Java mybatis lombok实例化类时出错
我试图使用mybatis连接本地mysql数据库，使用lombok连接POJO对象，但出现了“错误实例化类”错误。我在谷歌上搜索了一些结果，似乎我需要为POJO创建构造函数，但我想如果我使用lombok，我必须这样做吗 Admin.java 包com.cooldrinker.mybatis.model 进口龙目造船厂； 导入龙目数据Java mybatis lombok实例化类时出错,java,mysql,mybatis,lombok,Java,Mysql,Mybatis,Lombok,我试图使用mybatis连接本地mysql数据库，使用lombok连接POJO对象，但出现了“错误实例化类”错误。我在谷歌上搜索了一些结果，似乎我需要为POJO创建构造函数，但我想如果我使用lombok，我必须这样做吗 Admin.java 包com.cooldrinker.mybatis.model 进口龙目造船厂； 导入龙目数据 @Builder @Data public class Admin { private String firstName; private Stri
@Builder
@Data
public class Admin {
private String firstName;
private String lastName;
private String password;
private String userName;
}
type Exception report
message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.cooldrinker.mybatis.model.Admin with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.cooldrinker.mybatis.model.Admin.<init>()
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.cooldrinker.mybatis.model.Admin with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.cooldrinker.mybatis.model.Admin.<init>()
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.cooldrinker.mybatis.model.Admin with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.cooldrinker.mybatis.model.Admin.<init>()
org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:365)
com.sun.proxy.$Proxy147.selectOne(Unknown Source)
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)
org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95)
org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
com.sun.proxy.$Proxy149.getAdminByUsername(Unknown Source)
com.cooldrinker.mybatis.dao.impl.AdminDaoImpl.getAdminByUsername(AdminDaoImpl.java:24)
com.cooldrinker.dataservice.service.impl.AdminServiceImpl.getAdminByUsername(AdminServiceImpl.java:26)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
com.sun.proxy.$Proxy153.getAdminByUsername(Unknown Source)
com.cooldrinker.controller.AdminLoginController.login(AdminLoginController.java:39)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.cooldrinker.mybatis.model.Admin with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.cooldrinker.mybatis.model.Admin.<init>()
org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:83)
org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:45)
org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:38)
org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:376)
org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:355)
org.apache.ibatis.executor.resultset.FastResultSetHandler.getRowValue(FastResultSetHandler.java:255)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleRowValues(FastResultSetHandler.java:214)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSet(FastResultSetHandler.java:186)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSets(FastResultSetHandler.java:152)
org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:57)
org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:70)
org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:57)
org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141)
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:105)
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:101)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:95)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:59)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:355)
com.sun.proxy.$Proxy147.selectOne(Unknown Source)
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)
org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95)
org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
com.sun.proxy.$Proxy149.getAdminByUsername(Unknown Source)
com.cooldrinker.mybatis.dao.impl.AdminDaoImpl.getAdminByUsername(AdminDaoImpl.java:24)
com.cooldrinker.dataservice.service.impl.AdminServiceImpl.getAdminByUsername(AdminServiceImpl.java:26)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
com.sun.proxy.$Proxy153.getAdminByUsername(Unknown Source)
com.cooldrinker.controller.AdminLoginController.login(AdminLoginController.java:39)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NoSuchMethodException: com.cooldrinker.mybatis.model.Admin.<init>()
java.lang.Class.getConstructor0(Class.java:2902)
java.lang.Class.getDeclaredConstructor(Class.java:2066)
org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:57)
org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:45)
org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:38)
org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:376)
org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:355)
org.apache.ibatis.executor.resultset.FastResultSetHandler.getRowValue(FastResultSetHandler.java:255)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleRowValues(FastResultSetHandler.java:214)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSet(FastResultSetHandler.java:186)
org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSets(FastResultSetHandler.java:152)
org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:57)
org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:70)
org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:57)
org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141)
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:105)
