what is the best way to have pdf if all my pages are in jsf? i'm planning to let user to i've actually read thru the itext.. and one of the example their using jsp with. Java Server Faces (JSF). ▫ JSF is used for building Java Web application interfaces. For example, the same model should be usable with a Swing application. Understanding JSF development approaches Exploring the .. sion of this book (available in PDF) as well as the print version. Henri Yandell is . first is a Component Summary table; here's an example: Don't worry about what.
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Generic JSF 2.x example Generic JSF 1.x example In case you need to stream a dynamically generated file, such as PDF or XLS, then simply provide output. Java Server Faces (JSF) is a Java-based web application framework intended to All the examples in this tutorial have been written using Eclipse IDE. Hence. JSF Programming Cookbook i. JSF Programming 4 Managed Beans Example. WhatisJSF2.x? . 10 Button and CommandButton Example.
Also, the structure of iText allows you to generate any of the above-mentioned types of documents with the same code.
The iText library contains classes to generate PDF text in various fonts, generate tables in PDF document, add watermarks to pages, and so on. There are many more features available with iText which I will leave on you to explore. To add iText into your application, include following maven repository into your pom.
If you need to generate a PDF document from scratch, you will use the Document class. First you must create a Document instance. Then you must open it. After that you add content to the document. Finally you close the Document instance. In a paragraph you can set the paragraph alignment, indentation and spacing before and after the paragraph. Chapter : This class represents a chapter in the PDF document. It is created using a Paragraph as title and an int as chapter number.
Font : This class contains all specifications of a font, such as family of font, size, style, and color.
Various fonts are declared as static constants in this class. List : This class represents a list, which, in turn, contains a number of ListItems. When the user inserts data and tries to create a new user, the input data will be validated according to the Bean Validation annotations at the Customer entity.
A missing first name, a wrong formatted email or a day of birth in the future will be detected and an error message will be displayed: Considering the use case and the targeted audience I think this approach is a really productive way of creating web applications. With the PrimeFaces components, you get a set of ready-to-use elements and with the correct theme, they will also look really nice. Writing this application with a SPA and a backend of your choice would take quite more time and you would produce more code.
Try this example for yourself or have a look at my GitHub repository for the full code base and a step-by-step tutorial to get this running on your machine in the README. There is quite more to discover with JSF 2. WebSockets, Internationalization, Security … , so stay tuned for the next blog posts. A debug session starts, and the project welcome page opens in the browser. You might be prompted to confirm the server port for debugging the application.
In the browser, enter a number into the form and click the 'submit' button. The debugger is suspended within the setUserNumber method. You see the variable values for the point at which the debugger is suspended.
In the image above, a value of '4' is provided for the userNumber variable in the setUserNumber signature. The number 4 was entered into the form.
Beneath it, you see that the value for the userNumber property is currently null. In the Debugger toolbar, click the Step Into button. The debugger executes the line on which it is currently suspended. The Variables window refreshes, indicating changes from the execution.
The userNumber property is now set to the value entered in the form. Either double-click the response. Use the editor's code completion support to add required JSF namespaces to the file. When selecting a JSF or Facelets tag through code completion, the required namespace is automatically added to the document's root element.
For more information, see JSF 2. Place your cursor on any of the undeclared tags and press Ctrl-Space. Code completion suggestions and documentation support displays. Click Enter. You want to set the button so that when a user clicks it, he or she is returned to the index page.
To accomplish this, use the commandButton's action attribute. Type in the code displayed in bold. When a user clicks the form button, the JSF runtime searches for a file named index. It assumes the file extension is the same as the extension used by file from which the request originated response.
Replace the static "[ response here ]" text with the value of the UserNumberBean's response property. To do this, use the JSF expression language. Enter the following in bold. When the welcome page displays in the browser, enter a number and click submit. You see the response page display similar to the following provided you did not guess the correct number.
The Back button is not displaying in the correct location. Compare it to the original version. The following two steps correct these points, respectively. Place your cursor between outputText and value, insert a space, then press Ctrl-Space to invoke code-completion.
Scroll down to choose the escape attribute and inspect the documentation. As indicated by the documentation, the escape value is set to true by default. This means that any characters that would normally be parsed as html are included in the string, as shown above.
Setting the value to false enables any characters that can be parsed as html to be rendered as such. Click Enter, then type false as the value. Scroll down to choose the prependId attribute and inspect the documentation. Then click Enter, and type false as the value. Because the Back button relies on the backButton style rule defined in stylesheet. This can be avoided by setting prependId to false. Enter a number in the welcome page, then click Submit. Click the Back button.
Because the current value of UserNumberBean's userNumber property is bound to the JSF inputText component, the number you previously entered is now displayed in the text field. If you cannot see the number in the server log, try rebuilding the application by right-clicking the project node and choosing Clean and Build. Type in the correct number and click Submit. The application compares your input with the currently saved number and displays the appropriate message. Click the Back button again.
Notice that the previously entered number is no longer displayed in the text field. Recall that UserNumberBean's getResponse method invalidates the current user session upon guessing the correct number.
Facelets is a light-weight templating framework that supports all of the JSF UI components and is used to build and render the JSF component tree for application views. It also provides development support when EL errors occur by enabling you to inspect the stack trace, component tree, and scoped variables. Although you may not have realized it, the index.
Facelets pages use the. The purpose of this section is to familiarize you with Facelets templating. For projects containing many views, it is often advantageous to apply a template file that defines the structure and appearance for multiple views. When servicing requests, the application inserts dynamically prepared content into the template file and sends the result back to the client.
Although this project only contains two views the welcome page and the response page , it is easy to see that they contain a lot of duplicated content.