mysql java批量更新数据

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)) {
                // 添加批量更新语句
                pstmt.setString(1, "active");
                pstmt.setInt(2, 1);
                pstmt.addBatch();

                pstmt.setString(1, "inactive");
                pstmt.setInt(2, 2);
                pstmt.addBatch();

                pstmt.setString(1, "pending");
                pstmt.setInt(2, 3);
                pstmt.addBatch();

                // 执行批量更新
                int[] results = pstmt.executeBatch();
                conn.commit(); // 提交事务

                System.out.println("批量更新结果: " + results.length + " 条记录被更新");
            } catch (SQLException e) {
                conn.rollback(); // 回滚事务
                e.printStackTrace();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}