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1.set 1. An unordered and unique set of string elements sadd key member1 [member2]: add multiple members Scar key: count members sdiff key1 [key2]: find out the difference set of two sets, the members that key2 does not have in key1 sidffstore des key1 [key2]: save the difference set to the des ...

Using IK word breakers Integrated ik word breaker https://mp.csdn.net/postedit/93602713 Entity class PosEntity /** Omit getter and setter*/ class PosEntity{ private Integer posId; private String posName; private String posAddress; } In entity class, posName and posAddress are both used as Chinese fields, a ...

https://www.jianshu.com/p/b0253de8ac04 This is an article about three popular skin changing schemes. It's very good, but it's not suitable. Here's the way I think about it and happen to produce it: The first is about text color change of TextView: Because our APP uses one font in a unified way, the customized TextVie ...

Struts upload picture Today, I have finished the image upload and page display of the last blog. File upload scheme: Upload to tomcat server Upload to the specified file directory, add the mapping relationship between the server and the real directory, so as to decouple the relationship between the u ...

Hello, everyone, little brother, today, I want to talk to you about an interesting topic, which is to use WeChat Boot to develop the background of WeChat public address. Many little friends may notice SongGe's personal website( http://www.javaboy.org A few days ago, the function of unlocking the website articles was released on a public address ...

brief introduction This tutorial is written in the thinking mode of WHAT-what-HOW Golden Circle. The Golden Circle principle emphasizes learning from WHY to WHAT to learn and HOW to learn. From fuzzy to clear learning mode. Everyone's time is very precious. Before we do something, we should first think about WHY we should do it and WHAT kind o ...

                                  Global primary key auto increment I. self increasing method of local files            &e ...

  in this paper, we will introduce the operation of MyCat's sub database and sub table. Sub library table I. Introduction to segmentation rules       various segmentation rules supported by myCat are defined in rule.xml. Mod long Sharding by month Sharding by date Splitting by hour Range agreement: plan ...

eclipse builds maven+ssm Create a maven project Create a good directory structure Solve this small error report Modify the corresponding Tomcat version The directory of maven project is org.eclipse.wst.common.project.facet.core.xml. Just change the version of jdt.web to the version corresponding to ...

Preface The web.xml file has been removed from Spring Boot. If you need to register and add Servlet, Filter and Listener as Spring Bean, there are two ways in Spring Boot: Annotation @ WebServlet, @ WebFilter, @Listener Used to configure. Spring Boot JavaConfig annotation is used to configure the Bean. Before registration When using Servlet, ...