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

public class BaseDao {
    // 增删改方法
    public static int commonUpdate(String sql, Object... objs) {
        // 获得连接
        Connection connection = DbUtils.getConnection();
        int n = 0;

        try {
            // 获得执行者
            PreparedStatement preparedStatement = connection.prepareStatement(sql);
            // 填入参数
            for (int i = 0; i < objs.length; i++) {
                Object obj = objs[i];
                preparedStatement.setObject(i + 1, obj);
            }
            // 执行语句
            n = preparedStatement.executeUpdate();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        return n;
    }
}