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POHandling of configuration files in Spring web applications
 

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    <p>I have several times ran into the same problem, and I would like to have some input on what other people think about the issue: Suppose we have Spring application packaged as a <strong>.war</strong> file and we want to run it on <strong>several environments</strong>. (development/test/preprod/prod/etc)</p> <p>For accessing the infrastructure needed by the application, (databases/webservices etc) we store the access info in configuration files, also some business configuration is in those files. Let's say we use <strong>.properties</strong> files for this purpose (because we have a spring application inside the war and we like having the properties read by a one-liner in the appcontext) and also suppose that in the different environments we don't have the same appserver/servlet container. (eg: dev, test: jetty, preprod: tomcat, prod: glassfish)</p> <p>What I usually have done is creating multiple <strong>Maven profiles</strong>, one for each environment, the needed configuration in the appropriate files for each. </p> <p>Now recently I have faced a question from a guy running operations: 'So really we have to generate a new build with the appropriate profile on the buildserver if the DB is changed in preprod environment?' I answered 'No, you can actually go to .../webapps/currentApp/WEB-INF/classes/config/application.properties and change the values there, then restart the container'</p> <p>We have come up with a solution which solves some aspects of this issue: using Maven assembly plugin we embed a Jetty <em>inside</em> the war which makes it usable as an 'executable' war, also giving us the possibility to have a global configuration XML, from which the starter of the embedded Jetty creates/modifies the appropriate .properties files in the exploded war directory and only then starts the application.</p> <p>But again this doesn't solve the issue if you want to use anything else other than Jetty.</p> <p>How is everyone dealing with the same situation?</p>
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