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原创 Cassandra报错 Not enough replicas avaiable for query at consistency LOCAL_ONE
Cassandra 报错 Not enough replicas avaiable for query at consistency LOCAL_ONE (1 required but only 0 alive) schemaversionmismatchdetected;checktheschemaversionsofyournodesinsystem.localandsystem.peers.
2024-05-16 09:38:22
426
原创 Vsftpd报错expired password for user, authentication failure
Vsftpd报错expired password for user, authentication failure, Login faied for user [ftpuser], reply code is: 530。FTP的PAM验证问题
2024-04-22 15:11:06
1452
原创 Springboot 升级导致跨域 No ‘Access-Control-Allow-Origin‘ header is present on the requested resource
SpringBoot升级,导致跨域报错AccesstoXMLHttpRequestat'http://127.0.0.1:8080/xxx'fromorigin'http://127.0.0.1:8081'hasbeenblockedbyCORSpolicy:No'Access-Control-Allow-Origin'headerispresentontherequestedresource.
2024-04-22 10:19:26
767
原创 MySQL数据库导入sql文件 Got a packet bigger than max_allowed_packet bytes
mysqldump导出sql文件,MySQL数据库导入,Got a packet bigger than max_allowed_packet bytes
2024-03-15 17:36:49
362
1
原创 Java poi导入合并单元格的Excel数据,复杂树形结构,处理重复数据
Excel导入,Java poi导入合并单元格的Excel数据,复杂树形结构,重复数据
2023-10-09 11:22:24
1414
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原创 CVE-2023-22602 CVE-2023-34478 shiro升级1.12.0报错类文件具有错误的版本 61.0, 应为 52.0
CVE-2023-22602 CVE-2023-34478 shiro升级 若依框架类文件具有错误的版本 61.0, 应为 52.0
2023-09-15 10:33:28
933
2
原创 CVE-2023-20860 将组件 org.springframework:spring-webmvc 升级至 5.3.26 及以上版本
若依框架,将组件 org.springframework:spring-webmvc 升级至 5.3.26 及以上版本,CVE-2023-20860
2023-09-14 17:48:33
3231
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原创 在总数不满足的条件下均分不同类型数据的代码逻辑
题库中包含各类型题目,题库中题量未必满足指定题目总数,在混合练习的前提下,如果题库中题目数足够,三种类型题目数量均分,否则,不满足均分后题目数量的题型取全部题目,剩下的均分,依次类推。
2023-09-13 17:46:39
113
原创 Error instantiating class with invalid types or values
代码报错:nested exception is org.apache.ibatis.reflection.ReflectionException: Error instantiating class PaperQuestionDetail with invalid types (PaperQuestion) or values (x). Cause: java.lang.IllegalArgumentException: argument type mismatch。
2023-09-13 17:23:25
475
原创 Postman无法将Content-Type从text/plain改为appliation/json
Postman无法将Content-Type从text/plain改为appliation/json
2023-03-17 11:06:08
4104
3
原创 Jeecms跨域 Request header field is not allowed by Access-Control-Allow-Headers in preflight response
Jeecms框架,前后端分离二次开发,前端跨域报错Request header field is not allowed by Access-Control-Allow-Headers in preflight response
2023-03-17 10:39:17
1237
原创 HeidiSQL不支持DELIMITER的解决办法
HeidiSQL不支持DELIMITER的解决办法报错 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to user near 'delimiter' at line 1
2022-11-15 17:50:24
331
原创 Group By和Order By一起使用的问题
Group By和Order By一起使用的问题先Order By后Group By的实现
2022-11-04 17:03:49
7643
4
原创 游标cursor取值报错 Incorrect number of FETCH variables
Incorrect number of FETCH variables,出现在游标select字段与fetch into不匹配,改为field_1, field_2之后成功运行
2022-11-03 11:42:36
877
原创 调用存储过程报错 MySQL server version for the right syntax to use near ‘NULL‘ at line 1
MySQL调用存储过程call报错 MySQL server version for the right syntax to use near 'NULL' at line 1
2022-11-03 11:29:22
3309
原创 MySQL存储过程删除历史数据
MySQL存储过程实现数据循环清理,每N条保留1条,删除冗余数据the right syntax to use near NULL at line 1IncorrectnumberofFETCHvariables
2022-11-03 09:47:21
1220
原创 net.sf.jsqlparser.JSQLParserException
sql中case when语句导致报错net.sf.jsqlparser.JSQLParserException
2022-10-27 17:35:57
3613
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