Struts2输入校验(二) 验证框架

副标题#e#

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中有多个业务要领时 : 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,千万留意,许多人写错

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 证不通过期,会执行addFieldError ()要领,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>

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<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>

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四 Struts2内建的校验器有:

Xml代码

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<validators>

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

<validator　name="int"　 class="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator"/>< br />
<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"/&g t;

<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"/& gt;

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

<validator　name="conditionalvisitor"　 class="com.opensymphony.xwork2.validator.validators.ConditionalVisitorFieldValidator&q uot;/>

</validators>