mysql如何打开批处理

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class BatchProcessingExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            String sql = "INSERT INTO users (name, email) VALUES (?, ?)";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                // 添加多条记录到批处理
                pstmt.setString(1, "Alice");
                pstmt.setString(2, "alice@example.com");
                pstmt.addBatch();

                pstmt.setString(1, "Bob");
                pstmt.setString(2, "bob@example.com");
                pstmt.addBatch();

                pstmt.setString(1, "Charlie");
                pstmt.setString(2, "charlie@example.com");
                pstmt.addBatch();

                // 执行批处理
                int[] results = pstmt.executeBatch();
                System.out.println("Batch processing completed. Rows affected: " + results.length);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}