如何检查ResultSet中是否存在字段？

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;

public class ResultSetChecker {
    public static boolean isFieldExist(ResultSet resultSet, String fieldName) throws SQLException {
        ResultSetMetaData metaData = resultSet.getMetaData();
        int columnCount = metaData.getColumnCount();
        
        for (int i = 1; i <= columnCount; i++) {
            String columnName = metaData.getColumnName(i);
            if (columnName.equalsIgnoreCase(fieldName)) {
                return true;
            }
        }
        
        return false;
    }
}