An exception occurred in the database while saving changes for context type 'blog_file_api.Services.BlogDB'. Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while saving the entity changes. See the inner exception for details.报错意味着什么

时间: 2023-03-15 17:21:06 浏览: 287
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这个错误消息表明在将变更保存到数据库中时，发生了一个异常。这可能是因为在保存变更时发生了错误，或者是因为数据库中的某些数据无效或不一致。为了确定问题的具体原因，应该检查内部异常的详细信息。这些信息可能会提供有关发生错误的原因以及如何解决问题的更多信息。
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Microsoft.EntityFrameworkCore.DbUpdateException:“An error occurred while saving the entity changes. See the inner exception for details.”

当在使用Microsoft.EntityFrameworkCore进行数据库操作时，可能会遇到DbUpdateException这样的错误。这个异常通常表示在尝试将数据保存到数据库时发生了错误，可能是由于多种原因导致的，比如更新的数据违反了...

fail: 2023/7/14 14:31:33.417 CoreEventId.QueryIterationFailed[10100] (Microsoft.EntityFrameworkCore.Query) An exception occurred while iterating over the results of a query for context type 'iMES.Core.EFDbContext.SysDbContext'. System.InvalidOperationException: There is already an open DataReader associated with this Connection which must be closed first. at Microsoft.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) at Microsoft.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) at Microsoft.Data.SqlClient.SqlCommand.ValidateCommand(Boolean isAsync, String method) at Microsoft.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, TaskCompletionSource1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry, String method) at Microsoft.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at Microsoft.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior) at Microsoft.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteReader(RelationalCommandParameterObject parameterObject) at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable1.Enumerator.InitializeReader(Enumerator enumerator) at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable1.Enumerator.<>c.<MoveNext>b__21_0(DbContext _, Enumerator enumerator) at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult](TState state, Func3 operation, Func3 verifySucceeded) at Microsoft.EntityFrameworkCore.Query.Internal.SingleQueryingEnumerable1.Enumerator.MoveNext()

这个问题通常是由于在使用 Entity Framework 进行查询时，存在未关闭的 DataReader 导致的。DataReaders 是用于读取数据库查询结果的对象，在使用完毕后需要显式地关闭。 要解决这个问题，您可以尝试以下几点： 1....

C:\Anaconda3\python.exe C:/pycharm.z/neo.py Traceback (most recent call last): File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 806, in acquire cx = self._free_list.popleft() IndexError: pop from an empty deque During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Anaconda3\lib\site-packages\py2neo\client\bolt.py", line 810, in _audit task.audit() File "C:\Anaconda3\lib\site-packages\py2neo\client\bolt.py", line 1303, in audit raise self._failure py2neo.errors.ClientError: [Security.Unauthorized] The client is unauthorized due to authentication failure. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\pycharm.z\neo.py", line 4, in <module> graph = Graph("bolt://localhost:7687", auth=("neo4j", "password")) File "C:\Anaconda3\lib\site-packages\py2neo\database.py", line 288, in __init__ self.service = GraphService(profile, **settings) File "C:\Anaconda3\lib\site-packages\py2neo\database.py", line 119, in __init__ self._connector = Connector(profile, **connector_settings) File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 960, in __init__ self._add_pools(*self._initial_routers) File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 982, in _add_pools pool = ConnectionPool.open( File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 649, in open seeds = [pool.acquire() for _ in range(init_size or cls.default_init_size)] File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 649, in seeds = [pool.acquire() for _ in range(init_size or cls.default_init_size)] File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 813, in acquire cx = self._connect() File "C:\Anaconda3\lib\site-packages\py2neo\client\__init__.py", line 764, in _connect cx = Connection.open(self.profile, user_agent=self怎么解决

根据您提供的错误信息，出现了两个异常：IndexError和ClientError。IndexError表示连接池中没有可用的连接，而ClientError表示由于身份验证失败而导致未经授权的客户端。 解决这些问题的步骤如下： ...

Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':id OR :id IS NULL)' at line 5\r\n### The error may exist in file [E:\\IdeaProjects\\taihaolian\\target\\classes\\mapper\\AdvertMapper.xml]\r\n### The error may involve defaultParameterMap\r\n### The error occurred while setting parameters\r\n### SQL: SELECT a.*, p.id AS position_id, p.name AS position_name, m.id AS media_id, m.file_name, m.file_type, m.file_url FROM advert a LEFT JOIN ad_position p ON a.position_id = p.id LEFT JOIN media_file m ON a.media_id = m.id WHERE (id = :id OR :id IS NULL)\r\n### Cause: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':id OR :id IS NULL)' at line 5\n; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':id OR :id IS NULL)'

这个错误提示是 MyBatis 在执行 SQL 查询时发生了语法错误。错误位置在查询语句的 WHERE 子句中，可能是由于 SQL 语法不正确导致的。具体地说，错误信息中提示说在第 5 行附近有语法错误，而查询语句中的 WHERE 子句...

1.2.14\AirtestIDE\airtest\core\android\static\adb\windows\adb.exe -P 5037 -s f19e7fbe shell ls [21:51:10][ERROR]<airtest.core.api> Traceback (most recent call last): File "airtest\core\android\adb.py", line 374, in shell File "airtest\core\android\adb.py", line 332, in raw_shell File "airtest\core\android\adb.py", line 197, in cmd airtest.core.error.AdbError: stdout[b'acct\r\napex\r\nbin\r\nbugreports\r\ncache\r\ncharger\r\nconfig\r\ncust\r\nd\r\ndata\r\ndebug_ramdisk\r\ndefault.prop\r\ndev\r\netc\r\nlost+found\r\nmnt\r\nodm\r\noem\r\nproc\r\nproduct\r\nproduct_services\r\nres\r\nsbin\r\nsdcard\r\nstorage\r\nsys\r\nsystem\r\nvendor\r\n'] stderr[b'ls: ./init.zygote64_32.rc: Permission denied\r\nls: ./init.rc: Permission denied\r\nls: ./init.usb.rc: Permission denied\r\nls: ./ueventd.rc: Permission denied\r\nls: ./init.zygote32.rc: Permission denied\r\nls: ./init.recovery.hardware.rc: Permission denied\r\nls: ./init: Permission denied\r\nls: ./init.miui.google_revenue_share_v2.rc: Permission denied\r\nls: ./init.miui.cust.rc: Permission denied\r\nls: ./init.environ.rc: Permission denied\r\nls: ./init.miui.post_boot.sh: Permission denied\r\nls: ./init.miui.qadaemon.rc: Permission denied\r\nls: ./verity_key: Permission denied\r\nls: ./init.recovery.qcom.rc: Permission denied\r\nls: ./init.miui.rc: Permission denied\r\nls: ./init.usb.configfs.rc: Permission denied\r\nls: ./init.exaid.hardware.rc: Permission denied\r\nls: ./init.miui.google_revenue_share.rc: Permission denied\r\nls: ./init.miui.nativedebug.rc: Permission denied\r\nls: ./init.miui.early_boot.sh: Permission denied\r\nls: ./metadata: Permission denied\r\n'] During handling of the above exception, another exception occurred:

这个异常是由airtest.core.android.adb模块的shell函数引发的。具体的错误信息是stdout和stderr的内容，其中包含了一些Permission denied的提示。根据这个错误信息，可能是由于权限问题导致的。建议检查相关的权限...

