Exception executing batch [java.sql.BatchUpdateException: Batch entry 0 update "m_sys_menu" set "code"='', "component"='/system/user/index.vue', "description"='系统用户', "icon"='', "name"='系统用户', "parentId"=1, "sort"=1, "type"=2, "url"='/system/user', "visible"='TRUE' where "id"=141 was aborted: ERROR: cannot update table "m_sys_menu" because it does not have a replica identity and publishes updates 建议：To enable updating the table, set REPLICA IDENTITY using ALTER TABLE. Call getNextException to see other errors in the batch.], SQL: update "m_sys_menu" set "code"=?, "component"=?, "description"=?, "icon"=?, "name"=?, "parentId"=?, "sort"=?, "type"=?, "url"=?, "visible"=? where "id"=? 2023-06-06 11:17:14,587 WARN [org.hib.eng.jdb.spi.SqlExceptionHelper] (executor-thread-0) SQL Error: 0, SQLState: 55000 2023-06-06 11:17:14,589 ERROR [org.hib.eng.jdb.spi.SqlExceptionHelper] (executor-thread-0) Batch entry 0 update "m_sys_menu" set "code"='', "component"='/system/user/index.vue', "description"='系统用户', "icon"='', "name"='系统用户', "parentId"=1, "sort"=1, "type"=2, "url"='/system/user', "visible"='TRUE' where "id"=141 was aborted: ERROR: cannot update table "m_sys_menu" because it does not have a replica identity and publishes updates

时间: 2023-07-06 13:33:25 浏览: 400
这个错误信息与之前的两个问题非常相似。这个错误信息是由于在执行一个批量更新操作时，更新语句中的第一个条目更新表 "m_sys_menu" 的时候出错了。错误原因是该表没有副本身份并且发布了更新，因此无法进行更新操作。 解决这个问题的方法与之前的两个问题相同，需要为表 "m_sys_menu" 添加副本身份。您可以使用以下命令为该表添加副本身份： ```sql ALTER TABLE m_sys_menu ADD REPLICA IDENTITY USING INDEX <index_name>; ``` 其中，<index_name> 是一个已经存在的索引名称，用于指定唯一标识符。完成这个操作后，就可以对表进行更新操作了。 如果这个方法不能解决问题，您可以调用 getNextException 方法来查看批量更新操作中的其他错误。如果您需要更多帮助，请提供更多的上下文信息，我将尽力帮助您解决问题。
相关问题

[0710/081418.767757] [INFO:main.cc(55)] A/B Update Engine starting [0710/081418.775873] [INFO:boot_control_android.cc(69)] Loaded boot control hidl hal. [0710/081418.844522] [ERROR:update_attempter_android.cc(936)] prefs_->GetInt64(kPrefsPreviousSlot, &previous_slot) failed. [0710/081418.850761] [INFO:update_attempter_android.cc(196)] OTAResult::NOT_ATTEMPTED [0710/081418.883202] [INFO:update_attempter_android.cc(1262)] Scheduling CleanupPreviousUpdateAction. [0710/081418.895190] [INFO:action_processor.cc(51)] ActionProcessor: starting CleanupPreviousUpdateAction [0710/081418.899394] [INFO:cleanup_previous_update_action.cc(149)] Starting/resuming CleanupPreviousUpdateAction [0710/081418.902350] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 1 for WaitBootCompleted [0710/081420.904474] [INFO:cleanup_previous_update_action.cc(112)] Executing task 1 [0710/081420.906355] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 3 for WaitBootCompleted [0710/081422.908519] [INFO:cleanup_previous_update_action.cc(112)] Executing task 3 [0710/081422.910627] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 4 for WaitBootCompleted [0710/081424.915286] [INFO:cleanup_previous_update_action.cc(112)] Executing task 4 [0710/081424.919637] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 5 for WaitBootCompleted [0710/081426.923179] [INFO:cleanup_previous_update_action.cc(112)] Executing task 5 [0710/081426.927580] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 6 for WaitBootCompleted [0710/081428.930648] [INFO:cleanup_previous_update_action.cc(112)] Executing task 6 [0710/081428.936232] [INFO:cleanup_previous_update_action.cc(124)] CleanupPreviousUpdateAction scheduled task ID 7 for WaitBootCompleted [0710/081430.938563] [INFO:cleanup_previous_update_action.cc(112)] Executing task 7 [0710/081430.943791] [INFO:cleanup_previous_update_action.cc(189)] Boot completed, waiting on markBootSuccessful() [0710/081430.947213] [INFO:snapshot.cpp(3766)] EnsureMetadataMounted does nothing in Android mode. [0710/081430.950810] [INFO:snapshot_stats.cpp(37)] Read merge statistics file failed: No such file or directory [0710/081430.965136] [INFO:cleanup_previous_update_action.cc(261)] Waiting for any previous merge request to complete. This can take up to several minutes. [0710/081430.974341] [INFO:snapshot.cpp(1047)] CheckMergeState for snapshots returned: 0 [0710/081430.981751] [INFO:snapshot.cpp(1019)] ProcessUpdateState handling state: 0 [0710/081430.988898] [INFO:cleanup_previous_update_action.cc(297)] Can't find any snapshot to merge. [0710/081430.996749] [INFO:cleanup_previous_update_action.cc(130)] Stopping/suspending/completing CleanupPreviousUpdateAction [0710/081431.002327] [INFO:cleanup_previous_update_action.cc(479)] Not reporting merge stats because state is None [0710/081431.014705] [INFO:cleanup_previous_update_action.cc(130)] Stopping/suspending/completing CleanupPreviousUpdateAction [0710/081431.022443] [INFO:action_processor.cc(116)] ActionProcessor: finished last action CleanupPreviousUpdateAction with code ErrorCode::kSuccess [0710/081431.031005] [INFO:update_attempter_android.cc(570)] Processing Done. [0710/081431.038024] [INFO:update_attempter_android.cc(826)] Clearing update complete marker. [0710/081431.046821] [INFO:update_attempter_android.cc(722)] Terminating cleanup previous update. 什么意思？

