Algorithms of Math: Divide Two Integers
Problem DescriptionGiven two integers dividend and divisor, divide two integers without using multiplication, division, and mod operator. Th
Apache POI Usage
In this post, the code examples of Apache POI are based on org.apache.poi v5.0.0 WordWrite Data into WordA basic use example 12345678910publ
MySQL Default Order
In the SQL world, order is not an inherent property of a set of data. Thus, you get no guarantees from your RDBMS that your data will come b
Web Project Functions: Export Data
Ways of Exporting RequestsSynchronized ExportIf to exported data is not large and the exporting process can be finished in a few seconds, we
How to learn programming technologies
关于学习编程技术，我认为，没有最好的方法，只有适合自己当前水平状态的、可以达成自己目标的学习方法。每个人有不同的适应自己的学习方法，每个阶段有不同的学习方法，学习的目的不同使用的方法也不同。简而言之，方法不是固定不变的。 学习方法一般有： 看官方文档。 看书籍。 看博客、教程等
HTML元素的id是否唯一
HTML 元素原则上应该保持唯一，但没有硬性要求。 存在多个相同的 id 元素时，CSS 对所有元素都生效。 1234567891011<style> #myId { color:red; }</style>&
[Spring Error] Invalid list index 256
BackgroundUsing List<Integer> ids to receive a form parameter of HTTP request. The size of the parameter ids is over 255. Error Info1o
Java Security Usage
EncodeBase6412345String text = "hello 世界";String encodeText = Base64.getEncoder().encodeToString(text.getBytes(StandardCharsets.UT
MyBatis-Plus Common Usage
QueryQueryWrapperQueryWrapper 1234567// usage 1QueryWrapper<SysUser> queryWrapper = new QueryWrapper<SysUser>() .eq("use
[Spring Error] Could not resolve placeholder
BackgroundRunning the Spring Boot project occurs an error. Error Info123Caused by: java.lang.IllegalArgumentException: Could not resolve pla
