Validator 的使用一般需要两个配置文件,validator-rules.xml,validation.xml
第一个validator-rules.xml定义了验证的规则(通常使用struts发行包中提供的),正因如此因此也就必须有相应的资源文件包括:
# -- validator --
errors.invalid={0} is invalid.
errors.maxlength={0} can not be greater than {1} characters.
errors.minlength={0} can not be less than {1} characters.
errors.range={0} is not in the range {1} through {2}.
errors.required={0} is required.
errors.byte={0} must be an byte.
errors.date={0} is not a date.
errors.double={0} must be an double.
errors.float={0} must be an float.
errors.integer={0} must be an integer.
errors.long={0} must be an long.
errors.short={0} must be an short.
errors.creditcard={0} is not a valid credit card number.
errors.email={0} is an invalid e-mail address.
第二个:validation.xml是自己来定义form中的哪个字段都使用哪些验证规则.
如果在struts中用这个validator,就需要在struts-config.xml中加入
<plug-in
className="org.apache.struts.validator.ValidatorPlugIn">
<set-property
property="pathnames" value="/WEB-INF/validator-rules.xml,/WEB-INF/validate.xml"/>
</plug-in>
在struts中的的Form必须继承自ValidatorForm,这样能进行输入合法性检查.这时就不能重写validat()方法,因为在ValidatorForm中已经实现了validate()方法.
责任编辑：小草
