Strust2 输入校验

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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>