Accounts :: Pricing - WebSketch.
Lolkedijkstra: Creating your first LDX+ project in Eclipse. LDX+ for Java - parsing XML has never been easier. Java - Including external jar-files in a new jar-file build with Ant. PGP. Hashing Java. Introduction This page helps Java developers hash passwords safely. We rely on OWASP's Password Storage Cheat Sheet to explain hashing best practice and theory. Java Example public static byte[] hashPassword( final char[] password, final byte[] salt, final int iterations, final int keyLength ) { try { SecretKeyFactory skf = SecretKeyFactory.getInstance( "PBKDF2WithHmacSHA512" ); PBEKeySpec spec = new PBEKeySpec( password, salt, iterations, keyLength ); SecretKey key = skf.generateSecret( spec ); byte[] res = key.getEncoded( ); return res; } catch( NoSuchAlgorithmException | InvalidKeySpecException e ) { throw new RuntimeException( e ); } } Guidance The password and salt arguments are arrays, as is the result of the hashPassword function.
Sensitive data should be cleared after you have used it (set the array elements to zero). The example uses a Password Based Key Derivation Function 2 (PBKDF2), as discussed in the Password Storage Cheat Sheet. A keyLength of 256 is safe. Reference. Encryption - An example of encrypting an xml file in Java using bouncy castle. Comment lines by Doug Phillips: The best ideas are the simple ones. When basic is best I've always thought if you make something simple enough that everyone can use it, then everyone will. This is becoming more and more apparent as we try to find innovative ways to make our lives easier with technology. In my line of work, I have responsibilities that range from application architecture design to detailed specification design to actual application development. I try to look at everything I do from a point of simplicity. To provide a robust and adequate design, some people think you have to build a complex diagram of integrated systems and multiple layers of sophisticated interlocking components or it just doesn't make sense.
Application and system architects today have a broad base of knowledge from Internet and intranet infrastructure designs to multi-layered redundant hardware and software backends. Of course, there are places where it makes sense to apply these technologies; banking and Internet commerce are great examples. Back to top. Developing Applications : Developing an Eclipse plug-in from start to finish. ShowTable of Contents Introduction In this article we develop an Eclipse plug-in starting from an idea and finishing with deployment. Plug-in development consists of developing the code by the "rules" of Eclipse, and so we have the obligation and privilege to use features available in the Eclipse platform.
First the plug-in idea is described, including where it came from and a vision or what it should and should not be. Then we go through the development process by developing the plug-in, using Eclipse features and manual coding when necessary. After writing the plug-in code, we create an Eclipse Feature that holds our plug-in and gives us a means to create an update site. In this way, we can install the plug-in from an update site, either locally or remotely from a Web server. Overview of the plug-in The plug-in idea is simple: list today's and yesterday's email messages in your Lotus Notes inbox in an Eclipse view. A plug-in should be simple to develop and simple to use, in that order.
Integrating JSF and JPA. MVC architecture has become the default choice for developing web applications. It has become a tradition to develop web applications using multi-tier architecture and hence involving one or more Frameworks. A Framework ensures faster development cycle and guarantees the usage of proven design patterns and architecture. There are various Frameworks available for each layer; be it presentation tier, business tier or persistence tier.
The architects can decide upon the choice of the frameworks for different tier based on the requirement. This article is to demonstrate how to integrate the presentation tier using JSF with the persistence tier using JPA. Are two popular frameworks used to develop Java EE applications. Introduction to Java Server Faces Request Processing Lifecycle phases in JSF Accessing Web Services from JSF applications Navigation model in JSF In this article, a scenario of generating report on employee details is considered and has been explained with the corresponding code. Spring MVC 3 Showcase. Since the big Spring 3 release last year, I've been working on a number of application development projects and extracting "showcases" of various framework features. These "showcases" are not reference applications or tutorials, they're more like acceptance tests for specific framework capabilities. After seeing a showcase, you should have a good idea of what the technology can do.
