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copied!<p>Of course you can't store hardcoded credentials in your web app.</p> <p>So you must store them outside, on the server on which you deploy.</p> <p>Outside of specific container features like datasources, you may :</p> <p>1) use java Preferences, but there are so many bugs with them, especially if using tomcat on linux, that I wouldn't consider them (I did, I cleaned)</p> <p>2) Put the connection properties in external files. Here's how I do it :</p> <p>I have in my WEB-INF directory a text file listing all authorized locations for those proprerties. This file is deployed as is on all servers. Here's an example :</p> <pre><code># This file lists all the locations where mysoft will look for # an XML config file when starting. # It's recommended to use links to simplify parameterization but # it's also possible to enrich this file. # standard windows locations c:\mycomp\mysoft\config\config.xml d:\mycomp\mysoft\config\config.xml # standard linux location /var/lib/mycomp/mysoft/config/config.xml </code></pre> <p>And my webapp simply chooses the first found file when initializing. To do this I implemented a ServletContextListener in which I read the text file and store the config.</p> <p>Here's a very simplified version of my listener :</p> <pre><code>public class MySoftServletContextListener implements ServletContextListener { public final static String CONFIG_LIST_PATH = "/WEB-INF/config-paths.txt"; @Override public void contextInitialized(ServletContextEvent contextEvent) { InputStream list = context.getResourceAsStream(WORLD_LIST_PATH); try { BufferedReader listReader = new BufferedReader(new InputStreamReader(list)); String line; while ((line=listReader.readLine())!=null) { if (line.length()<4 || line.charAt(0)=='#') continue; File file = new File(line); if (file.exists()) { // log config from the file and, for example, store it in a singleton break; } else { log.info("No config in file " + line + " (file doesn't exist)"); } } list.close(); } catch (IOException e) { e.printStackTrace(); log.severe("Error while looking for a config : " + e.toString()); } } } </code></pre> <p>The servlet context listener is referenced in my web.xml like this :</p> <pre><code><listener> <listener-class>com.mycomp.mysoft.webapp.MySoftServletContextListener</listener-class> </listener> </code></pre>

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