf('#') +1) != -1) { throw new ParseException("Support for specifying multiple \"nth\" days is not implemented.", -1); } StringTokenizer vTok = new StringTokenizer(expr, ","); while (vTok.hasMoreTokens()) { String v = vTok.nextToken(); storeExpressionVals(0, v, exprOn); } exprOn++; } if (exprOn <= DAY_OF_WEEK) { throw new ParseException("Unexpected end of expression.", expression.length()); } if (exprOn <= YEAR) { storeExpressionVals(0, "*", YEAR); } TreeSet dow = getSet(DAY_OF_WEEK); TreeSet dom = getSet(DAY_OF_MONTH); // Copying the logic from the UnsupportedOperationException below boolean dayOfMSpec = !dom.contains(NO_SPEC); boolean dayOfWSpec = !dow.contains(NO_SPEC); if (!dayOfMSpec || dayOfWSpec) { if (!dayOfWSpec || dayOfMSpec) { throw new ParseException( "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.", 0); } } } catch (ParseException pe) { throw pe; } catch (Exception e) { throw new ParseException("Illegal cron expression format (" + e.toString() + ")", 0); } } protected int storeExpressionVals(int pos, String s, int type) throws ParseException { int incr = 0; int i = skipWhiteSpace(pos, s); if (i >= s.length()) { return i; } char c = s.charAt(i); if ((c >= 'A') && (c <= 'Z') && (!s.equals("L")) && (!s.equals("LW")) && (!s.matches("^L-[0-9]*[W]?"))) { String sub = s.substring(i, i + 3); int sval = -1; int eval = -1; if (type == MONTH) { sval = getMonthNumber(sub) + 1; if (sval <= 0) { throw new ParseException("Invalid Month value: '" + sub + "'", i); } if (s.length() > i + 3) { c = s.charAt(i + 3); if (c == '-') { i += 4; sub = s.substring(i, i + 3); eval = getMonthNumber(sub) + 1; if (eval <= 0) { throw new ParseException("Invalid Month value: '" + sub + "'", i); } } } } else if (type == DAY_OF_WEEK) { sval = getDayOfWeekNumber(sub); if (sval < 0) { throw new ParseException("Invalid Day-of-Week value: '" + sub + "'", i); } if (s.length() > i + 3) { c = s.charAt(i + 3); if (c == '-') { i += 4; sub = s.substring(i, i + 3); eval = getDayOfWeekNumber(sub); if (eval < 0) { throw new ParseException( "Invalid Day-of-Week value: '" + sub + "'", i); } } else if (c == '#') { try { i += 4; nthdayOfWeek = Integer.parseInt(s.substring(i)); if (nthdayOfWeek < 1 || nthdayOfWeek > 5) { throw new Exception(); } } catch (Exception e) { throw new ParseException( "A numeric value between 1 and 5 must follow the '#' option", i); } } else if (c == 'L') { lastdayOfWeek = true; i++; } } } else { throw new ParseException( "Illegal characters for this position: '" + sub + "'", i); } if (eval != -1) { incr = 1; } addToSet(sval, eval, incr, type); return (i + 3); } if (c == '?') { i++; if ((i + 1) < s.length() && (s.charAt(i) != ' ' && s.charAt(i + 1) != '\t')) { throw new ParseException("Illegal character after '?': " + s.charAt(i), i); } if (type != DAY_OF_WEEK && type != DAY_OF_MONTH) { throw new ParseException( "'?' can only be specfied for Day-of-Month or Day-of-Week.", i); } if (type == DAY_OF_WEEK && !lastdayOfMonth) { int val = daysOfMonth.last(); if (val == NO_SPEC_INT) { throw new ParseException( "'?' can only be specfied for Day-of-Month -OR- Day-of-Week.", i); } } addToSet(NO_SPEC_INT, -1, 0, type); return i; } if (c == '*' || c == '/') { if (c == '*' && (i + 1) >= s.length()) { addToSet(ALL_SPEC_INT, -1, incr, type); return i + 1; } else if (c == '/' && ((i + 1) >= s.length() || s.charAt(i + 1) == ' ' || s .charAt(i + 1) == '\t')) { throw new ParseException("'/' must be followed by an integer.", i); } else if (c == '*') { i++; } c = s.charAt(i); if (c == '/') { // is an increment specified? i++; if (i >= s.length()) { throw new