What is a redirect action in Struts 2?
Struts 2 – Redirect Action. The redirect result type calls the standard response.sendRedirect() method, causing the browser to create a new request to the given location.
How to check if action error messages are present in Struts2?
Struts 2 Result Pages. We are using Struts2 if conditional tag to check if there are any action error messages are present or not. hasActionErrors() method is defined in ActionSupport class that returns true if any action errors exists in the ValueStack.
What to do when form validation fails in Struts 2?
If validation fails for any form fields, we can add action errors and then Struts 2 API forwards the request to “input” result page where we can use this tag to show the error messages. This tag is helpful in server side validation of form fields and then returning the input page with error message. Syntax of this tag is:
How to check if action error messages are present in actionsupport?
We are using Struts2 if conditional tag to check if there are any action error messages are present or not. hasActionErrors () method is defined in ActionSupport class that returns true if any action errors exists in the ValueStack.
What are @annotations used in Struts 2 application?
Annotations used in struts 2 application. For simple annotation example of struts 2, we can use 3 annotations: 1) @Action annotation is used to mark the action class. 2) @Results annotation is used to define multiple results for one action. 3) @Result annotation is used to display single result.
How to deploy Hello World struts in Tomcat?
Now Right click on the project name and click Export > WAR File to create a War file. Then deploy this WAR in the Tomcat’s webapps directory. Finally, start Tomcat server and try to access URL http://localhost:8080/HelloWorldStruts2/index.action. This will give you following screen − Enter any value in the text box and submit the page.