1.找到工程下struts2-dojo-plugin-2.1.6.jar这个包。
2.用winrar或者7zip打开。进入：struts2-dojo-plugin-2.1.6.jar\org\apache\struts2\static\dojo\nls\找个路径下，看到dojo_zh.js和dojo_zh-cn.js这两个文件。
3.拖出来，用utf-8的格式打开。怎么改大家一看就知道了。
4.把修改后的文件替换回去。就可以了。

ii.dojo_zh.js的正确内容如下：
dojo.provide("nls.dojo_zh");dojo.provide("dojo.i18n.calendar.nls.gregorian");dojo.i18n.calendar.nls.gregorian._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorian.zh");dojo.i18n.calendar.nls.gregorian.zh={"days-standAlone-narrow":["日","一","二","三","四","五","六"],"eras":["公元前","公元"],"am":"上午","months-format-abbr":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"days-format-abbr":["周日","周一","周二","周三","周四","周五","周六"],"pm":"下午","months-format-wide":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"months-standAlone-narrow":["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"days-format-wide":["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],"field-weekday":"Day of the Week","dateFormat-medium":"yyyy MMM d","field-second":"Second","field-week":"Week","timeFormat-full":"HH:mm:ss z","field-year":"Year","field-minute":"Minute","timeFormat-medium":"HH:mm:ss","field-hour":"Hour","dateFormat-long":"yyyy MMMM d","field-day":"Day","field-dayperiod":"Dayperiod","field-month":"Month","dateFormat-short":"yy/MM/dd","field-era":"Era","timeFormat-short":"HH:mm","timeFormat-long":"HH:mm:ss z","dateFormat-full":"EEEE, yyyy MMMM dd","field-zone":"Zone"};dojo.provide("dojo.i18n.calendar.nls.gregorianExtras");dojo.i18n.calendar.nls.gregorianExtras._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorianExtras.zh");dojo.i18n.calendar.nls.gregorianExtras.zh={"dateFormat-yearOnly":"yyyy'年'"};dojo.provide("dojo.i18n.calendar.nls.gregorian");dojo.i18n.calendar.nls.gregorian._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorian.zh");dojo.i18n.calendar.nls.gregorian.zh={"days-standAlone-narrow":["日","一","二","三","四","五","六"],"eras":["公元前","公元"],"am":"上午","months-format-abbr":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"days-format-abbr":["周日","周一","周二","周三","周四","周五","周六"],"pm":"下午","months-format-wide":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"months-standAlone-narrow":["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"days-format-wide":["星期日","星期一","星期二","星期三","星期四","星期五","星期六"],"field-weekday":"Day of the Week","dateFormat-medium":"yyyy MMM d","field-second":"Second","field-week":"Week","timeFormat-full":"HH:mm:ss z","field-year":"Year","field-minute":"Minute","timeFormat-medium":"HH:mm:ss","field-hour":"Hour","dateFormat-long":"yyyy MMMM d","field-day":"Day","field-dayperiod":"Dayperiod","field-month":"Month","dateFormat-short":"yy/MM/dd","field-era":"Era","timeFormat-short":"HH:mm","timeFormat-long":"HH:mm:ss z","dateFormat-full":"EEEE, yyyy MMMM dd","field-zone":"Zone"};dojo.provide("dojo.widget.nls.TimePicker");dojo.widget.nls.TimePicker._built=true;dojo.provide("dojo.widget.nls.TimePicker.zh");dojo.widget.nls.TimePicker.zh={"any":"any"};dojo.provide("dojo.widget.nls.DropdownTimePicker");dojo.widget.nls.DropdownTimePicker._built=true;dojo.provide("dojo.widget.nls.DropdownTimePicker.zh");dojo.widget.nls.DropdownTimePicker.zh={"selectTime":"Select time"};dojo.provide("dojo.widget.nls.DropdownDatePicker");dojo.widget.nls.DropdownDatePicker._built=true;dojo.provide("dojo.widget.nls.DropdownDatePicker.zh");dojo.widget.nls.DropdownDatePicker.zh={"selectDate":"Select a date"};
