在跑大佬微服例程时，运行microservice-provider，出现以下报错
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.wshy.example.dao.UserDao.getUsers
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) ~[javax.servlet-api-3.1.0.jar:3.1.0]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1650) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:206) ~[websocket-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1637) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) ~[jetty-security-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:190) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) ~[jetty-servlet-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.Server.handle(Server.java:561) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:334) ~[jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) [jetty-server-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279) [jetty-io-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:104) [jetty-io-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124) [jetty-io-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:243) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:679) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:597) [jetty-util-9.4.7.v20170914.jar:9.4.7.v20170914]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_171]
Caused by: org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.wshy.example.dao.UserDao.getUsers
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:225) ~[mybatis-3.4.4.jar:3.4.4]
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:48) ~[mybatis-3.4.4.jar:3.4.4]
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65) ~[mybatis-3.4.4.jar:3.4.4]
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) ~[mybatis-3.4.4.jar:3.4.4]
at com.sun.proxy.$Proxy76.getUsers(Unknown Source) ~[na:na]
at com.wshy.example.serviceimpl.UserServiceimpl.getUsers(UserServiceimpl.java:36) ~[classes/:na]
at com.wshy.example.controller.UserController.getUsers(UserController.java:36) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133) ~[spring-web-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.13.RELEASE.jar:4.3.13.RELEASE]
... 48 common frames omitted原因：未找到报错： com.wshy.example.dao.UserDao.getUsers，检查usermapper.xml配置，
由于跑的例程，直接复制过来的usermapper.xml文件，忘记修改namepance，所以是namespace配置错误，导致无法读取userdao
来源：CSDN
作者：wshy0924
链接：https://blog.csdn.net/weixin_40550118/article/details/104013941