struts2+AJAX（DWR）的输入校验问题

mathematical 2011-05-04 10:29:19

当一个文本框失去焦点时，没有按照程序要求（通过struts2的Validation框架）提示相应的错误信息，而是弹出对话框“来自网页的消息 Error”(无数次)，请问为何出现这种情况？如何解决？

1.页面文件：register.jsp



<%@ page language="java" pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags"%>

<html>

	<head>

		<title>带有AJAX校验功能的用户注册页面</title>

		<style type="text/css">

input {

	width: 200px

}

</style>

<s:head theme="ajax"/>

	</head>

	<body>

		<!--  action = "register" -->

		<s:form action="register" namespace="/chapter15" theme="ajax"

			validate="true">

			<s:textfield label="用户名" name="username" />

			<s:password label="密码" name="password" />

			<s:password label="重新输入密码" name="repassword" />

			<s:textfield label="年龄" name="age" />

			<s:textfield label="生日" name="birthday" />

			<s:submit value="注册" cssStyle="width:50px" />

		</s:form>

	</body>

</html>

2.struts2的Action：RegisterAction.java



package chapter15.action;



import com.opensymphony.xwork2.*;

import java.util.*;



public class RegisterAction extends ActionSupport

{

	private String username;

	private String password;

	private int age;

	private Date birthday;

	private String result;



	// result属性的getter方法

	public String getResult()

	{

		return result;

	}



	// result属性的setter方法

	public void setResult(String result)

	{

		this.result = result;

	}



	// username属性的getter方法

	public String getUsername()

	{

		return username;

	}



	// username属性的setter方法

	public void setUsername(String username)

	{

		this.username = username;

	}



	// password属性的getter方法

	public String getPassword()

	{

		return password;

	}



	// password属性的setter方法

	public void setPassword(String password)

	{

		this.password = password;

	}



	// age属性的getter方法

	public int getAge()

	{

		return age;

	}



	// age属性的setter方法

	public void setAge(int age)

	{

		this.age = age;

	}



	// birthday属性的getter方法

	public Date getBirthday()

	{

		return birthday;

	}



	// birthday属性的setter方法

	public void setBirthday(Date birthday)

	{

		this.birthday = birthday;

	}



	public String execute() throws Exception

	{

		setResult("注册成功!");

		return SUCCESS;

	}

...全文

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mathematical 2011-05-04

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3.validation输入校验：RegisterAction-validation.xml



<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN"

"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">

<validators>

	<field name="username">

		<field-validator type="requiredstring">

			<message>用户名必须输入</message>

		</field-validator>

		<field-validator type="stringlength" short-circuit="true"> 

			<param name="minLength">4</param>

			<param name="maxLength">20</param>

			<param name="trim">true</param>

			<message>abcdefg</message>

		</field-validator>

		<field-validator type="regex">

			<param name="expression"><![CDATA[(^\w*$)]]></param>

			<param name="trim">true</param>

			<message>用户名必须是字母和数字!</message>

		</field-validator>

	</field>

	<field name="password">

		<field-validator type="requiredstring">

			<message>密码必须输入</message>

		</field-validator>

		<field-validator type="stringlength">

			<param name="minLength">8</param>

			<param name="maxLength">30</param>



			<param name="trim">true</param>

			<message>密码的长度必须介于8和30之间!</message>

		</field-validator>

	</field>

	<field name="age">

		<field-validator type="int">

			<param name="min">1</param>

			<param name="max">200</param>

			<message>您必须输入一个有效的年龄!</message>

		</field-validator>

	</field>

	<field name="birthday">

		<field-validator type="requiredstring" >

			<message>出生日期必须输入</message>

		</field-validator>

		<field-validator type="date">

			<param name="min">1900-1-1</param>

			<param name="max">2020-1-1</param>

			<message>出生日期必须在 ${min}和${max}之间!</message>

		</field-validator>

	</field>



</validators>

mathematical 2011-05-04

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4. struts.xml



<?xml version="1.0" encoding="UTF-8" ?>

<!--  指定Struts 2配置文件的DTD信息  -->

<!DOCTYPE struts PUBLIC

      "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

      "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

<package name="chapter15" namespace="/chapter15"

		extends="json-default">

		<action name="register"

			class="chapter15.action.RegisterAction">

			<result name="success">/chapter15/success.jsp</result>

			<result name="input">/chapter15/input.jsp</result>

		</action>

</package>

</struts>