HttpParametersUtils.java

package com.badlogic.gdx;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Map;
import java.util.Set;

import com.badlogic.gdx.Net.HttpRequest;

/** Provides utility methods to work with the {@link HttpRequest} content and parameters. */
public class HttpParametersUtils {

	public static String defaultEncoding = "UTF-8";
	public static String nameValueSeparator = "=";
	public static String parameterSeparator = "&";

	/**
	 * Useful method to convert a map of key,value pairs to a String to be used as part of a GET or POST content.
	 * 
	 * @param parameters
	 *            A Map<String, String> with the parameters to encode.
	 * @return The String with the parameters encoded.
	 */
	public static String convertHttpParameters(Map<String, String> parameters) {
		Set<String> keySet = parameters.keySet();
		StringBuffer convertedParameters = new StringBuffer();
		for (String name : keySet) {
			convertedParameters.append(encode(name, defaultEncoding));
			convertedParameters.append(nameValueSeparator);
			convertedParameters.append(encode(parameters.get(name), defaultEncoding));
			convertedParameters.append(parameterSeparator);
		}
		if (convertedParameters.length() > 0)
			convertedParameters.deleteCharAt(convertedParameters.length() - 1);
		return convertedParameters.toString();
	}

	private static String encode(String content, String encoding) {
		try {
			return URLEncoder.encode(content, encoding);
		} catch (UnsupportedEncodingException e) {
			throw new IllegalArgumentException(e);
		}
	}
}