有关mybatis的Invalid bound statement (not found)的解决办法

第二天学习springmvc和mybatis整合，写demo花了5个小时（主要自己扣配置文件，总忘，不熟悉）。然后再编写完demo后，出现了两个问题，一个是找不到路径。估计是我的web.xml配置出错，在加载全局环境变量的时候，同时加载了springmvc的主配置文件，今天就不重现错误了，优点类。

在第一个bug莫名其妙修复后，发现了第二个bug。错误信息是：

严重: Servlet.service() for servlet [springmvc] in context with path [] threw exception [Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.zhaochen.dao.ItemsDao.findAll] with root cause

org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.zhaochen.dao.ItemsDao.findAll

at org.apache.ibatis.binding.MapperMethod$SqlCommand.(MapperMethod.java:189)

at org.apache.ibatis.binding.MapperMethod.(MapperMethod.java:43)

at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:58)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:51)

at com.sun.proxy.$Proxy17.findAll(Unknown Source)

at com.zhaochen.service.ItemsServiceImpl.findAllItems(ItemsServiceImpl.java:26)

at com.zhaochen.controller.ItemsController.itemsList(ItemsController.java:21)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.__invoke(DelegatingMethodAccessorImpl.java:43)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

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:218)

at org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:122)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

大概的解释就是itemsDao.java找不到相应的itemsDao.xml，无法完成绑定。

度娘了很久，找到的都是maven出现的错误，maven在加载文件的时候没有将mapper.xml同时加载进去，出现了找不到Mapper.xml的问题，解决办法是

https://www.oschina.net/question/1435792_229508

然后发现自己的错误跟其完全不符合，特么的就开始吓调，改了很多配置文件中的属性，各种删除修改，都不好使。最后快放弃的时候，发现，麻痹，是javabean和xml配置文件名称不一致导致的。。。。。。我觉得这阵子学的垃圾，完全学不进去，导致精神根本不集中，这点问题都找不到。。。。

够了，最后放一个链接，关于Invalid bound statement (not found)的解决办法，xml和接口匹配不到的时候的解决办法，估计好使。。。

http://blog.csdn.net/softwarehe/article/details/8889206

回家，睡觉！