About the implementation code of WeChat's custom sharing function

# 获取access_token请求地址
  getAccessTokenUrl: https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s
  #获取accessToken
  getAccessTokenOAuthUrl: https://api.weixin.qq.com/sns/oauth2/access_token?appid=%s&secret=%s&code=%s&grant_type=authorization_code
  # 获取用户基本信息请求地址
  getUserInfoUrl: https://api.weixin.qq.com/sns/userinfo?access_token=%s&openid=%s&lang=zh_CN
  #获取code
  getCodeUrl: https://open.weixin.qq.com/connect/oauth2/authorize?appid=%s&redirect_uri=%s&response_type=%s&scope=%s&state=%s#wechat_redirect
  #获取ticket
  getTicketUrl: https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=%s&type=jsapi

/**
     * 微信配置信息实体
     */
    @Autowired
    private WeiXinProperties weiXinProperties;
    //微信参数
    private String accessToken;
    private String jsApiTicket;
    //获取参数的时刻
    private Long getTiketTime = 0L;
    private Long getTokenTime = 0L;
    //参数的有效时间,单位是秒(s)
    private Long tokenExpireTime = 0L;
    private Long ticketExpireTime = 0L;

 /**
     * 微信自定义分享
     */
    @RequestMapping(value = "/getShareInfo", method = RequestMethod.POST)
    public Map<String, String> getShareInfo(HttpServletRequest request,
                                            HttpServletResponse response, String url) {
        //当前时间
        long now = System.currentTimeMillis();

        //判断accessToken是否已经存在或者token是否过期
        if (StringUtils.isBlank(accessToken) || (now - getTokenTime > tokenExpireTime * 1000)) {
            JSONObject tokenInfo = getAccessToken();
            if (tokenInfo != null) {
                accessToken = tokenInfo.getString("access_token");
                tokenExpireTime = tokenInfo.getLongValue("expires_in");
                //获取token的时间
                getTokenTime = System.currentTimeMillis();
                log.info("accessToken====>" + accessToken);
                log.info("tokenExpireTime====>" + tokenExpireTime + "s");
                log.info("getTokenTime====>" + getTokenTime + "ms");
            } else {
                log.info("====>tokenInfo is null~");
                log.info("====>failure of getting tokenInfo,please do some check~");
            }
        }
        //判断jsApiTicket是否已经存在或者是否过期
        if (StringUtils.isBlank(jsApiTicket) || (now - getTiketTime > ticketExpireTime * 1000)) {
            JSONObject ticketInfo = getJsApiTicket(accessToken);
            if (ticketInfo != null) {
                log.info("ticketInfo====>" + ticketInfo.toJSONString());
                jsApiTicket = ticketInfo.getString("ticket");
                ticketExpireTime = ticketInfo.getLongValue("expires_in");
                getTiketTime = System.currentTimeMillis();
                log.info("jsApiTicket====>" + jsApiTicket);
                log.info("ticketExpireTime====>" + ticketExpireTime + "s");
                log.info("getTiketTime====>" + getTiketTime + "ms");
            } else {
                log.info("====>ticketInfo is null~");
                log.info("====>failure of getting tokenInfo,please do some check~");
            }
        }
        //生成微信权限验证的参数
        Map<String, String> wechatParam = makeWXTicket(jsApiTicket, url);
        return wechatParam;

    }

    //获取accessToken
    private JSONObject getAccessToken() {
        //String accessTokenUrl = https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET
        //获取微信端的accessToken
        String requestUrl = String.format(weiXinProperties.getGetAccessTokenUrl(), weiXinProperties.getAppId(), weiXinProperties.getAppSecret());
        String result = send(requestUrl);
        JSONObject jsonObject = JSON.parseObject(result);
        return jsonObject;
    }

    //获取ticket
    private JSONObject getJsApiTicket(String access_token) {
        //String apiTicketUrl = https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=ACCESS_TOKEN&type=jsapi
        // 通过acessToken 获取ticket
        String requestUrl = String.format(weiXinProperties.getGetTicketUrl(), access_token);
        String result = send(requestUrl);
        JSONObject jsonObject = JSON.parseObject(result);
        return jsonObject;
    }

    //生成微信权限验证的参数
    public Map<String, String> makeWXTicket(String jsApiTicket, String url) {
        Map<String, String> ret = new HashMap<String, String>();
        String nonceStr = createNonceStr();
        String timestamp = createTimestamp();
        String string1;
        String signature = "";

        //注意这里参数名必须全部小写，且必须有序
        string1 = "jsapi_ticket=" + jsApiTicket +
                "&noncestr=" + nonceStr +
                "&timestamp=" + timestamp +
                "&url=" + url;
        log.info("String1=====>" + string1);
        try {
            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
            crypt.reset();
            crypt.update(string1.getBytes("UTF-8"));
            signature = byteToHex(crypt.digest());
            log.info("signature=====>" + signature);
        } catch (NoSuchAlgorithmException e) {
            log.error("WeChatController.makeWXTicket=====Start");
            log.error(e.getMessage(), e);
            log.error("WeChatController.makeWXTicket=====End");
        } catch (UnsupportedEncodingException e) {
            log.error("WeChatController.makeWXTicket=====Start");
            log.error(e.getMessage(), e);
            log.error("WeChatController.makeWXTicket=====End");
        }

        ret.put("url", url);
        ret.put("jsapi_ticket", jsApiTicket);
        ret.put("nonceStr", nonceStr);
        ret.put("timestamp", timestamp);
        ret.put("signature", signature);
        ret.put("appid", weiXinProperties.getAppId());

        return ret;
    }

    /**
     * 发送请求
     *
     * @param url
     * @return
     * @throws Exception
     */
    String send(String url) {
        return HttpClientTools.post(url);
    }

    //字节数组转换为十六进制字符串
    private static String byteToHex(final byte[] hash) {
        Formatter formatter = new Formatter();
        for (byte b : hash) {
            formatter.format("%02x", b);
        }
        String result = formatter.toString();
        formatter.close();
        return result;
    }

    //生成随机字符串
    private static String createNonceStr() {
        return UUID.randomUUID().toString();
    }

    //生成时间戳
    private static String createTimestamp() {
        return Long.toString(System.currentTimeMillis() / 1000);
    }

$(function(){
    var url = location.href.split('#').toString();//url不能写死
    $.ajax({
        type : "post",
        url : "/user/login/getShareInfo",
        dataType : "json",
        async : false,
        data:{url:url},
        success : function(data) {
            wx.config({
                debug: false,////生产环境需要关闭debug模式
                appId: data.appid,//appId通过微信服务号后台查看
                timestamp: data.timestamp,//生成签名的时间戳
                nonceStr: data.nonceStr,//生成签名的随机字符串
                signature: data.signature,//签名
                jsApiList: [//需要调用的JS接口列表
                    'checkJsApi',//判断当前客户端版本是否支持指定JS接口
                    'onMenuShareTimeline',//分享给好友
                    'onMenuShareAppMessage'//分享到朋友圈
                ]
            });
        },
        error: function(xhr, status, error) {
            //alert(status);
            //alert(xhr.responseText);
        }
    })
});

<script type="text/javascript" src="/resources/js/jweixin-1.2.0.js"></script>
<script type="text/javascript" src="/resources/js/share.js"></script>