解決JavaScript跨域訪問的問題 - JSP代理

<%@ page language="java" pageEncoding="utf-8"%>
<%@ page language="java" import="java.io.*"%>
<%@ page language="java" import="java.net.*"%>
<%;
	String paramUrl = request.getParameter("paramUrl");
	String param = request.getParameter("param");
	param=URLEncoder.encode(param, "UTF-8");
	String strUrl=paramUrl + "?param=" + param;
	
	HttpURLConnection urlConnection = null;
	URL url = new URL(strUrl);
	urlConnection = (HttpURLConnection)url.openConnection();
	urlConnection.setRequestMethod("GET");
	urlConnection.setDoOutput(true);
	urlConnection.setDoInput(true);
	urlConnection.setUseCaches(false);
	
	InputStream in = urlConnection.getInputStream();
	BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in,"utf-8"));
	StringBuffer temp = new StringBuffer();
	String line = bufferedReader.readLine();
	 	while (line != null) {
		temp.append(line);
		line = bufferedReader.readLine();
	}
	bufferedReader.close();
%>