026-06-05 10:35:14 -   题目1(9d05c475-b4fe-4679-a450-ee88a94b3b34): correct=true, score=2.0/2.0, feedback=正确！
2026-06-05 10:35:14 - ========== 批阅成功 ==========
2026-06-05 10:35:14 - 批阅结果: totalScore=2.0, totalMaxScore=2.0, scoreRate=100.0%
2026-06-05 10:35:14 - 开始批量保存答题记录: count=1
Creating a new SqlSession
Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae]
JDBC Connection [HikariProxyConnection@1655372871 wrapping com.mysql.cj.jdbc.ConnectionImpl@79affd3a] will be managed by Spring
==>  Preparing: SELECT id,user_id,question_id,question_type,answer_type,paper_id,session_id,user_answer,score,max_score,is_correct,grading_type,feedback,time_spent,paper_time_spent,created_at,updated_at FROM user_answer WHERE (user_id = ? AND question_id = ? AND paper_id = ? AND answer_type = ?)
==> Parameters: 1(Long), 9d05c475-b4fe-4679-a450-ee88a94b3b34(String), 371d3303-be8c-4c5c-ba93-3c4a34c52e9c(String), practice(String)
<==      Total: 0
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae]
Fetched SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae] from current transaction
==>  Preparing: INSERT INTO user_answer ( user_id, question_id, question_type, answer_type, paper_id, session_id, user_answer, score, max_score, is_correct, grading_type, feedback, created_at, updated_at ) VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ? )
==> Parameters: 1(Long), 9d05c475-b4fe-4679-a450-ee88a94b3b34(String), single_choice(String), practice(String), 371d3303-be8c-4c5c-ba93-3c4a34c52e9c(String), grade_74bf2bf3(String), "C"(String), 2.0(BigDecimal), 2.0(BigDecimal), 1(Integer), ai(String), 正确！(String), 2026-06-05T10:35:14.742885600(LocalDateTime), 2026-06-05T10:35:14.742901216(LocalDateTime)
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae]
Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae]
Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@ede1ae]
2026-06-05 10:35:15 - ========== 批改答案发生未知异常 ==========
2026-06-05 10:35:15 - 错误类型: org.springframework.dao.DataIntegrityViolationException
2026-06-05 10:35:15 - 错误信息: 
### Error updating database.  Cause: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
### The error may exist in top/tqx/demo_1/mapper/UserAnswerMapper.java (best guess)
### The error may involve top.tqx.demo_1.mapper.UserAnswerMapper.insert-Inline
### The error occurred while setting parameters
### SQL: INSERT INTO user_answer  ( user_id, question_id, question_type, answer_type, paper_id, session_id, user_answer, score, max_score, is_correct, grading_type, feedback,   created_at, updated_at )  VALUES (  ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,   ?, ?  )
### Cause: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
; Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
2026-06-05 10:35:15 - 可能的错误位置:
2026-06-05 10:35:15 -   at top.tqx.demo_1.service.impl.UserAnswerServiceImpl.batchSaveAnswers:UserAnswerServiceImpl.java (行号: 98)
2026-06-05 10:35:15 -   at top.tqx.demo_1.service.impl.UserAnswerServiceImpl$$SpringCGLIB$$0.batchSaveAnswers:<generated> (行号: -1)
2026-06-05 10:35:15 -   at top.tqx.demo_1.controller.ExamController.saveUserAnswers:ExamController.java (行号: 583)
2026-06-05 10:35:15 -   at top.tqx.demo_1.controller.ExamController.gradeAnswers:ExamController.java (行号: 416)
2026-06-05 10:35:15 -   at top.tqx.demo_1.aspect.LogAspect.around:LogAspect.java (行号: 43)
2026-06-05 10:35:15 -   at top.tqx.demo_1.controller.ExamController$$SpringCGLIB$$0.gradeAnswers:<generated> (行号: -1)
2026-06-05 10:35:15 - 完整堆栈: 
org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
### The error may exist in top/tqx/demo_1/mapper/UserAnswerMapper.java (best guess)
### The error may involve top.tqx.demo_1.mapper.UserAnswerMapper.insert-Inline
### The error occurred while setting parameters
### SQL: INSERT INTO user_answer  ( user_id, question_id, question_type, answer_type, paper_id, session_id, user_answer, score, max_score, is_correct, grading_type, feedback,   created_at, updated_at )  VALUES (  ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,   ?, ?  )
### Cause: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
; Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:258)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:107)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:92)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:439)
	at jdk.proxy2/jdk.proxy2.$Proxy87.insert(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:272)
	at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:59)
	at com.baomidou.mybatisplus.core.override.MybatisMapperProxy$PlainMethodInvoker.invoke(MybatisMapperProxy.java:152)
	at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:89)
	at jdk.proxy2/jdk.proxy2.$Proxy107.insert(Unknown Source)
	at top.tqx.demo_1.service.impl.UserAnswerServiceImpl.batchSaveAnswers(UserAnswerServiceImpl.java:98)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768)
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:392)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:720)
	at top.tqx.demo_1.service.impl.UserAnswerServiceImpl$$SpringCGLIB$$0.batchSaveAnswers(<generated>)
	at top.tqx.demo_1.controller.ExamController.saveUserAnswers(ExamController.java:583)
	at top.tqx.demo_1.controller.ExamController.gradeAnswers(ExamController.java:416)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:354)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768)
	at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:89)
	at top.tqx.demo_1.aspect.LogAspect.around(LogAspect.java:43)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:637)
	at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:627)
	at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:71)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:768)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:720)
	at top.tqx.demo_1.controller.ExamController$$SpringCGLIB$$0.gradeAnswers(<generated>)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:255)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:188)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:118)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:926)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:831)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:590)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:175)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:150)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1736)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`knowledge_management_system`.`user_answer`, CONSTRAINT `fk_user_answer_question` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`) ON DELETE CASCADE ON UPDATE RESTRICT)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:118)
	at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:912)
	at com.mysql.cj.jdbc.ClientPreparedStatement.execute(ClientPreparedStatement.java:354)
	at com.zaxxer.hikari.pool.ProxyPreparedStatement.execute(ProxyPreparedStatement.java:44)
	at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.execute(HikariProxyPreparedStatement.java)
	at jdk.internal.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:58)
	at jdk.proxy3/jdk.proxy3.$Proxy164.execute(Unknown Source)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:48)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:75)
	at jdk.internal.reflect.GeneratedMethodAccessor84.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:61)
	at jdk.proxy2/jdk.proxy2.$Proxy162.update(Unknown Source)
	at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50)
	at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)
	at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)
	at jdk.internal.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
	at com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor.intercept(MybatisPlusInterceptor.java:106)
	at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:59)
	at jdk.proxy2/jdk.proxy2.$Proxy161.update(Unknown Source)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:197)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:184)
	at jdk.internal.reflect.GeneratedMethodAccessor145.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:425)
	... 102 common frames omitted
2026-06-05 10:35:15 - 响应 | 耗时: 852ms