这段日志是关于一个名为 "CleanupPreviousUpdateAction" 的操作的记录。根据日志，它是在 Android 系统中执行的，目的是清理之前的更新操作。 具体来说，日志中显示了一系列任务被执行，这些任务被安排在启动完成后执行。任务的目标是等待系统启动完成，并在特定任务执行之前执行清理操作。 但是，在这个日志中，没有找到任何需要合并的快照（snapshot），因此没有进行任何合并操作。 最后，日志显示 "CleanupPreviousUpdateAction" 操作已经完成，并以成功的状态结束。 所以，总的来说，这段日志是关于清理之前更新操作的记录，并且没有进行任何合并操作。

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'nacos_devtest'@'10.6.11.24' (using password: YES) ### The error may exist in file [D:\IdeaProjects\chinaunicom-ruijin-lrc\target\classes\mapper\mysql\video\SysEquipmentInfoMapper.xml] ### The error may involve com.chinaunicom.ruijin.dao.video.ISysEquipmentInfoDao.getAllBuildingAxis ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: Access denied for user 'nacos_devtest'@'10.6.11.24' (using password: YES)什么异常

这是一个 MyBatis 和 Spring 集成时的异常，表示在执行数据库查询操作时出现了错误。根据异常信息，可能是因为 MyBatis 无法获取数据库连接，导致查询操作失败。可能的原因是用户名为 'nacos_devtest' 的用户没有权限从 IP 为 '10.6.11.24' 的客户端连接数据库，或者该用户的密码不正确。要解决这个问题，你需要检查数据库连接的用户名和密码是否正确，并且确认该用户是否被授权连接数据库。另外，还需要检查数据库服务器的防火墙设置，确保允许来自客户端的连接请求。
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根据你提供的信息，这是一个使用Sqoop从MySQL导入数据到Hive的命令。但是，在执行命令时出现了错误。错误信息是“Unknown column 'id' in 'field list'”，意思是在字段列表中找不到名为“id”的列。...

