fieldchecks.html

struts api,学习使用struts必备的文档

</DD>
</DL>
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<A NAME="validateCreditCard(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
validateCreditCard</H3>
<PRE>
public static java.lang.Object <B>validateCreditCard</B>(java.lang.Object&nbsp;bean,
                                                  org.apache.commons.validator.ValidatorAction&nbsp;va,
                                                  org.apache.commons.validator.Field&nbsp;field,
                                                  <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors,
                                                  org.apache.commons.validator.Validator&nbsp;validator,
                                                  javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD>Checks if the field is a valid credit card number.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bean</CODE> - The bean validation is being performed on.<DD><CODE>va</CODE> - The <code>ValidatorAction</code> that is currently being performed.<DD><CODE>field</CODE> - The <code>Field</code> object associated with the current
      field being validated.<DD><CODE>errors</CODE> - The <code>ActionMessages</code> object to add errors to if any
      validation errors occur.<DD><CODE>validator</CODE> - The <code>Validator</code> instance, used to access
      other field values.<DD><CODE>request</CODE> - Current request object.<DT><B>Returns:</B><DD>true if valid, false otherwise.</DL>
</DD>
</DL>
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<A NAME="validateEmail(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
validateEmail</H3>
<PRE>
public static boolean <B>validateEmail</B>(java.lang.Object&nbsp;bean,
                                    org.apache.commons.validator.ValidatorAction&nbsp;va,
                                    org.apache.commons.validator.Field&nbsp;field,
                                    <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors,
                                    org.apache.commons.validator.Validator&nbsp;validator,
                                    javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD>Checks if a field has a valid e-mail address.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bean</CODE> - The bean validation is being performed on.<DD><CODE>va</CODE> - The <code>ValidatorAction</code> that is currently being performed.<DD><CODE>field</CODE> - The <code>Field</code> object associated with the current
      field being validated.<DD><CODE>errors</CODE> - The <code>ActionMessages</code> object to add errors to if any
      validation errors occur.<DD><CODE>validator</CODE> - The <code>Validator</code> instance, used to access
      other field values.<DD><CODE>request</CODE> - Current request object.<DT><B>Returns:</B><DD>True if valid, false otherwise.</DL>
</DD>
</DL>
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<A NAME="validateMaxLength(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
validateMaxLength</H3>
<PRE>
public static boolean <B>validateMaxLength</B>(java.lang.Object&nbsp;bean,
                                        org.apache.commons.validator.ValidatorAction&nbsp;va,
                                        org.apache.commons.validator.Field&nbsp;field,
                                        <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors,
                                        org.apache.commons.validator.Validator&nbsp;validator,
                                        javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD>Checks if the field's length is less than or equal to the maximum value.
  A <code>Null</code> will be considered an error.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bean</CODE> - The bean validation is being performed on.<DD><CODE>va</CODE> - The <code>ValidatorAction</code> that is currently being performed.<DD><CODE>field</CODE> - The <code>Field</code> object associated with the current
      field being validated.<DD><CODE>errors</CODE> - The <code>ActionMessages</code> object to add errors to if any
      validation errors occur.<DD><CODE>validator</CODE> - The <code>Validator</code> instance, used to access
      other field values.<DD><CODE>request</CODE> - Current request object.<DT><B>Returns:</B><DD>True if stated conditions met.</DL>
</DD>
</DL>
<HR>

<A NAME="validateMinLength(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
validateMinLength</H3>
<PRE>
public static boolean <B>validateMinLength</B>(java.lang.Object&nbsp;bean,
                                        org.apache.commons.validator.ValidatorAction&nbsp;va,
                                        org.apache.commons.validator.Field&nbsp;field,
                                        <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors,
                                        org.apache.commons.validator.Validator&nbsp;validator,
                                        javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD>Checks if the field's length is greater than or equal to the minimum value.
 A <code>Null</code> will be considered an error.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bean</CODE> - The bean validation is being performed on.<DD><CODE>va</CODE> - The <code>ValidatorAction</code> that is currently being performed.<DD><CODE>field</CODE> - The <code>Field</code> object associated with the current
      field being validated.<DD><CODE>errors</CODE> - The <code>ActionMessages</code> object to add errors to if any
      validation errors occur.<DD><CODE>validator</CODE> - The <code>Validator</code> instance, used to access
      other field values.<DD><CODE>request</CODE> - Current request object.<DT><B>Returns:</B><DD>True if stated conditions met.</DL>
</DD>
</DL>
<HR>

<A NAME="validateUrl(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)"><!-- --></A><H3>
validateUrl</H3>
<PRE>
public static boolean <B>validateUrl</B>(java.lang.Object&nbsp;bean,
                                  org.apache.commons.validator.ValidatorAction&nbsp;va,
                                  org.apache.commons.validator.Field&nbsp;field,
                                  <A HREF="../../../../org/apache/struts/action/ActionMessages.html">ActionMessages</A>&nbsp;errors,
                                  org.apache.commons.validator.Validator&nbsp;validator,
                                  javax.servlet.http.HttpServletRequest&nbsp;request)</PRE>
<DL>
<DD>Checks if a field has a valid url. Four optional variables can be
 specified to configure url validation.
 <ul>
    <li>Variable <code>allow2slashes</code> can be set to <code>true</code> or
        <code>false</code> to control whether two slashes are allowed -
        default is <code>false</code> (i.e. two slashes are NOT allowed).</li>
    <li>Variable <code>nofragments</code> can be set to <code>true</code> or
        <code>false</code> to control whether fragments are allowed -
        default is <code>false</code> (i.e. fragments ARE allowed).</li>
    <li>Variable <code>allowallschemes</code> can be set to <code>true</code> or
        <code>false</code> to control if all schemes are allowed - default
        is <code>false</code> (i.e. all schemes are NOT allowed).</li>
    <li>Variable <code>schemes</code> can be set to a comma delimited list of
        valid schemes. This value is ignored if <code>allowallschemes</code>
        is set to <code>true</code>. Default schemes allowed are "http",
        "https" and "ftp" if this variable is not specified.</li>
 </ul><DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>bean</CODE> - The bean validation is being performed on.<DD><CODE>va</CODE> - The <code>ValidatorAction</code> that is currently being performed.<DD><CODE>field</CODE> - The <code>Field</code> object associated with the current
      field being validated.<DD><CODE>errors</CODE> - The <code>ActionMessages</code> object to add errors to if any
      validation errors occur.<DD><CODE>validator</CODE> - The <code>Validator</code> instance, used to access
      other field values.<DD><CODE>request</CODE> - Current request object.<DT><B>Returns:</B><DD>True if valid, false otherwise.</DL>
</DD>
</DL>
<HR>

<A NAME="isString(java.lang.Object)"><!-- --></A><H3>
isString</H3>
<PRE>
protected static boolean <B>isString</B>(java.lang.Object&nbsp;o)</PRE>
<DL>
<DD>Return <code>true</code> if the specified object is a String or a <code>null</code>
  value.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - Object to be tested<DT><B>Returns:</B><DD>The string value</DL>
</DD>
</DL>
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