There is no getter for property named 'user' in 'class com.example.demo.model.User'
今天做项目时遇到一个问题弄了半天才弄好：
springboot启动后报错：
org.apache.ibatis.reflection.ReflectionException: There is no getter for property named ‘user’ in ‘class com.example.demo.model.User’
at org.apache.ibatis.reflection.Reflector.getGetInvoker(Reflector.java:395) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.MetaClass.getGetInvoker(MetaClass.java:163) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.wrapper.BeanWrapper.getBeanProperty(BeanWrapper.java:162) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.wrapper.BeanWrapper.get(BeanWrapper.java:49) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.MetaObject.getValue(MetaObject.java:122) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.MetaObject.metaObjectForProperty(MetaObject.java:145) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.reflection.MetaObject.getValue(MetaObject.java:115) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:79) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.statement.PreparedStatementHandler.parameterize(PreparedStatementHandler.java:94) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.statement.RoutingStatementHandler.parameterize(RoutingStatementHandler.java:64) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:87) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:49) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:197) ~[mybatis-3.5.1.jar:3.5.1]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_192]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_192]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_192]
at org.mybatis.spring.SqlSessionTemplate S q l S e s s i o n I n t e r c e p t o r . i n v o k e ( S q l S e s s i o n T e m p l a t e . j a v a : 433 ) [ m y b a t i s − s p r i n g − 2.0.1. j a r : 2.0.1 ] a t c o m . s u n . p r o x y . SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ~[mybatis-spring-2.0.1.jar:2.0.1] at com.sun.proxy. SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) [mybatis−spring−2.0.1.jar:2.0.1]atcom.sun.proxy.Proxy61.update(Unknown Source) ~[na:na]
at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:294) ~[mybatis-spring-2.0.1.jar:2.0.1]
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:67) ~[mybatis-3.5.1.jar:3.5.1]
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58) ~[mybatis-3.5.1.jar:3.5.1]
at com.sun.proxy. P r o x y 64. s a v e U s e r b y U s e r ( U n k n o w n S o u r c e ) [ n a : n a ] a t c o m . e x a m p l e . d e m o . s e r v i c e . i m p . U s e r s e r v i c e I m p . s a v a U s e r b y U s e r ( U s e r s e r v i c e I m p . j a v a : 47 ) [ c l a s s e s / : n a ] a t c o m . e x a m p l e . d e m o . c o n t r o l l e r . U s e r C o n t r o l l e r . u p d a t a i n f o r m a t i o n ( U s e r C o n t r o l l e r . j a v a : 64 ) [ c l a s s e s / : n a ] a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e 0 ( N a t i v e M e t h o d ) [ n a : 1.8. 0 1 92 ] a t s u n . r e f l e c t . N a t i v e M e t h o d A c c e s s o r I m p l . i n v o k e ( N a t i v e M e t h o d A c c e s s o r I m p l . j a v a : 62 ) [ n a : 1.8. 0 1 92 ] a t s u n . r e f l e c t . D e l e g a t i n g M e t h o d A c c e s s o r I m p l . i n v o k e ( D e l e g a t i n g M e t h o d A c c e s s o r I m p l . j a v a : 43 ) [ n a : 1.8. 0 1 92 ] a t j a v a . l a n g . r e f l e c t . M e t h o d . i n v o k e ( M e t h o d . j a v a : 498 ) [ n a : 1.8. 0 1 92 ] a t o r g . s p r i n g f r a m e w o r k . w e b . m e t h o d . s u p p o r t . I n v o c a b l e H a n d l e r M e t h o d . d o I n v o k e ( I n v o c a b l e H a n d l e r M e t h o d . j a v a : 190 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . m e t h o d . s u p p o r t . I n v o c a b l e H a n d l e r M e t h o d . i n v o k e F o r R e q u e s t ( I n v o c a b l e H a n d l e r M e t h o d . j a v a : 138 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . m v c . m e t h o d . a n n o t a t i o n . S e r v l e t I n v o c a b l e H a n d l e r M e t h o d . i n v o k e A n d H a n d l e ( S e r v l e t I n v o c a b l e H a n d l e r M e t h o d . j a v a : 104 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . m v c . m e t h o d . a n n o t a t i o n . R e q u e s t M a p p i n g H a n d l e r A d a p t e r . i n v o k e H a n d l e r M e t h o d ( R e q u e s t M a p p i n g H a n d l e r A d a p t e r . j a v a : 892 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . m v c . m e t h o d . a n n o t a t i o n . R e q u e s t M a p p i n g H a n d l e r A d a p t e r . h a n d l e I n t e r n a l ( R e q u e s t M a p p i n g H a n d l e r A