java使用代理访问网络

转自：/article/1425257.html

在使用java的net包访问网络时，如果需要使用代理，可以这样做：

System.getProperties().setProperty("proxySet", "true");

System.getProperties().setProperty("http.proxyHost", "183.121.23.188");

System.getProperties().setProperty("http.proxyPort", "8080");

URL url = new URL(http://www.163.com);

HttpURLConnection httpConn = (HttpURLConnection)url.openConnection();

HttpURLConnection.setFollowRedirects(true);

httpConn.setRequestMethod("GET");

httpConn.setRequestProperty("User-Agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows 2000)");

InputStream in = httpConn.getInputStream();

BufferedReader myBufferedReader=new BufferedReader(new InputStreamReader(in));

String myString=null;

while((myString=myBufferedReader.readLine())!=null){

System.out.println(myString);

}

其中，前三行就是设置代理的语句。