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A personal email website (built based on SpringBoot environment) At present, you can only send some simple content. If you have any good suggestions, you can comment!! I am still studying Source address: https://gitee.com/mehao123/sendMail/tree/master effect Main interface before login Login interface Main interface after login Se ...

          The key to integrating SSM is the configuration of several xml get ready: 　　1.　    Idea (after tomcat is configured, the plug-in freeMybatis can be installed to improve efficiency. It's not difficult to install plug-ins. Baidu experience has it) 　　2.     Download MySql database and visual m ...

Comparison class introduce Under normal circumstances, objects in Java can only be compared: = = or! =, Comparison of > or < is not possible. However, in the development scenario, we need to sort multiple objects, that is, we need to compare the size of objects. How to implement: you need either of the two interfaces: Comparable or Co ...

Preface: Hello, ladies and gentlemen, I'm running like a snail rz. Of course you can call me Snail Jun. I'm a beginner who has studied Java for more than half a year. At the same time, I have a great dream that I will become an excellent Java architect one day. This Mybatis Basic Learning series is used to record the whole process of ...

container A Collection, also known as a Collection, is used to hold and manage data. 1. Singleton set 1.1 concept Singleton set: store data one by one. Collection interface: it is the root interface of a singleton collection and has two sub interfaces. It is divided into List interface (orderly storage, repeatable, "dynamic" arra ...

1, Install Maven Installation path: click the link to download the required version directly Maven official website 1, Download method of the latest version 1. Click the link to enter Maven's official website 2. Find Download Files in the left column to Download 2, Download methods of all versions (including new and old versions ...

1, Review Following the last "dynamic header easyExcel import and export"( https://blog.csdn.net/qq_37337660/article/details/114680512)"， And the last dynamic header import( https://blog.csdn.net/qq_37337660/article/details/110288393 )”After that. We have a third wave easyExcel Torture, this time export complex Excel, by the w ...

1, Definition of inner class You can put the definition of one class inside the definition of another class, which is the inner class. 2, Type of inner class In Java, inner classes are mainly divided into member inner classes, local inner classes, anonymous inner classes and static inner classes. 1. Member internal class Member interna ...

preface: Hello, guys, I'm running snail rz. Of course, you can call me snail Jun. I'm a rookie who has studied Java for more than half a year. At the same time, I also have a great dream, that is, to become an excellent Java Architect one day. This SpringBoot basic learning series is used to record the whole process of learning the ...

set up a database create database 'mybatis' use 'mybatis'; create table 'user'( 'id' int(20) not null primary key, 'name' varchar(30) default null, 'pwd' varchar(30) default null )engine = innodb default charset= utf-8; insert into 'user'('id','name','pwd') values (1,'Mad God','123456'), (2,'Mad God','123456'), (3,'Mad God','123456'); // ...