Convert a HttpURLConnection to a cURL command

gistfile1.java

public static String toCurlRequest(HttpURLConnection connection, byte[] body) {
    StringBuilder builder = new StringBuilder("curl -v ");

    // Method
    builder.append("-X ").append(connection.getRequestMethod()).append(" \\\n  ");

    // Headers
    for (Entry<String, List<String>> entry : connection.getRequestProperties().entrySet()) {
        builder.append("-H \"").append(entry.getKey()).append(":");
        for (String value : entry.getValue())
            builder.append(" ").append(value);
        builder.append("\" \\\n  ");
    }

    // Body
    if (body != null)
        builder.append("-d '").append(new String(body)).append("' \\\n  ");

    // URL
    builder.append("\"").append(connection.getURL()).append("\"");

    return builder.toString();
}