英文:
How much data can spring jdbc session hold
问题
我决定使用Spring JDBC会话来保存已登录用户的信息。'User'实体包括类型为'String'的'photo'字段。实际上，我将用户的个人资料图片以Base64编码的字符串形式存储在数据库中。用户信息可以无问题地存储在数据库中。Spring JDBC会话可以保存包括20kb大小照片在内的用户信息。但是当一个大小为52kb的带有照片的用户尝试登录时，会出现错误：
出现了意外错误（类型=内部服务器错误，状态=500）。
PreparedStatementCallback；SQL [INSERT INTO SPRING_SESSION_ATTRIBUTES（SESSION_PRIMARY_ID，ATTRIBUTE_NAME，ATTRIBUTE_BYTES）SELECT PRIMARY_ID，？，？FROM SPRING_SESSION WHERE SESSION_ID =？]；数据截断：行1处的'ATTRIBUTE_BYTES'列数据过长；嵌套异常是com.mysql.cj.jdbc.exceptions.MysqlDataTruncation：数据截断：行1处的'ATTRIBUTE_BYTES'列数据过长
org.springframework.dao.DataIntegrityViolationException：PreparedStatementCallback；SQL [INSERT INTO SPRING_SESSION_ATTRIBUTES（SESSION_PRIMARY_ID，ATTRIBUTE_NAME，ATTRIBUTE_BYTES）SELECT PRIMARY_ID，？，？FROM SPRING_SESSION WHERE SESSION_ID =？]；数据截断：行1处的'ATTRIBUTE_BYTES'列数据过长；嵌套异常是com.mysql.cj.jdbc.exceptions.MysqlDataTruncation：数据截断：行1处的'ATTRIBUTE_BYTES'列数据过长
在org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate（SQLStateSQLExceptionTranslator.java:104）处
在org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate（AbstractFallbackSQLExceptionTranslator.java:72）处
在org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate（AbstractFallbackSQLExceptionTranslator.java:81）处
在org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate（AbstractFallbackSQLExceptionTranslator.java:81）处
在org.springframework.jdbc.core.JdbcTemplate.translateException（JdbcTemplate.java:1443）处
在org.springframework.jdbc.core.JdbcTemplate.execute（JdbcTemplate.java:633）处
在org.springframework.jdbc.core.JdbcTemplate.update（JdbcTemplate.java:862）处
在org.springframework.jdbc.core.JdbcTemplate.update（JdbcTemplate.java:917）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository.insertSessionAttributes（JdbcIndexedSessionRepository.java:483）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository.access$1300（JdbcIndexedSessionRepository.java:130）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.lambda$save$10（JdbcIndexedSessionRepository.java:817）处
在org.springframework.transaction.support.TransactionOperations.lambda$executeWithoutResult$0（TransactionOperations.java:68）处
在org.springframework.transaction.support.TransactionTemplate.execute（TransactionTemplate.java:140）处
在org.springframework.transaction.support.TransactionOperations.executeWithoutResult（TransactionOperations.java:67）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.save（JdbcIndexedSessionRepository.java:799）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.access$200（JdbcIndexedSessionRepository.java:631）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository.save（JdbcIndexedSessionRepository.java:409）处
在org.springframework.session.jdbc.JdbcIndexedSessionRepository.save（JdbcIndexedSessionRepository.java:130）处
在org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.commitSession（SessionRepositoryFilter.java:225）处
在org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.access$100（SessionRepositoryFilter.java:192）处
在org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal（SessionRepositoryFilter.java:144）处
在org.springframework.session.web.http.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:82）处
在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）处
在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）处
在org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal（CharacterEncodingFilter.java:201）处
在org.springframework.web.filter.OncePerRequestFilter.doFilter（OncePerRequestFilter.java:119）处
在org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:193）处
在org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）处
在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:202）处
在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:96）处
在org.apache.catalina.authenticator.AuthenticatorBase.invoke（AuthenticatorBase.java:541）处
在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:139）处
在org.apache.catalina.valves.ErrorReportValve.invoke（ErrorReportValve.java:92）处
在org.apache.catalina.core.StandardEngineValve.invoke（StandardEngineValve.java:74）处
在org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter.java:343）处
在org.apache.coyote.http11.Http11Processor.service（Http11Processor.java:367）处
在org.apache.coyote.AbstractProcessorLight.process（AbstractProcessorLight.java:65）处
在org.apache.coyote.AbstractProtocol$ConnectionHandler.process（AbstractProtocol.java:868）处
在org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun（NioEndpoint.java:1639）处
在org.apache.tomcat.util.net.SocketProcessorBase.run（SocketProcessorBase.java:49）处
在java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1149）处
