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Tag Archives: Spring

Unit Testing of Spring MVC Controllers: Configuration

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Writing unit tests for Spring MVC controllers has traditionally been both simple and problematic. Although it is pretty simple to write unit tests which invoke controller methods, the problem is that those unit tests are not comprehensive enough. For example, we cannot test controller mappings, validation and exception handling just by invoking the tested controller method. Spring MVC Test solved ...

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Auditing a Spring MVC Webapp with AspectJ. Part 1

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If you’re like me, then you’ll have those kinds of programming days where everything seems to go incredibly well. You write the code and the tests and it just works. And then and there are those other kinds of days, the really bad ones, where you know that everything you’ve written is as right as it can be and the ...

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Spring from the Trenches: Using Environment Specific Cron Expressions with the @Scheduled Annotation

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The @Scheduled annotation offers an easy way to create scheduled tasks in Spring powered applications. We can use it to schedule our tasks by using either periodic scheduling or cron expressions. Although period scheduling can also be useful, the cron expressions give us much more control over the invocation of the scheduled tasks. That is why they are very useful ...

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Spring JTA multiple resource transactions in Tomcat with Atomikos example

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In this tutorial we shall show you how to implement JTA multiple resource transactions in a Tomcat server, using Atomikos Transaction Manager. Atomicos transaction manager provides support for distributed transactions. These are multi-phased transactions, often using multiple databases, that must be committed in a coordinated way. The distributed transactions are described by the XA standard. XA governs how a transaction ...

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Spring MVC Error handling flow

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There are broadly three ways of handling an exception flow using Spring MVC, the objective being to intercept any application exception and present a friendly and informative view back to the user. 1. Using error-page tag in web.xml file: This is a servlet specs driven approach, where the exceptions that bubble up from the application are intercepted based on either ...

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The Biggest Flaw of Spring Web Applications

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The developers who are using Spring Framework in their applications are good to talk about the benefits of dependency injection. Unfortunately, they are not so good to leverage its benefits such as the single responsible principle and separation of concerns in their applications. If we take a look at any Spring powered web application, the odds are that the application ...

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Spring Integration – Robust Splitter Aggregator

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A Robust Splitter Aggregator Design Strategy – Messaging Gateway Adapter Pattern What do we mean by robust? In the context of this article, robustness refers to an ability to manage exception conditions within a flow without immediately returning to the caller. In some processing scenarios n of m responses is good enough to proceed to conclusion. Example processing scenarios that ...

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Simple Spring Memcached – Spring Caching Abstraction and Memcached

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Caching remains the one of the most basic performance enhancing mechanism in any read heavy database application. Spring 3.1 release came up with a cool new feature called Cache Abstraction. Spring Cache Abstraction provides the application developers an easy, transparent and decoupled way to implement any caching solution. Memcached is one of the most popular distributed caching system used across apps. In ...

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Spring MVC: Validator and @InitBinder

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It’s hard to imagine a web-application which doesn’t has some validation logic for an user data. Almost all user’s data has some constraints, e.g. date of birth should consist of day, month, year etc. Spring MVC has its own solution for the data validation, and it’s become available with the help of Validator interface. Usage of Spring MVC Validator A ...

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