contexto a instancia de escuchador de clase org.springframework.web.context.ContextLoaderListener at org.slf4j.LoggerFactory.getSingleton(LoggerFactory.java:230)
at org.slf4j.LoggerFactory.bi
: org/apache/log4j/LogManager$PrivateManager at org.apache.commons.logging.impl.SLF4JLogFactory.getInstance(SLF4JLogFactory.java(ContextLoaderListener.java<