Question

Explain how you can handle the user input with the help of Xml validation.

Answer 1

Answer:

XML validation is the process of checking a document written in XML (eXtensible Markup Language) to confirm that it is both well-formed and also "valid" in that it follows a defined structure. ... A valid document also respects the rules dictated by a particular DTD or XML schema....

Answer 2

Answer:

XML-based validation You can use a separate XML file that contains your validation rules to validate a user's form field entries. ActionClassName-validation.xml must be the name of the XML file containing the validation rules.

Explanation:

XML-based validation:

You can use a separate XML file that contains your validation rules to validate a user's form field entries. ActionClassName-validation.xml must be the name of the XML file containing the validation rules. The XML validation file for the sample application is called EditAction-validation.xml and can be found in the src/main/resources/org/apache/struts/edit/action directory.

XML Validator Format

In the XML validation file (for this example that is EditAction-validation.xml), is this XML:

XML Validator Required String

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.3//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">

<validators>

   <validator type="requiredstring">

       <param name="fieldname">personBean.firstName</param>

       <message>First name is required.</message>

   </validator>

</validators>

You can have one or more validator nodes inside the validator node. Which validator you want the Struts 2 framework to employ is specified by the type property (see Validation ). The framework is instructed by the form field input to apply the rule by the param name=" field name" node. The form fields and their name values are listed in the edit.JSP; if you are unfamiliar with how to utilise Struts 2 form tags, please examine Struts 2 Form Tags. The framework is instructed on what message to display if the validation is unsuccessful using the message node.

learn more about it

https://brainly.in/question/13107596

https://brainly.in/question/7498416

#SPJ2