Post.java

/*
 * Sentiment Analysis 1.0 sample client for Java
 * (c) Daedalus
 */
package com.meaningcloud.gate;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.logging.Level;
import java.util.logging.Logger;

public class Post {
	private URL url;
	String params;
	int TIMEOUT_VALUE = 0;// 120000;

	public Post(String api) throws MalformedURLException {
		url = new URL(api);
		params = "";
	}

	public void addParameter(String name, String value)
			throws UnsupportedEncodingException {
		// codificamos cada uno de los valores
		if (params.length() > 0)
			params += "&" + URLEncoder.encode(name, "UTF-8") + "="
					+ URLEncoder.encode(value, "UTF-8");
		else
			params += URLEncoder.encode(name, "UTF-8") + "="
					+ URLEncoder.encode(value, "UTF-8");
	}

	public String getResponse() throws IOException {
		String response = "";
		HttpURLConnection conn = (HttpURLConnection) url.openConnection();
		conn.setDoOutput(true);
		conn.setConnectTimeout(TIMEOUT_VALUE);
		conn.setReadTimeout(TIMEOUT_VALUE);
		conn.setInstanceFollowRedirects(false);
		conn.setRequestProperty("Accept-Charset", "utf-8");
		conn.setRequestProperty("Content-Type",
				"application/x-www-form-urlencoded");
		conn.setRequestProperty("charset", "utf-8");
		conn.setRequestMethod("POST");
		conn.setUseCaches(false);
		conn.setRequestProperty("Content-Length",
				"" + Integer.toString(params.getBytes().length));
		try {
			OutputStreamWriter wr = new OutputStreamWriter(
					conn.getOutputStream());
			wr.write(params);
			wr.flush();

			if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
				Logger.getLogger(Post.class.getName()).log(Level.SEVERE,
						"HTTP Code: " + conn.getResponseCode());
				if (conn.getResponseCode() == HttpURLConnection.HTTP_GATEWAY_TIMEOUT)
					Logger.getLogger(Post.class.getName()).log(
							Level.SEVERE,
							"Exceded Connection: " + conn.getConnectTimeout()
									+ " or Read: " + conn.getReadTimeout()
									+ " time");
			}

			BufferedReader rd = new BufferedReader(new InputStreamReader(
					conn.getInputStream()));
			String line;
			while ((line = rd.readLine()) != null) {
				response += line;
			}
		} catch (Exception e) {
			Logger.getLogger(Post.class.getName()).log(Level.SEVERE,
					"Error: " + e.getMessage());
		}
		conn.disconnect();
		return response;
	}
}