org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:101)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:95)
org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:59)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:355)
com.sun.proxy.$Proxy147.selectOne(Unknown Source)
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:160)
org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95)
org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
com.sun.proxy.$Proxy149.getAdminByUsername(Unknown Source)
com.cooldrinker.mybatis.dao.impl.AdminDaoImpl.getAdminByUsername(AdminDaoImpl.java:24)
com.cooldrinker.dataservice.service.impl.AdminServiceImpl.getAdminByUsername(AdminServiceImpl.java:26)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
com.sun.proxy.$Proxy153.getAdminByUsername(Unknown Source)
com.cooldrinker.controller.AdminLoginController.login(AdminLoginController.java:39)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:606)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:214)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:690)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
类型异常报告
消息请求处理失败；嵌套异常为org.mybatis.spring.MyBatisSystemException:嵌套异常为org.apache.ibatis.reflection.ReflectionException:使用无效类型（）或值（）实例化类com.cooldrinker.mybatis.model.Admin时出错。原因：java.lang.NoSuchMethodException:com.cooldrinker.mybatis.model.Admin。（）
说明服务器遇到内部错误，无法满足此请求。
例外
org.springframework.web.util.NestedServletException:请求处理失败；嵌套异常为org.mybatis.spring.MyBatisSystemException:嵌套异常为org.apache.ibatis.reflection.ReflectionException:使用无效类型（）或值（）实例化类com.cooldrinker.mybatis.model.Admin时出错。原因：java.lang.NoSuchMethodException:com.cooldrinker.mybatis.model.Admin。（）
org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:973）
org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:863）
javaservlet.http.HttpServlet.service（HttpServlet.java:648）
org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:837）
javaservlet.http.HttpServlet.service（HttpServlet.java:729）
org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）
根本原因
org.mybatis.spring.MyBatisSystemException:嵌套异常为org.apache.ibatis.reflection.ReflectionException:使用无效类型（）或值（）实例化类com.cooldrinker.mybatis.model.Admin时出错。原因：java.lang.NoSuchMethodException:com.cooldrinker.mybatis.model.Admin。（）
org.mybatis.spring.MyBatisExceptionTranslator.translateException如果可能（MyBatisExceptionTranslator.java:73）
org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke（SqlSessionTemplate.java:365）
com.sun.proxy.$Proxy147.selectOne（未知来源）
org.mybatis.spring.SqlSessionTemplate.selectOne（SqlSessionTemplate.java:160）
org.apache.ibatis.binding.MapperMethod.execute（MapperMethod.java:95）
org.apache.ibatis.binding.MapperProxy.invoke（MapperProxy.java:40）
com.sun.proxy.$Proxy149.getAdminByUsername（未知源）
com.cooldrinker.mybatis.dao.impl.AdminDaoImpl.getAdminByUsername（AdminDaoImpl.java:24）
com.cooldrinker.dataservice.service.impl.AdminServiceImpl.getAdminByUsername（AdminServiceImpl.java:26）
sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）
invoke（NativeMethodAccessorImpl.java:57）
sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）
java.lang.reflect.Method.invoke（Method.java:606）
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:317）
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:190）
org.springframework.aop.framework.ReflectiveMethodInvocation.procedue（ReflectiveMethodInvocation.java:157）
org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:110）
org.springframework.aop.framework.ReflectiveMethodInvocation.procement（ReflectiveMethodInvocation.java:179）
org.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:207）
com.sun.proxy.$Proxy153.getAdminByUsername（未知源）
com.cooldrinker.controller.AdminLoginController.login（AdminLoginController.java:39）
sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）
invoke（NativeMethodAccessorImpl.java:57）
sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）
java.lang.reflect.Method.invoke（Method.java:606）
org.springframework.web.method.support.InvocableHandlerMethod.invoke（InvocableHandlerMethod.java:214）
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:132）
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle（ServletInvocableHandlerMethod.java:104）
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod（RequestMappingHandlerAdapter.java:749）
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:690）
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:83）
org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:945）
org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:876）
org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:961）
org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:863）
javaservlet.http.HttpServlet.service（HttpServlet.java:648）
org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:837）
javaservlet.http.HttpServlet.service（HttpServlet.java:729）
org.apache.tomcat.websocket.server.WsFilter.doFilter（WsFilter.java:52）
根本原因
org.apache.ibatis.reflection.ReflectionException:使用无效类型（）或值（）实例化类com.cooldrinker.mybatis.model.Admin时出错。原因：java.lang.NoSuchMethodException:com.cooldrinker.mybatis.model.Admin。（）
org.apache.ibatis.reflection.factory.DefaultObjectFactory.InstanceClass（DefaultObjectFactory.java:8