mapper绑定异常 springframework.web.util.NestedServletException

错误内容： mapper绑定异常
org.springframework.web.util.NestedServletException:
Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): cn.e3mall.mapper.TbItemMapper.selectByPrimaryKey
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:981)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:860)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

解决：这个是因为maven工程下mybatis 没有找到mapper的xml文件
由于mapper接口编译后在同一个目录下没有找到mapper映射文件而出现的。由于maven工程在默认情况下src/main/java目录下的mapper文件是不发布到target目录下的。

在pom文件中添加：
如果不添加此节点mybatis的mapper.xml文件都会被漏掉

<build>    <resources>        <resource>            <directory>src/main/java</directory>            <includes>                <include>**/*.properties</include>                <include>**/*.xml</include>            </includes>            <filtering>false</filtering>        </resource>    </resources></build>