Mysql8.0的JDBC连接配置

xml文件  一定要使用与  mysql8.0   相对于的   connect jar   包
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
jdbc.username=root
jdbc.password=root

实例

package itheima;


import java.sql.*;

public class JdbcTest {
public static void main(String[] args) {
    Connection connection = null;
    PreparedStatement preparedStatement = null;
    ResultSet resultSet = null;

    try {
        // 加载数据库驱动
        Class.forName("com.mysql.cj.jdbc.Driver");

        // 通过驱动管理类获取数据库链接
        connection = DriverManager.getConnection
                ("jdbc:mysql://localhost:3306/bank?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true", "root", "root");
        // 定义sql语句 ?表示占位符
        String sql = "insert into account values (null , 'xilali' , 10)";

        // 获取预处理statement
        preparedStatement = connection.prepareStatement(sql);
        preparedStatement.executeUpdate();
        // 设置参数,第一个参数为sql语句中参数的序号(从1开始),第二个参数为设置的参数值
        //preparedStatement.setString(1, "王五");

      //  preparedStatement.setString(1, "%王%");
        // 向数据库发出sql执行查询,查询出结果集
        /*resultSet = preparedStatement.executeQuery();
        // 遍历查询结果集
        while (resultSet.next()) {
            System.out.println(resultSet.getString("id") + "  " + resultSet.getString("name"));
        }*/
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        // 释放资源
        if (resultSet != null) {
            try {
                resultSet.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        if (preparedStatement != null) {
            try {
                preparedStatement.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        if (connection != null) {
            try {
                connection.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}

}

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转载自blog.csdn.net/qq_42664961/article/details/84669631