d a p t e r . j a v a : 797 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . m v c . m e t h o d . A b s t r a c t H a n d l e r M e t h o d A d a p t e r . h a n d l e ( A b s t r a c t H a n d l e r M e t h o d A d a p t e r . j a v a : 87 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . D i s p a t c h e r S e r v l e t . d o D i s p a t c h ( D i s p a t c h e r S e r v l e t . j a v a : 1039 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . D i s p a t c h e r S e r v l e t . d o S e r v i c e ( D i s p a t c h e r S e r v l e t . j a v a : 942 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . F r a m e w o r k S e r v l e t . p r o c e s s R e q u e s t ( F r a m e w o r k S e r v l e t . j a v a : 1005 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . F r a m e w o r k S e r v l e t . d o P o s t ( F r a m e w o r k S e r v l e t . j a v a : 908 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t j a v a x . s e r v l e t . h t t p . H t t p S e r v l e t . s e r v i c e ( H t t p S e r v l e t . j a v a : 660 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . s p r i n g f r a m e w o r k . w e b . s e r v l e t . F r a m e w o r k S e r v l e t . s e r v i c e ( F r a m e w o r k S e r v l e t . j a v a : 882 ) [ s p r i n g − w e b m v c − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t j a v a x . s e r v l e t . h t t p . H t t p S e r v l e t . s e r v i c e ( H t t p S e r v l e t . j a v a : 741 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 231 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . t o m c a t . w e b s o c k e t . s e r v e r . W s F i l t e r . d o F i l t e r ( W s F i l t e r . j a v a : 53 ) [ t o m c a t − e m b e d − w e b s o c k e t − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 193 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . R e q u e s t C o n t e x t F i l t e r . d o F i l t e r I n t e r n a l ( R e q u e s t C o n t e x t F i l t e r . j a v a : 99 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . O n c e P e r R e q u e s t F i l t e r . d o F i l t e r ( O n c e P e r R e q u e s t F i l t e r . j a v a : 109 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 193 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . F o r m C o n t e n t F i l t e r . d o F i l t e r I n t e r n a l ( F o r m C o n t e n t F i l t e r . j a v a : 92 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . O n c e P e r R e q u e s t F i l t e r . d o F i l t e r ( O n c e P e r R e q u e s t F i l t e r . j a v a : 109 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 193 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . H i d d e n H t t p M e t h o d F i l t e r . d o F i l t e r I n t e r n a l ( H i d d e n H t t p M e t h o d F i l t e r . j a v a : 93 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . O n c e P e r R e q u e s t F i l t e r . d o F i l t e r ( O n c e P e r R e q u e s t F i l t e r . j a v a : 109 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 193 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . C h a r a c t e r E n c o d i n g F i l t e r . d o F i l t e r I n t e r n a l ( C h a r a c t e r E n c o d i n g F i l t e r . j a v a : 200 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . w e b . f i l t e r . O n c e P e r R e q u e s t F i l t e r . d o F i l t e r ( O n c e P e r R e q u e s t F i l t e r . j a v a : 109 ) [ s p r i n g − w e b − 5.1.8. R E L E A S E . j a r : 5.1.8. R E L E A S E ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . i n t e r n a l D o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 193 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . A p p l i c a t i o n F i l t e r C h a i n . d o F i l t e r ( A p p l i c a t i o n F i l t e r C h a i n . j a v a : 166 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . S t a n d a r d W r a p p e r V a l v e . i n v o k e ( S t a n d a r d W r a p p e r V a l v e . j a v a : 202 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . S t a n d a r d C o n t e x t V a l v e . i n v o k e ( S t a n d a r d C o n t e x t V a l v e . j a v a : 96 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . a u t h e n t i c a t o r . A u t h e n t i c a t o r B a s e . i n v o k e ( A u t h e n t i c a t o r B a s e . j a v a : 490 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . S t a n d a r d H o s t V a l v e . i n v o k e ( S t a n d a r d H o s t V a l v e . j a v a : 139 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . v a l v e s . E r r o r R e p o r t V a l v e . i n v o k e ( E r r o r R e p o r t V a l v e . j a v a : 92 