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Tag Archives: Spring

HOW-TO: Get started quickly with Spring 4.0 to build a simple REST-Like API (walkthrough)

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HOW-TO: Get started quickly with Spring 4.0 to build a simple REST-Like API (walkthrough) Yet another tutorial about creating Web API with Spring MVC. Not really sophisticated. Just a walkthrough. The resulting app will serve simple API, will use Mongo as its persistence and it will be secured with Spring Security. Getting started – POM Of course, I am still ...

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Spring REST: Exception handling vol. 3

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It’s a last article from the series about Spring REST exception handling. Finally this time I will talk about handling of REST exceptions which can occur during a form processing. So in this tutorial you will see everything related to REST, forms and exception handling. What about client side? JQuery will be used to reflect all responses of the REST ...

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Spring REST: Exception handling vol. 2

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This is a second article from the series about REST Exception handling with Spring. In my previous post I have described how to organise the most simple exception handling in a REST service. This time I will go further and I will show you when you’d better to use exception handling on a @ControllerAdvice level. INTRO Before I will start ...

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Spring Data MongoDB cascade save on DBRef objects

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Spring Data MongoDB by default does not support cascade operations on referenced objects with @DBRef annotations as reference says: The mapping framework does not handle cascading saves. If you change an Account object that is referenced by a Person object, you must save the Account object separately. Calling save on the Person object will not automatically save the Account objects ...

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Add Apache Camel and Spring as jboss modules in WildFly

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These days I am playing with Wildfly and Apache Camel and Spring. A simple way to communicate between EARs / WARs is using direct-vm component of Camel. There are many ways to achieve this with or without Camel. Camel works like a charm in WildFly without any need for extra configurations. Camel is great!!! In order to avoid pack all ...

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Auditing Entities in Spring Data MongoDB

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Spring Data MongoDB 1.2.0 silently introduced new feature: support for basic auditing. Because you will not find too much about it in official reference in this post I will show what benefits does it bring, how to configure Spring for auditing and how to annotate your documents to make them auditable Auditing let you declaratively tell Spring to store: date ...

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Spring Security – Behind the scenes

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Security tasks such as authentication of user and authorization of a user to view application resources are usually handled by the application server. These tasks can be delegated to Spring security flow relieving application server from handling these tasks. Spring security basically handles these tasks by implementing standard javax.servlet.Filter. For initializing Spring security into your application, you need to declare ...

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Getting started with Spring Data Solr

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Spring Data Solr is an extension to the Spring Data project which aims to simplify the usage of Apache Solr in Spring applications. Please note that this is not an introduction into Spring (Data) or Solr. I assume you have at least some basic understanding of both technologies. Within the following post I will show how you can use Spring ...

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HOW-TO: Custom error pages in Tomcat with Spring MVC

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Default Tomcat error pages look scary. In addition, they may expose valuable information including server version and exception stack trace. Servlet specification provides a way to configure an exceptional behavior through web.xml. One can configure either reaction on a specific Java exception or to a selected Http response code(s). error-page element specifies a mapping between an error code or exception ...

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Strategy Pattern ain’t meant for Spring!

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Right, so lets say you’re writing a Spring MVC app and you decide, “I want to do seperate encapsulated algorithms that can be swapped to carry out a specific behaviour”. The classic response to this would be “you need the Strategy Pattern ma’ boy!”.  So, that’s what I did, consider the code below… Interface     public interface MealStrategy { ...

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