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{ "timestamp": "2023-07-14T11:17:15.188+0000", "status": 500, "error": "Internal Server Error", "message": "\r\n### Error querying database. Cause: java.sql.SQLException: sql injection violation, syntax error: syntax error, error in :'RDER BY province_id LIMIT 1', expect BY, actual BY pos 98, line 3, column 56, token BY : SELECT *\n FROM batch_control_line\n WHERE province_id = ? AND year=? LIMIT ORDER BY province_id LIMIT 1\r\n### The error may exist in mybatis/mapper/BatchControlLineMapper.xml\r\n### The error may involve com.college.collegesystem.dao.BatchControlLineMapper.findBatchControlLineByID\r\n### The error occurred while executing a query\r\n### SQL: SELECT * FROM batch_control_line WHERE province_id = ? AND year=? LIMIT ORDER BY province_id LIMIT 1\r\n### Cause: java.sql.SQLException: sql injection violation, syntax error: syntax error, error in :'RDER BY province_id LIMIT 1', expect BY, actual BY pos 98, line 3, column 56, token BY : SELECT *\n FROM batch_control_line\n WHERE province_id = ? AND year=? LIMIT ORDER BY province_id LIMIT 1\n; uncategorized SQLException; SQL state [null]; error code [0]; sql injection violation, syntax error: syntax error, error in :'RDER BY province_id LIMIT 1', expect BY, actual BY pos 98, line 3, column 56, token BY : SELECT *\n FROM batch_control_line\n WHERE province_id = ? AND year=? LIMIT ORDER BY province_id LIMIT 1; nested exception is java.sql.SQLException: sql injection violation, syntax error: syntax error, error in :'RDER BY province_id LIMIT 1', expect BY, actual BY pos 98, line 3, column 56, token BY : SELECT *\n FROM batch_control_line\n WHERE province_id = ? AND year=? LIMIT ORDER BY province_id LIMIT 1", "trace": "org.springframework.jdbc.UncategorizedSQLException: \r\n### Error querying database. Cause: java.sql.SQLException: sql injection violation, syntax error: syntax error, error in :'RDER BY province_id LIMIT 1', expect BY, actual BY pos 98, lin

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{"date": "2023-05-31 15:49:40.066", "traceId": "system", "level": "WARN", "logger": "org.apache.shiro.authc.AbstractAuthenticator", "msg": "Authentication failed for token submission [org.apache.shiro.authc.UsernamePasswordToken - yangwenhao, rememberMe=false]. Possible unexpected error? (Typical or expected login exceptions should extend from AuthenticationException)."} java.util.concurrent.ExecutionException: feign.RetryableException: bee-system-service executing POST http://bee-system-service/system/getAuthData at java.base/java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.base/java.util.concurrent.FutureTask.get(FutureTask.java:191)

根据你提供的日志信息，看起来像是系统中的 Shiro 认证框架在进行用户身份认证时出现了错误。...此外，还有一个 "RetryableException" 异常，这可能是由于系统在尝试重新连接到某个远程服务时出现问题所致。...

NOTE: > Executing update_desktop_database intercept ... NOTE: > Executing update_gtk_immodules_cache intercept ... NOTE: Exit code 1. Output: /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/intercept_scripts-b51052418cd1de15aa19deeae9844eade47e1e2e32985d114ac9c6c1afe994aa/update_gtk_immodules_cache: line 15: /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/rootfs/usr/lib64/gtk-3.0/3.0.0/immodules.cache: No such file or directory chown: cannot access '/home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/rootfs/usr/lib64/gtk-3.0/3.0.0/immodules.cache': No such file or directory ERROR: The postinstall intercept hook 'update_gtk_immodules_cache' failed, details in /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/temp/log.do_rootfs NOTE: > Executing update_desktop_database intercept ... NOTE: > Executing update_gtk_immodules_cache intercept ... NOTE: Exit code 1. Output: /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/intercept_scripts-b51052418cd1de15aa19deeae9844eade47e1e2e32985d114ac9c6c1afe994aa/update_gtk_immodules_cache: line 15: /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/rootfs/usr/lib64/gtk-3.0/3.0.0/immodules.cache: No such file or directory chown: cannot access '/home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/rootfs/usr/lib64/gtk-3.0/3.0.0/immodules.cache': No such file or directory ERROR: The postinstall intercept hook 'update_gtk_immodules_cache' failed, details in /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/temp/log.do_rootfs DEBUG: Python function do_rootfs finished如何解决

如果上述解决方案无效，建议查看详细的错误日志文件 /home/wu/g2l/build-niicl-nom-r001l/tmp/work/nom_r001l-niic-linux/core-image-weston/1.0-r0/temp/log.do_rootfs，以获取更多关于错误的信息，帮助进一步...

