There is no getter for property named ' Usename ' in ' Class Cn.itcast.mybatis.pojo.User '

Org.apache.ibatis.exceptions.PersistenceException:
# # # Error updating database. Cause:org.apache.ibatis.reflection.ReflectionException:There is no getter for property named ' Usename ' in ' class CN.ITCA St.mybatis.pojo.User '
# # # The error may involve Defaultparametermap
# # # The error occurred while setting parameters
# # # sql:update tb_user SET user_name =?, Password =?, name =?, age =?, sex =?, Birthday =?, created = Now (), updated = Now () WHERE id =?;
# # # Cause:org.apache.ibatis.reflection.ReflectionException:There is the no getter for property named ' Usename ' in ' class CN. Itcast.mybatis.pojo.User '
At Org.apache.ibatis.exceptions.ExceptionFactory.wrapException (exceptionfactory.java:26)
At Org.apache.ibatis.session.defaults.DefaultSqlSession.update (defaultsqlsession.java:154)
At Org.apache.ibatis.binding.MapperMethod.execute (mappermethod.java:54)
At Org.apache.ibatis.binding.MapperProxy.invoke (mapperproxy.java:52)
At Com.sun.proxy. $Proxy 3.updatedUser (Unknown Source)
At Cn.itcast.mybatis.mapper.UserMapperTest.testUpdatedUser (usermappertest.java:60)
At Sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
At Sun.reflect.NativeMethodAccessorImpl.invoke (nativemethodaccessorimpl.java:57)
At Sun.reflect.DelegatingMethodAccessorImpl.invoke (delegatingmethodaccessorimpl.java:43)
At Java.lang.reflect.Method.invoke (method.java:606)
At Org.junit.runners.model.frameworkmethod$1.runreflectivecall (frameworkmethod.java:45)
At Org.junit.internal.runners.model.ReflectiveCallable.run (reflectivecallable.java:15)
At org.junit.runners.model.FrameworkMethod.invokeExplosively (frameworkmethod.java:42)
At Org.junit.internal.runners.statements.InvokeMethod.evaluate (invokemethod.java:20)
At Org.junit.internal.runners.statements.RunBefores.evaluate (runbefores.java:28)
At Org.junit.runners.ParentRunner.runLeaf (parentrunner.java:263)
At Org.junit.runners.BlockJUnit4ClassRunner.runChild (blockjunit4classrunner.java:68)
At Org.junit.runners.BlockJUnit4ClassRunner.runChild (blockjunit4classrunner.java:47)
At Org.junit.runners.parentrunner$3.run (parentrunner.java:231)
At Org.junit.runners.parentrunner$1.schedule (parentrunner.java:60)
At Org.junit.runners.ParentRunner.runChildren (parentrunner.java:229)
At org.junit.runners.parentrunner.access$000 (parentrunner.java:50)
At Org.junit.runners.parentrunner$2.evaluate (parentrunner.java:222)
At Org.junit.runners.ParentRunner.run (parentrunner.java:300)
At Org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run (junit4testreference.java:86)
At Org.eclipse.jdt.internal.junit.runner.TestExecution.run (testexecution.java:38)
At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:459)
At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests (remotetestrunner.java:678)
At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run (remotetestrunner.java:382)
At Org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main (remotetestrunner.java:192)
Caused By:org.apache.ibatis.reflection.ReflectionException:There is no getter for property named ' Usename ' in ' class CN. Itcast.mybatis.pojo.User '
At Org.apache.ibatis.reflection.Reflector.getGetInvoker (reflector.java:380)
At Org.apache.ibatis.reflection.MetaClass.getGetInvoker (metaclass.java:170)
At Org.apache.ibatis.reflection.wrapper.BeanWrapper.getBeanProperty (beanwrapper.java:152)
At Org.apache.ibatis.reflection.wrapper.BeanWrapper.get (beanwrapper.java:48)
At Org.apache.ibatis.reflection.MetaObject.getValue (metaobject.java:116)
At Org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters (defaultparameterhandler.java:76)
At Org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize (preparedstatementhandler.java:80)
At Org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize (routingstatementhandler.java:61)
At Org.apache.ibatis.executor.SimpleExecutor.prepareStatement (simpleexecutor.java:74)
At Org.apache.ibatis.executor.SimpleExecutor.doUpdate (simpleexecutor.java:47)
At Org.apache.ibatis.executor.BaseExecutor.update (baseexecutor.java:105)
At Org.apache.ibatis.executor.CachingExecutor.update (cachingexecutor.java:71)
At Org.apache.ibatis.session.defaults.DefaultSqlSession.update (defaultsqlsession.java:152)
... More
Username in SQL is written as Usename and entity class properties are not

There is no getter for property named ' Usename ' in ' Class Cn.itcast.mybatis.pojo.User '