struts校验框架

 

 校验框架：双校验
   使用校验框架:
   1.在struts-config.xml中加入validate plug-in(copy)

 

<plug-in className="org.apache.struts.validator.ValidatorPlugIn">         <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,                                                   /WEB-INF/validation.xml"/>       </plug-in>

 2.在WEB-INF跟目录下，建立validation.xml，并描述校验规则

 

 

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN" "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd"> <form-validation>     <formset>         <form name="loginForm">             <field property="userName" depends="required,minlength,maxlength,integer">             <arg0 key="userName"/>             <arg1 key="${var:minlength}" name="minlength" resource="false"/>             <var>                 <var-name>minlength</var-name>                 <var-value>3</var-value>             </var>             <arg1 key="${var:maxlength}" name="maxlength" resource="false"/>             <var>                 <var-name>maxlength</var-name>                 <var-value>8</var-value>             </var>             </field>             <field property="passWord" depends="required,minlength,maxlength">             <arg0 key="passWord"/>             <arg1 key="${var:minlength}" name="minlength" resource="false"/>             <var>                 <var-name>minlength</var-name>                 <var-value>3</var-value>             </var>             <arg1 key="${var:maxlength}" name="maxlength" resource="false"/>             <var>                 <var-name>maxlength</var-name>                 <var-value>8</var-value>             </var>             </field>         </form>     </formset> </form-validation>

 

  3.copy error message to resource

 

userName=userName passWord=passWord errors.footer=</span> errors.header=<span style="color:red;"> errors.required={0} is required. errors.minlength={0} can not be less than {1} characters. errors.maxlength={0} can not be greater than {1} characters. errors.invalid={0} is invalid. errors.byte={0} must be a byte. errors.short={0} must be a short. errors.integer={0} must be an integer. errors.long={0} must be a long. errors.float={0} must be a float. errors.double={0} must be a double. errors.date={0} is not a date. errors.range={0} is not in the range {1} through {2}. errors.creditcard={0} is an invalid credit card number. errors.email={0} is an invalid e-mail address.

4.form类必须继承ValidatorForm 并且要干掉其中的validate方法！