Error Messages In Jsf 2.0
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site 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 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 How to display my application's errors in JSF? up vote 35 down vote favorite 20 In my JSF/Facelets app, here's a simplified version of part of my form: I'd like to be able to assign an error to a specific h:message tag based on something happening in the continueButton() method. Different errors need to be displayed for newPassword and newPassword2. A validator won't really work, because the method that will deliver results (from the DB) is run in the continueButton() method, and is too expensive to run twice. I can't use the h:messages tag because the page has multiple places that I need to display different error messages. When I tried this, the page displayed duplicates of every message. I tried this as a best guess, but no luck: public Navigation continueButton() { ... expensiveMethod(); if(...) { FacesContext.getCurrentInstance().addMessage("newPassword", new FacesMessage("Error: Your password is NOT strong enough.")); } } What am I missing? Any help would be appreciated! jsf error-handling facelets share|improve this question asked Nov 24 '08 at 23:02 Eric Noob 6963914 add a comment| 7 Answers 7 active oldest votes up vote 51 down vote FacesContext.addMessage(String, FacesMessage) requires the component's clientId, not it's id. If you're wondering why, think about having a control as a child of a dataTable, stamping out different values with the same control for each row - it would be possible to have a different message printed for each row. The id is always the same; the clientId is unique per row. So "myform:mybutton" is the correct value, but hard-coding this is ill-advised. A lookup would create less coupling between the view and the
Wiki Index MyFaces Website License Community Mailing Lists MyFaces@Twitter Development Source Code MyFaces Core Issue Tracker Sponsorship Thanks Sponsoring Apache Attachments (0) Page History Restrictions Page Information Resolved comments Link to this Page… View in Hierarchy Delete comments View Source Export to PDF Export to EPUB Export to Word Copy Page Tree Delete Page Tree Apache MyFaces … Index MyFaces Core User Guide JSF and MyFaces HowTo's Managing Errors - Infos - Warnings Displaying Errors - Infos - Warnings in http://stackoverflow.com/questions/315804/how-to-display-my-applications-errors-in-jsf JSF pages Skip to end of metadata Created by Leonardo Uribe, last modified on Sep 03, 2011 Go to start of metadata Up Managing Errors - Infos - Warnings Handling Server Errors Next One common question about JSF is how to manage messages of various types, which are generated by JSF components and backing beans. This discussion https://cwiki.apache.org/confluence/display/MYFACES/Displaying+Errors+-+Infos+-+Warnings+in+JSF+pages is designed as an introduction to the topic and focused on entry to mid-level JSF users. The pattern described here is just one approach that we developed which meets our needs for: Providing a consistent and generic means for including processing messages in all JSF pages. Decorating the messages with images and styles to differentiate severity levels to the user which is browser safe. Add additional messages when appropriate. Be localizable. Not affect page layouts when no errors are generated. Discussion Our user-interface requirements dictate that (a) as far as the user is concerned there is no such thing as an error, (b) the system should provide as little information as necessary to draw the user's attention to any issues raised during processing and help them correct the problem, (c) inform on all operations which change state in the back-end (success as well as failure), and (d) provide a way out (i.e. graceful means for backing out of any failed operation). While (a) and (d) require detai
Packaging and Deploying Node.js About Us Contact Us Write for JavaBeat Subscribe Join Us (JBC) Home >> JSF >> JSF 2 Message and Messages ExampleJSF 2 Message and Messages Example March 27, http://javabeat.net/jsf-2-message-messages/ 2014 by Amr Mohammed Leave a Comment The and can be used for displaying the error, fatal error, warning and information messages for single component and for the whole current view respectively. When https://mobiarch.wordpress.com/2013/07/18/user-friendly-validation-error-message-in-jsf-2/ it comes to develop a JSF page, it happens for a component/view to have a messages that tell the user about some missing or wrong data must be provided/fixed to ensure that the business error messages logic for your managed beans can execute smoothly and without any problems. The message/messages component provides the capability for the developer to provide the desired style for the different kind of messages, so the styles for different messages can provide a deep identification in which the user can discriminate between those that are just providing an information from those that couldn't proceed any further if they aren't fixed. error messages in The severity level which passed through adding a faces message into component/view determine the type of the messages whether they are error or even just an information. Any message/messages contains either type of information; detail and summary, where the developer has controlled if it does wish to render the detail alone or the summary alone or it has the both. One remaining important issue, in that when it comes to use the message/messages, the bundled messages are brought for making a localization of component/view messages. Also Read: JSF 2 Tutorials JSF Tutorials Introduction to JSF This tutorial will explain the proper way for using the message and messages for displaying the messages for a specific component or for the current view. 1. Managed Bean IndexBean.java package net.javabeat.jsf; import java.util.Locale; import javax.faces.application.FacesMessage; import javax.faces.bean.ManagedBean; import javax.faces.bean.SessionScoped; import javax.faces.context.FacesContext; @ManagedBean @SessionScoped public class IndexBean { private String locale = "en"; private String message = ""; private String email = ""; public String getLocale() { return locale; } public void setLocale(String locale) { this.locale = locale; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public String getEmail() { return email; } public void setEmail(String email) { thi
prepended with the client ID of the component. This makes the error message completely unacceptable. In this article, we will learn how to progressively improve the error message. The Default Behavior Let us say that we have a controller class as follows. @Named @RequestScoped public class HelloController { @Size(min=5, message="Name must be at least 5 letters long") private String name; //Getter setter etc... } And an input text for the "name" property in a form: Name: By default, the validation error message will look something like this. Of course, this is far from ideal. Using the "label" Attribute A simple way to improve the error message is to add a label attribute to the component. Name: Now, the error message will look like this. That's better. Still, it looks like a hack. Override Default JSF Message The root of the problem is that JSF by default attempts to prepend either the client ID or the label to the message followed by a ":". The structure of the message is defined using the following message key: javax.faces.validator.BeanValidator.MESSAGE={1}: {0} Where {0} is the error message and {1} is the client ID. To fix the problem properly, we will need to override this message. First, create your own message properties file. You can call it anything. We will call in ApplicationMessages.properties. We will put it in the root of the source folder. The file will look like this. javax.faces.validator.BeanValidator.MESSAGE={0} Then, register the file in faces-config.xml. ApplicationMessages Now, the error message will look like this. Share this:TwitterFacebookLike this:Like Loading... Related July 18, 2013bibhas2 Post navigation ← Special Root Level ServletPaths Installing and Using WebSphere 8.5 Liberty Profile in RAD9.0 → Leave a Reply Cancel reply Enter your comment here... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are commenting using your Twitter account. (LogOu