struts校验框架

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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！
  OK 完成！


本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/72940/showart_1162557.html