String str="http://food.39.net/a/2012322/1995027.html";
        HttpClient client = new HttpClient();
        GetMethod method = new GetMethod(str);
        List<Header> headers = new ArrayList<Header>();  
        headers.add(new Header("Host","food.39.net"));
        headers.add(new Header("User-Agent","Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0)"));
        headers.add(new Header("Accept","*/*"));
        headers.add(new Header("Content-Type","application/x-www-form-urlencoded; charset=UTF-8"));
        headers.add(new Header("Connection","keep-alive"));
        client.getHostConfiguration().getParams().setParameter("http.default-headers", headers);   
        try {
            client.executeMethod(method);
            System.out.println(method.getResponseBodyAsString());
        } catch (HttpException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }