Validator验证框架 回顾ActionForm的表单验证,掌握Validator验证框架.zip

package app05d.form; import java.text.DateFormat; import java.text.ParseException; import java.util.Date; import javax.servlet.http.HttpServletRequest; import org.apache.struts.action.ActionErrors; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionMessage; import org.apache.struts.validator.DynaValidatorForm; public final class OrderForm extends DynaValidatorForm { public ActionErrors validate(ActionMapping mapping, HttpServletRequest request) { ActionErrors errors = super.validate(mapping, request); if (errors==null) errors = new ActionErrors(); String orderDateString = (String)this.get("orderDate"); if (!orderDateString.equals(null)) { Date today = new Date(); DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.SHORT); try { Date orderDate = dateFormat.parse(orderDateString); if (orderDate.after(today)) { errors.add("order", new ActionMessage("ruleError.orderDate")); } } catch (ParseException ex) { errors.add("order", new ActionMessage("ruleError.orderDate")); } } return errors; } }