URL url = new URL("http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=oschina");
URLConnection connection = url.openConnection();
connection.addRequestProperty("Referer", "http://www.oschina.net/");

String line;
StringBuilder builder = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
while((line = reader.readLine()) != null) {
 builder.append(line);
}

JSONObject json = new JSONObject(builder.toString());
// now have some fun with the results...//源代码片段来自云代码http://yuncode.net