java导出mysql文件怎么打开

import java.io.*;
import java.sql.*;

public class ExportToCSV {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";
        String tableName = "mytable";
        String csvFilePath = "output.csv";

        try (Connection conn = DriverManager.getConnection(url, user, password);
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery("SELECT * FROM " + tableName)) {

            BufferedWriter bw = new BufferedWriter(new FileWriter(csvFilePath));
            ResultSetMetaData metaData = rs.getMetaData();
            int columnCount = metaData.getColumnCount();

            // 写入列名
            for (int i = 1; i <= columnCount; i++) {
                if (i > 1) bw.write(",");
                bw.write(metaData.getColumnName(i));
            }
            bw.newLine();

            // 写入数据
            while (rs.next()) {
                for (int i = 1; i <= columnCount; i++) {
                    if (i > 1) bw.write(",");
                    bw.write(rs.getString(i));
                }
                bw.newLine();
            }

            bw.close();
            System.out.println("Data exported to " + csvFilePath);

        } catch (SQLException | IOException e) {
            e.printStackTrace();
        }
    }
}

BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(csvFilePath), "UTF-8"));