spring mvc

Common code in Spring MVC, where to put it?

During my journey coding an actuator for a non-Spring Boot application, I came upon an interesting problem regarding where to actually put a snippet of common code. This post tries to list all available options, and their respective pros and cons in a specific context. As a concrete example, let’s use the REST endpoint returning the map of all JVM properties accessible through the /jvmprops sub-context. Furthermore, I wanted to offer the option to search not only for a single property e.

JavaEE

Fully configurable mappings for Spring MVC

As I wrote some weeks earlier, I’m trying to implement features of the Spring Boot actuator in a non-Boot Spring MVC applications. Developing the endpoints themselves is quite straightforward. Much more challenging, however, is to be able to configure the mapping in a properties file, like in the actuator. This got me to check more closely at how it was done in the current code. This post sums up my 'reverse-engineering' attempt around the subject.

Java

Metrics, metrics everywhere

With DevOps, metrics are starting to be among the non-functional requirements any application has to bring into scope. Before going further, there are several comments I’d like to make: Metrics are not only about non-functional stuff. Many metrics represent very important KPI for the business. For example, for an e-commerce shop, the business needs to know how many customers leave the checkout process, and in which screen.

JavaEE

Sanitizing webapp outputs as an an afterthought

For sure, software security should be part of every developer’s requirements: they should be explained and detailed before development. Unfortunately, it happens in real life that this is not always the case. Alternatively, even when it is, developers make mistakes and/or have to make with tight (read impossible) plannings. In the absence of security checks automated tools, sooner or later, an issue will appear.

JavaEE

Chaining URL View resolvers in Spring MVC

Standard Java EE forward to internal resources offers no decoupling between the servlet code and the view technology, even without the JSP location. Spring MVC introduces the notion of ViewResolver. The controller just handles logical names, mapping between the logical name and the actual resource is handled by the ViewResolver.

JavaEE

Spring 3.2 sweetness

Even the most extreme Spring opponents have to admit it is all about making developers life easier. Version 3.2 of Spring MVC brings even more sweetness to the table. Sweetness #1: No web.xml The ability to run a webapp without any web deployment descriptor comes from Servlet 3.0. One option would be to annotate your servlet with the @WebServlet annotation to set mapping and complementary data.