ParseException("Unexpected end of string.", i); } incr = getNumericValue(s, i); i++; if (incr > 10) { i++; } if (incr > 59 && (type == SECOND || type == MINUTE)) { throw new ParseException("Increment > 60 : " + incr, i); } else if (incr > 23 && (type == HOUR)) { throw new ParseException("Increment > 24 : " + incr, i); } else if (incr > 31 && (type == DAY_OF_MONTH)) { throw new ParseException("Increment > 31 : " + incr, i); } else if (incr > 7 && (type == DAY_OF_WEEK)) { throw new ParseException("Increment > 7 : " + incr, i); } else if (incr > 12 && (type == MONTH)) { throw new ParseException("Increment > 12 : " + incr, i); } } else { incr = 1; } addToSet(ALL_SPEC_INT, -1, incr, type); return i; } else if (c == 'L') { i++; if (type == DAY_OF_MONTH) { lastdayOfMonth = true; } if (type == DAY_OF_WEEK) { addToSet(7, 7, 0, type); } if(type == DAY_OF_MONTH && s.length() > i) { c = s.charAt(i); if(c == '-') { ValueSet vs = getValue(0, s, i+1); lastdayOffset = vs.value; if(lastdayOffset > 30) throw new ParseException("Offset from last day must be <= 30", i+1); i = vs.pos; } if(s.length() > i) { c = s.charAt(i); if(c == 'W') { nearestWeekday = true; i++; } } } return i; } else if (c >= '0' && c <= '9') { int val = Integer.parseInt(String.valueOf(c)); i++; if (i >= s.length()) { addToSet(val, -1, -1, type); } else { c = s.charAt(i); if (c >= '0' && c <= '9') { ValueSet vs = getValue(val, s, i); val = vs.value; i = vs.pos; } i = checkNext(i, s, val, type); return i; } } else { throw new ParseException("Unexpected character: " + c, i); } return i; } protected int checkNext(int pos, String s, int val, int type) throws ParseException { int end = -1; int i = pos; if (i >= s.length()) { addToSet(val, end, -1, type); return i; } char c = s.charAt(pos); if (c == 'L') { if (type == DAY_OF_WEEK) { if(val < 1 || val > 7) throw new ParseException("Day-of-Week values must be between 1 and 7", -1); lastdayOfWeek = true; } else { throw new ParseException("'L' option is not valid here. (pos=" + i + ")", i); } TreeSet set = getSet(type); set.add(val); i++; return i; } if (c == 'W') { if (type == DAY_OF_MONTH) { nearestWeekday = true; } else { throw new ParseException("'W' option is not valid here. (pos=" + i + ")", i); } if(val > 31) throw new ParseException("The 'W' option does not make sense with values larger than 31 (max number of days in a month)", i); TreeSet set = getSet(type); set.add(val); i++; return i; } if (c == '#') { if (type != DAY_OF_WEEK) { throw new ParseException("'#' option is not valid here. (pos=" + i + ")", i); } i++; try { nthdayOfWeek = Integer.parseInt(s.substring(i)); if (nthdayOfWeek < 1 || nthdayOfWeek > 5) { throw new Exception(); } } catch (Exception e) { throw new ParseException( "A numeric value between 1 and 5 must follow the '#' option", i); } TreeSet set = getSet(type); set.add(val); i++; return i; } if (c == '-') { i++; c = s.charAt(i); int v = Integer.parseInt(String.valueOf(c)); end = v; i++; if (i >= s.length()) { addToSet(val, end, 1, type); return i; } c = s.charAt(i); if (c >= '0' && c <= '9') { ValueSet vs = getValue(v, s, i); end = vs.value; i = vs.pos; } if (i < s.length() && ((c = s.charAt(i)) == '/')) { i++; c = s.charAt(i); int v2 = Integer.parseInt(String.valueOf(c)); i++; if (i >= s.length()) { addToSet(val, end, v2, type); return i; } c = s.charAt(i); if (c >= '0' && c <= '9') { ValueSet vs = getValue(v2, s, i); int v3 = vs.value; addToSet(val, end, v3, type); i = vs.pos; return i; } else { addToSet(val, end, v2, type); return i; } } else { addToSet(val, end, 1, type); return i; } } if (c == '/') { i++; c = s.charAt(i); int