What is XML based validation in Struts 2?

Struts2 XML based validation provides more options of validation like email validation, integer range validation, form validation field, expression validation, regex validation, required validation, requiredstring validation, stringlength validation and etc.

Where is validation XML file in Struts 2?

In the example application, the XML validation file is named EditAction-validation. xml (see src/main/resources/org/apache/struts/edit/action). Struts 2 provides several different validators that you can use in the XML validation file. See Validation for a list of validators you can employ.

How does Struts 2 validation work?

Struts Action 2 relies on a validation framework provided by XWork to enable the application of input validation rules to your Actions before they are executed. Struts2 Validation Framework allows us to separate the validation logic from actual Java/JSP code, where it can be reviewed and easily modified later.

What types of validators are available in XML based validation in Struts 2?

Struts 2 – XML Based Validators

  • date validator.
  • double validator.
  • email validator.
  • int validator.
  • regex validator.
  • required validator.
  • requiredstring validator.
  • stringlength validator.

How does Struts2 validation work Mcq?

interceptor. Q 4 – How Struts 2 validation works? A – When the user presses the submit button, Struts 2 will automatically execute the validate method. B – if any of the if statements listed inside the validate method are true, Struts 2 will call its addFieldError method.

How does XML validation work?

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 well-formed document follows the basic syntactic rules of XML, which are the same for all XML documents.

How does Struts 2 validation work Mcq?

When validate method is called in Struts 2?

validate method If any of the if statements are true, Struts 2 will call its addFieldError method (which our Action class inherited by extending ActionSupport). If any errors have been added then Struts 2 will not proceed to call the execute method.

Which one is supported by Struts2?

Struts2 support OGNL expression language and it performs two important tasks in Struts 2 – data transfer and type conversion. OGNL is flexible and we can easily extend it to create our own custom converter class.

Which one is supported by Struts 2?

What is model in Struts 2 framework?

Model contains the data and the business logic. In Struts 2 the model is implemented by the Action component. View is the presentation component of the MVC Pattern. In Struts 2 the view is commonly implemented using JSP, Velocity Template, Freemaker or some other presentation-layer technology.

How can you validate XML?

In this article

  1. Summary.
  2. Requirements.
  3. Create an XML document.
  4. Create a DTD and link to the XML document.
  5. Perform validation by using a DTD.
  6. Create an XDR schema and link to the XML document.
  7. Perform validation by using an XDR schema.
  8. Create an XSD schema and link to the XML document.