package api.util;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Map;
import javax.net.ssl.HttpsURLConnection;
public class HttpUtil {
private static String USER_AGENT = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; customie8)";
// HTTP GET request
public static String sendGet(String url, String charset) throws Exception {
URL realurl = new URL(url);
HttpURLConnection con = (HttpURLConnection) realurl.openConnection();
// optional default is GET
con.setRequestMethod("GET");
// add request header
con.setRequestProperty("User-Agent", USER_AGENT);
// int responseCode = con.getResponseCode();
// System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(), charset));
String inputLine;
StringBuffer result = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
result.append(inputLine);
result.append("\r\n");
}
in.close();
con.disconnect();
return result.toString();
}
// HTTP POST request
@SuppressWarnings("deprecation")
public static String sendPost(String url, Map<String, String> param, String charset) throws Exception {
URL realurl = new URL(url);
HttpsURLConnection con = (HttpsURLConnection) realurl.openConnection();
con.setRequestMethod("POST");
// add reuqest header
con.setRequestProperty("User-Agent", USER_AGENT);
// con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
// String urlParameters =
// "sn=C02G8416DRJM&cn=&locale=&caller=&num=12345";
StringBuffer buffer = new StringBuffer();
if (param != null && !param.isEmpty()) {
for (Map.Entry<String, String> entry : param.entrySet()) {
buffer.append(entry.getKey()).append("=").append(URLEncoder.encode(entry.getValue(), charset))
.append("&");
}
}
buffer.deleteCharAt(buffer.length() - 1);
// Send post request
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(buffer.toString());
wr.flush();
wr.close();
// int responseCode = con.getResponseCode();
// System.out.println("Post parameters : " + urlParameters);
// System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(), charset));
String inputLine;
StringBuffer result = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
result.append(inputLine);
result.append("\r\n");
}
in.close();
con.disconnect();
return result.toString();
}
} 
