/**
  * 微信全局票据 ---->>>> access_token
  * @return
  * @throws ClientProtocolException
  * @throws IOException
  */
 public String getBaseAccessToken() throws ClientProtocolException, IOException{ 
  try {
   String value = redisService.get("WEIXIN_BASE_ACCESS_TOKEN");
   if (!StringUtils.isEmpty(value)) {
    LOGGER.info("Get base access_token from redis is successful.value:{}",value);
    return value;
   }else{
    synchronized (this) {
     //缓存中没有、或已经失效
     String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+WX_APPID+"&secret="+ WX_APPSECRET;
     String rs = apiService.doGet(url);
     
     JSONObject obj_content = JSONObject.parseObject(rs);
     String accessToken = obj_content.getString("access_token");
     Integer time = Integer.parseInt(obj_content.getString("expires_in").toString());
     
     //写缓存
     redisService.set("WEIXIN_BASE_ACCESS_TOKEN", accessToken, time - 3600);
     LOGGER.info("Set base access_token to redis is successful.parameters time:{},realtime",time,time-3600);
     return accessToken;
    }
   }
  } catch (Exception e) {
   LOGGER.error("Get base access_token from redis is error.");
  }
  return null;
 }

  /**
  * jsapi_ticket是公众号用于调用微信JS接口的临时票据
  * @return
  * @throws IOException 
  * @throws ClientProtocolException 
  */
 public String getJsapiTicket() throws ClientProtocolException, IOException{
  try {
   String value = redisService.get("WEIXIN_JS_API_TICKET");
   if (!StringUtils.isEmpty(value)) {
    return value;
   }else{
    synchronized (this) {
     //缓存中没有、或已经失效
     //获取全局的access_token，唯一票据
     String accessToken = getBaseAccessToken();
     String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+ accessToken +"&type=jsapi";
     String rs = apiService.doGet(url);
     JSONObject obj_content = JSONObject.parseObject(rs);
     String jsapi_ticket = obj_content.getString("ticket");
     Integer time = Integer.parseInt(obj_content.getString("expires_in").toString());
     //写缓存
     redisService.set("WEIXIN_JS_API_TICKET", jsapi_ticket, time - 3600);
     return jsapi_ticket;
    }
   }
  } catch (Exception e) {
   LOGGER.error("Get js_api_ticket from redis is error:{}",e);
  }
  return null;
 }

  /**
  * 微信分享证书获取
  * @param 
  * @return signature
  * @throws IOException 
  */
 @RequestMapping(value = "/signature", method = RequestMethod.GET)
 public @ResponseBody String createSignature(
        @RequestParam String url) throws IOException{
  LOGGER.info("RestFul of createSignature parameters url:{}",url);
  try {
   String rs = wechatService.createSignature(url);
   LOGGER.info("RestFul of signature is successful.",rs);
   return rs;
  } catch (Exception e) {
   LOGGER.error("RestFul of signature is error.",e);
  }
  return null;
 }

 /**
  * 根据jsapi_ticket等参数进行SHA1加密
  * @param nonceStr 随机字符串
  * @param timestamp 当前时间戳
  * @param url 当前页面url
  */
 public String createSignature(String url) throws ClientProtocolException, IOException{
  String nonceStr = create_nonce_str();
  String timestamp = create_timestamp();
  
  String signature = "jsapi_ticket="+getJsapiTicket();
    signature += "&noncestr="+nonceStr;
    signature += "×tamp="+timestamp;
    signature += "&url="+url;
  try {
   MessageDigest crypt = MessageDigest.getInstance("SHA-1");
   crypt.reset();
   crypt.update(signature.getBytes("UTF-8"));
   signature = byteToHex(crypt.digest());
  } catch (Exception e) {
   LOGGER.error("Signature for SHA-1 is error:{}",e);
  }
  Map<String, String> map = new HashMap<String, String>();
  map.put("timestamp", timestamp);
  map.put("nonceStr", nonceStr);
  map.put("signature", signature);
  map.put("appid", WX_APPID);
  return JSON.toJSONString(map, true);
 }
 private static String byteToHex(final byte[] hash) {
  Formatter formatter = new Formatter();
  for (byte b : hash) {
   formatter.format("x", b);
  }
  String result = formatter.toString();
  formatter.close();
  return result;
 }

private static String create_nonce_str() {
  return UUID.randomUUID().toString();
 }

private static String create_timestamp() {
  return Long.toString(System.currentTimeMillis() / 1000);
 }

require.config({
 urlArgs: "v=20161116" ,
 baseUrl : "/static",
 paths: {
  jweixin: 'component/jweixin/jweixin-1.0.0',
  share: 'component/wechat/share'//微信分享组件
 }
})

//jsSDK授权
 $.signature = function(wx,opts,currentUrl,callback){
  $.ajax({
   data: {url: currentUrl},
   type: "GET",
   url: WX_ROOT + "wechat/signature",
   success: function (json) {
    if (json) {
     var data = JSON.parse(json); 
     wx.config({
      debug: false,
      appId: data.appid,
      timestamp: data.timestamp,
      nonceStr: data.nonceStr,
      signature: data.signature,
      jsApiList: [
       'onMenuShareTimeline',
       'onMenuShareAppMessage',
       'onMenuShareQQ',
       'onMenuShareWeibo',
       'onMenuShareQZone'
      ]
     });
     wechatShare.options.isSignature = true;
     callback && callback(opts,wx);
    }
   }
  });
 }

//分享
 $.share = function(opts,wx) {
  var options = {
    currentUrl: window.location.href.split('#')[0],
    imgUrl: null,
    title: '达农保险',
    desc: null,
    shareUrl: null
   }
  $.extend(true, options, opts || {});
  //判断是否已经授权
  if(!wechatShare.options.isSignature){
   $.signature(wx,opts,options.currentUrl,$.share)
  }else{
   wx.ready(function(){
    //分享到朋友圈
    wx.onMenuShareTimeline({
     title: options.title,
     link: options.shareUrl,
     imgUrl: options.imgUrl,
     success: function () {
      //分享统计，分享来源 1 朋友圈 2分享给朋友 3分享到QQ 4分享到QQ空间 
     }
    });
    //分享给朋友
    wx.onMenuShareAppMessage({
     title: options.title,
     desc: options.desc,
     link: options.shareUrl,
     imgUrl: options.imgUrl
    });
   });
  } 
 }

var ua = navigator.userAgent.toLowerCase(),
 isWechat = ua.indexOf('micromessenger') != -1;//判断是否为微信浏览器
var shareData = {
　　　　title: ‘测试分享',
　　　　desc: ‘这里是描述，分享到朋友圈不会显示',
　　　　link: APP_ROOT + '/base/downloadApp,//分享后打开的链接，必须在配置的安全域名下
　　　　imgUrl: PIC_PATH + (self.data.shareListData[0].imgSmall || '/static/img/coupon/getTicPic.png'),//分享后显示的图片
　　　　success: function(){
      setTimeout(function(){
　　　　　　　　　　　　　　//运营数据统计
　　　　　　　　　　　　　},0)//伪异步方式调用
     }
　　　　　　　　}
//微信浏览器分享加载
if(isWechat){
 require(['jweixin'],function(wx){
　　　　require(['share'],function(){
   $.share(shareData,wx);
　　　　})
　　})
}