package com.great.util; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Map; import com.opensymphony.xwork2.conversion.impl.DefaultTypeConverter; public class DateConverter extends DefaultTypeConverter {     private static final DateFormat[] ACCEPT_DATE_FORMATS = {             new SimpleDateFormat("dd/MM/yyyy"),             new SimpleDateFormat("yyyy-MM-dd"),             new SimpleDateFormat("yyyy/MM/dd") }; //支持转换的日期格式     @Override     public Object convertValue(Map context, Object value, Class toType) {         if (toType == Date.class) {  //浏览器向服务器提交时，进行String to Date的转换             Date date = null;             String dateString = null;             String[] params = (String[])value;             dateString = params[0];//获取日期的字符串             for (DateFormat format : ACCEPT_DATE_FORMATS) {                 try {                     return format.parse(dateString);//遍历日期支持格式，进行转换                 } catch(Exception e) {                     continue;                 }             }             return null;         }         else if (toType == String.class) {   //服务器向浏览器输出时，进行Date to String的类型转换             Date date = (Date)value;             return new SimpleDateFormat("yyyy-MM-dd").format(date);//输出的格式是yyyy-MM-dd         }         return null;     } }