v2 = Integer.parseInt(String.valueOf(c)); i++; if (i >= s.length()) { addToSet(val, end, v2, type); return i; } c = s.charAt(i); if (c >= '0' && c <= '9') { ValueSet vs = getValue(v2, s, i); int v3 = vs.value; addToSet(val, end, v3, type); i = vs.pos; return i; } else { throw new ParseException("Unexpected character '" + c + "' after '/'", i); } } addToSet(val, end, 0, type); i++; return i; } public String getCronExpression() { return cronExpression; } public String getExpressionSummary() { StringBuilder buf = new StringBuilder(); buf.append("seconds: "); buf.append(getExpressionSetSummary(seconds)); buf.append("\n"); buf.append("minutes: "); buf.append(getExpressionSetSummary(minutes)); buf.append("\n"); buf.append("hours: "); buf.append(getExpressionSetSummary(hours)); buf.append("\n"); buf.append("daysOfMonth: "); buf.append(getExpressionSetSummary(daysOfMonth)); buf.append("\n"); buf.append("months: "); buf.append(getExpressionSetSummary(months)); buf.append("\n"); buf.append("daysOfWeek: "); buf.append(getExpressionSetSummary(daysOfWeek)); buf.append("\n"); buf.append("lastdayOfWeek: "); buf.append(lastdayOfWeek); buf.append("\n"); buf.append("nearestWeekday: "); buf.append(nearestWeekday); buf.append("\n"); buf.append("NthDayOfWeek: "); buf.append(nthdayOfWeek); buf.append("\n"); buf.append("lastdayOfMonth: "); buf.append(lastdayOfMonth); buf.append("\n"); buf.append("years: "); buf.append(getExpressionSetSummary(years)); buf.append("\n"); return buf.toString(); } protected String getExpressionSetSummary(java.util.Set set) { if (set.contains(NO_SPEC)) { return "?"; } if (set.contains(ALL_SPEC)) { return "*"; } StringBuilder buf = new StringBuilder(); Iterator itr = set.iterator(); boolean first = true; while (itr.hasNext()) { Integer iVal = itr.next(); String val = iVal.toString(); if (!first) { buf.append(","); } buf.append(val); first = false; } return buf.toString(); } protected String getExpressionSetSummary(java.util.ArrayList list) { if (list.contains(NO_SPEC)) { return "?"; } if (list.contains(ALL_SPEC)) { return "*"; } StringBuilder buf = new StringBuilder(); Iterator itr = list.iterator(); boolean first = true; while (itr.hasNext()) { Integer iVal = itr.next(); String val = iVal.toString(); if (!first) { buf.append(","); } buf.append(val); first = false; } return buf.toString(); } protected int skipWhiteSpace(int i, String s) { for (; i < s.length() && (s.charAt(i) == ' ' || s.charAt(i) == '\t'); i++) { ; } return i; } protected int findNextWhiteSpace(int i, String s) { for (; i < s.length() && (s.charAt(i) != ' ' || s.charAt(i) != '\t'); i++) { ; } return i; } protected void addToSet(int val, int end, int incr, int type) throws ParseException { TreeSet set = getSet(type); if (type == SECOND || type == MINUTE) { if ((val < 0 || val > 59 || end > 59) && (val != ALL_SPEC_INT)) { throw new ParseException( "Minute and Second values must be between 0 and 59", -1); } } else if (type == HOUR) { if ((val < 0 || val > 23 || end > 23) && (val != ALL_SPEC_INT)) { throw new ParseException( "Hour values must be between 0 and 23", -1); } } else if (type == DAY_OF_MONTH) { if ((val < 1 || val > 31 || end > 31) && (val != ALL_SPEC_INT) && (val != NO_SPEC_INT)) { throw new ParseException( "Day of month values must be between 1 and 31", -1); } } else if (type == MONTH) { if ((val < 1 || val > 12 || end > 12) && (val != ALL_SPEC_INT)) { throw new ParseException( "Month values must be between 1 and 12", -1); } } else if (type == DAY_OF_WEEK) { if ((val == 0 || val > 7 || end > 7) && (val != ALL_SPEC_INT) && (val != NO_SPEC_INT)) { throw