userpkform.java

对入学者很实用用JAVA的基本语言写的

package com.yourcompany.struts.form;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.validator.ValidatorForm;

@SuppressWarnings("serial")
public class UserPkForm extends ValidatorForm {

	/** usid property */
	private String[] usid;

	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
	   ActionErrors errors = super.validate(mapping, request);
	   if (errors.size()==0){
		   if ("edit".equalsIgnoreCase(mapping.getParameter())){
			   if (usid.length>1){
				   errors.add("usid", 
						new ActionMessage("只能选择一条记录",false));
			   }
		   }
	   }
	   return errors;
	}

	/**
	 * Returns the usid.
	 * 
	 * @return String[]
	 */
	public String[] getUsid() {
		return usid;
	}

	/**
	 * Set the usid.
	 * 
	 * @param usid
	 *            The usid to set
	 */
	public void setUsid(String[] usid) {
		this.usid = usid;
	}
}