userform.java

一个简单的用户登陆注册系统

package com.login.actionForm;

import java.util.ArrayList;
import java.util.List;

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.action.ActionMessages;



public class UserForm extends ActionForm {
	@Override
	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
		
	    ActionErrors actionErrors = null;
	      ArrayList errorList = new ArrayList();
	      doValidate(mapping, request, errorList);
	      request.setAttribute("errors", errorList);
	      if (!errorList.isEmpty()) {
	        actionErrors = new ActionErrors();
	        actionErrors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("global.error"));
	      }
	      return actionErrors;
	    }

	    public void doValidate(ActionMapping mapping, HttpServletRequest request, List errors) {
	        addErrorIfStringEmpty(errors, "UserId  And password is required", getName().toString() ,getPassword().toString());
	       
	    }

	 
	    public void addErrorIfStringEmpty(List errors, String message, String name ,String password) {
	      if ((name == null || name.trim().length() < 1) && (password == null ||password.trim().length()<1)) {
	        errors.add(message);
	      }
		
	}

	private String name;
	private String password;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}
	
	
	

}