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Error Message In Struts2

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QuestionsJava Interview QuestionsJDBC Interview QuestionsServlet Interview QuestionsJSP Interview QuestionsStruts2 Interview QuestionsSpring Interview QuestionsHibernate Interview QuestionsJSF Interview QuestionsResourcesStoreHome » Struts 2 » Struts 2 Action Error and Action MessageStruts 2 Action struts2 error handling Error and Action MessageSeptember 26, 2016 by Pankaj 13 Comments 404 error in struts2 Struts 2 provide a lot of custom tags for development and we have already looked field error in struts2 into Data Tags, Control Tags and UI Tags. Today we will look into two tags that are related to action class response that we can use

Bean Message Struts2

in the result pages.Struts 2 Action Error and Action Messageactionerror tag: This tag is used in conjunction with Action class validation for form fields. 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 struts2 message tag 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:We will look it's usage with a simple project to explain how easy s:actionerror is to use.actionmessage tag: This tag is used to show some custom message added by Action classes in the result page. For example, we can use this tag to welcome a user and show them last login time at the top of the page. Syntax of this tag is:Both these tags generated an unordered list of action errors or messages added in the action class. Let's create a simple project to show their usage. Our final project will look like below image.Struts 2 Configuration Filesweb.xml Struts2ActionErrorMessages</display-name> struts2</filter-name> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> struts2</filter-name> /*</url-pattern> </filter-mapping> </web-app> pom.xml How To Display Error Message In Jsp Using Struts2

Implementing Classes: ActionSupport, DefaultActionSupport, DelegatingValidatorContext, ValidationAwareSupport, VisitorFieldValidator.AppendingValidatorContext public interface ValidationAware

Struts Action Messages Example

ValidationAware classes can accept Action (class level) or field level error messages. Action level messages are http://www.journaldev.com/2274/struts-2-action-error-action-message kept in a Collection. Field level error messages are kept in a Map from String field name to a List of field error msgs. Author: plightbo Method Summary Methods Modifier and Type Method https://struts.apache.org/maven/struts2-core/apidocs/com/opensymphony/xwork2/interceptor/ValidationAware.html and Description void addActionError(StringanErrorMessage) Add an Action-level error message to this Action. void addActionMessage(StringaMessage) Add an Action-level message to this Action. void addFieldError(StringfieldName, StringerrorMessage) Add an error message for a given field. Collection<String> getActionErrors() Get the Collection of Action-level error messages for this action. Collection<http://stackoverflow.com/questions/16672435/displaying-validation-error-messages-in-struts2 About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss https://coderanch.com/t/450811/Struts/framework/Struts-Custom-display-error-messages Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Displaying Validation Error in struts2 Messages in Struts2 up vote 1 down vote favorite 1 I am new to Struts 2, have worked in Struts 1 earlier. How can we bind a error message with a UI component (e.g. a Text box) ? I don't want the error message to be a global one. For achieving the same in Struts 1: In the form validate method, I used this: ActionErrors error message in errors = new ActionErrors(); if(userName != null && userName.length() <= 0) errors.add("userName",new ActionError("error.userName.required")); and in the UI, for displaying the message: In Struts 2, If I extend the Action class with ActionSupport and use this: addActionError(getText("Please enter UserId")); Then it seems to be a global message which can be displayed in the UI using: Hence not sure how to achieve the same functionality in Struts 2. Kindly let me know on this. java web struts2 struts share|improve this question asked May 21 '13 at 14:22 user182944 1,7081652118 add a comment| 1 Answer 1 active oldest votes up vote 4 down vote accepted The tag would be the closest equivalent: On the Java side you'd use ValidationAware.addFieldError to add field-specific messages: public class AnyAction extends ActionSupport { public void validate() { addFieldError("userName", "User ID is required"); } } That said, for the low-level validations, I'd stick to the default XML-based mechanism when possible, since it does a lot of this work for you, and makes working with I18N/properties a little easier. share|improve this answer answered May 21 '13 at 15:46 Dave

This Site Careers Other all forums Forum: Struts Struts 2: Custom display of error messages Dave Alvarado Ranch Hand Posts: 436 posted 7 years ago Hi, I'm migrating my Struts 1 app to Struts 2. In my Struts 2 app, I have an interceptor class that is meant to validate my error fields. It has this method to add action errors ... private void addActionError(ActionInvocation invocation, String message) { Object action = invocation.getAction(); if(action instanceof ValidationAware) { ((ValidationAware) action).addActionError(message); } } How do I display these on my JSP? On my target JSP, I have this Struts 1 code (which is obviously invalid in Struts 2):

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add action error in struts2

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