Struts2学习2--窗口验证---Struts2框架验证

1)struts.xml

        <action name="Logon" class="com.meetcomet.action.logon">
            <result name="input">/login.jsp</result>
            <result name="success">/welcome.jsp</result>
            <result name="error">/error.jsp</result>
        </action>

2)login.jsp

<%@page language="java"import="java.util.*"pageEncoding="GBK"%>
<%@taglib prefix="s"uri="/struts-tags"%>
<html>
<body>

<s:text name="greetings"></s:text><br>
<s:form action="Logon"  method="post" >
<s:textfield key="username"/>
<s:textfield key="password"/>
<s:textfield key="email"/>
<s:submit value="确定"/>
</s:form><s:text name="contact"></s:text>
</body>
</html>

4)Logon中没有验证代码

5）在和Logon同一位置文件名为logon.java，建立的验证文件logon-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>账号不能为空</message>  
        </field-validator>  
    </field>  
      
    <field name="password">
        <field-validator type="requiredstring">
            <message>密码不能为空</message>
        </field-validator>
        <field-validator type="stringlength">
            <param name="minLength">6</param>
            <param name="maxLength">10</param>
            <message>密码在 ${minLength} -${maxLength}位之间</message>
        </field-validator>
     </field>
     
     <field    name="email">
         <field-validator type="requiredstring">
            <message>email不能为空</message>
        </field-validator>   
         <field-validator type="email">
             <message>非email格式</message>
         </field-validator>
     </field>
        
</validators>

6)国际化可为

  <field name="email">
         <field-validator type="requiredstring">
            <message>${getText("login.email.isnull")</message>
        </field-validator>   
      <field-validator type="email">
       <message>${getText("login.email.noEmail")</message>
      </field-validator>
     </field>

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后来发现，login的action名字还是用login比较好，而不要用自己编的logon，因为Action.LOGIN这个值为"login".