<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[IKonwNothing的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/IKonwNothing</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; IKonwNothing]]></copyright><item><title><![CDATA[【SELECT list is not in GROUP BY clause】当查询SQL出现这个报错 解决方案]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/151893676</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/151893676</guid><author>IKonwNothing</author><pubDate>Sat, 20 Sep 2025 11:09:32 +0800</pubDate><description><![CDATA[【SELECT list is not in GROUP BY clause】当查询SQL出现这个报错 解决方案]]></description><category></category></item><item><title><![CDATA[直接让前端请求代理到自己的本地服务器，告别CV报文到自己的API工具，解放双手]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/151186609</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/151186609</guid><author>IKonwNothing</author><pubDate>Thu, 04 Sep 2025 15:28:44 +0800</pubDate><description><![CDATA[直接让前端请求代理到自己的本地服务器，告别CV报文到自己的API工具，解放双手]]></description><category></category></item><item><title><![CDATA[浏览器好用插件-在官方页面上请求添加请求头信息]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/151186360</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/151186360</guid><author>IKonwNothing</author><pubDate>Thu, 04 Sep 2025 15:11:23 +0800</pubDate><description><![CDATA[浏览器好用插件-在官方页面上请求添加请求头信息]]></description><category></category></item><item><title><![CDATA[将包含父子关系的扁平列表 List＜Demo＞ 转换成树形结构的 List＜DemoVO＞，每个节点包含自己的子节点列表]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/148637839</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/148637839</guid><author>IKonwNothing</author><pubDate>Fri, 13 Jun 2025 17:52:44 +0800</pubDate><description><![CDATA[将包含父子关系的扁平列表 List<Demo> 转换成树形结构的 List<DemoVO>，每个节点包含自己的子节点列表]]></description><category></category></item><item><title><![CDATA[GitLab统计一段时间自己修改了多少行代码【新增、修改、删除】-----记录常用GIT命令]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/146009775</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/146009775</guid><author>IKonwNothing</author><pubDate>Tue, 04 Mar 2025 11:22:54 +0800</pubDate><description><![CDATA[GitLab统计一段时间自己修改了多少行代码【新增、修改、删除】-----记录常用GIT命令]]></description><category></category></item><item><title><![CDATA[MYSQL直接在SQL提取json字符串中的内容-----将13位时间戳转换成标准的日期格式【记录SQL常用函数】]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145616088</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145616088</guid><author>IKonwNothing</author><pubDate>Thu, 13 Feb 2025 17:10:05 +0800</pubDate><description><![CDATA[MYSQL直接在SQL提取json字符串中的内容-----将13位时间戳转换成标准的日期格式【记录SQL常用函数】]]></description><category></category></item><item><title><![CDATA[mysql直接在sql中将分组查询出来的多个属性的list，拼接成一个字符串，最后的结果只要一个大的字符串]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145324646</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145324646</guid><author>IKonwNothing</author><pubDate>Thu, 23 Jan 2025 15:41:34 +0800</pubDate><description><![CDATA[mysql直接在sql中将分组查询出来的多个属性的list，拼接成一个字符串，最后的结果只要一个大的字符串]]></description><category></category></item><item><title><![CDATA[JAVA 使用反射比较对象属性的变化，记录修改日志。使用注解【策略模式】，来进行不同属性枚举值到中英文描述的切换，支持前端国际化。]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145278320</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145278320</guid><author>IKonwNothing</author><pubDate>Tue, 21 Jan 2025 10:48:53 +0800</pubDate><description><![CDATA[JAVA 使用反射比较对象属性的变化，记录修改日志。使用注解【策略模式】，来进行不同属性枚举值到中英文描述的切换，支持前端国际化。]]></description><category></category></item><item><title><![CDATA[JAVA使用自定义注解，在项目中实现EXCEL文件的导出]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145244178</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145244178</guid><author>IKonwNothing</author><pubDate>Sun, 19 Jan 2025 16:48:31 +0800</pubDate><description><![CDATA[【代码】JAVA使用自定义注解，在项目中实现EXCEL文件的导出。]]