Trying to Validate the name of a file with a Validator

Question

Hi, Im trying to validate an file name that is sent with a form
I want that the Validator Checks if the filename ends with some extensions (.jpg ,etcc) for only addmit one type of files (images)
I ve build my own Pluggable Validator , but I dont know how to extract the filename from Validator.
Can anyone help me??
the Code is something like this
where
package jmar5439.webpage.validator;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import org.apache.struts.action.*;
import org.apache.commons.validator.ValidatorAction;
import org.apache.commons.validator.*;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.util.ValidatorUtils;
import org.apache.commons.validator.Validator;
import org.apache.struts.validator.Resources;
import org.apache.commons.logging.LogFactory;
import jmar5439.webpage.action.InsertRoomAction;
import org.apache.commons.logging.Log;
public class ImageFileValidator implements Serializable {
// public ImageFileValidator() {}
public static boolean validateImageFile(Object bean, ValidatorAction va,
Field field, ActionMessages errors,
HttpServletRequest request, Validator validator) {
String value = null;
if (field.getProperty() != null && field.getProperty().length() > 0) {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
String file = new String(value);
file = file.toLowerCase();
if (!GenericValidator.isBlankOrNull(value)) {
try {
if (!file.endsWith(".jpeg") || !file.endsWith(".gif") ||
!file.endsWith(".jpg")) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (Exception e) {
errors.add(field.getKey(),Resources.getActionMessage(request, va,field));
return false;
return false;
return false;
I ve declared
<form-property name="file"
               type="org.apache.struts.upload.FormFile"/>
in struts-config file and
<field property="file"
                    depends="imagefile">
in validate file.
Thanks

Answer 1

I ve solved like this
package jmar5439.webpage.validator;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import org.apache.struts.action.*;
import org.apache.commons.validator.ValidatorAction;
import org.apache.commons.validator.*;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.util.ValidatorUtils;
import org.apache.commons.validator.Validator;
import org.apache.struts.validator.Resources;
import org.apache.commons.logging.LogFactory;
import jmar5439.webpage.action.InsertRoomAction;
import org.apache.commons.logging.Log;
import org.apache.struts.upload.FormFile;
import org.apache.commons.beanutils.PropertyUtils;
import java.lang.reflect.*;
public class ImageFileValidator implements Serializable {
// public ImageFileValidator() {}
public static boolean validateImageFile(Object bean, ValidatorAction va,
Field field, ActionMessages errors,
Validator validator,
HttpServletRequest request) {
Log log = LogFactory.getLog(ImageFileValidator.class);
//log.info(form.toString() );
String value = ValidatorUtils.getValueAsString(
bean,
field.getProperty());
if (!GenericValidator.isBlankOrNull(value)) {
try {
FormFile file = (FormFile) PropertyUtils.getSimpleProperty(bean,
"file");
String filename=file.getFileName().toLowerCase() ;
//log.info("Filename:" + file.getFileName());
if (filename.endsWith(".jpeg") ||
filename.endsWith(".jpg") ||
filename.endsWith(".gif")) {
log.info("return true");
return true;
} else {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
log.info("return false");
return false;
} catch (NoSuchMethodException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (InvocationTargetException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
} catch (IllegalAccessException ex) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
return false;
//return false;
// log.info("Entra0");
/* if (field.getProperty() != null && field.getProperty().length() > 0) {
// log.info("Entra");
// value = ValidatorUtils.getValueAsString(bean, field.getProperty());
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
String file = new String(value);
file = file.toLowerCase();
if (!GenericValidator.isBlankOrNull(value)) {
// log.info("Entra2");
try {
if (!file.endsWith(".jpeg") || !file.endsWith(".gif") ||
!file.endsWith(".jpg")) {
errors.add(field.getKey(),
Resources.getActionMessage(request, va,
field));
//log.info("Entra3");
return false;
} catch (Exception e) {
errors.add(field.getKey(),Resources.getActionMessage(request, va,field));
return false;
return false;
// return true;
} else {
return false;
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