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。