WebWork的Validation

       WebWork依赖XWork的校验框架，在action执行之前，来启动对action的输入数据的校验规则的运用。
1，添加校验器，在/WEB-INF/class添加一个名为validators.xml，添加自定义校验器

xml 代码

<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0//EN"
        "http://www.opensymphony.com/xwork/xwork-validator-1.0.dtd">
<validators>
    <validator name="required" class="com.opensymphony.xwork.validator.validators.RequiredFieldValidator"/>
    <validator name="requiredstring" class="com.opensymphony.xwork.validator.validators.RequiredStringValidator"/>
    <validator name="int" class="com.opensymphony.xwork.validator.validators.IntRangeFieldValidator"/>
    <validator name="double" class="com.opensymphony.xwork.validator.validators.DoubleRangeFieldValidator" />
    <validator name="date" class="com.opensymphony.xwork.validator.validators.DateRangeFieldValidator"/>
    <validator name="expression" class="com.opensymphony.xwork.validator.validators.ExpressionValidator"/>
    <validator name="fieldexpression" class="com.opensymphony.xwork.validator.validators.FieldExpressionValidator"/>
    <validator name="email" class="com.opensymphony.xwork.validator.validators.EmailValidator"/>
    <validator name="url" class="com.opensymphony.xwork.validator.validators.URLValidator"/>
    <validator name="visitor" class="com.opensymphony.xwork.validator.validators.VisitorFieldValidator"/>
    <validator name="conversion" class="com.opensymphony.xwork.validator.validators.ConversionErrorFieldValidator"/>
    <validator name="stringlength" class="com.opensymphony.xwork.validator.validators.StringLengthFieldValidator"/>
<!---->validators>

2，打开校验，在xwork定义interceptor,为需要开发校验的action开启拦截器,拦截器的校验范围

xml 代码

<interceptors>
            <!---->
            <interceptor name="adminOnly" class="adminInterceptor"/>
             <interceptor-stack name="defaultStack">
                <interceptor-ref name="exception"/>
                <interceptor-ref name="alias"/>
                <interceptor-ref name="servlet-config"/>
                <interceptor-ref name="prepare"/>
                <interceptor-ref name="i18n"/>
                <interceptor-ref name="chain"/>
                <interceptor-ref name="model-driven"/>
                <interceptor-ref name="fileUpload"/>
                <interceptor-ref name="static-params"/>
                <interceptor-ref name="params"/>
                <interceptor-ref name="conversionError"/>
                <interceptor-ref name="validation">
                    <param name="excludeMethods">cancel,execute,delete,edit,list,default<!---->param>
                <!---->interceptor-ref>
                <interceptor-ref name="workflow">
                    <param name="excludeMethods">input,back,cancel<!---->param>
                <!---->interceptor-ref>
            <!---->interceptor-stack>
            <!----><interceptor-stack name="validationWorkflowStack">
                <interceptor-ref name="defaultStack"/>
                <interceptor-ref name="validation"/>
                <interceptor-ref name="workflow"/>
            <!---->interceptor-stack>-->
            <interceptor-stack name="fileUploadStack">
                <interceptor-ref name="fileUpload"/>
                <interceptor-ref name="defaultStack"/>
            <!---->interceptor-stack>
            <interceptor-stack name="adminCheck">
                <interceptor-ref name="defaultStack"/>
                <interceptor-ref name="adminOnly"/>
            <!---->interceptor-stack>
        <!----><!---->interceptors>

3,校验规则，每个action类，指定在ActionName-validation.xml文件中，

xml 代码

<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN"
        "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
    <field name="customerCreditDetails.customer.id">
        <field-validator type="required">
            <message key="errors.required"/>
        <!----><!---->field-validator>
        <field-validator type="stringlength">
            <param name="minLength">1<!---->param>
            <param name="trim">true<!---->param>
            <message key="errors.required"/>
        <!----><!---->field-validator>
   <!---->field>
   <field name="customerCreditDetails.amount">
        <field-validator type="required">
            <message key="errors.required"/>
        <!----><!---->field-validator>
        <field-validator type="double">
            <param name="minInclusive">1.0<!---->param>
            <message key="errors.intLeast"/>
        <!----><!---->field-validator>
    <!----><!---->field>
    <field name="customerCreditDetails.operateTime">
        <field-validator type="required">
            <message key="errors.required"/>
        <!----><!---->field-validator>
        <field-validator type="date">
            <message key="errors.required"/>
        <!----><!---->field-validator>
    <!---->field>
    <field name="customerCreditDetails.currencyType">
        <field-validator type="required">
            <message key="errors.required"/>
        <!----><!---->field-validator>
        <field-validator type="int">
            <param name="min">1<!---->param>
            <message key="errors.required"/>
        <!----><!---->field-validator>
    <!---->field>
    <field name="customerCreditDetails.payType">
        <field-validator type="required">
            <message key="errors.required"/>
        <!---->field-validator>
        <field-validator type="int">
            <param name="min">1<!---->param>
            <message key="errors.required"/>
        <!----><!---->field-validator>
    <!----><!---->field>
<!---->>

这是简单验证