iii.dojo_zh-cn.js的内容如下：

dojo.provide("nls.dojo_zh-cn");dojo.provide("dojo.i18n.calendar.nls.gregorian");dojo.i18n.calendar.nls.gregorian._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorian.zh_cn");dojo.i18n.calendar.nls.gregorian.zh_cn={"dateFormat-medium":"yyyy-M-d","field-second":"秒钟","field-week":"周","timeFormat-full":"ahh'时'mm'分'ss'秒' z","field-year":"年","field-minute":"分钟","timeFormat-medium":"ahh:mm:ss","field-hour":"小时","dateFormat-long":"yyyy'年'M'月'd'日'","field-day":"日","field-dayperiod":"上午/下午","field-month":"月","dateFormat-short":"yy-M-d","field-era":"时期","timeFormat-short":"ah:mm","timeFormat-long":"ahh'时'mm'分'ss'秒'","dateFormat-full":"yyyy'年'M'月'd'日'EEEE","field-weekday":"周天","field-zone":"区域","days-standAlone-narrow":["日","一","二","三","四","五","六"],"eras":["公元前","公元"],"am":"上午","months-format-abbr":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"days-format-abbr":["周日","周一","周二","周三","周四","周五","周六"],"pm":"下午","months-format-wide":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"months-standAlone-narrow":["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"days-format-wide":["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]};dojo.provide("dojo.i18n.calendar.nls.gregorianExtras");dojo.i18n.calendar.nls.gregorianExtras._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorianExtras.zh_cn");dojo.i18n.calendar.nls.gregorianExtras.zh_cn={"dateFormat-yearOnly":"yyyy'年'"};dojo.provide("dojo.i18n.calendar.nls.gregorian");dojo.i18n.calendar.nls.gregorian._built=true;dojo.provide("dojo.i18n.calendar.nls.gregorian.zh_cn");dojo.i18n.calendar.nls.gregorian.zh_cn={"dateFormat-medium":"yyyy-M-d","field-second":"秒钟","field-week":"周","timeFormat-full":"ahh'时'mm'分'ss'秒' z","field-year":"年","field-minute":"分钟","timeFormat-medium":"ahh:mm:ss","field-hour":"小时","dateFormat-long":"yyyy'年'M'月'd'日'","field-day":"日","field-dayperiod":"上午/下午","field-month":"月","dateFormat-short":"yy-M-d","field-era":"时期","timeFormat-short":"ah:mm","timeFormat-long":"ahh'时'mm'分'ss'秒'","dateFormat-full":"yyyy'年'M'月'd'日'EEEE","field-weekday":"周天","field-zone":"区域","days-standAlone-narrow":["日","一","二","三","四","五","六"],"eras":["公元前","公元"],"am":"上午","months-format-abbr":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"days-format-abbr":["周日","周一","周二","周三","周四","周五","周六"],"pm":"下午","months-format-wide":["一月","二月","三月","四月","五月","六月","七月","八月","九月","十月","十一月","十二月"],"months-standAlone-narrow":["1月","2月","3月","4月","5月","6月","7月","8月","9月","10月","11月","12月"],"days-format-wide":["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]};dojo.provide("dojo.widget.nls.TimePicker");dojo.widget.nls.TimePicker._built=true;dojo.provide("dojo.widget.nls.TimePicker.zh_cn");dojo.widget.nls.TimePicker.zh_cn={"any":"any"};dojo.provide("dojo.widget.nls.DropdownTimePicker");dojo.widget.nls.DropdownTimePicker._built=true;dojo.provide("dojo.widget.nls.DropdownTimePicker.zh_cn");dojo.widget.nls.DropdownTimePicker.zh_cn={"selectTime":"Select time"};dojo.provide("dojo.widget.nls.DropdownDatePicker");dojo.widget.nls.DropdownDatePicker._built=true;dojo.provide("dojo.widget.nls.DropdownDatePicker.zh_cn");dojo.widget.nls.DropdownDatePicker.zh_cn={"selectDate":"Select a date"};