springboot+MyBatis连接MySql数据库遇到问题：### Error querying database. Cause: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 11,751 milliseconds ago. The last packet sent successfully to the server was 11,858 milliseconds ago. ### The error may exist in file [/app/tomcat/webapps/project/WEB-INF/classes/mapper/PersonWeekMapper.xml] ### The error may involve com.xmsme.mapper.PersonWeekMapper.selectPersonWeekList-Inline ### The error occurred while setting parameters ### SQL: SELECT count(0) FROM (SELECT WEEK.id, WEEK.sub_time, WEEK.need_thing, WEEK.plan_content, WEEK.target_content, WEEK.sub_time AS update_time, WEEK.create_time, WEEK.week_start, WEEK.user_id, WEEK.week_end, readInfo.id AS readId, readInfo.read_status AS readStatus, updateor.nick_name FROM t_person_weekly AS WEEK LEFT JOIN sys_user sUser ON sUser.user_id = WEEK.user_id LEFT JOIN t_read_info readInfo ON readInfo.business_id = WEEK.id AND readInfo.read_type = 'PER' LEFT JOIN sys_user updateor ON updateor.user_id = WEEK.update_by LEFT JOIN sys_user_role uRole ON uRole.user_id = WEEK.update_by LEFT JOIN sys_user_post uPost ON uPost.user_id = WEEK.user_id LEFT JOIN t_project_person person ON person.user_id = WEEK.user_id LEFT JOIN t_project_person Pperson ON Pperson.project_id = person.project_id WHERE 1 = 1 AND WEEK.is_del = 0 AND WEEK.draft = 'N' AND Pperson.user_id = ? GROUP BY WEEK.id) table_count ### Cause: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 11,751 milliseconds ago. The last packet sent successfully to the server was 11,858 milliseconds ago. ; Communications link failure The last packet successfully received from the server was 11,751 milliseconds ago. The last packet sent successfully to the server was 11,858 milliseconds ago.; nested exception is com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure The last packet successfully received from the server was 11,751 milliseconds ago. The last packet sent successfully to the server was 11,858 milliseconds ago.

这个错误通常是因为与数据库的连接出现了问题。有几个可能的原因导致这个问题： ... 2. 数据库服务未启动：请确保你的数据库服务已经启动，并且可以正常访问。 3. 数据库连接超时：如果你的数据库连接超时时间设置得过...

HTTP Status 500 – Internal Server Error Type Exception Report Message Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NullPointerException: Pool must not be null. ### The error may exist in mapper/banner.xml ### The error may involve com.dao.BannerDAO.getAllBanner ### The error occurred while executing a query ### Cause: java.lang.NullPointerException: Pool must not be null. org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) javax.servlet.http.HttpServlet.service(HttpServlet.java:624) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) javax.servlet.http.HttpServlet.service(HttpServlet.java:731) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

这个错误是在处理请求时出现了问题，其中嵌套的异常是 MyBatisSystemException，MyBatisSystemException 的嵌套异常是 PersistenceException。在执行查询时出现了 NullPointerException，Pool 为空。...

13-Jul-2023 20:50:46.111 严重 [http-nio-8080-exec-2] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [DispatcherServlet] in context with path [/HotelSSM_Web_exploded] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: 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: No suitable driver ### The error may exist in file [D:\ChangXun\Learn\project0711\SSM_Hotel_room_reservation-master\SSM_Hotel_room_reservation-master\HotelSSM\out\artifacts\HotelSSM_Web_exploded\WEB-INF\classes\config\mybatis\mapper\RoomTypeMapper.xml] ### The error may involve com.ischoolbar.programmer.dao.RoomTypeDao.findList ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: No suitable driver] with root cause java.sql.SQLException: No suitable driver at java.sql.DriverManager.getDriver(DriverManager.java:315)

这个错误是由于无法获取适合的数据库驱动程序导致的。在这种情况下，通常是因为没有正确配置数据库驱动程序或缺少相应的依赖项。 要解决这个问题，你可以按照以下步骤进行操作： 1. 确保你的项目中包含了正确的...

Traceback (most recent call last): File "paddle\fluid\ir.py", line 24, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\proto\pass_desc_pb2.py", line 16, in <module> ModuleNotFoundError: No module named 'framework_pb2' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "main.py", line 1, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "index.py", line 7, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "leis\jietuwj.py", line 8, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddleocr\__init__.py", line 14, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddleocr\paddleocr.py", line 21, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\__init__.py", line 62, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\__init__.py", line 15, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\spawn.py", line 24, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\utils\launch_utils.py", line 27, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\fleet\__init__.py", line 31, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\fleet\fleet.py", line 33, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\ir.py", line 28, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\proto\pass_desc_pb2.py", line 16, in <module> ModuleNotFoundError: No module named 'framework_pb2' [15508] Failed to execute script 'main' due to unhandled exception!

