搭建SSM小demo,运行的时候页面显示如下500错误：

HTTP状态 500 - 内部服务器错误

类型 异常报告

消息 Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.kuang.dao.BookMapper.queryAllBook

描述 服务器遇到一个意外的情况，阻止它完成请求。

例外情况

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.kuang.dao.BookMapper.queryAllBook

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1013)

org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)

javax.servlet.http.HttpServlet.service(HttpServlet.java:626)

org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)

javax.servlet.http.HttpServlet.service(HttpServlet.java:7