大家好，首先祝大家新年快乐，身体健康，代码没bug，投产顺利。本次整理带来的有关于mybatis，java，spring，springboot，linux，shell，Python，HarmonyOS,算法等多种类技术干货，希望可以帮到大家。  1.MyBatis 探秘之#{} 与 ${} 参传差异解码(数据库连接池筑牢数据交互根基)【转】 https://bbs.huaweicloud.com/forum/thread-0296171007849327168-1-1.html  2.scala中正则表达式的使用详解【转】 https://bbs.huaweicloud.com/forum/thread-02119171007725887139-1-1.html  3.SpringBoot实现websocket服务端及客户端的详细过程【转】 https://bbs.huaweicloud.com/forum/thread-0217171007411153148-1-1.html  4.spring 参数校验Validation示例详解【转】 https://bbs.huaweicloud.com/forum/thread-02109171007351771185-1-1.html  5.java集成kafka实例代码【转】 https://bbs.huaweicloud.com/forum/thread-02112171007196458168-1-1.html  6.SpringBoot中Get请求和POST请求接收参数示例详解【转】 https://bbs.huaweicloud.com/forum/thread-02112171007106397167-1-1.html  7.Java中StopWatch工具类的用法详解【转】 https://bbs.huaweicloud.com/forum/thread-0263171006880471176-1-1.html  8.Linux下shell基本命令之grep用法及示例小结【转】 https://bbs.huaweicloud.com/forum/thread-02119170989547937131-1-1.html  9.Python使用PIL库拼接图片的详细教程【转】 https://bbs.huaweicloud.com/forum/thread-02119170989479126130-1-1.html  10.bash shell的条件语句详解【转】 https://bbs.huaweicloud.com/forum/thread-0217170989387999141-1-1.html  11.pandas数据缺失的两种处理办法【转】 https://bbs.huaweicloud.com/forum/thread-02112170989326183158-1-1.html  12.Python使用PyQt5实现中英文切换功能【转】 https://bbs.huaweicloud.com/forum/thread-0263170989204908173-1-1.html  13.python螺旋数字矩阵的实现示例【转】 https://bbs.huaweicloud.com/forum/thread-0241170989116650156-1-1.html  14.使用Python实现文件查重功能【转】 https://bbs.huaweicloud.com/forum/thread-02109170989032191180-1-1.html  15.Linux内核验证套件(LKVS) https://bbs.huaweicloud.com/forum/thread-0217170613884758126-1-1.html  16.三大排序算法：插入排序、希尔排序、选择排序 https://bbs.huaweicloud.com/forum/thread-0263170613042983158-1-1.html  17.【Linux】多用户协作-转载 https://bbs.huaweicloud.com/forum/thread-02109170612919963145-1-1.html  18.SSH可以连接但sftp确无法链接，有可能是防火墙的问题吗-转载 https://bbs.huaweicloud.com/forum/thread-0217170612856550125-1-1.html  19.【Linux】线程同步与互斥 (生产者消费者模型-转载 https://bbs.huaweicloud.com/forum/thread-02112170612824528138-1-1.html  20.【HarmonyOS】公司鸿蒙项目收工总结之《组件》 https://bbs.huaweicloud.com/forum/thread-0263170475389496136-1-1.html  21.【HarmonyOS】高仿华为阅读翻页 https://bbs.huaweicloud.com/forum/thread-02109170473860592128-1-1.html  22.【HarmonyOS】仿iOS线性渐变实现 https://bbs.huaweicloud.com/forum/thread-0241170473759150128-1-1.html  23.【HarmonyOS】利用emitter封装工具类 https://bbs.huaweicloud.com/forum/thread-0276170473613513148-1-1.html  24.【HarmonyOS】多Toast显示工具类 https://bbs.huaweicloud.com/forum/thread-0217170472563245114-1-1.html  25.【HarmonyOS】头像裁剪圆形遮罩效果实现demo https://bbs.huaweicloud.com/forum/thread-0276170472467118147-1-1.html