结合 JSONP 和 jQuery 快速构建强大的 mashup

http://www.ibm.com/developerworks/cn/web/wa-aj-jsonp1/

 

清单 7. 用 Java servlet 实现的 JSONP 服务

 

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) 
  throws ServletException, IOException {
	String jsonData = getDataAsJson(req.getParameter("symbol"));
	String output = req.getParameter("callback") + "(" + jsonData + ");";

	resp.setContentType("text/javascript");
          
	PrintWriter out = resp.getWriter();
	out.println(output);
	// prints: jsonp1232617941775({"symbol" : "IBM", "price" : "91.42"});
}