JDBC驱动

最近web学到了JDBC，于是需要用java连接MySQL，本来已经成功连接了，代码如下：
创建数据库、表，插入信息：

show databases ;
create database databaseForLesson;
use databaseForLesson;
CREATE TABLE STUDENTS
    (
          stud_id int(11) NOT NULL AUTO_INCREMENT,
          name varchar(50) NOT NULL,
          email varchar(50) NOT NULL,
          dob date DEFAULT NULL,
          PRIMARY KEY (stud_id)
          ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;
insert into students(stud_id,name,email,dob)
    values (1,'Student1','student1@gmail.com','1983-06-25');
    insert into students(stud_id,name,email,dob)
    values (2,'Student2','student2@gmail.com','1983-06-25');
select * from STUDENTS;

连接：

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Scr {
    String databaseName = "databaseForLesson";
    String user = "root";
    String pwd = "root";
    String URL;
    String DRIVER;

    public Scr() {
        this.URL = "jdbc:mysql://localhost:3306/" + this.databaseName + "?useSSL=false&serverTimezone=UTC";
        this.DRIVER = "com.mysql.cj.jdbc.Driver";
    }
    public static void main(String[] args) {
        Scr JdbcDemo = new Scr();
        JdbcDemo.connect();
    }
    public void connect() {
        Connection connection = null;
        Statement statement = null;
        try {
            Class.forName(this.DRIVER);
            connection = DriverManager.getConnection(this.URL, this.user, this.pwd);
            statement = connection.createStatement();
            String query = "SELECt * FROM students;";
            ResultSet resultSet = statement.executeQuery(query);
            while(resultSet.next()) {
                String dob = resultSet.getString("dob");
                String name = resultSet.getString("name");
                int id = resultSet.getInt("id");
                String email = resultSet.getString("email");
                System.out.println("id:"+id+",name: " + name +",age: " + dob + ",address: " + email);
            }
            resultSet.close();
            statement.close();
            connection.close();
        } catch (ClassNotFoundException | SQLException var16) {
            var16.printStackTrace();
        } finally {
            try {
                if (statement != null) {
                    statement.close();
                }
                if (connection != null) {
                    connection.close();
                }
            } catch (SQLException var15) {
                var15.printStackTrace();
            }
        }
    }
}

发生如下错误：

百度了很多，看了很多解决方法，大致就是驱动的问题，一开始下载了mysql-connector-java-5.1.25-bin.jar，发现还是不行，于是看了下我的MySQL版本是8，所以又去官网下载了最新的驱动mysql-connector-java-8.0.28.jar,再配置后得以解决。

下载驱动网址：MySQL驱动
得到如下页面：

选择zip文件，点击Download

点击thanks直接开始下载

将压缩包解压后得到一个内含如下文件的文件夹，其中.jar压缩包就是我们需要用到的

在IDEA中添加驱动包：File->Project Structure->Modules->Dependencies，然后添加驱动包
重新测试，运行成功！