一個簡單的strutseb2服務器端驗證,竟然花了一個多小時才完成。。。。找了半天原來是一個方法名寫錯了。。筆誤。。
把getUsername().寫成了getUserame(),然后一直取不出username的值。。。。
    1.注冊頁面（register.jsp）
   
<%@ page language="java" contentType="text/html; charset=GBK"%>
<%@taglib prefix="s" uri="/struts-tags"%>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"/>

<title>請輸入您的注冊信息</title>

</head>


<body>
<H1>請輸入您的注冊信息</H1>
<s:fielderror/>
<FORM METHOD="POST" ACTION="regist.action">
    用戶名：<INPUT TYPE="text" NAME="username"><br>
    密&nbsp;&nbsp;碼：<INPUT TYPE="text" NAME="pass"><br>
    年&nbsp;&nbsp;齡：<INPUT TYPE="text" NAME="age"><br>
    生&nbsp;&nbsp;日：<INPUT TYPE="text" NAME="birthday"><p>
    <INPUT TYPE="submit" value="注冊">
</FORM>


</body>

</html>
(2)Action類(RegisterAction.java)
package my;
import com.opensymphony.xwork2.ActionSupport;
import java.util.Date;
public class RegisterAction extends ActionSupport
{
    private String username;
    private String pass;
    private int age;
    private Date birthday;
    public void setUsername(String username)
    {
        this.username = username;
    }
    public String getUsername()
    {
        return this.username;
    }

    public void setPass(String pass)
    {
        this.pass = pass;
    }
    public String getPass()
    {
        return this.pass;
    }
    public void setAge(int age)
    {
        this.age = age;
    }
    public int getAge()
    {
        return this.age;
    }
    public void setBirthday(Date birthday)
    {
        this.birthday = birthday;
    }
    public Date getBirthday()
    {
        return this.birthday;
    }
    public String execute()throws Exception 
    {
        return SUCCESS;
    }
}
(3)驗證文件.RegisterAction-validator.xml
<?xml version="1.0" encoding="GBK"?>
<!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">
                <param name="trim">true</param>
                <message>please input your username</message>
            </field-validator>
        </field>

        <field name="pass">
            <field-validator type="requiredstring">
                <param name="trim">true</param>
                <message>please input your password</message>
            </field-validator>
        </field>
        <field name="age">
            <field-validator type="int">
                <param name="min">1</param>
                <param name="max">100</param>
                <message>age must between 1 and 100</message>
            </field-validator>
        </field>
        <field name="birthday">
            <field-validator type="date">
                <param name="min">1900-01-01</param>
                <param name="max">2050-01-01</param>
            <message>birtday is error</message>
            </field-validator>
        </field>
    </validators>

(4)struts2配置文件(struts.xml)
<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">
        <struts>
            <package name="my" extends="struts-default">
            <action name="regist" class="my.RegisterAction">
                <result name="success">/show.jsp</result>
                <result name="input">/register.jsp</result>
            </action>
            </package>
        </struts>
success頁面(show.jsp)
<%@ page language="java" contentType="text/html; charset=GBK"%>
<%@taglib prefix="s" uri="/struts-tags"%>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=GBK"/>

<title>校驗成功</title>

</head>


<body>
<H3>校驗成功</H3>
用戶名：<s:property value="username"/><br>
密碼：<s:property value="pass"/><br>
年齡：<s:property value="age"/><br>
生日：<s:property value="birthday"/><br>

</body>

</html>

     OK...