mysql与myeclipse连接数据库

import java.sql.*;

public class MySQLConnectionExample {
    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        ResultSet rs = null;
        
        try {
            // 加载MySQL JDBC驱动
            Class.forName("com.mysql.jdbc.Driver");
            
            // 建立数据库连接
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/数据库名称", "用户名", "密码");
            
            // 创建Statement对象
            stmt = conn.createStatement();
            
            // 执行SQL查询
            rs = stmt.executeQuery("SELECT * FROM 表名");
            
            // 处理查询结果
            while (rs.next()) {
                String column1 = rs.getString("列名1");
                String column2 = rs.getString("列名2");
                // ...
                System.out.println(column1 + " - " + column2);
            }
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭资源
            try {
                if (rs != null) {
                    rs.close();
                }
                if (stmt != null) {
                    stmt.close();
                }
                if (conn != null) {
                    conn.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}