这是一个 Python 的错误，看起来是在使用 PaddlePaddle 框架时出现了问题。可能是因为缺少某个依赖项或环境配置不正确导致的。你可以尝试更新 PaddlePaddle 和相关的依赖项，或者检查你的环境配置是否正确。...

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...

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'.

这个错误信息看起来是你的应用程序在访问数据库时出现了问题，具体来说是因为无法加载 MySQL 数据库的验证插件 caching_sha2_password。 解决这个问题的方法是在 MySQL 中创建一个具有正确权限的用户，并使用该用户...

ubuntu16.04运行时报错CMake Error at bobac2_description/CMakeLists.txt:147 (add_dependencies): Cannot add target-level dependencies to non-existent target "bobac2_description_node". The add_dependencies works for top-level logical targets created by the add_executable, add_library, or add_custom_target commands. If you want to add file-level dependencies see the DEPENDS option of the add_custom_target and add_custom_command commands. CMake Error at bobac2_description/CMakeLists.txt:150 (target_link_libraries): Cannot specify link libraries for target "bobac2_description_node" which is not built by this project. -- Configuring incomplete, errors occurred! See also "/home/bobac3/ros_workspace/build/CMakeFiles/CMakeOutput.log". See also "/home/bobac3/ros_workspace/build/CMakeFiles/CMakeError.log". Makefile:2796: recipe for target 'cmake_check_build_system' failed make: *** [cmake_check_build_system] Error 1 CMake Error at bobac2_description/CMakeLists.txt:147 (add_dependencies): Cannot add target-level dependencies to non-existent target "bobac2_description_node". The add_dependencies works for top-level logical targets created by the add_executable, add_library, or add_custom_target commands. If you want to add file-level dependencies see the DEPENDS option of the add_custom_target and add_custom_command commands. CMake Error at bobac2_description/CMakeLists.txt:150 (target_link_libraries): Cannot specify link libraries for target "bobac2_description_node" which is not built by this project. -- Configuring incomplete, errors occurred! See also "/home/bobac3/ros_workspace/build/CMakeFiles/CMakeOutput.log". See also "/home/bobac3/ros_workspace/build/CMakeFiles/CMakeError.log". Makefile:2796: recipe for target 'cmake_check_build_system' failed make: *** [cmake_check_build_system] Error 1

这个错误可能是因为在运行CMake时，找不到名为"bobac2_description_node"的目标。这可能是因为在CMakeLists.txt文件中没有正确地定义目标或源文件。您可以检查一下CMakeLists.txt文件中的目标和源文件是否正确定义。...

request.js?b775:93 Uncaught (in promise) Error: ### Error querying database. Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'CREATE_TIME' in where clause is ambiguous ### The error may exist in URL [jar:file:/root/javaproject/jxSms/ruoyi-admin.jar!/BOOT-INF/lib/ruoyi-boss-3.8.5.jar!/mapper/mo/GMoMessageMapper.xml] ### The error may involve com.ruoyi.mo.mapper.GMoMessageMapper.selectGMoMessageListByParam-Inline ### The error occurred while setting parameters ### SQL: SELECT count(0) FROM g_mo_message ms LEFT JOIN sys_dept d ON ms.DEPT_ID = d.dept_id LEFT JOIN sys_user u ON ms.USER_ID = u.user_id WHERE CREATE_TIME >= ? AND CREATE_TIME <= ? ### Cause: java.sql.SQLIntegrityConstraintViolationException: Column 'CREATE_TIME' in where clause is ambiguous ; Column 'CREATE_TIME' in where clause is ambiguous; nested exception is java.sql.SQLIntegrityConstraintViolationException: Column 'CREATE_TIME' in where clause is ambiguous at _default (request.js?b775:93:1)

这段错误信息是指在执行 JavaScript 中的一个 Promise 对象时，发生了一个未捕获的错误，导致该 Promise 对象被拒绝（rejected）。具体错误原因需要进一步分析代码才能确定。可能是因为 Promise 对象中的代码逻辑...

