以前沒用maven的時候啥都很好，但是現在專案使用了maven，我也就把專案轉換成了maven的方式。

專案中的mybatis使用的是mapper代理的方式進行開發，專案未遷移之前可以正常執行，但是遷移之後就一直報一個錯誤，

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.dsr.oa.mapper.UserMapper.selectByPrimaryKey
	org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:189)
	org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:43)
	org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:58)
	org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:51)
	com.sun.proxy.$Proxy12.selectByPrimaryKey(Unknown Source)
	com.dsr.oa.service.impl.UserServiceImpl.selectByPrimaryKey(UserServiceImpl.java:34)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
	org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
	org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
	org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
	org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
	org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
	com.sun.proxy.$Proxy15.selectByPrimaryKey(Unknown Source)
	com.dsr.oa.controller.UserController.selectByPrimaryKey(UserController.java:21)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	java.lang.reflect.Method.invoke(Method.java:606)
	org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)
	org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
	org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

剛開始我以為是我在遷移的過程中不小心改了程式碼，但是經過一遍遍的程式碼走讀，按照mapper代理的風格要求查了好幾遍卻沒有發現任何錯誤，後來開啟taget目錄看了一下
發現了問題，

我的UserMapper.xml檔案竟然沒有，這就是問題所在。maven的java程式碼資料夾中預設不編譯.xml檔案，也就是說你的專案釋出之後

java資料夾中的.xml檔案根本就不釋出，解決方案如下

在你的pom.xml檔案的<build></build>標籤中新增如下程式碼

<build>
    <finalName>oassm</finalName>
 
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
                <include>**/*.tld</include>
 
            </includes>
            <filtering>true</filtering>
        </resource>
    </resources>
</build>