运行一个简单mybatis maven项目测试用例报错

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.zzy.mapper.UserMapper.selectUser

  at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:235)
  at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:53)
  at org.apache.ibatis.binding.MapperProxy.lambda$cachedMapperMethod$0(MapperProxy.java:61)
  at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1660)
  at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:61)
  at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:56)
  at com.sun.proxy.$Proxy2.selectUser(Unknown Source)
  at Mytest.test(Mytest.java:25)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:498)
  at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
  at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
  at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
  at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
  at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
  at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
  at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
  at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
  at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
  at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
  at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
  at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
  at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
  at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
  at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
  at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
  at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found):..._java
尝试了各种网上的办法都不靠谱。最终我是这么解决
修改mybatis-config.xml

<mappers>
        <mapper class="com.zzy.mapper.UserMapper"/>

    </mappers>

改成这个

<mappers>
        <mapper resource="com/zzy/mapper/Mapper.xml"/>
    </mappers>

重新运行测试用例，通过
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found):..._apache_02