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copied!<p>For the general problem of finding which JAR(s) contain which classes and their associated dependencies, you can try <a href="http://www.jarvana.com/jarvana/" rel="nofollow noreferrer">http://www.jarvana.com/jarvana/</a>. It takes a class name as input and spits out a bunch of Maven dependencies you can use to get said class.</p> <p>For Spring in particular, I believe you'll have to refer to its documentation. If you have IDE support for Maven, you can typically simply fill in the spring groupId (org.springframework) and activate autocompletion inside <code><artifactId></artifactId></code> to see which JARs are available. The main sections in the Spring docs tend to have their own separate jars.</p> <p>As I'm sure you've seen, another good indicator that you'll need a separate JAR are the XML namespaces used in your applicationContext.xml file. For example, here's an XML root node from a project using aop, tx and beans:</p> <pre><code><?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd" default-autowire="byName"> </code></pre> <p>The example above would imply that you need the spring-beans, spring-aop and spring-tx JARs (Spring's JAR naming is fairly consistent). I'm not sure if the above is always true, but it should at least give you an indication.</p>

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