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Vagrant The version of powershell currently installed on this host is less than the required问题解决

问题描述:Vagrant failed to initialize at a very early stage:The version of powershell currently installed on this host is less than the required minimum version. Please upgrade the installed version of po

#vagrant
JPA org.hibernate.service.spi.ServiceException: Unable to create requested service [xxx]问题解决

问题描述:Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]问题分析:1、Spring Boot配置里面没有设置数据库类型,导致报错。解决办法:(1)使用spring.

#hibernate
js sessionStorage对象使用详解

sessionStorage说明:用于临时保存同一窗口(或标签页)的数据,在关闭窗口或标签页之后将会删除这些数据,最多保存5M数据。1 setItem()说明:保存key/value数据,数据必须为string类型。格式:setItem(key,value);示例://保存string数据sessionStorage.setItem("key", "value");//保存json数据var js

C# 正则表达式判断是否为特殊字符

其实判断是否为特殊字符有两种思路:第一种思路,将所有特殊字符都列出来,判断目标字符串包含特殊字符。public bool IsSpecialChar(string str){Regex regExp = new Regex("[ \\[ \\] \\^ \\-_*×――(^)$%~!@@##$…&%¥—+=<>《》!!???::•`·、。,;,.;/\'\"...

Nacos IllegalStateException:failed to req API:/nacos/v1/ns/instance/list after all servers([x])问题解决

问题描述:java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance/list after all servers([localhost:8848]) tried: failed to req API:localhost:8848/nacos/v1/ns/instance/list. code:500 msg:

#java
Java NullPointerException: element cannot be mapped to a null key问题解决

问题描述:java.lang.NullPointerException: element cannot be mapped to a null key问题分析:1、使用Collectors.groupingBy()进行分组时,分组值存在null值。List<String> strList = new ArrayList<>(Arrays.asList("11", "12",

#elementui#前端#javascript
Quartz JobPersistenceException: Couldn‘t store trigger ‘xxx‘ for ‘xxx‘ job:ORA-08177:无法连续访问此事务处理问题解决

问题描述:org.quartz.JobPersistenceException: Couldn't store trigger 'DEFAULT.TASK_CLASS_NAME2a3a476d7640454f89d72d8c6f8ea6d0' for 'DEFAULT.TASK_CLASS_NAME2a3a476d7640454f89d72d8c6f8ea6d0' job:ORA-08177: 无

Quartz 实现数据库配置定时任务

1 SQL(定时任务表)创建定时任务表sql:create table t_job(job_id varchar(36) primary key COMMENT '定时任务ID',job_name varchar(200) DEFAULT NULL COMMENT '定时任务名称',status varchar(1) DEFAULT null comment '有效状态',enable_flag

Java class sun.net.www.protocol.http.HttpURLConnection cannot be cast to class问题解决

问题描述:java.lang.ClassCastException: class sun.net.www.protocol.http.HttpURLConnection cannot be cast to class javax.net.ssl.HttpsURLConnection (sun.net.www.protocol.http.HttpURLConnection and javax.net

Ueditor 出现请求后台配置项http错误,上传功能将不能正常使用!问题解决

问题描述:请求后台配置项http错误,上传功能将不能正常使用!问题分析:出现这种提示要不就是ueditor.config.js配置不对,要不就是config.json配置不对。问题解决:1、ueditor.config.js的serverUrl配置不对。具体步骤可参考以下博客。C# 使用Ueditor出现http://localhost:***/ueditor/net/controller.ash

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