posts - 40, comments - 187, trackbacks - 0

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;
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）

/**
3

* 页面设置转为UNIX cron expressions 转换类
4

* CronExpConversion
5

*/
6

public class CronExpConversion {
7

/**
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...

posted on 2007-01-10 16:15 小立飞刀阅读(5063) 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

新用户注册刷新评论列表


只有注册用户登录后才能发表评论。




网站导航: 博客园 IT新闻 Chat2DB C++博客博问管理
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

2007年1月

日

一

二

三

四

五

六

生存或毁灭，这是个必答之问题：是否应默默的忍受坎苛命运之无情打击，还是应与深如大海之无涯苦难奋然为敌，并将其克服。此二抉择，究竟是哪个较崇高？

常用链接

留言簿(12)

随笔分类(43)

相册

收藏夹(7)

朋友的博客

电子资料

搜索

积分与排名

最新评论

阅读排行榜

评论排行榜