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书接上回，
上回说到，武松武二郎斗杀西门庆，为大哥报了仇…… !!!-_- 啊，说串了，嘿嘿不好意思
（删掉上面一行）
上回说到，我们的设置页面已经做好了，接下来就是将时间转换为Unix Cron Expression。

2) 将时间转换为Unix Cron Expression

需要ActionForm将页面表单数据映射到Action中，然后在Action中转换为cron expression：

SchedulerForm schedulerForm = (SchedulerForm) form;
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String jobName = schedulerForm.getJobName();
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String cronExpression = "" ;
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String[] commonNeeds = {schedulerForm.getSecond(), schedulerForm.getMinute(), schedulerForm.getHour()} ;
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String[] monthlyNeeds = {schedulerForm.getWeek(), schedulerForm.getDayOfMonth()} ;
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String weeklyNeeds = schedulerForm.getDayOfWeek();
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String userDefinedNeeds = schedulerForm.getDate();
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String everyWhat = schedulerForm.getEveryWhat();
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// 得到时间规则
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cronExpression = CronExpConversion.getCronExpression(everyWhat, commonNeeds,
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monthlyNeeds, weeklyNeeds, userDefinedNeeds);
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我定义了一个规则类来处理转换规则（写得不是很好能用就行嘿嘿）

/**
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* 页面设置转为UNIX cron expressions 转换类
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* CronExpConversion
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*/
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public class CronExpConversion {
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/**
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* 页面设置转为UNIX cron expressions 转换算法
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* @param everyWhat
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* @param commonNeeds 包括 second minute hour
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* @param monthlyNeeds 包括第几个星期星期几
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* @param weeklyNeeds 包括星期几
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* @param userDefinedNeeds 包括具体时间点
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* @return cron expression
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*/
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public static String convertDateToCronExp(String everyWhat,
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String[] commonNeeds, String[] monthlyNeeds, String weeklyNeeds,
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String userDefinedNeeds) {
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String cronEx = "" ;
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String commons = commonNeeds[ 0 ] + " " + commonNeeds[ 1 ] + " "
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+ commonNeeds[ 2 ] + " " ;
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String dayOfWeek = "" ;
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if ( " monthly " .equals(everyWhat)) {
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// eg.: 6#3 (day 6 = Friday and "#3" = the 3rd one in the
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// month)
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dayOfWeek = monthlyNeeds[ 1 ]
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+ CronExRelated.specialCharacters
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.get(CronExRelated._THENTH) + monthlyNeeds[ 0 ];
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cronEx = (commons
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+ CronExRelated.specialCharacters.get(CronExRelated._ANY)
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+ " "
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+ CronExRelated.specialCharacters.get(CronExRelated._EVERY)
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+ " " + dayOfWeek + " " ).trim();
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} else if ( " weekly " .equals(everyWhat)) {
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dayOfWeek = weeklyNeeds; // 1
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cronEx = (commons
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+ CronExRelated.specialCharacters.get(CronExRelated._ANY)
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+ " "
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+ CronExRelated.specialCharacters.get(CronExRelated._EVERY)
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+ " " + dayOfWeek + " " ).trim();
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} else if ( " userDefined " .equals(everyWhat)) {
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String dayOfMonth = userDefinedNeeds.split( " - " )[ 2 ];
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if (dayOfMonth.startsWith( " 0 " )) {
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dayOfMonth = dayOfMonth.replaceFirst( " 0 " , "" );
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}
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String month = userDefinedNeeds.split( " - " )[ 1 ];
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if (month.startsWith( " 0 " )) {
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month = month.replaceFirst( " 0 " , "" );
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}
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String year = userDefinedNeeds.split( " - " )[ 0 ];
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// FIXME 暂时不加年份 Quartz报错
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/* cronEx = (commons + dayOfMonth + " " + month + " "
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+ CronExRelated.specialCharacters.get(CronExRelated._ANY)
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+ " " + year).trim(); */
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cronEx = (commons + dayOfMonth + " " + month + " "
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+ CronExRelated.specialCharacters.get(CronExRelated._ANY)
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+ " " ).trim();
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}
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return cronEx;
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}
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}
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这样就将页面的时间设置转为了Cron Expression。

To Be Continued...

posted on 2007-01-10 16:15 小立飞刀阅读(5062) 评论(3) 编辑收藏所属分类: Spring

FeedBack:

# re: Spring Quartz如何动态配置时间（2）

2007-01-10 18:34 | zxy

好好好不错不错回复更多评论

# re: Spring Quartz如何动态配置时间（2）[未登录]

2007-10-15 09:09 | CC

能否提供下CronExRelated类的代码？

貌似不是spring或者quartz包里的回复更多评论

# re: Spring Quartz如何动态配置时间（2）

2007-10-15 09:40 | 小立飞刀

@CC
这个类封装了一些Quartz时间规则的常量，便于自己使用，定义比较灵活，可以根据您的具体情况扩展。

/**
* Quartz时间规则常量类
* CronExRelated
* @author allen
*/
public class CronExRelated {

public static final String _EVERY = "every";
public static final String _ANY = "any";
public static final String _RANGES = "ranges";
public static final String _INCREMENTS = "increments";
public static final String _ADDITIONAL = "additional";
public static final String _LAST = "last";
public static final String _WEEKDAY = "weekday";
public static final String _THENTH = "theNth";
public static final String _CALENDAR = "calendar";

public static final String _TYPE = "type";

/**
* 0 0 6 ? * 1#1 ? monthly
* 0 0 6 ? * 1 ? weekly
* 0 0 6 30 7 ? 2006 useDefined
*/
static String[] headTitle = {"TYPE","SECONDS","MINUTES","HOURS","DAYOFMONTH","MONTH","DAYOFWEEK","YEAR"};

/**
* cron expression special characters
* Map
* specialCharacters
*/
public static Map specialCharacters;

static {
specialCharacters = new HashMap(10);
specialCharacters.put(_EVERY, "*");
specialCharacters.put(_ANY, "?");
specialCharacters.put(_RANGES, "-");
specialCharacters.put(_INCREMENTS, "/");
specialCharacters.put(_ADDITIONAL, ",");
specialCharacters.put(_LAST, "L");
specialCharacters.put(_WEEKDAY, "W");
specialCharacters.put(_THENTH, "#");
specialCharacters.put(_CALENDAR, "C");

specialCharacters.put(_TYPE, headTitle);
}

public static void set(String ex, int index) {
((String[])specialCharacters.get(_TYPE))[index] = ex;
}

} 回复更多评论

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相关文章: 又見“ORA-01461: 仅可以为插入 LONG 列的 LONG 值赋值”！ Spring的依赖关系（JAR） Spring Quartz如何动态配置时间（3） Spring Quartz如何动态配置时间（2） Spring Quartz如何动态配置时间（1） Quartz Cron Expression

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