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o r e . S t a n d a r d E n g i n e V a l v e . i n v o k e ( S t a n d a r d E n g i n e V a l v e . j a v a : 74 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c a t a l i n a . c o n n e c t o r . C o y o t e A d a p t e r . s e r v i c e ( C o y o t e A d a p t e r . j a v a : 343 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c o y o t e . h t t p 11. H t t p 11 P r o c e s s o r . s e r v i c e ( H t t p 11 P r o c e s s o r . j a v a : 408 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c o y o t e . A b s t r a c t P r o c e s s o r L i g h t . p r o c e s s ( A b s t r a c t P r o c e s s o r L i g h t . j a v a : 66 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . c o y o t e . A b s t r a c t P r o t o c o l Proxy64.saveUserbyUser(Unknown Source) ~[na:na] at com.example.demo.service.imp.UserserviceImp.savaUserbyUser(UserserviceImp.java:47) ~[classes/:na] at com.example.demo.controller.UserController.updatainformation(UserController.java:64) ~[classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_192] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_192] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_192] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_192] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.8.RELEASE.jar:5.1.8.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) ~[spring-web-5.1.8.RELEASE.jar:5.1.8.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.coyote.AbstractProtocol Proxy64.saveUserbyUser(UnknownSource) [na:na]atcom.example.demo.service.imp.UserserviceImp.savaUserbyUser(UserserviceImp.java:47) [classes/:na]atcom.example.demo.controller.UserController.updatainformation(UserController.java:64) [classes/:na]atsun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethod) [na:1.8.0192]atsun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [na:1.8.0192]atsun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [na:1.8.0192]atjava.lang.reflect.Method.invoke(Method.java:498) [na:1.8.0192]atorg.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atjavax.servlet.http.HttpServlet.service(HttpServlet.java:660) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) [spring−webmvc−5.1.8.RELEASE.jar:5.1.8.RELEASE]atjavax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat−embed−websocket−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:109) [spring−web−5.1.8.RELEASE.jar:5.1.8.RELEASE]atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.coyote.AbstractProtocolConnectionHandler.process(AbstractProtocol.java:853) [tomcat-embed-core-9.0.21.jar:9.0.21]
at org.apache.tomcat.util.net.NioEndpoint S o c k e t P r o c e s s o r . d o R u n ( N i o E n d p o i n t . j a v a : 1587 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t o r g . a p a c h e . t o m c a t . u t i l . n e t . S o c k e t P r o c e s s o r B a s e . r u n ( S o c k e t P r o c e s s o r B a s e . j a v a : 49 ) [ t o m c a t − e m b e d − c o r e − 9.0.21. j a r : 9.0.21 ] a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r ( T h r e a d P o o l E x e c u t o r . j a v a : 1149 ) [ n a : 1.8. 0 1 92 ] a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r SocketProcessor.doRun(NioEndpoint.java:1587) [tomcat-embed-core-9.0.21.jar:9.0.21] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.21.jar:9.0.21] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_192] at java.util.concurrent.ThreadPoolExecutor SocketProcessor.doRun(NioEndpoint.java:1587)[tomcat−embed−core−9.0.21.jar:9.0.21]atorg.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)[tomcat−embed−core−9.0.21.jar:9.0.21]atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)[na:1.8.0192]atjava.util.concurrent.ThreadPoolExecutorWorker.run(ThreadPoolExecutor.java:624) [na:1.8.0_192]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.21.jar:9.0.21]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_192]
错误的关键信息：org.apache.ibatis.reflection.ReflectionException: There is no getter for property named ‘user’ in ‘class com.example.demo.model.User’
第一种可能：实体类中没有写get和set函数
经过检查排除第一种可能，在分析知道映射中没有属性名为user的对象
我的dao层实现对数据库的一条记录进行修改。mybatis会自动识别user对象的值，传到xml文件中，所以需要给对象指定映射。在userDao方法中给user对象添加上@Param注解
修改前：@Update(“update user t set t.username=#{user.username},t.password=#{user.password},t.url=#{user.url},t.image=#{user.image},t.image=#{user.sex},t.telephone=#{user.telephone} where t.id=#{user.id}”)
int saveUserbyUser(User user);
修改后： @Update(“update user t set t.username=#{user.username},t.password=#{user.password},t.url=#{user.url},t.image=#{user.image},t.image=#{user.sex},t.telephone=#{user.telephone} where t.id=#{user.id}”)
int saveUserbyUser(@Param(“user”) User user);