The first showcase I've put together is for Spring MVC 3, our web framework. It includes a sample project, along with a supporting slide presentation and screencast. After digging in, you should have a good understanding of what Spring MVC can do and get a feel for how easy it is to use. mvc-showcase In this showcase you'll see the following in action: The simplest possible @ControllerMapping RequestsObtaining Request DataGenerating ResponsesMessage ConvertersRendering ViewsType ConversionValidationFormsFile UploadException Handling Get the code by cloning the spring-mvc-showcase project over at Github.
Summary. Spring MVC Framework Tutorial. Spring MVC helps in building flexible and loosely coupled web applications. The Model-view-controller design pattern helps in seperating the business logic, presentation logic and navigation logic. Models are responsible for encapsulating the application data. The Views render response to the user with the help of the model object . Controllers are responsible for receiving the request from the user and calling the back-end services. The figure below shows the flow of request in the Spring MVC Framework.
When a request is sent to the Spring MVC Framework the following sequence of events happen. The DispatcherServlet first receives the request. To understand the Spring MVC Framework we will now create a simple hello world example using the Eclipse IDE. Go to File -> New -> Dynamic Web Project, to create a web project. Enter the project name and click the Finish button. Create a new package com.vaannila inside the src directory. Copy the following code inside the HelloWorldController class. Mastering Spring MVC. Model-View-Controller Web frameworks for Java are plentiful, and most of them integrate with Spring, but the tightest integration can be found in Spring's own MVC module. Get started with Spring MVC in this introductory article by Steven Haines, who begins with a history of the Model-View-Controller paradigm in Java Web development. He then introduces the Spring Framework and explains how it leverages the concepts of Spring, including dependency injection.
Finally, Steven guides you through a programming tutorial that demonstrates the core features of Spring MVC in an easy-to-follow, hands-on format. Level: Beginner In the ongoing evolution of Java EE technologies, the Spring Framework has emerged as a top choice for the middle, or business tier of enterprise application development. Spring's lightweight paradigm for developing enterprise applications has won it a large following that today rivals that of the standard Java EE platform. The MVC framework landscape Spring: An overview. Spring MVC Development – Quick Tutorial. This is a short tutorial on Developing web applications with Spring from Manoj at “The Khangaonkar Report”, one of our JCG partners. (NOTE: The original post has been slightly edited to improve readability) Spring MVC enables easy web application development with a framework based on the Model View Controller architecture (MVC) pattern.
The MVC architectural pattern requires the separation of the user interface (View), the data being processed (Model) and the Controller which manages the interactions between the view and the model. At the core of Spring MVC is a servlet, the DispatcherServlet, that handles every request. The DispatcherServlet routes the HTTP request to a Controller class authored by the application developer. The controller class handles the request and decides which view should be displayed to the user as part of the response.
Let us develop a simple web application that takes a request and sends some data back to the user. For this tutorial you will also need: 1. Green Beans: Getting Started with Spring MVC. Spring MVC, a part of the core Spring Framework, is a mature and capable action-response style web framework, with a wide range of capabilities and options aimed at handling a variety of UI-focused and non-UI-focused web tier use cases. All this can potentially be overwhelming to the Spring MVC neophyte. I think it’s useful for this audience to show just how little work there is to get a bare Spring MVC application up and running (i.e. consider my example something akin to the world’s simplest Spring MVC application), and that’s what I’ll spend the rest of this article demonstrating.
I’m assuming you are familiar with Java, Spring (basic dependency injection concepts), and the basic Servlet programming model, but do not know Spring MVC. After reading this blog entry, readers may continue learning about Spring MVC by looking at Keith Donald’s Spring MVC 3 Showcase, or the variety of other online and print resources available that cover Spring and Spring MVC. WEB-INF/web.xml```xml <? <! <? ..::CLAM::.. C++ Library for Audio and Music.