package sdk.java.web;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.InetSocketAddress;

import java.net.Proxy;

import java.net.URL;

public class HttpRequest {

public static void main(String[] args) throws Exception {

sendGet();

}

// HTTP GET request

public static void sendGet() throws Exception {

String url = "http://www.naver.com";

// Proxy 클래스 이용

// Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("주소", 포트));

// URL obj = new URL(url);

// HttpURLConnection con = (HttpURLConnection) obj.openConnection(proxy);

// 시스템 프로퍼티 이용 

System.setProperty("http.proxyHost", "주소");

System.setProperty("http.proxyPort", "포트");

URL obj = new URL(url);

HttpURLConnection con = (HttpURLConnection) obj.openConnection();

// optional default is GET

con.setRequestMethod("GET");

// add request header

con.setRequestProperty("User-Agent", "Mozilla/5.0");

int responseCode = con.getResponseCode();

System.out.println("\nSending 'GET' request to URL : " + url);

System.out.println("Response Code : " + responseCode);

BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8"));

String inputLine;

StringBuffer response = new StringBuffer();

while ((inputLine = in.readLine()) != null) {

response.append(inputLine).append(System.lineSeparator());

}

in.close();

// print result

System.out.println(response.toString());

}

}

http://stackoverflow.com/questions/7482748/how-to-add-proxy-support-to-jsoup-html-parser