spring integrated mybatis mapped file location wrong

java.lang.ClassNotFoundException: org.springframework.web.context.support.ServletRequestHandledEvent
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1643)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1488)
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:119)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1048)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:996)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4741)
at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5062)
at org.apache.catalina.core.StandardContext $3.call(StandardContext.java:5057) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor $Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$ Worker.run (the ThreadPoolExecutor .java: 908)
AT java.lang.Thread.run (Thread.java:662)

where mapping file location was wrong, forgot to add the suffix .xml

just fine.