struts2.0之校验器

< validators > 
    < validator name ="required" class ="com.opensymphony.xwork2.validator.validators.RequiredFieldValidator" /> 
    < validator name ="requiredstring" class ="com.opensymphony.xwork2.validator.validators.RequiredStringValidator" /> 
    < validator name ="int" class ="com.opensymphony.xwork2.validator.validators.IntRangeFieldValidator" /> 
    < validator name ="double" class ="com.opensymphony.xwork2.validator.validators.DoubleRangeFieldValidator" /> 
    < validator name ="date" class ="com.opensymphony.xwork2.validator.validators.DateRangeFieldValidator" /> 
    < validator name ="expression" class ="com.opensymphony.xwork2.validator.validators.ExpressionValidator" /> 
    < validator name ="fieldexpression" class ="com.opensymphony.xwork2.validator.validators.FieldExpressionValidator" /> 
    < validator name ="email" class ="com.opensymphony.xwork2.validator.validators.EmailValidator" /> 
    < validator name ="url" class ="com.opensymphony.xwork2.validator.validators.URLValidator" /> 
    < validator name ="visitor" class ="com.opensymphony.xwork2.validator.validators.VisitorFieldValidator" /> 
    < validator name ="conversion" class ="com.opensymphony.xwork2.validator.validators.ConversionErrorFieldValidator" /> 
    < validator name ="stringlength" class ="com.opensymphony.xwork2.validator.validators.StringLengthFieldValidator" /> 
    < validator name ="regex" class ="com.opensymphony.xwork2.validator.validators.RegexFieldValidator" /> 
</ validators >