Class RequiredFieldValidator
java.lang.Object
org.apache.struts2.validator.validators.ValidatorSupport
org.apache.struts2.validator.validators.FieldValidatorSupport
org.apache.struts2.validator.validators.RequiredFieldValidator
- All Implemented Interfaces:
- FieldValidator,- ShortCircuitableValidator,- Validator
 RequiredFieldValidator checks if the specified field is not null.
 
 
 
- fieldName - field name if plain-validator syntax is used, not needed if field-validator syntax is used
 
           <validators>
         <!-- Plain Validator Syntax -->
         <validator type="required">
             <param name="fieldName">username</param>
             <message>username must not be null</message>
         </validator>
         <!-- Field Validator Syntax -->
         <field name="username">
             <field-validator type="required">
                   <message>username must not be null</message>
             </field-validator>
         </field>
     </validators>
 
 - Author:
- rainerh
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Field SummaryFields inherited from class org.apache.struts2.validator.validators.FieldValidatorSupportcurrentValue, fieldName, typeFields inherited from class org.apache.struts2.validator.validators.ValidatorSupportdefaultMessage, EMPTY_STRING, messageKey, stack, textProviderFactory
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Constructor SummaryConstructors
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Method SummaryMethods inherited from class org.apache.struts2.validator.validators.FieldValidatorSupportgetCurrentValue, getFieldName, getValidatorType, setFieldName, setValidatorTypeMethods inherited from class org.apache.struts2.validator.validators.ValidatorSupportaddActionError, addFieldError, getDefaultMessage, getFieldValue, getMessage, getMessageKey, getMessageParameters, getValidatorContext, isShortCircuit, parse, setDefaultMessage, setMessageKey, setMessageParameters, setShortCircuit, setTextProviderFactory, setValidatorContext, setValueStackMethods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.apache.struts2.validator.ValidatorgetDefaultMessage, getMessage, getMessageKey, getMessageParameters, getValidatorContext, setDefaultMessage, setMessageKey, setMessageParameters, setValidatorContext, setValueStack
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Constructor Details- 
RequiredFieldValidatorpublic RequiredFieldValidator()
 
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Method Details- 
validateDescription copied from interface:ValidatorThe validation implementation must guarantee that setValidatorContext will be called with a non-null ValidatorContext before validate is called.- Parameters:
- object- the object to be validated.
- Throws:
- ValidationException- is thrown if there is validation error(s).
 
 
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