出现org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)的解决方法

（1） mapper接口类和mapper.xml是否在同一个包下，文件名称是否一致（仅后缀不同）：经过实际检验，这个并不需要在同一个包下面，通常mapper.xml文件是存放在src/main/resources目录下，而mapper接口类是在src/main/java目录下面；名称是否相同也不重要，我的命名分贝为NumberDao.java和NumberMapper.xml，实际也可以运行成功 
（2）mapper.xml的namespace是否是对应接口类的全名（包括包名和类名）：这个是必须要保证相同，需要进行检查，而且全类名最好通过复制，不要自己手动拼写，容易出错 
（3）mapper接口类的方法名是否与mapper.xml中sql标签的id相同：这个也需要进行检查，必须保证一致 
（4）mapper.xml文件中用resultMap，而不用resultType（当sql操作结果是List或其他复杂结果集时）：我经过实践检验，我的查询结果是一个Integer的List集合，用resultMap反而报错，异常信息如下：

org.apache.ibatis.builder.IncompleteElementException: Could not find result map java.lang.Integer
at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:346)
at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderA
4000
ssistant.java:290)
at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:109)
at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:788)
at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:758)
at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:753)
at org.apache.ibatis.binding.MapperMethod$SqlCommand.resolveMappedStatement(MapperMethod.java:247)
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:217)
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48)
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)
at com.sun.proxy.$Proxy99.qryLockNumber(Unknown Source)
at org.NumberRecovery.service.RecoveryService.qryLockNumber(RecoveryService.java:23)
at org.NumberRecovery.service.RecoveryService$$FastClassBySpringCGLIB$$dc43da81.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at org.NumberRecovery.service.RecoveryService$$EnhancerBySpringCGLIB$$a9c68bd2.qryLockNumber(<generated>)
at org.NumberRecovery.controller.RecoveryController.updateLockNumber(RecoveryController.java:39)
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.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IllegalArgumentException: Result Maps collection does not contain value for java.lang.Integer
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:888)
at org.apache.ibatis.session.Configuration.getResultMap(Configuration.java:640)
at org.apache.ibatis.builder.MapperBuilderAssistant.getStatementResultMaps(MapperBuilderAssistant.java:344)
... 36 common frames omitted

（5） 到target目录下看是否有mapper.xml文件生成（按照自己对mapper.xml文件的路径配置到target下classes目录下找），如果没有可以在pom.xml文件的

<build></build>

之间添加

<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
</resources>

也可以再在

<resources></resources>

之间再添加一项

<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>

使mapper.xml文件不论是放在

src/main/resources

或

src/main/java

下都可以被打包到classes目录下。