FAQ（14）：Could not find result map com.smbms.entities.User

mybatis的实体类与mapper.xml文件是对应映射关系的，因此由其要注意标签sql的属性要配置正确哦！！

org.apache.ibatis.builder.IncompleteElementException: Could not find result map com.smbms.entities.Userat org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:346)at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:278)at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:109)at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:760)at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:730)at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:725)at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:210)at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:59)at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)at com.sun.proxy.$Proxy4.UserByUsername(Unknown Source)at com.smbms.entities.UserTest.test03(UserTest.java:69)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$2.evaluate(ParentRunner.java:268)at org.junit.runners.ParentRunner.run(ParentRunner.java:363)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)Caused by: java.lang.IllegalArgumentException: Result Maps collection does not contain value for com.smbms.entities.Userat org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:860)at org.apache.ibatis.session.Configuration.getResultMap(Configuration.java:612)at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:344)... 34 more

解决：粗心大意！
原：使用select<>标签时，不注意resultType 和 resultMap的区别，快捷键的害处！！

<select id="UserByUsername" resultMap="com.smbms.entities.User" parameterType="string">select * from smbms_user where username like CONCAT('%',#{username},'%')</select>

改：

<select id="UserByUsername" resultType="com.smbms.entities.User" parameterType="string">select * from smbms_user where username like CONCAT('%',#{username},'%')</select>