struts2 验证

Struts2输入校验(二)----验证框架。
　　一 文件名约定:

　　1) 验证XML的文件名: Action类名-validation.xml , 并与相关的Action类放在一起.

　　2) 当一个Action中有多个业务方法时 : Action 类 名-映射名-validation.xml

　　什么是映射名:<action name="login".../> ,name属性的值:login就是映射名, 千万注意,很多人写错

　　例子:

　　URL是:http://localhost/struts/user_addUser. action

　　struts.xml是:

　　Xml代码　　


<action name="user_*" class="ssh.org.web.UserAction" method="{1}">
<result name="success">/user/success.jsp</result>
<result name="input">/user/user.jsp</result>
</action>
　　匹配后<action name="user_*".../>　 实为<action name="user_addUser" .../>

　　所以验证框架XML文件名是: UserAction-user_addUser -validation.xml

　　二 验证不通过时, 　 会执行addFieldError ()方法,　 在JSP页面, 要用 <s:fielderror />显示信息.

　　关于addFieldError,请看第6讲:6 addActionError与addFieldError

　　三 例子

　　Registration-validation.xml　 : 用于校验Registration.java类

　　Xml代码　　　


<?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>

<!--
      非字段校验器
　     <validator type="requiredstring">
<param name="fieldName">username</param>
<message>username should not be blank!</message>
</validator>

<validator type="stringlength">
<param name="fieldName">username</param>
<param name="minLength">6</param>
<param name="maxLength">10</param>
<message>username should be between ${minLength} and ${maxLength}</message>
</validator>
-->

字段校验器-->
　     <field name="username">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>username should not be blank!</message>
</field-validator>

<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="maxLength">10</param>
<message>username should be between ${minLength} and ${maxLength}</message>
</field-validator>
</field>

<field name="password">
<field-validator type="requiredstring">
<message>password should not be blank!</message>
</field-validator>

<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="maxLength">10</param>
<message>password should be between ${minLength} and ${maxLength}</message>
</field-validator>
</field>

<field name="repassword">
<field-validator type="requiredstring">
<message>repassword should not be blank!</message>
</field-validator>

<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="maxLength">10</param>
<message>repassword should be between ${minLength} and ${maxLength}</message>
</field-validator>
</field>

<field name="age">
<field-validator type="required">
<message>age should not be blank!</message>
</field-validator>

<field-validator type="int">
<param name="min">1</param>
<param name="max">150</param>
<message>age should be between ${min} and ${max}</message>
</field-validator>
</field>

<field name="birthday">
<field-validator type="required">
<message>birthday should not be blank!</message>
</field-validator>

<field-validator type="date">
<param name="min">2001-01-01</param>
<param name="max">2003-12-31</param>
<message>birthday should be between ${min} and ${max}</message>
</field-validator>
</field>

<field name="graduation">
<field-validator type="required">
<message>graduation should not be blank!</message>
</field-validator>

<field-validator type="date">
<param name="min">2005-01-01</param>
<param name="max">2007-12-31</param>
<message>graduation should be between ${min} and ${max}</message>
</field-validator>
</field>



</validators>


　　四　 Struts2内建的 校验器有:

　　Xml代码

<validators>　　

　　　　<validator　name="required"　class="com.opensymphony.xwork2.validator.validators.RequiredFieldValidator"/>　　

　　　　<validator　name="requiredstring"　class="com.opensymphony.xwork2.validator.validators.RequiredStringValidator"/>　　

　　　　<validator　name="int"　class="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator"/>　　

　　　　<validator　name="long"　class="com.opensymphony.xwork2.validator.validators.LongRangeFieldValidator"/>　　

　　　　<validator　name="short"　class="com.opensymphony.xwork2.validator.validators.ShortRangeFieldValidator"/>　　

　　　　<validator　name="double"　class="com.opensymphony.xwork2.validator.validators.DoubleRangeFieldValidator"/>　　

　　　　<validator　name="date"　class="com.opensymphony.xwork2.validator.validators.DateRangeFieldValidator"/>　　

　　　　<validator　name="expression"　class="com.opensymphony.xwork2.validator.validators.ExpressionValidator"/>　　

　　　　<validator　name="fieldexpression"　class="com.opensymphony.xwork2.validator.validators.FieldExpressionValidator"/>　　

　　　　<validator　name="email"　class="com.opensymphony.xwork2.validator.validators.EmailValidator"/>　　

　　　　<validator　name="url"　class="com.opensymphony.xwork2.validator.validators.URLValidator"/>　　

　　　　<validator　name="visitor"　class="com.opensymphony.xwork2.validator.validators.VisitorFieldValidator"/>　　

　　　　<validator　name="conversion"　class="com.opensymphony.xwork2.validator.validators.ConversionErrorFieldValidator"/>　　

　　　　<validator　name="stringlength"　class="com.opensymphony.xwork2.validator.validators.StringLengthFieldValidator"/>　　

　　　　<validator　name="regex"　class="com.opensymphony.xwork2.validator.validators.RegexFieldValidator"/>　　

　　　　<validator　name="conditionalvisitor"　class="com.opensymphony.xwork2.validator.validators.ConditionalVisitorFieldValidator"/>　　

</validators>