Struts2的输入校验实例代码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="/struts-tags" prefix="s" %>

 
 
  
 
 
  
   用户名：


   密  码：


     确认密码：


      
      
  
 

<&＃63;xml version="1.0" encoding="UTF-8" &＃63;>

 
  
    
  
   
   /success.jsp
   
   /register.jsp
   
     

import com.opensymphony.xwork2.ActionSupport;
public class RegisterAction extends ActionSupport{
 private String username;
 private String password;
 private String password2;
 //这里我通过set方法封装数据 
 public void setUsername(String username) {
  this.username = username;
 }
 public void setPassword(String password) {
  this.password = password;
 }
 public void setPassword2(String password2) {
  this.password2 = password2;
 }
 @Override
 public String execute() throws Exception {
  return NONE;
 }
 //在服务器端需要完成对数据的校验
 @Override
 public void validate() {
  //测试是否得到属性值，证实已经得到
 System.out.println(username+"---"+password+"---"+password2);
 if(username==null || username.length()<6 || username.length()>20){
  //把错误信息保存到字段中
  this.addFieldError("username", "有户名输入不合法");
 }
 if(password==null || password.length()<6 || password.length()>20){
  //把错误信息保存到字段中
  this.addFieldError("password", "密码输入不合法");
 }else if( password2==null || password2.length()<6 || password2.length()>20){
  this.addFieldError("password2", "密码输入不合法");
 }else if(!password.equals(password2)){
  this.addFieldError("password2", " 两次密码不一致");
 }
  super.validate();
 }
}

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="/struts-tags" prefix="s" %>


 
 
 
 
 
  
   

    

     
用户名
     

      
     
    
    

     
密码
     

      
     
    
    

     
确认密码
     

      
     
    
    

     
年龄
     

      
     
    
    

     
邮箱
     

      
     
    
    

     
生日
     

      
     
    
    

     
毕业日期
     

      
     
    
    

     

      
     
     

      
     
    
   
  
 

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
public class RegisterAction extends ActionSupport implements ModelDriven{
 //手动创建一个对象
 private User user =new User();
 @Override
 public String execute() throws Exception {
  return NONE;
 }
 public User getModel() {
  return user;
 }  
}

import java.util.Date;
public class User {
 private String username;
 private String password;
 private String password2;
 private Integer age;
 private String email;
 private Date birthday;
 private Date graduation;
 /*
  * 给属性提供get和set方法
  */
}

 
  
  
    
     true
     用户民不能为空
    
    
    6
    15
    有户名长度必须在 ${minLength} 和 ${maxLength}之间 
    
   
  
    
     true
     密码不能为空
    
    
    6
    15
    密码必须在 ${minLength}和${maxLength}之间 
    
   
  
   
    
    两次密码不一致
   
  
  
   
    true
    年龄不能为空
   
   
    1
    150
    年龄必须在 ${min} 和 ${max}之间
   
  
  
   
    不是一个合法的邮箱地址
   
  
  
   
    2001-01-01
    2003-12-31
    生日必须在 ${min} 和${max}之间