mysql java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); // 关闭自动提交

            String sql = "UPDATE users SET status = ? WHERE id = ?";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                for (int i = 0; i < 1000; i++) {
                    pstmt.setString(1, "active");
                    pstmt.setInt(2, i);
                    pstmt.addBatch(); // 添加到批处理
                }

                int[] results = pstmt.executeBatch(); // 执行批处理
                conn.commit(); // 提交事务

                System.out.println("批量更新完成，影响的行数: " + results.length);
            } catch (SQLException e) {
                conn.rollback(); // 回滚事务
                e.printStackTrace();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}