java mysql批量更新

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

public class BatchUpdateExample {
    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)) {
            conn.setAutoCommit(false);

            String sql = "UPDATE users SET status = ? WHERE id = ?";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                for (int i = 1; i <= 1000; i++) {
                    pstmt.setString(1, "active");
                    pstmt.setInt(2, i);
                    pstmt.addBatch();
                }

                int[] results = pstmt.executeBatch();
                conn.commit();

                System.out.println("Batch update completed. Rows affected: " + results.length);
            } catch (SQLException e) {
                conn.rollback();
                e.printStackTrace();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}