idea maven first mybatis program

Idea: Build a database -> create a maven project -> import mybatis -> write code -> test

Build 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=utf8;

INSERT INTO `user`(`id`,`name`,`pwd`) VALUES 
(1,'狂神','123456'),
(2,'张三','123456'),
(3,'李四','123890')

Create a normal maven project

• new project—>next
  
  name: project name
  location: project directory
• finish
• file----->setting
• 
  
  

Delete src

Import maven dependencies

new module

• Write core configuration files
  
• Write mybatis tool class
  
• Writing entity classes
  
• dao interface
  
• Interface implementation class
  
• The mapper is registered
  in the core configuration file
  

test

• junit test
  

Finally successfully found the data