Using Validator verification in Struts development is the basic problem that should be considered
First, in the last position in the struts-config.xml, plus
with
Value = "/ Web-inf / validator-rules.xml, / web-inf / value.xml" /> Among them, Validator-rules.xml is used to define verification rules, and validation.xml is used to set the table item that needs to be defined, and what information is to be verified, what information is returned when the error is wrong. ApplicationResources is the resource file for the error message to display. Examples are as follows: Validator-rules.xml:
"- // Apache Software Foundation // DTD Commons Validator Rules Configuration 1.0 // En" "http://jakarta.apache.org/commons/dtds/Validator_1_0.dtd"> ClassName = "org.apache.struts.validator.fieldchecks" Method = "ValidateRequired" Methodparams = "java.lang.object, Org.apache.commons.valiDator.validatorAction, Org.apache.commons.validator.field, Org.apache.struts.Action.Actionerro, Javax.Servlet.http.httpservletRequest " Msg = "ErrorS.Required"> The MSG is an error to display when "required" verification fails. VALIDATION.XML: Depends = "Required"> ARG0 is an error message to be added when the different Property verification fails Depends = "Required"> ApplicationResources.Properties: # Resources for parameter 'com.ln.struts.ApplicationResources' # Project P / Struts Errors.Header = Errors.footer = Error.Name = a username Error.Password = a Password Errors.Required = {0} is Required Then use it on the page It is said that it is said. (Note: The Property here is consistent with the field's property value in validation.xml).
