老师我Invalid bound statement (not found) 报错是什么原因

来源：7-3 查询节点和递归查找功能开发

Xn7

2019-08-31

2019-08-31 23:44:14,923 - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.example.demo.dao.TestMapper.insert] with root cause
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.example.demo.dao.TestMapper.insert
at org.apache.ibatis.binding.MapperMethod $S q l C o m m a n d . < i n i t > (M a p p e r M e t h o d . j a v a : 235) a t o r g . a p a c h e . i b a t i s . b i n d i n g . M a p p e r M e t h o d . < i n i t > (M a p p e r M e t h o d . j a v a : 53) a t o r g . a p a c h e . i b a t i s . b i n d i n g . M a p p e r P r o x y . l a m b d a$ cachedMapperMethod $0 (M a p p e r P r o x y . j a v a : 61) a t j a v a . u t i l . c o n c u r r e n t . C o n c u r r e n t H a s h M a p . c o m p u t e I f A b s e n t (C o n c u r r e n t H a s h M a p . j a v a : 1660) a t o r g . a p a c h e . i b a t i s . b i n d i n g . M a p p e r P r o x y . c a c h e d M a p p e r M e t h o d (M a p p e r P r o x y . j a v a : 61) a t o r g . a p a c h e . i b a t i s . b i n d i n g . M a p p e r P r o x y . i n v o k e (M a p p e r P r o x y . j a v a : 56) a t c o m . s u n . p r o x y .$ Proxy59.insert(Unknown Source)
at com.example.demo.controller.portal.IndexController.index(IndexController.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892)