微信根據 accessToken 獲取 JsApiTicket

private static final Logger LOGGER = Logger.getLogger(XXX.class);

/**
     * 獲取jsapi_ticket
     *
     * @return
     */
    public static Map<String, String> getJsApiTicket(String accessToken) {
        Map<String, String> data = new HashMap();
        String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + accessToken + "&type=jsapi";
        LOGGER.info("request user info from url: {" + url + "}");
        JsonObject jsApiTicket = null;
        try {
            DefaultHttpClient httpClient = new DefaultHttpClient();
            HttpGet httpGet = new HttpGet(url);
            HttpResponse httpResponse = httpClient.execute(httpGet);
            HttpEntity httpEntity = httpResponse.getEntity();
            String response = EntityUtils.toString(httpEntity, "utf-8");
            Gson token_gson = new Gson();
            jsApiTicket = token_gson.fromJson(response, JsonObject.class);
            LOGGER.info("get accessTokenInfo success. [result={" + jsApiTicket + "}]");
            data.put("ticket", jsApiTicket.get("ticket").toString().replaceAll("\"", ""));
            data.put("expires_in", jsApiTicket.get("expires_in").toString().replaceAll("\"", ""));
        } catch (Exception ex) {
            LOGGER.error("fail to request wechat user info. [error={" + ex + "}]");
        }
        return data;
    }