/home/fujiayu/esp/esp-idf/tools/check_python_dependencies.py:12: DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html import pkg_resources Executing action: flash Running ninja in directory /home/fujiayu/esp/hello_world/build Executing "ninja flash"... [1/5] cd /home/fujiayu/esp/hello_world.../esp/hello_world/build/hello_world.bin hello_world.bin binary size 0x31ee0 bytes. Smallest app partition is 0x100000 bytes. 0xce120 bytes (80%) free. [1/1] cd /home/fujiayu/esp/hello_world..._world/build/bootloader/bootloader.bin Bootloader binary size 0x5290 bytes. 0x2d70 bytes (35%) free. [2/3] cd /home/fujiayu/esp/esp-idf/com...nents/esptool_py/run_serial_tool.cmake esptool esp32s3 -p /dev/ttyACM0 -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 80m --flash_size 2MB 0x0 bootloader/bootloader.bin 0x10000 hello_world.bin 0x8000 partition_table/partition-table.bin esptool.py v4.6.2 Serial port /dev/ttyACM0 A fatal error occurred: Could not open /dev/ttyACM0, the port doesn't exist CMake Error at run_serial_tool.cmake:66 (message): /home/fujiayu/.espressif/python_env/idf5.2_py3.8_env/bin/python;;/home/fujiayu/esp/esp-idf/components/esptool_py/esptool/esptool.py;--chip;esp32s3 failed. FAILED: CMakeFiles/flash cd /home/fujiayu/esp/esp-idf/components/esptool_py && /usr/bin/cmake -D IDF_PATH=/home/fujiayu/esp/esp-idf -D "SERIAL_TOOL=/home/fujiayu/.espressif/python_env/idf5.2_py3.8_env/bin/python;;/home/fujiayu/esp/esp-idf/components/esptool_py/esptool/esptool.py;--chip;esp32s3" -D "SERIAL_TOOL_ARGS=--before=default_reset;--after=hard_reset;write_flash;@flash_args" -D WORKING_DIRECTORY=/home/fujiayu/esp/hello_world/build -P /home/fujiayu/esp/esp-idf/components/esptool_py/run_serial_tool.cmake ninja: build stopped: subcommand failed. ninja failed with exit code 1, output of the command is in the /home/fujiayu/esp/hello_world/build/log/idf_py_stderr_output_21690 and /home/fujiayu/esp/hello_world/build/log/idf_py_stdout_output_21690

根据您提供的信息，看起来您正在尝试使用esp-idf工具进行编译和烧录操作，但是遇到了/dev/ttyACM0端口不存在的问题。这可能是由于端口名称不正确或设备未正确连接导致的。 建议您检查以下几点： 1. 确保设备已正确...

sqoop import --connect jdbc:mysql://zhaosai:3306/mydb --username root --password jqe6b6 --table news --target-dir /user/news --fields-terminated-by “;” --hive-import --hive-table news -m 1出现错误Warning: /opt/programs/sqoop-1.4.7.bin__hadoop-2.6.0/../hbase does not exist! HBase imports will fail. Please set $HBASE_HOME to the root of your HBase installation. Warning: /opt/programs/sqoop-1.4.7.bin__hadoop-2.6.0/../hcatalog does not exist! HCatalog jobs will fail. Please set $HCAT_HOME to the root of your HCatalog installation. Warning: /opt/programs/sqoop-1.4.7.bin__hadoop-2.6.0/../accumulo does not exist! Accumulo imports will fail. Please set $ACCUMULO_HOME to the root of your Accumulo installation. Warning: /opt/programs/sqoop-1.4.7.bin__hadoop-2.6.0/../zookeeper does not exist! Accumulo imports will fail. Please set $ZOOKEEPER_HOME to the root of your Zookeeper installation. 23/06/10 16:18:23 INFO sqoop.Sqoop: Running Sqoop version: 1.4.7 23/06/10 16:18:23 WARN tool.BaseSqoopTool: Setting your password on the command-line is insecure. Consider using -P instead. 23/06/10 16:18:23 INFO manager.MySQLManager: Preparing to use a MySQL streaming resultset. 23/06/10 16:18:23 INFO tool.CodeGenTool: Beginning code generation Sat Jun 10 16:18:23 CST 2023 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification. 23/06/10 16:18:24 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM news AS t LIMIT 1 23/06/10 16:18:24 INFO manager.SqlManager: Executing SQL statement: SELECT t.* FROM news AS t LIMIT 1 23/06/10 16:18:24 INFO orm.CompilationManager: HADOOP_MAPRED_HOME is /opt/programs/hadoop-2.7.6 注: /tmp/sqoop-root/compile/84ba419f00fa83cb5d16dba722729d01/news.java使用或覆盖了已过时的 API。 注: 有关详细信息, 请使用 -Xlint:deprecation 重新编译。 23/06/10 16:18:25 INFO orm.CompilationManager: Writing jar file: /tmp/sqoop-root/compile/84ba419f00fa83cb5d16dba722729d01/news.jar 23/06/10 16:18:25 WARN manager.MySQLManager: It looks like you are importing from mysql. 23/06/10 16:18:25 WARN manager.MySQLManager: This transfer can be faster! Use the --direct 23/06/10 16:18:25 WARN manager.MySQLManager: option to exercise a MySQL-specific fast path. 23/06/10 16:18:25 INFO manager.MySQLManager: Setting zero DATETIME behavior to convertToNull (mysql) 23/06/10 16:18:25 ERROR tool.ImportTool: Import failed: No primary key could be found for table news. Please specify one with --split-by or perform a sequential import with '-m 1'.

