?? fieldchecks.java
字號:
* vars attribute).
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return True if in range, false otherwise.
*/
public static boolean validateFloatRange(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (!GenericValidator.isBlankOrNull(value)) {
try {
float floatValue = Float.parseFloat(value);
float min = Float.parseFloat(field.getVarValue("min"));
float max = Float.parseFloat(field.getVarValue("max"));
if (!GenericValidator.isInRange(floatValue, min, max)) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
} catch (Exception e) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
}
return true;
}
/**
* Checks if the field is a valid credit card number.
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return true if valid, false otherwise.
*/
public static Object validateCreditCard(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
Object result = null;
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (GenericValidator.isBlankOrNull(value)) {
return Boolean.TRUE;
}
result = GenericTypeValidator.formatCreditCard(value);
if (result == null) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
}
return result == null ? Boolean.FALSE : result;
}
/**
* Checks if a field has a valid e-mail address.
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return True if valid, false otherwise.
*/
public static boolean validateEmail(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (!GenericValidator.isBlankOrNull(value) && !GenericValidator.isEmail(value)) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
} else {
return true;
}
}
/**
* Checks if the field's length is less than or equal to the maximum value.
* A <code>Null</code> will be considered an error.
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return True if stated conditions met.
*/
public static boolean validateMaxLength(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (value != null) {
try {
int max = Integer.parseInt(field.getVarValue("maxlength"));
if (!GenericValidator.maxLength(value, max)) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
} catch (Exception e) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
}
return true;
}
/**
* Checks if the field's length is greater than or equal to the minimum value.
* A <code>Null</code> will be considered an error.
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return True if stated conditions met.
*/
public static boolean validateMinLength(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (!GenericValidator.isBlankOrNull(value)) {
try {
int min = Integer.parseInt(field.getVarValue("minlength"));
if (!GenericValidator.minLength(value, min)) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
} catch (Exception e) {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
}
return true;
}
/**
* 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>
*
* @param bean The bean validation is being performed on.
* @param va The <code>ValidatorAction</code> that is currently being performed.
* @param field The <code>Field</code> object associated with the current
* field being validated.
* @param errors The <code>ActionMessages</code> object to add errors to if any
* validation errors occur.
* @param validator The <code>Validator</code> instance, used to access
* other field values.
* @param request Current request object.
* @return True if valid, false otherwise.
*/
public static boolean validateUrl(Object bean,
ValidatorAction va, Field field,
ActionMessages errors,
Validator validator,
HttpServletRequest request) {
String value = null;
if (isString(bean)) {
value = (String) bean;
} else {
value = ValidatorUtils.getValueAsString(bean, field.getProperty());
}
if (GenericValidator.isBlankOrNull(value)) {
return true;
}
// Get the options and schemes Vars
boolean allowallschemes = "true".equalsIgnoreCase(field.getVarValue("allowallschemes"));
int options = allowallschemes ? UrlValidator.ALLOW_ALL_SCHEMES : 0;
if ("true".equalsIgnoreCase(field.getVarValue("allow2slashes"))) {
options += UrlValidator.ALLOW_2_SLASHES;
}
if ("true".equalsIgnoreCase(field.getVarValue("nofragments"))) {
options += UrlValidator.NO_FRAGMENTS;
}
String schemesVar = allowallschemes ? null : field.getVarValue("schemes");
// No options or schemes - use GenericValidator as default
if (options == 0 && schemesVar == null) {
if (GenericValidator.isUrl(value)) {
return true;
} else {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
}
// Parse comma delimited list of schemes into a String[]
String[] schemes = null;
if (schemesVar != null) {
StringTokenizer st = new StringTokenizer(schemesVar, ",");
schemes = new String[st.countTokens()];
int i = 0;
while (st.hasMoreTokens()) {
schemes[i++] = st.nextToken().trim();
}
}
// Create UrlValidator and validate with options/schemes
UrlValidator urlValidator = new UrlValidator(schemes, options);
if (urlValidator.isValid(value)) {
return true;
} else {
errors.add(field.getKey(), Resources.getActionMessage(validator, request, va, field));
return false;
}
}
/**
* Return <code>true</code> if the specified object is a String or a <code>null</code>
* value.
*
* @param o Object to be tested
* @return The string value
*/
protected static boolean isString(Object o) {
return (o == null) ? true : String.class.isInstance(o);
}
}
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