mysql8设置远程连接数据库遇到的坑_class com.mysql.cj.jdbc.clientpreparedstatement] b

jdbc操作mysql8.0的坑

package com.vrv.test;
 
 
import java.sql.*;
 
public class JdbcTest {
   // 定义sql
   private static String sql = "SELECT stu_name FROM t_login ";
 
   public static void main(String[] args) throws SQLException {
// 连接对象
      Connection connection = null;
// 预编译对象 PreparedStatement
      PreparedStatement preparedStatement = null;
// 结果集
      ResultSet resultSet = null;
 
 
      try {
// 加载驱动
//       Class.forName("com.mysql.jdbc.Driver");
         Class.forName("com.mysql.cj.jdbc.Driver");
// 获取连接对象
         connection = (Connection) DriverManager.getConnection("jdbc:mysql://192.168.220.139:3306/teaching_manage?useSSL=false&serverTimezone=Asia/Shanghai", "root", "123456");
// 获取preparedStatement
         preparedStatement = (PreparedStatement) connection.prepareStatement(sql);
//
 执行sql语句，并返回结果集到resultSet中
         resultSet = preparedStatement.executeQuery();
 遍历结果集
         while (resultSet.next()) {
            String name = resultSet.getString(1);
            System.out.println(name);
         }
      } catch (Exception e) {
         e.printStackTrace();
      } finally {
         System.out.println("执行结束");
      }
   }
}