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POAutowiring classes from external jar with Spring
 

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    <p>I'm trying to build a standalone application (not running inside an application server) with Spring and I'm facing the following problem :</p> <p>My standalone application (spring enabled) is depending on another project (bundled as a jar) which contains a lot of services in <code>com.application.service</code> (Annotated with <code>@Service</code>).</p> <p>There is no spring related configuration in the external project and the standalone application context is very simple, it only contains :</p> <p><code>&lt;context:component-scan base-package="com.application" /&gt;</code></p> <p>Here is an example of Class that depends on a service which can't be acquired :</p> <pre><code>@Service public class StandaloneService { @Autowired private SomeService someService; // ... } </code></pre> <p><code>StandaloneService</code> is contained in the standalone application while <code>SomeService</code> is in the external jar.</p> <p>The error :</p> <p><code>Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.application.SomeService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} </code></p> <p>Here is how I'm creating the <code>ApplicationContext</code> and trying to acquire my service :</p> <pre><code>public static void main(String[] args) { AbstractApplicationContext context = new ClassPathXmlApplicationContext(new String[] { "applicationContext.xml" }); BeanFactory factory = (BeanFactory) context; StandaloneService standalone = factory.getBean(StandaloneService.class); } </code></pre> <p>How I'm building the standalone application :</p> <pre><code>&lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-jar-plugin&lt;/artifactId&gt; &lt;version&gt;2.4&lt;/version&gt; &lt;configuration&gt; &lt;archive&gt; &lt;index&gt;true&lt;/index&gt; &lt;manifest&gt; &lt;classpathPrefix&gt;./lib/&lt;/classpathPrefix&gt; &lt;addClasspath&gt;true&lt;/addClasspath&gt; &lt;mainClass&gt;com.application.Main&lt;/mainClass&gt; &lt;/manifest&gt; &lt;/archive&gt; &lt;/configuration&gt; &lt;/plugin&gt; &lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-dependency-plugin&lt;/artifactId&gt; &lt;executions&gt; &lt;execution&gt; &lt;id&gt;copy-dependencies&lt;/id&gt; &lt;phase&gt;package&lt;/phase&gt; &lt;goals&gt; &lt;goal&gt;copy-dependencies&lt;/goal&gt; &lt;/goals&gt; &lt;configuration&gt; &lt;outputDirectory&gt;${project.build.directory}/lib&lt;/outputDirectory&gt; &lt;overWriteReleases&gt;false&lt;/overWriteReleases&gt; &lt;overWriteSnapshots&gt;false&lt;/overWriteSnapshots&gt; &lt;overWriteIfNewer&gt;true&lt;/overWriteIfNewer&gt; &lt;/configuration&gt; &lt;/execution&gt; &lt;/executions&gt; &lt;/plugin&gt; </code></pre> <p>How I'm running it (which leads to the failure) :</p> <p><code>java -jar target/standalone.jar</code></p> <p>What is strange is that if I run it this way it works :</p> <p><code>mvn "-Dexec.args=-classpath %classpath com.application.Main" -Dexec.executable=/usr/lib/jvm/java-7-openjdk/bin/java -Dexec.classpathScope=runtime process-classes org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</code></p> <p>Does anyone could help me figure out why Spring can't see my external services in the first case ?</p> <p><strong>EDIT</strong></p> <p>This is from the pom.xml of the external jar :</p> <pre><code>&lt;plugin&gt; &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; &lt;artifactId&gt;maven-jar-plugin&lt;/artifactId&gt; &lt;version&gt;2.4&lt;/version&gt; &lt;configuration&gt; &lt;archive&gt; &lt;manifest&gt; &lt;addDefaultImplementationEntries&gt;true&lt;/addDefaultImplementationEntries&gt; &lt;addClasspath&gt;true&lt;/addClasspath&gt; &lt;/manifest&gt; &lt;/archive&gt; &lt;/configuration&gt; &lt;/plugin&gt; </code></pre>
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    1. USAlexandre Jacob
    1. USAlexandre Jacob
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    1. COHow do you create the external jar file under target/lib? If you are using eclipse to create the external jar, [here](http://stackoverflow.com/questions/1242656/spring-annotation-based-controllers-not-working-if-it-is-inside-jar-file) and [here](http://stackoverflow.com/questions/4936295/auto-wiring-annotations-in-classes-from-dependent-jars) may help you.
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      1. USShinichi Kai
    2. COI edited my question with the relevant part of the pom.xml used to create the external jar. I added the `<configuration>` part but this is not changing anything to my problem. I'm not using eclipse but netbeans, but I want this to be working out of any IDE's scope.
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      1. USAlexandre Jacob
 

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