Spring Quartz如何动态配置时间（2）

Spring Quartz如何动态配置时间（2）

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：

 1 SchedulerForm schedulerForm  =  (SchedulerForm) form;
 2         String jobName  =  schedulerForm.getJobName();
 3         String cronExpression  =   "" ;
 4         String[] commonNeeds  =   {schedulerForm.getSecond(), schedulerForm.getMinute(), schedulerForm.getHour()} ;
 5         String[] monthlyNeeds  =   {schedulerForm.getWeek(), schedulerForm.getDayOfMonth()} ;
 6         String weeklyNeeds  =  schedulerForm.getDayOfWeek();
 7         String userDefinedNeeds  =  schedulerForm.getDate();
 8         String everyWhat  =  schedulerForm.getEveryWhat();
 9          // 得到时间规则
10         cronExpression  =  CronExpConversion.getCronExpression(everyWhat, commonNeeds,
11                 monthlyNeeds, weeklyNeeds, userDefinedNeeds);
12

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）

 1
 2 /** */ /**
 3  * 页面设置转为UNIX cron expressions 转换类
 4  * CronExpConversion
 5   */
 6 public   class  CronExpConversion  {
 7     
 8      /** */ /**
 9      * 页面设置转为UNIX cron expressions 转换算法
10      *  @param  everyWhat
11      *  @param  commonNeeds 包括 second minute hour
12      *  @param  monthlyNeeds 包括 第几个星期 星期几
13      *  @param  weeklyNeeds  包括 星期几
14      *  @param  userDefinedNeeds  包括具体时间点
15      *  @return  cron expression
16       */
17      public   static  String convertDateToCronExp(String everyWhat,
18             String[] commonNeeds, String[] monthlyNeeds, String weeklyNeeds,
19             String userDefinedNeeds)  {
20         String cronEx  =   "" ;
21         String commons  =  commonNeeds[ 0 ]  +   "   "   +  commonNeeds[ 1 ]  +   "   "
22                  +  commonNeeds[ 2 ]  +   "   " ;
23         String dayOfWeek  =   "" ;
24          if  ( " monthly " .equals(everyWhat))  {
25              //  eg.: 6#3 (day 6 = Friday and "#3" = the 3rd one in the
26              //  month)
27             dayOfWeek  =  monthlyNeeds[ 1 ]
28                      +  CronExRelated.specialCharacters
29                             .get(CronExRelated._THENTH)  +  monthlyNeeds[ 0 ];
30             cronEx  =  (commons
31                      +  CronExRelated.specialCharacters.get(CronExRelated._ANY)
32                      +   "   "
33                      +  CronExRelated.specialCharacters.get(CronExRelated._EVERY)
34                      +   "   "   +  dayOfWeek  +   "   " ).trim();
35         }   else   if  ( " weekly " .equals(everyWhat))  {
36             dayOfWeek  =  weeklyNeeds;  //  1
37             cronEx  =  (commons
38                      +  CronExRelated.specialCharacters.get(CronExRelated._ANY)
39                      +   "   "
40                      +  CronExRelated.specialCharacters.get(CronExRelated._EVERY)
41                      +   "   "   +  dayOfWeek  +   "   " ).trim();
42         }   else   if  ( " userDefined " .equals(everyWhat))  {
43             String dayOfMonth  =  userDefinedNeeds.split( " - " )[ 2 ];
44              if  (dayOfMonth.startsWith( " 0 " ))  {
45                 dayOfMonth  =  dayOfMonth.replaceFirst( " 0 " ,  "" );
46             }
47             String month  =  userDefinedNeeds.split( " - " )[ 1 ];
48              if  (month.startsWith( " 0 " ))  {
49                 month  =  month.replaceFirst( " 0 " ,  "" );
50             }
51             String year  =  userDefinedNeeds.split( " - " )[ 0 ];
52              // FIXME 暂时不加年份 Quartz报错
53              /**/ /* cronEx = (commons + dayOfMonth + " " + month + " "
54                     + CronExRelated.specialCharacters.get(CronExRelated._ANY)
55                     + " " + year).trim(); */
56             cronEx  =  (commons  +  dayOfMonth  +   "   "   +  month  +   "   "
57                      +  CronExRelated.specialCharacters.get(CronExRelated._ANY)
58                      +   "   " ).trim();
59         }
60          return  cronEx;
61     }     
62 }
63

这样就将页面的时间设置转为了Cron Expression。

                                                   To Be Continued...