解析这个报错INTEL MKL ERROR: dlopen(/Users/baiminchen/opt/anaconda3/lib/libmkl_core.1.dylib, 0x0009): tried: '/Users/baiminchen/opt/anaconda3/lib/libmkl_core.1.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/Users/baiminchen/opt/anaconda3/lib/libmkl_core.1.dylib' (no such file), '/Users/baiminchen/opt/anaconda3/lib/libmkl_core.1.dylib' (no such file). Intel MKL FATAL ERROR: Cannot load libmkl_core.1.dylib. Traceback (most recent call last): File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/isolated/_parent.py", line 373, in call return isolated.call(function, *args, **kwargs) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/isolated/_parent.py", line 302, in call ok, output = loads(b64decode(self._read_handle.readline())) EOFError: EOF read where object expected During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/Users/baiminchen/opt/anaconda3/bin/pyinstaller", line 8, in <module> sys.exit(_console_script_run()) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/__main__.py", line 194, in _console_script_run run() File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/__main__.py", line 180, in run run_build(pyi_config, spec_file, **vars(args)) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/__main__.py", line 61, in run_build PyInstaller.building.build_main.main(pyi_config, spec_file, **kwargs) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/building/build_main.py", line 971, in main build(specfile, distpath, workpath, clean_build) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/building/build_main.py", line 893, in build exec(code, spec_namespace) File "/Users/baiminchen/Desktop/database of xinstitute/main.spec", line 7, in <module> a = Analysis( File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/building/build_main.py", line 378, in __init__ self.hookspath += discover_hook_directories() File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/isolated/_parent.py", line 404, in wrapped return call(function, *args, **kwargs) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/isolated/_parent.py", line 373, in call return isolated.call(function, *args, **kwargs) File "/Users/baiminchen/opt/anaconda3/lib/python3.9/site-packages/PyInstaller/isolated/_parent.py", line 244, in __exit__ self._write_handle.flush() BrokenPipeError: [Errno 32] Broken pipe

错误信息表明 PyInstaller 在尝试加载 Intel MKL 库文件 libmkl_core.1.dylib 时失败了，并且指出了找不到这个文件。这通常是因为该文件在本机上没有安装或者安装路径不正确。你需要检查你的系统中是否已经正确安装...

分析错误原因"\r\n### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Unknown database 'dszl'\r\n### The error may exist in com/hushi/cms/dao/ContractorPersonDao.java (best guess)\r\n### The error may involve defaultParameterMap\r\n### The error occurred while setting parameters\r\n### SQL: SELECT COUNT(1) total, log.user_name userName, log.user_unit userUnit FROM dszl.access_logs log where log.access_time>DATE_SUB(CURDATE(), INTERVAL 1 YEAR) GROUP BY log.user_name\r\n### Cause: java.sql.SQLSyntaxErrorException: Unknown database 'dszl'\n; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown database 'dszl'"

这个错误是由于查询数据库时指定了一个未知的数据库名称 "dszl"，导致 SQL 语法错误。可以检查一下数据库连接配置中是否正确设置了数据库名称，或者数据库中是否存在该名称的数据库。如果确认数据库名称正确无误，...

我的代码 package com.neutech.service.impl; import com.baomidou.mybatisplus.core.metadata.IPage; import com.baomidou.mybatisplus.extension.plugins.pagination.Page; import com.neutech.entity.Product; import com.neutech.mapper.ProductMapper; import com.neutech.service.ProductService; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest public class ProductServiceImplTest { @Autowired private ProductMapper productMapper; @Test public void test(){ Page page = new Page<>(1,2); IPage iPage = productMapper.selectPage(page,null); System.out.println(iPage); } }报错org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 ### The error may exist in com/neutech/mapper/ProductMapper.java (best guess) ### The error may involve com.neutech.mapper.ProductMapper.selectPage_mpCount ### The error occurred while handling results ### SQL: SELECT COUNT(*) FROM product ### Cause: java.lang.IndexOutOfBoundsException: Index: 0, Size: 告诉我怎么改

根据报错信息，可以看出是在执行 MyBatis 的查询语句时发生了错误，具体原因是在执行 selectPage_mpCount 方法时，发生了 java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 异常，可能是因为查询结果为...
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