new ParseException( "Day-of-Week values must be between 1 and 7", -1); } } if ((incr == 0 || incr == -1) && val != ALL_SPEC_INT) { if (val != -1) { set.add(val); } else { set.add(NO_SPEC); } return; } int startAt = val; int stopAt = end; if (val == ALL_SPEC_INT && incr <= 0) { incr = 1; set.add(ALL_SPEC); // put in a marker, but also fill values } if (type == SECOND || type == MINUTE) { if (stopAt == -1) { stopAt = 59; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 0; } } else if (type == HOUR) { if (stopAt == -1) { stopAt = 23; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 0; } } else if (type == DAY_OF_MONTH) { if (stopAt == -1) { stopAt = 31; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 1; } } else if (type == MONTH) { if (stopAt == -1) { stopAt = 12; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 1; } } else if (type == DAY_OF_WEEK) { if (stopAt == -1) { stopAt = 7; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 1; } } else if (type == YEAR) { if (stopAt == -1) { stopAt = MAX_YEAR; } if (startAt == -1 || startAt == ALL_SPEC_INT) { startAt = 1970; } } // if the end of the range is before the start, then we need to overflow into // the next day, month etc. This is done by adding the maximum amount for that // type, and using modulus max to determine the value being added. int max = -1; if (stopAt < startAt) { switch (type) { case SECOND : max = 60; break; case MINUTE : max = 60; break; case HOUR : max = 24; break; case MONTH : max = 12; break; case DAY_OF_WEEK : max = 7; break; case DAY_OF_MONTH : max = 31; break; case YEAR : throw new IllegalArgumentException("Start year must be less than stop year"); default : throw new IllegalArgumentException("Unexpected type encountered"); } stopAt += max; } for (int i = startAt; i <= stopAt; i += incr) { if (max == -1) { // ie: there's no max to overflow over set.add(i); } else { // take the modulus to get the real value int i2 = i % max; // 1-indexed ranges should not include 0, and should include their max if (i2 == 0 && (type == MONTH || type == DAY_OF_WEEK || type == DAY_OF_MONTH) ) { i2 = max; } set.add(i2); } } } TreeSet getSet(int type) { switch (type) { case SECOND: return seconds; case MINUTE: return minutes; case HOUR: return hours; case DAY_OF_MONTH: return daysOfMonth; case MONTH: return months; case DAY_OF_WEEK: return daysOfWeek; case YEAR: return years; default: return null; } } protected ValueSet getValue(int v, String s, int i) { char c = s.charAt(i); StringBuilder s1 = new StringBuilder(String.valueOf(v)); while (c >= '0' && c <= '9') { s1.append(c); i++; if (i >= s.length()) { break; } c = s.charAt(i); } ValueSet val = new ValueSet(); val.pos = (i < s.length()) ? i : i + 1; val.value = Integer.parseInt(s1.toString()); return val; } protected int getNumericValue(String s, int i) { int endOfVal = findNextWhiteSpace(i, s); String val = s.substring(i, endOfVal); return Integer.parseInt(val); } protected int getMonthNumber(String s) { Integer integer = monthMap.get(s); if (integer == null) { return -1; } return integer; } protected int getDayOfWeekNumber(String s) { Integer integer = dayMap.get(s); if (integer == null) { return -1; } return integer; } //////////////////////////////////////////////////////////////////////////// // // Computation Functions // //////////////////////////////////////////////////////////////////////////// public Date getTimeAfter(Date afterTime) { // Computation is based on Gregorian year only. Calendar cl = new java.util.GregorianCalendar(getTimeZone()); // move ahead one second, since we're computing the time *after* the // given time afterTime = new Date(afterTime.getTime() + 1000); // CronTrigger does not deal with milliseconds cl.setTime(afterTime); cl.set(Calendar.MILLISECOND, 0); boolean gotOne = false; // loop until we've computed the next time, or we've past the endTime while (!gotOne) { //if (endTime != null && cl.getTime().after(endTime)) return null; if(cl.get(Calendar.YEAR) > 2999) { // prevent endless loop... return null; } SortedSet st = null; int t = 0; int sec = cl.get(Calendar.SECOND); int min = cl.get(Calendar.MINUTE); // get second................................................. st = seconds.tailSet(sec); if (st != null && st.size() != 0) { sec = st.first(); } else { sec = seconds.first(); min++; cl.set(Calendar.MINUTE, min); } cl.set(Calendar.SECOND, sec); min = cl.get(Calendar.MINUTE); int hr = cl.get(Calendar.HOUR_OF_DAY); t = -1; // get minute................................................. st = minutes.tailSet(min); if (st != null && st.size() != 0) { t = min; min = st.first(); } else { min = minutes.first(); hr++; } if (min != t) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, min); setCalendarHour(cl, hr); continue; } cl.set(Calendar.MINUTE, min); hr = cl.get(Calendar.HOUR_OF_DAY); int day = cl.get(Calendar.DAY_OF_MONTH); t = -1; // get hour................................................... st = hours.tailSet(hr); if (st != null && st.size() != 0) { t = hr; hr = st.first(); } else { hr = hours.first(); day++; } if (hr != t) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.DAY_OF_MONTH, day); setCalendarHour(cl, hr); continue; } cl.set(Calendar.HOUR_OF_DAY, hr); day = cl.get(Calendar.DAY_OF_MONTH); int mon = cl.get(Calendar.MONTH) + 1; // '+ 1' because calendar is 0-based for this field, and we are // 1-based t = -1; int tmon = mon; // get day................................................... boolean dayOfMSpec = !daysOfMonth.contains(NO_SPEC); boolean dayOfWSpec = !daysOfWeek.contains(NO_SPEC); if (dayOfMSpec && !dayOfWSpec) { // get day by day of month rule st = daysOfMonth.tailSet(day); if (lastdayOfMonth) { if(!nearestWeekday) { t = day; day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); day -= lastdayOffset; if(t > day) { mon++; if(mon > 12) { mon = 1; tmon = 3333; // ensure test of mon != tmon further below fails cl.add(Calendar.YEAR, 1); } day = 1; } } else { t = day; day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); day -= lastdayOffset; java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone()); tcal.set(Calendar.SECOND, 0); tcal.set(Calendar.MINUTE, 0); tcal.set(Calendar.HOUR_OF_DAY, 0); tcal.set(Calendar.DAY_OF_MONTH, day); tcal.set(Calendar.MONTH, mon - 1); tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR)); int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); int dow = tcal.get(Calendar.DAY_OF_WEEK); if(dow == Calendar.SATURDAY && day == 1) { day += 2; } else if(dow == Calendar.SATURDAY) { day -= 1; } else if(dow == Calendar.SUNDAY && day == ldom) { day -= 2; } else if(dow == Calendar.SUNDAY) { day += 1; } tcal.set(Calendar.SECOND, sec); tcal.set(Calendar.MINUTE, min); tcal.set(Calendar.HOUR_OF_DAY, hr); tcal.set(Calendar.DAY_OF_MONTH, day); tcal.set(Calendar.MONTH, mon - 1); Date nTime = tcal.getTime(); if(nTime.before(afterTime)) { day = 1; mon++; } } } else if(nearestWeekday) { t = day; day = daysOfMonth.first(); java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone()); tcal.set(Calendar.SECOND, 0); tcal.set(Calendar.MINUTE, 0); tcal.set(Calendar.HOUR_OF_DAY, 0); tcal.set(Calendar.DAY_OF_MONTH, day); tcal.set(Calendar.MONTH, mon - 1); tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR)); int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); int dow = tcal.get(Calendar.DAY_OF_WEEK); if(dow == Calendar.SATURDAY && day == 1) { day += 2; } else if(dow == Calendar.SATURDAY) { day -= 1; } else if(dow == Calendar.SUNDAY && day == ldom) { day -= 2; } else if(dow == Calendar.SUNDAY) { day += 1; } tcal.set(Calendar.SECOND, sec); tcal.set(Calendar.MINUTE, min); tcal.set(Calendar.HOUR_OF_DAY, hr); tcal.set(Calendar.DAY_OF_MONTH, day); tcal.set(Calendar.MONTH, mon - 1); Date nTime = tcal.getTime(); if(nTime.before(afterTime)) { day = daysOfMonth.first(); mon++; } } else if (st != null && st.size() != 0) { t = day; day = st.first(); // make sure we don't over-run a short month, such as february int lastDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); if (day > lastDay) { day = daysOfMonth.first(); mon++; } } else { day = daysOfMonth.first(); mon++; } if (day != t || mon != tmon) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, day); cl.set(Calendar.MONTH, mon - 1); // '- 1' because calendar is 0-based for this field, and we // are 1-based continue; } } else if (dayOfWSpec && !dayOfMSpec) { // get day by day of week rule if (lastdayOfWeek) { // are we looking for the last XXX day of // the month? int dow = daysOfWeek.first(); // desired // d-o-w int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w int daysToAdd = 0; if (cDow < dow) { daysToAdd = dow - cDow; } if (cDow > dow) { daysToAdd = dow + (7 - cDow); } int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); if (day + daysToAdd > lDay) { // did we already miss the // last one? cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, 1); cl.set(Calendar.MONTH, mon); // no '- 1' here because we are promoting the month continue; } // find date of last occurrence of this day in this month... while ((day + daysToAdd + 7) <= lDay) { daysToAdd += 7; } day += daysToAdd; if (daysToAdd > 0) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, day); cl.set(Calendar.MONTH, mon - 1); // '- 1' here because we are not promoting the month continue; } } else if (nthdayOfWeek != 0) { // are we looking for the Nth XXX day in the month? int dow = daysOfWeek.first(); // desired // d-o-w int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w int daysToAdd = 0; if (cDow < dow) { daysToAdd = dow - cDow; } else if (cDow > dow) { daysToAdd = dow + (7 - cDow); } boolean dayShifted = false; if (daysToAdd > 0) { dayShifted = true; } day += daysToAdd; int weekOfMonth = day / 7; if (day % 7 > 0) { weekOfMonth++; } daysToAdd = (nthdayOfWeek - weekOfMonth) * 7; day += daysToAdd; if (daysToAdd < 0 || day > getLastDayOfMonth(mon, cl .get(Calendar.YEAR))) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, 1); cl.set(Calendar.MONTH, mon); // no '- 1' here because we are promoting the month continue; } else if (daysToAdd > 0 || dayShifted) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, day); cl.set(Calendar.MONTH, mon - 1); // '- 1' here because we are NOT promoting the month continue; } } else { int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w int dow = daysOfWeek.first(); // desired // d-o-w st = daysOfWeek.tailSet(cDow); if (st != null && st.size() > 0) { dow = st.first(); } int daysToAdd = 0; if (cDow < dow) { daysToAdd = dow - cDow; } if (cDow > dow) { daysToAdd = dow + (7 - cDow); } int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); if (day + daysToAdd > lDay) { // will we pass the end of // the month? cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, 1); cl.set(Calendar.MONTH, mon); // no '- 1' here because we are