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redis集群，模块启动报错：PoolException: Returned connection io.lettuce.core.cluster.StatefulRedisClusterConnectionImpl@49bd0985 was either previously returned or does not belong to this connection provider
redis 3主3从的配置 启动正常，客户端命令使用正常，突然今天开发测试环境 有些模块报错了： org.springframework.data.redis.connection.PoolException: Returned connection io.lettuce.core.cluster. ......
The last packet sent successfully to the server was 0 milliseconds ago
问题：在做网站的时候，使用JDBC进行数据库连接的时候，死活连接不上，并出现了标题所示错误。 在服务器上用dbeaver来连接是没有问题的。 解决方法：检查阿里云安全组设置，发现没有把3306开放出去，开放后就可以了 ......
Git报错解决：fatal: unable to access ‘https://github.com/.......‘: OpenSSL SSL_read: Connection was reset
昨天还可以git push代码到远程仓库，今天git push时报了这个错：fatal: unable to access 'https://github.com/.......': OpenSSL SSL_read: Connection was reset, errno 10054 产生原因：一 ......
解决Mixed Content: The page at https://* was loaded over HTTPS, but requested an insecure XMLHttpReque
问题： 前端页面调用后端接口加载不出来 原因分析： 通过查看浏览器调试 console 日志，得到报错如下 原文： Mixed Content: The page at https://* was loaded over HTTPS, but requested an insecure XMLHtt ......
【】Java Error: Port 9095 was already in use
问题描述 Java Error: Port 9095 was already in use 问题原因 端口被占用导致 解决方案 Windsow系统 netstat -ano|findstr 9090 查询到占用 9090 端口的进程PID为 9784。 tasklist|findstr 9784 查 ......
Elasticsearch(es)查询报错：Result window is too large, from + size must be less than or equal to: [10000] but was [20000
{"error":{"root_cause":[{"type":"query_phase_execution_exception","reason":"Result window is too large, from + size must be less than or equal to: [10 ......
报错 qt.qpa.plugin: Could not load the Qt platform plugin “xcb“ in ““ even though it was found
参考： https://blog.csdn.net/qq_39938666/article/details/120452028 使用ubuntu系统下python的seaborn模块画图，报错： qt.qpa.plugin: Could not load the Qt platform plugin ......
VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found
原因： VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found 出现的原因是你提供的视频连接可能没有扩展名导致，这样videojs无法知道视频的格式。 需要在type属性指定播放视频的格式 ......
vue3报错 Vue received a Component which was made a reactive object.
报错信息如下： Vue received a Component which was made a reactive object. This can lead to unnecessary performance overhead, and should be avoided by marking ......
Activity推送活动的时候引发的并发异常org.activiti.engine.ActivitiOptimisticLockingException: ProcessInstance[d38c3a8f-b0c2-11ed-b989-525400a941cf] was updated by another transaction concurrently
这是在推送任务的时候工作流并没有修改成功数据库内容所以抛出的异常，异常原因是是因为工作流事件中有修改工作流表数据的操作，然后推送任务的时候也有修改工作流表数据的操作，所以引发了并发冲突，在工作流监听事件的实现类中不可以调用工作流相关变更数据的操作 把事件中的这些操作去除掉就好了 ......
To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier.
To display this page, Firefox must send information that will repeat any action (such as a search or order confirmation) that was performed earlier. P ......