org.apache.ibatis.binding.BindingException: Invalid bound statement (not found):

原本在Eclipse中好好的maven项目，导入idea中，服务器启动正常,但在调用userMapper接口时，报以下异常：

或者自己学习开发中遇到

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.beauxie.wxj.dao.UserMapper.findUserByCondition

也就是说没有找到对应的配置id

贡献两种解决办法！ 下面?

解决办法① （核对ssm配置文件）

解决办法② (配置pom.xml配置文件 注意:maven项目)

下面先看一下错误信息：

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.beauxie.wxj.dao.UserMapper.findUserByCondition
  at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:178)
  at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:38)
  at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:49)
  at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:42)
  at com.sun.proxy.$Proxy10.findUserByCondition(Unknown Source)
  at com.beauxie.wxj.service.impl.UserServiceImpl.validata(UserServiceImpl.java:61)
  at com.beauxie.wxj.service.impl.UserServiceImpl.validataUsername(UserServiceImpl.java:35)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
  at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
  at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
  at com.sun.proxy.$Proxy13.validataUsername(Unknown Source)
  at com.beauxie.wxj.controller.UserController.checkUsername(UserController.java:83)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:606)
  at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
  at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
  at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
  at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
  at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
  at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
  at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
  at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
  at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
  at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
  at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
  at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
  at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
  at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
  at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
  at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
  at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
  at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
  at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
  at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
  at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
  at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
  at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
  at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
  at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
  at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:315)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
  at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.beauxie.wxj.dao.UserMapper.findUserByCondition
  at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:775)
  at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:615)
  at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:608)
  at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:176)
  ... 60 more

一、解决办法① （核对ssm配置文件）

1、自己认真核对mapper接口方法名和mpper配置文件中的id是否完全一致

2、mapper接口类名与配置文件名完全一致

3、保证mapper接口和配置文件处在同一包下，这样配置映射:

附上代码:

<!-- mapper扫描器-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 扫描包路径-->
        <property name="basePackage" value="com.oracle.shop.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>

在一切配置文件都正常的情况出现这样的错误

二、解决办法② (配置pom.xml配置文件 注意:maven项目)

情况是这样的idea的加载字节码文件的时候是默认不加载xml src/main/java包资源下配置文件的，也就是说你打开target会发现mapper包下居然没有xml配置文件！我**明明配置了啊

像这样:源代码文件

target目录下:

iead的大坑 我***

最后百度了一下解决办法 就是在pom.xml文件中让idea编译的时候加载到target配置文件

附上代码:

<!--解决Intellij构建项目时，target/classes目录下不存在mapper.xml文件-->
        <resources>
            <resource>
                <directory>${basedir}/src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>