错误原因： 没有发现Mybatis配置文件的路径 解决方法：
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检查Mapper包名与xml文件<mapper>标签的namespace数据名称是否相同
<mapper namespace="com.tuyrk._161_java_socket.project6.dao.FileMapper"></mapper> -
Mapper中定义的方法未在xml文件中配置
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Mapper中方法返回值是List ,而select元素没有正确配置resultMap标签,或者只配置resultType属性
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Mapper的XML文件配置路径是否正确
1mybatis: 2 mapper-locations: classpath*:mybatis/*.xml -
Mapper接口名与Mybatis的xml配置文件名一定要一模一样。（其他同学有这个问题，但是我故意改成不一样也能正常运行）
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如果确认没有以上问题,请任意修改下对应的xml文件,比如删除一个空行,保存.问题解决
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.tuyrk._161_java_socket.project6.dao.FileMapper.save
1at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227) 2at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:49) 3at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65) 4at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) 5at com.sun.proxy.$Proxy55.save(Unknown Source) 6at com.tuyrk._161_java_socket.project6.service.impl.FileServiceImpl.saveFile(FileServiceImpl.java:23) 7at com.tuyrk._161_java_socket.project6.service.impl.FileServiceImplTest.saveFile(FileServiceImplTest.java:18) 8at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 9at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 10at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 11at java.lang.reflect.Method.invoke(Method.java:498) 12at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) 13at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) 14at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) 15at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) 16at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74) 17at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84) 18at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75) 19at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) 20at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) 21at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) 22at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) 23at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) 24at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) 25at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) 26at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) 27at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) 28at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) 29at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) 30at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) 31at org.junit.runners.ParentRunner.run(ParentRunner.java:363) 32at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) 33at org.junit.runner.JUnitCore.run(JUnitCore.java:137) 34at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) 35at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) 36at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) 37at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)