FAQ（10）：Type interface com.smbms.dao.UserMapper is not known to the MapperRegistry.

mybatis的mapper.xml文件有错！！

Log：

org.apache.ibatis.binding.BindingException: Type interface com.smbms.dao.UserMapper is not known to the MapperRegistry.
	at org.apache.ibatis.binding.MapperRegistry.getMapper(MapperRegistry.java:47)
	at org.apache.ibatis.session.Configuration.getMapper(Configuration.java:717)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:292)
	at com.smbms.entities.UserTest.test01(UserTest.java:32)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	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:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

解决：
mapper的命名空间没填写完整！！（namespace漏了com.smbms.dao.）
原：

 <mapper namespace="UserMapper">
	<select id="UsershowById" resultType="com.smbms.entities.User">
		select id,userCode,userName,userPassword,gender,birthday,phone,address,userRole,createdBy,creationDate,modifyBy,modifyDate from employee where id = #{id}
	</select>
	
	<select id="Usershow" resultType="com.smbms.entities.User">
		select * from employee 
	</select>
	
 </mapper>

改：

 <mapper namespace="com.smbms.dao.UserMapper">
	<select id="UsershowById" resultType="com.smbms.entities.User">
		select id,userCode,userName,userPassword,gender,birthday,phone,address,userRole,createdBy,creationDate,modifyBy,modifyDate from employee where id = #{id}
	</select>
	
	<select id="Usershow" resultType="com.smbms.entities.User">
		select * from employee 
	</select>
	
 </mapper>