Param-name javax.faces.application. config files /param-name

Note the following annotations shown in bold :. Because you are using JSF 2. In previous versions, you would need to declare them in the Faces configuration file faces-config. To view the Javadoc for all JSF 2.

The UserNumberBean constructor must generate a random number between 0 and 10 and store it in an instance variable. This partially forms the business logic for the application. Define a constructor for the UserNumberBean class. Enter the following code changes displayed in bold. The above code generates a random number between 0 and 10, and outputs the number in the server log. Fix imports. Random into the class. That is, beans in particular scopes are only created and initialized when they are needed by the application.

If the value of the eager attribute is true , and the managed-bean-scope value is "application", the runtime must instantiate this class when the application starts. This instantiation and storing of the instance must happen before any requests are serviced.

Because UserNumberBean is session-scoped, have it implement the Serializable interface. Use the hint badge to import java. Serializable into the class. To facilitate this, add userNumber and response properties to the class. Choose Getter and Setter. Create a response property. Declare a String named response. Create a getter method for response. This application will not require a setter.

For purposes of this tutorial however, just paste the below method into the class. The above method performs two functions: 1. It tests whether the user-entered number userNumber equals the random number generated for the session randomInt and returns a String response accordingly. It invalidates the user session if the user guesses the right number i.

This is necessary so that a new number is generated should the user want to play again. Import statements are automatically created for:. You can press Ctrl-Space on items in the editor to invoke code-completion suggestions and documentation support.

Click the web browser icon in the documentation window to open the Javadoc in an external web browser. You saw an example of this in the previous section, where JSF instantiated a UserNumberBean object when you ran the application. This notion is referred to as Inversion of Control IoC , which enables the container to take responsibility for managing portions of the application that would otherwise require the developer to write repetitious code. In the previous section you created a managed bean that generates a random number between 0 and You also created two properties, userNumber , and response , which represent the number input by the user, and the response to a user guess, respectively.

In this section, you explore how you can use the UserNumberBean and its properties in web pages. JSF enables you to do this using its expression language EL. This section also demonstrates how you can take advantage of JSF 2. The IDE provides support for this work through its code completion and documentation facilities, which you can invoke by pressing Ctrl-Space on items in the editor.

Start by making changes to index. Open the index. Either double-click the index. Simply uncomment them and comment out the HTML elements currently being used. Comment out the HTML form element. You can also apply this keyboard shortcut to other file types, such as Java and CSS. Place your cursor on any of the undeclared tags and press Alt-Enter and click Enter to add the suggested tag library.

If there are multiple options, make sure to select the tag that is displayed in the editor before clicking Enter. The value attribute can be used to specify the current value of the rendered component. Type in the code displayed in bold below. Within these delimiters, you specify the name of the managed bean and the bean property you want to apply, separated by a dot.

Also, when the page is requested and a value for userNumber has already been set, the value will automatically display in the rendered inputText component. For more information, see the Java EE 7 Tutorial: Specify the destination for the request that is invoked when clicking the form button.

Furthermore, due to JSF 2. The JSF runtime searches for a file named response. If you were using JSF 1. Steps 7 through 12 below are optional.

JSF will resolve the view name, page1 as view name is page and from-action in faces-config is navigationController. JSF by default performs a server page forward while navigating to another page and the URL of the application does not change. Here, when Page1 button under Forward is clicked, you will get the following result. Here when Page1 button under Redirect is clicked, you will get the following result.

Once you are ready with all the changes done, let us compile and run the application as we did in JSF - Create Application chapter. If everything is fine with your application, this will produce the following result. Chaand Sheikh. Configuring an Application with a Web Deployment Descriptor Web applications are commonly configured using elements contained in the web application deployment descriptor, web.

The servlet used to process JavaServer Faces requests The servlet mapping for the processing servlet The path to the configuration resource file, if it exists and is not located in a default location. The deployment descriptor can also include other, optional configurations, such as those that. Identifying the Servlet for Lifecycle Processing A requirement of a JavaServer Faces application is that all requests to the application that reference previously saved JavaServer Faces components must go through javax.

The following example shows the default configuration of the FacesServlet :. The following elements, used in the tutorial examples, specify an extension mapping:. When you use this mechanism, users access the application as shown in the following example:.

Expand the node of your project in the Projects tab. Double-click web. Expand the Context Parameters node. Click Add. In the Add Context Parameter dialog box: Enter javax. Enter the path to your configuration file in the Parameter Value field. Click OK. Repeat steps 1 through 7 for each configuration file. In the Projects tab, right-click the hello1 project and select Build.

This command deploys the project to the server. It then deploys the project to the server. GlassFish Server provides two ways to view the deployed web modules: the Administration Console and the asadmin command. Now that the web module is deployed, you can view it by opening the application in a web browser. By default, the application is deployed to host localhost on port The context root of the web application is hello1. If dynamic reloading is enabled, you do not have to redeploy an application or module when you change its code or deployment descriptors.

All you have to do is copy the changed pages or class files into the deployment directory for the application or module. The server checks for changes periodically and redeploys the application, automatically and dynamically, with the changes. This capability is useful in a development environment because it allows code changes to be tested quickly. Dynamic reloading is not recommended for a production environment, however, because it may degrade performance.

In addition, whenever a reload takes place, the sessions at that time become invalid, and the client must restart the session. To delete the class files and other build artifacts, go back to the Projects tab, right-click the project, and select Clean. From the File menu, choose Open Project. What's yours?