promoting the month continue; } else if (daysToAdd > 0) { // are we swithing days? cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, day + daysToAdd); cl.set(Calendar.MONTH, mon - 1); // '- 1' because calendar is 0-based for this field, // and we are 1-based continue; } } } else { // dayOfWSpec && !dayOfMSpec throw new UnsupportedOperationException( "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented."); } cl.set(Calendar.DAY_OF_MONTH, day); mon = cl.get(Calendar.MONTH) + 1; // '+ 1' because calendar is 0-based for this field, and we are // 1-based int year = cl.get(Calendar.YEAR); t = -1; // test for expressions that never generate a valid fire date, // but keep looping... if (year > MAX_YEAR) { return null; } // get month................................................... st = months.tailSet(mon); if (st != null && st.size() != 0) { t = mon; mon = st.first(); } else { mon = months.first(); year++; } if (mon != t) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, 1); cl.set(Calendar.MONTH, mon - 1); // '- 1' because calendar is 0-based for this field, and we are // 1-based cl.set(Calendar.YEAR, year); continue; } cl.set(Calendar.MONTH, mon - 1); // '- 1' because calendar is 0-based for this field, and we are // 1-based year = cl.get(Calendar.YEAR); t = -1; // get year................................................... st = years.tailSet(year); if (st != null && st.size() != 0) { t = year; year = st.first(); } else { return null; // ran out of years... } if (year != t) { cl.set(Calendar.SECOND, 0); cl.set(Calendar.MINUTE, 0); cl.set(Calendar.HOUR_OF_DAY, 0); cl.set(Calendar.DAY_OF_MONTH, 1); cl.set(Calendar.MONTH, 0); // '- 1' because calendar is 0-based for this field, and we are // 1-based cl.set(Calendar.YEAR, year); continue; } cl.set(Calendar.YEAR, year); gotOne = true; } // while( !done ) return cl.getTime(); } /** * Advance the calendar to the particular hour paying particular attention * to daylight saving problems. * * @param cal the calendar to operate on * @param hour the hour to set */ protected void setCalendarHour(Calendar cal, int hour) { cal.set(java.util.Calendar.HOUR_OF_DAY, hour); if (cal.get(java.util.Calendar.HOUR_OF_DAY) != hour && hour != 24) { cal.set(java.util.Calendar.HOUR_OF_DAY, hour + 1); } } /** * NOT YET IMPLEMENTED: Returns the time before the given time * that the CronExpression matches. */ public Date getTimeBefore(Date endTime) { // FUTURE_TODO: implement QUARTZ-423 return null; } /** * NOT YET IMPLEMENTED: Returns the final time that the * CronExpression will match. */ public Date getFinalFireTime() { // FUTURE_TODO: implement QUARTZ-423 return null; } protected boolean isLeapYear(int year) { return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)); } protected int getLastDayOfMonth(int monthNum, int year) { switch (monthNum) { case 1: return 31; case 2: return (isLeapYear(year)) ? 29 : 28; case 3: return 31; case 4: return 30; case 5: return 31; case 6: return 30; case 7: return 31; case 8: return 31; case 9: return 30; case 10: return 31; case 11: return 30; case 12: return 31; default: throw new IllegalArgumentException("Illegal month number: " + monthNum); } } private void readObject(java.io.ObjectInputStream stream) throws java.io.IOException, ClassNotFoundException { stream.defaultReadObject(); try { buildExpression(cronExpression); } catch (Exception ignore) { } // never happens } @Override @Deprecated public Object clone() { return new CronExpression(this); } } class ValueSet { public int value; public int pos; }

 

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