怎么给一个泛型入参限定两种可能性

Question

public static final String httpsRead(
        final URL url, 
        final String urlMethod, 
        final Map<String, String> requestProperty, 
        final Map<String, String[]> urlParam) {
    return httpsRead(url, urlMethod, requestProperty, urlParamToString(urlParam));
}

Answer 1

用可变参数，..String