</project>
db.properties
mysql.driver = com.mysql.cj.jdbc.Driver
mysql.url = jdbc:mysql://localhost:3306/db_fjp?serverTimezone=UTC&\
characterEncoding=utf8&useUnicode=true&useSSL=false
mysql.username = root
mysql.password = 2015391635q
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!--
用于配置环境和与数据库建立连接
-->
<properties resource="db.properties"/>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="${mysql.driver}"/>
<property name="url" value="${mysql.url}"/>
<property name="username" value="${mysql.username}"/>
<property name="password" value="${mysql.password}"/>
</dataSource>
</environment>
</environments>
<!--
用于加载映射文件，不加载的话将无法识别
-->
<mappers>
<mapper resource="mapper/UserMapper.xml"/>
</mappers>
</configuration>
Students.java
package com.itheima.pojo;
public class Students {
private int id;
private String name;
private int age;
