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java.lang.IllegalArgumentException: Hook previously registered at java.lang.ApplicationShutdownHooks.add(ApplicationShutdownHooks.java:72)[na:1.7.0_147-icedtea] at java.lang.Runtime.addShutdownHook(Runtime.java:209)[na:1.7.0_147-icedtea] at org.springframework.context.support.AbstractApplicationContext.registerShutdownHook(AbstractApplicationContext.java:961)[org.springframework.context-3.1.1.RELEASE.jar:3.1.1.RELEASE]