></description><category></category></item><item><title><![CDATA[本类方法调用，如何使事务依然生效；调用本类方法为什么要用AopContext.currentProxy()]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145135350</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145135350</guid><author>IKonwNothing</author><pubDate>Tue, 14 Jan 2025 11:49:31 +0800</pubDate><description><![CDATA[本类方法调用，如何使事务依然生效；调用本类方法为什么要用AopContext.currentProxy()]]></description><category></category></item><item><title><![CDATA[JAVA 使用apache poi实现EXCEL文件的输出；apache poi实现标题行的第一个字符为红色；EXCEL设置某几个字符为别的颜色]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/145042351</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/145042351</guid><author>IKonwNothing</author><pubDate>Thu, 09 Jan 2025 21:00:05 +0800</pubDate><description><![CDATA[【代码】JAVA 使用apache poi实现EXCEL文件的输出；apache poi实现标题行的第一个字符为红色；EXCEL设置某几个字符为别的颜色。]]></description><category></category></item><item><title><![CDATA[Mysql数据库连接数满了（too many connection）处理方法【详细教程】]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144906969</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144906969</guid><author>IKonwNothing</author><pubDate>Fri, 03 Jan 2025 12:04:17 +0800</pubDate><description><![CDATA[Mysql数据库连接数满了处理方法【详细教程】]]></description><category></category></item><item><title><![CDATA[线程并发 车票超卖问题 4种创建线程的代码实现 用CountDownLatch来记录多个线程全部执行完的耗时]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144746512</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144746512</guid><author>IKonwNothing</author><pubDate>Thu, 26 Dec 2024 15:57:26 +0800</pubDate><description><![CDATA[线程并发 车票超卖问题 4种创建线程的代码实现 用CountDownLatch来记录多个线程全部执行完的耗时]]></description><category></category></item><item><title><![CDATA[JAVA 查询对象大小 查询当前JVM堆内存 【数据在数据库中占的大小和数据转换成list的大小 大概是1：3】]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144701419</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144701419</guid><author>IKonwNothing</author><pubDate>Tue, 24 Dec 2024 19:40:12 +0800</pubDate><description><![CDATA[JAVA 查询对象大小 查询当前JVM堆内存  【数据在数据库中占的大小和数据转换成list的占内存大小  大概是1：3】]]></description><category></category></item><item><title><![CDATA[数据库发生了死锁怎么办]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144604408</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144604408</guid><author>IKonwNothing</author><pubDate>Fri, 20 Dec 2024 10:51:31 +0800</pubDate><description><![CDATA[数据库发生了死锁怎么办]]></description><category></category></item><item><title><![CDATA[List直接使用removeAll报错]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144594324</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144594324</guid><author>IKonwNothing</author><pubDate>Thu, 19 Dec 2024 20:36:01 +0800</pubDate><description><![CDATA[List直接使用removeAll报错

需要先将list转换才能使用]]></description><category></category></item><item><title><![CDATA[MYSQL 利用concat函数 生成更新或者插入SQL]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144561226</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144561226</guid><author>IKonwNothing</author><pubDate>Wed, 18 Dec 2024 15:00:06 +0800</pubDate><description><![CDATA[MYSQL 利用concat函数 生成更新或者插入SQL]]></description><category></category></item><item><title><![CDATA[java 双层for循环 使用标签来控制外层for循环]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144559813</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144559813</guid><author>IKonwNothing</author><pubDate>Wed, 18 Dec 2024 14:13:44 +0800</pubDate><description><![CDATA[java 双层for循环 使用标签来控制外层for循环]]></description><category></category></item><item><title><![CDATA[interval在SQL中的用法【MYSQL常用函数记录】]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144454695</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144454695</guid><author>IKonwNothing</author><pubDate>Fri, 13 Dec 2024 16:48:50 +0800</pubDate><description><![CDATA[interval在SQL中的用法]]></description><category></category></item><item><title><![CDATA[JAVA stream流将list先根据一个属性分组，再根据另一个属性进行分组]]></title><link>https://blog.youkuaiyun.com/IKonwNothing/article/details/144452357</link><guid>https://blog.youkuaiyun.com/IKonwNothing/article/details/144452357</guid><author>IKonwNothing</author><pubDate>Fri, 13 Dec 2024 15:46:09 +0800</pubDate><description><![CDATA[stream流将list先根据一个属性分组，再根据另一个属性进行分组]]></description><category></category></item></channel></rss>