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Tag: outofmemoryerror

Large JSON responses with Jackson

Published on February 1, 2025

Jackson is the standard Object to JSON mapping library for Java. It converts POJOs to JSON strings and it parses JSON strings to populate POJOs. It sits behind many JSON based REST servers in Java including Spring MVC. For basic use cases it is very simple to use. Indeed, with Spring Boot it is completely transparent – the framework leverages Jackson to do Object to JSON mapping for you. It’s feature rich and extensible so it can usually handle more complex use cases too. One such use case is returning large JSON responses with Jackson.

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Integration Tests with Selenium and tomcat7-maven-plugin

Published on January 18, 2013

Integration tests are a valuable tool in the development of robust, quality software. Once each individual component has been unit tested, the integration test gives some confidence that the system stack as a whole does what is expected. Like unit tests, a great deal of the value of integration tests comes from the regression suite that they create. After any defect fix or enhancement to software, the unit and integration tests confirm that all existing features do exactly what they did before. If these tests are automated, they cost nothing to run and they’ll stay silent unless a defect is discovered.

I’ve looked at unit testing a few times in the past but this post explains how to integration test the full stack – database, Java application and web server. In this case, I’m running the tests as part of the Maven build lifecycle. As usual, I’m working from the Spanners demo (available for download), mainly working against the spanners-struts web component.

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