is not known to the MapperRegistry

最新推荐文章于 2023-10-18 15:48:58 发布

原创最新推荐文章于 2023-10-18 15:48:58 发布 · 642 阅读

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本文档探讨了在mapper.xml文件中定义的com.UserMapper命名空间与实际类路径不匹配导致的BindingException，提供了解决此类问题的方法和排查步骤。

看下 mapper.xml里面的这个namespace是否是正常的

<mapper namespace="com.UserMapper"> 这个要跟实际的类路径对应

org.apache.ibatis.binding.BindingException: Type interface com.zl.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:779)
   at org.apache.ibatis.session.defaults.DefaultSqlSession.getMapper(DefaultSqlSession.java:291)
   at com.zl.dao.UserDaoTest.test(UserDaoTest.java:18)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.base/java.lang.reflect.Method.invoke(Method.java:566)
   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$2.evaluate(ParentRunner.java:229)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
   at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
   at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
   at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
   at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)
   at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)