Support for OpenJDK

[merlinsson]

Has anybody actually tried to use the session manager with openjdk7/tc7? Currently iam getting the following exception:

org.apache.catalina.LifecycleException: Failed to start component [com.orangefunction.tomcat.redissessions.RedisSessionManager[/uma-server-webapp]] 2019-01-03T16:36:59.904193161Z at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162) 2019-01-03T16:36:59.904200629Z at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5364) 2019-01-03T16:36:59.904207414Z at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 2019-01-03T16:36:59.904214145Z at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:755) 2019-01-03T16:36:59.904235640Z at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:731) 2019-01-03T16:36:59.904243259Z at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717) 2019-01-03T16:36:59.904249868Z at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1125) 2019-01-03T16:36:59.904256527Z at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1867) 2019-01-03T16:36:59.904263145Z at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 2019-01-03T16:36:59.904269705Z at java.util.concurrent.FutureTask.run(FutureTask.java:266) 2019-01-03T16:36:59.904276381Z at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 2019-01-03T16:36:59.904283033Z at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 2019-01-03T16:36:59.904289682Z at java.lang.Thread.run(Thread.java:748) 2019-01-03T16:36:59.904296223Z Caused by: java.lang.NoSuchMethodError: org.apache.catalina.Container.getLoader()Lorg/apache/catalina/Loader; 2019-01-03T16:36:59.904302924Z at com.orangefunction.tomcat.redissessions.RedisSessionManager.initializeSerializer(RedisSessionManager.java:716) 2019-01-03T16:36:59.904309734Z at com.orangefunction.tomcat.redissessions.RedisSessionManager.startInternal(RedisSessionManager.java:295) 2019-01-03T16:36:59.904316494Z at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145) 2019-01-03T16:36:59.904323066Z ... 12 more 2019-01-03T16:36:59.904329573Z