Please specify one with --split-by or perform a sequential import with '-m 1'.”，意思是在导入表 news 的过程中没有找到主键，需要使用 --split-by 参数指定一个主键或者使用 -m 1 进行串行导入。

Loading class com.mysql.jdbc.Driver'. This is deprecated. The new driver class is com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary. Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed ### The error may exist in mysql/user/mappers/usermapper.xml ### The error may involve mysql.user.mappers.usermapper.selectAll ### The error occurred while executing a query ### Cause: java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:149) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140) at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:147) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:80) at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:152) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:85) at com.sun.proxy.$Proxy4.selectAll(Unknown Source) at org.example.main2.main(main2.java:25) Caused by: java.sql.SQLNonTransientConnectionException: Public Key Retrieval is not allowed at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:110) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:829) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:449) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:242) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198) at java.sql.DriverManager.getConnection(Driv

java String url = "jdbc:mysql://localhost:3306/database?allowPublicKeyRetrieval=true"; 请确保将localhost:3306替换为您的MySQL服务器主机和端口，database替换为您要连接的数据库名称。

D:\idea\jdk-17.0.2\bin\java.exe "-javaagent:D:\idea\IntelliJ IDEA 2023.1.2\lib\idea_rt.jar=50123:D:\idea\IntelliJ IDEA 2023.1.2\bin" -Dfile.encoding=UTF-8 -classpath D:\java-workspace\code\javaeePrj\mybatis-tutorial\target\test-classes;D:\java-workspace\code\javaeePrj\mybatis-tutorial\target\classes;D:\BuildTool\maven\repos\org\mybatis\mybatis\3.4.6\mybatis-3.4.6.jar com.mapper.UseStudentMapper Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: com.mysql.cj.jdbc.Driver ### The error may exist in mappers/StudentMapper.xml ### The error may involve whatever.findById ### The error occurred while executing a query ### Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: com.mysql.cj.jdbc.Driver at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77) at com.mapper.impl.StudentMapperImpl.findById(StudentMapperImpl.java:25) at com.mapper.UseStudentMapper.main(UseStudentMapper.java:27)

1. 确保你已经将MySQL数据库驱动程序（例如：mysql-connector-java.jar）添加到了项目的依赖中。可以通过Maven或手动添加方式进行。 2. 检查你的classpath是否正确设置，确保MySQL数据库驱动程序在classpath中能够...

java.lang.RuntimeException: An error occurred while executing doInBackground() at android.os.AsyncTask$4.done(AsyncTask.java:399) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383) at java.util.concurrent.FutureTask.setException(FutureTask.java:252) at java.util.concurrent.FutureTask.run(FutureTask.java:271) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:919)

这个错误发生在执行AsyncTask的doInBackground()方法时，可能是由于以下原因之一导致的： 1. 网络连接问题：在异步任务中执行网络请求时，可能会发生网络连接问题，导致doInBackground()方法失败。...

This application has no explicit mapping for /error, so you are seeing this as a fallback. Sat Jun 10 23:26:34 CST 2023 There was an unexpected error (type=Internal Server Error, status=500). nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'. ### The error may exist in com/imust/mapper/AdminMapper.java (best guess) ### The error may involve com.imust.mapper.AdminMapper.login ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'.

CREATE USER 'newuser'@'localhost' IDENTIFIED WITH mysql_native_password BY 'user_password'; 其中，'newuser' 是你要创建的用户名，'localhost' 是允许该用户连接到 MySQL 的主机名，'user_password' 是该...

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