Can find imported Spring beans from JAR, but not from WAR - spring

Question

My application consists of three Maven projects (I am omitting other modules)): FrameworkBase (JAR), FrameworkBaseImpl (JAR), FrameworkRestService (WAR).
FrameworkRestService is a plugin to FrameworkBaseImpl, drawing its class/interface definitions
from FrameworkBase, which FrameworkBaseImpl implements/extends. (I had to split FrameworkBase to avoid Maven curcular dependencies).
FrameworkBaseImpl has a main, which invokes Jetty, passing the FrameworkRestService war.
I am trying to have Spring inject a RestService instance as a field member in the (sole) instance of FrameworkMain class of FrameworkBaseImpl. My Spring points to FrameworkRestService class inside FrameworkRestService project as implementing the restService bean.
And here is the problem: Although Spring seems to find the imported framework_rest_service.context file in the WAR that contains the bean it fails injecting it (no bean named restService is found). But if I convert FrameworkRestService into a JAR - it magically succeeds! I am stuck for 2 days on it! Please help!
FrameworkBase pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>framework.base</artifactId>
<packaging>jar</packaging>
<name>framework.base</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<parent>
<groupId>controlapps</groupId>
<artifactId>controlapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../controlapp/pom.xml</relativePath>
</parent>
</project>
FrameworkBase RestService:
package com.company.controlapps.framework.base;
public class RestService {
public FrameworkMain frameworkMain;
/* Setters for Spring */
public void setFrameworkMain(FrameworkMain frameworkMain)
{this.frameworkMain = frameworkMain;}
}
FrameworkBase FrameworkMain:
package com.company.controlapps.framework.base;
public interface FrameworkMain {
...
}
FrameworkBaseImpl pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>framework.base.impl</artifactId>
<packaging>jar</packaging>
<name>framework.base.impl</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<parent>
<groupId>controlapps</groupId>
<artifactId>controlapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../controlapp/pom.xml</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>controlapps</groupId>
<artifactId>framework.base</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>controlapps</groupId>
<artifactId>framework.restservice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<scope>runtime</scope>
<type>war</type>
</dependency>
</dependencies>
</project>
FrameworkBaseImpl FrameworkMainImpl:
package com.company.controlapps.framework.base.impl;
public class FrameworkMainImpl implements FrameworkMain {
....
protected RestService restService;
public void setRestService(RestService restService)
{this.restService = restService;}
}
public static void main(String[] args) {
context = new ClassPathXmlApplicationContext(SPRING_CONTEXT_FILENAME);
FrameworkMainImpl frameworkMain = (FrameworkMainImpl) context.getBean("frameworkMain");
...
}
FrameworkBaseImpl spring context.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<import resource="classpath*:framework_restservice_context.xml"/>
<bean id="frameworkMain" class="com.company.controlapps.framework.base.impl.FrameworkMainImpl" >
<property name="restService" ref="restService" />
</bean>
</beans>
FrameworkRestService FrameworkRestService pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>framework.restservice</artifactId>
<packaging>war</packaging>
<name>framework.restservice</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jersey.version>1.12</jersey.version>
</properties>
<parent>
<groupId>controlapps</groupId>
<artifactId>controlapp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../controlapp/pom.xml</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>controlapps</groupId>
<artifactId>framework.base</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-server-linking</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-spring</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.5.4</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
</dependencies>
</project>
FrameworkRestService spring framework_restservice_context.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="restService" class="com.radware.controlapps.framework.restservice.FrameworkRestService">
<property name="frameworkMain" ref="frameworkMain" />
</bean>
</beans>
FrameworkRestService FrameworkRestService.java snippet:
package com.company.controlapps.framework.restservice;
#Path("myresource")
public class FrameworkRestService extends RestService {
...
#Context
UriInfo uriInfo;
#Context
Request request;
#GET
#Produces(MediaType.APPLICATION_JSON)
public MyResource getMyResource() {
...
frameworkMain.doSomething();
....
}
Sorry for the long question. :-)

Answer 1

It wasn't a class loader issue. I had the WAR and the JAR use the same class loader (of the JAR). Somebody commented that I shouldn't have tried to link a WAR and look for beans in there.
So instead of trying to solve the problem I simply bypassed it by canceling Spring dependencies between the JAR and the WAR. In the WAR I still needed a reference to the FrameworkMain singleton instantiated in the JAR.
I "hacked" this as follows: I added a class named Holder with public static methods get and set the FrameworkMain instance singleton. I call get from the WAR, and set from the jar. I could not add this to FrameworkMain, which is actually an interface in FrameworkBase jar (implemented by FrameworkMainImpl in the FrameworkBaseImpl jar).
Thanks.