mybatis-plus无spring框架

正在做网络编程课设,打算把mybatis-plus缝合进去,然后使用springboot缝合不能用mybatis-plus,然后我找了很久,找到了mybatis-plus在gitee上放的无spring使用方式:
官方地址:https://gitee.com/baomidou/mybatis-plus-samples/tree/master/mybatis-plus-sample-no-spring
自己平民化之后的通用代码地址:
https://github.com/like-wen/mybatis-plus-only.git
但是官方使用案例用的h2当数据库连接的启动,我的示例在此之上改变了:
1.改成了常用的mysql-connector-java
2.添加了mapper.xml
主要这几个文件:

测试插入结果:

主要代码:

依赖:

 <dependencies><!-- 导入mybatis-plus相关依赖 --><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus</artifactId><version>3.5.2</version></dependency><!-- 引入lombok --><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.24</version><scope>provided</scope></dependency><!-- 数据库驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.30</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.3.23</version></dependency></dependencies>

//User之类的是用插件MybatisX生成的,会用的可以直接生成
User

package org.example.entity;import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import java.io.Serializable;
import java.util.Date;
import lombok.Data;/*** * @TableName user*/
@TableName(value ="user")
@Data
public class User implements Serializable {/*** */@TableId(type = IdType.AUTO)private Integer id;/*** */private String name;/*** */private String password;/*** */private Date onlineTime;/*** */private Date createTime;@TableField(exist = false)private static final long serialVersionUID = 1L;@Overridepublic boolean equals(Object that) {if (this == that) {return true;}if (that == null) {return false;}if (getClass() != that.getClass()) {return false;}User other = (User) that;return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId()))&& (this.getName() == null ? other.getName() == null : this.getName().equals(other.getName()))&& (this.getPassword() == null ? other.getPassword() == null : this.getPassword().equals(other.getPassword()))&& (this.getOnlineTime() == null ? other.getOnlineTime() == null : this.getOnlineTime().equals(other.getOnlineTime()))&& (this.getCreateTime() == null ? other.getCreateTime() == null : this.getCreateTime().equals(other.getCreateTime()));}@Overridepublic int hashCode() {final int prime = 31;int result = 1;result = prime * result + ((getId() == null) ? 0 : getId().hashCode());result = prime * result + ((getName() == null) ? 0 : getName().hashCode());result = prime * result + ((getPassword() == null) ? 0 : getPassword().hashCode());result = prime * result + ((getOnlineTime() == null) ? 0 : getOnlineTime().hashCode());result = prime * result + ((getCreateTime() == null) ? 0 : getCreateTime().hashCode());return result;}@Overridepublic String toString() {StringBuilder sb = new StringBuilder();sb.append(getClass().getSimpleName());sb.append(" [");sb.append("Hash = ").append(hashCode());sb.append(", id=").append(id);sb.append(", name=").append(name);sb.append(", password=").append(password);sb.append(", onlineTime=").append(onlineTime);sb.append(", createTime=").append(createTime);sb.append(", serialVersionUID=").append(serialVersionUID);sb.append("]");return sb.toString();}
}

UserMapper

package org.example.mapper;import org.example.entity.User;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;/**
* @author 李可文
* @description 针对表【user】的数据库操作Mapper
* @createDate 2022-12-02 20:29:17
* @Entity org.example.entity.User
*/
public interface UserMapper extends BaseMapper<User> {}

NoSpring

package org.example;import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;import javax.sql.DataSource;import org.apache.ibatis.logging.stdout.StdOutImpl;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.example.entity.User;
import org.example.mapper.UserMapper;
import org.springframework.jdbc.datasource.SimpleDriverDataSource;import com.baomidou.mybatisplus.core.MybatisConfiguration;
import com.baomidou.mybatisplus.core.MybatisSqlSessionFactoryBuilder;public class NoSpring {private static SqlSessionFactory sqlSessionFactory = initSqlSessionFactory();public static void main(String[] args) {//初始化try (SqlSession session = sqlSessionFactory.openSession(true)) {//创建mapper对象UserMapper mapper = session.getMapper(UserMapper.class);//创建user对象,并赋值User user = new User();user.setPassword("123");user.setName("lkw");//插入mapper.insert(user);System.out.println("结果: " + mapper.selectById(user.getId()));}}//工厂方法public static SqlSessionFactory initSqlSessionFactory() {DataSource dataSource = dataSource();TransactionFactory transactionFactory = new JdbcTransactionFactory();Environment environment = new Environment("Production", transactionFactory, dataSource);MybatisConfiguration configuration = new MybatisConfiguration(environment);//在这里添加Mapperconfiguration.addMapper(UserMapper.class);configuration.setLogImpl(StdOutImpl.class);return new MybatisSqlSessionFactoryBuilder().build(configuration);}//连接进行public static DataSource dataSource() {SimpleDriverDataSource dataSource = new SimpleDriverDataSource();dataSource.setDriverClass(com.mysql.jdbc.Driver.class);dataSource.setUrl("jdbc:mysql://localhost:3306/course?serverTimezone=GMT%2B8");dataSource.setUsername("root");dataSource.setPassword("148963");return dataSource;}}

UserMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.example.mapper.UserMapper"><resultMap id="BaseResultMap" type="org.example.entity.User"><id property="id" column="id" jdbcType="INTEGER"/><result property="name" column="name" jdbcType="VARCHAR"/><result property="password" column="password" jdbcType="VARCHAR"/><result property="onlineTime" column="online_time" jdbcType="TIMESTAMP"/><result property="createTime" column="create_time" jdbcType="TIMESTAMP"/></resultMap><sql id="Base_Column_List">id,name,password,online_time,create_time</sql>
</mapper>

sql

/*Navicat Premium Data TransferSource Server         : mysqlSource Server Type    : MySQLSource Server Version : 80029Source Host           : localhost:3306Source Schema         : courseTarget Server Type    : MySQLTarget Server Version : 80029File Encoding         : 65001Date: 02/12/2022 22:05:01
*/SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`  (`id` int NOT NULL AUTO_INCREMENT,`name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,`password` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci NULL DEFAULT NULL,`online_time` datetime NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,`create_time` datetime NULL DEFAULT NULL,PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_0900_ai_ci ROW_FORMAT = DYNAMIC;-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES (1, 'wl', 'wl', '2022-11-09 21:56:23', '2022-11-09 21:56:03');
INSERT INTO `user` VALUES (2, 'gmh', 'gmh', '2022-11-09 21:56:26', '2022-11-09 21:56:08');
INSERT INTO `user` VALUES (3, 'lkw', 'lkw', '2022-11-09 21:56:28', '2022-11-09 21:56:11');
INSERT INTO `user` VALUES (4, 'xy', 'xy', '2022-11-09 21:56:32', '2022-11-09 21:56:14');
INSERT INTO `user` VALUES (6, 'lkw', NULL, NULL, NULL);
INSERT INTO `user` VALUES (7, 'lkw', '123', NULL, NULL);
INSERT INTO `user` VALUES (8, 'lkw', '123', NULL, NULL);SET FOREIGN_KEY_CHECKS = 1;

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