在java.util.concurrent.ThreadPoolExecutor$Worker.run（ThreadPoolExecutor.java:624）处
在org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run（TaskThread.java:61）处
在java.lang.Thread.run（Thread.java:748）处
由于com.mysql.cj.jdbc.exceptions.MysqlDataTruncation引起：数据截断：行1处的'ATTRIBUTE_BYTES'列数据过长
在com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException（SQLExceptionsMapping.java:104）处
在com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal（ClientPreparedStatement.java:953）处
在com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal（ClientPreparedStatement.java:1092）处
在com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal（ClientPreparedStatement.java:1040）处
在com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate（ClientPreparedStatement.java:1347）处
在com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate（ClientPreparedStatement.java:1025）处
在com.z
<details>
<summary>英文:</summary>
I decided to use Spring JDBC Session for holding logged user information. The 'User' entity includes 'photo' field of type 'String'. Actually, I am storing user profile pictures in database as Base64 encoded String. User information are stored in the database without any problem. Spring JDBC session could hold user information including a photo of 20kb size. But when a user with photo of 52kb size wants to login, it gives an error-
There was an unexpected error (type=Internal Server Error, status=500).
PreparedStatementCallback; SQL [INSERT INTO SPRING_SESSION_ATTRIBUTES(SESSION_PRIMARY_ID, ATTRIBUTE_NAME, ATTRIBUTE_BYTES) SELECT PRIMARY_ID, ?, ? FROM SPRING_SESSION WHERE SESSION_ID = ?]; Data truncation: Data too long for column 'ATTRIBUTE_BYTES' at row 1; nested exception is com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Data too long for column 'ATTRIBUTE_BYTES' at row 1
org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL [INSERT INTO SPRING_SESSION_ATTRIBUTES(SESSION_PRIMARY_ID, ATTRIBUTE_NAME, ATTRIBUTE_BYTES) SELECT PRIMARY_ID, ?, ? FROM SPRING_SESSION WHERE SESSION_ID = ?]; Data truncation: Data too long for column 'ATTRIBUTE_BYTES' at row 1; nested exception is com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Data too long for column 'ATTRIBUTE_BYTES' at row 1
at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:104)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81)
at org.springframework.jdbc.core.JdbcTemplate.translateException(JdbcTemplate.java:1443)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:862)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:917)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository.insertSessionAttributes(JdbcIndexedSessionRepository.java:483)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository.access$1300(JdbcIndexedSessionRepository.java:130)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.lambda$save$10(JdbcIndexedSessionRepository.java:817)
at org.springframework.transaction.support.TransactionOperations.lambda$executeWithoutResult$0(TransactionOperations.java:68)
at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
at org.springframework.transaction.support.TransactionOperations.executeWithoutResult(TransactionOperations.java:67)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.save(JdbcIndexedSessionRepository.java:799)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository$JdbcSession.access$200(JdbcIndexedSessionRepository.java:631)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository.save(JdbcIndexedSessionRepository.java:409)
at org.springframework.session.jdbc.JdbcIndexedSessionRepository.save(JdbcIndexedSessionRepository.java:130)
at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.commitSession(SessionRepositoryFilter.java:225)
at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.access$100(SessionRepositoryFilter.java:192)
at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:144)
at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:82)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1639)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Data too long for column 'ATTRIBUTE_BYTES' at row 1
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:104)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1040)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1347)
at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate(ClientPreparedStatement.java:1025)
at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
at org.springframework.jdbc.core.JdbcTemplate.lambda$update$0(JdbcTemplate.java:867)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)
... 38 more
</details>
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