微信分享接口的java開發的一些小步驟

時間 2019-11-08

標籤微信分享接口 java 開發些小步驟欄目 Java 简体版

原文原文鏈接

1.配置接口信息進行驗證javascript

代碼以下：java

    /**
     * 訪問沒認證的地址跳轉
     *
     * @param request
     * @return 登陸頁面
     * @throws Exception
     */
    @RequestMapping(value = "/checkWxDomainUrl", method = RequestMethod.GET)
    public void checkWxDomainUrl(HttpServletRequest request) throws Exception {

        try {
            // 開發者提交信息後，微信服務器將發送GET請求到填寫的服務器地址URL上，GET請求攜帶參數
            String signature = request.getParameter("signature");// 微信加密簽名（token、timestamp、nonce。）
            String timestamp = request.getParameter("timestamp");// 時間戳
            String nonce = request.getParameter("nonce");// 隨機數
            String echostr = request.getParameter("echostr");// 隨機字符串
            // 將token、timestamp、nonce三個參數進行字典序排序
            String[] params = new String[] { TOKEN, timestamp, nonce };
            Arrays.sort(params);
            // 將三個參數字符串拼接成一個字符串進行sha1加密
            String clearText = params[0] + params[1] + params[2];
            String algorithm = "SHA-1";
            String sign = new String(Hex.encodeHex(
                    MessageDigest.getInstance(algorithm).digest((clearText).getBytes()), true));
            // 開發者得到加密後的字符串可與signature對比，標識該請求來源於微信
            if (signature.equals(sign)) {
                response.getWriter().print(echostr);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }ajax

2.js配置redis

3.獲取分享頁面js須要參數其中獲取token、ticket加入緩存json

    /**
    * 方法名：getWxConfig</br>
    * 詳述：獲取微信的配置信息 </br>
    * 開發人員：gy
    * @param request
    * @return 說明返回值含義
    * @throws 說明發生此異常的條件
     */
    @Override
    public Map<String, Object> getWxConfig(HttpServletRequest request) {
        Map<String, Object> ret = new HashMap<String, Object>();
        String appId = wXConfigure.getAppId(); // 必填，公衆號的惟一標識
        String requestUrl = request.getRequestURL().toString();
        String accessToken = null;
        String jsapiTicket = null;
        String url = "";
        String timestamp = Long.toString(System.currentTimeMillis() / 1000); // 必填，生成簽名的時間戳
        String nonceStr = UUID.randomUUID().toString(); // 必填，生成簽名的隨機串
        //此處先在緩存中查詢，查詢不到在調用接口查詢緩存中須要設置access-token的有效時間
//        redisTemplate.opsForValue().getOperations().delete(prefix);
       // accessToken = (String) redisTemplate.opsForValue().get(prefix);
        Token accessTokenFromRedis = getAccessTokenFromRedis();
        accessToken = accessTokenFromRedis.getAccessToken();
        if (accessTokenFromRedis.getAccessToken() != null) {
            jsapiTicket = (String) redisTemplate.opsForValue().get(prefixTicket);
           if (jsapiTicket==null) {
               url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + accessToken
                       + "&type=jsapi";
               JSONObject json = httpRequest(url, "GET", null);
               if (json != null) {
                   jsapiTicket = json.getString("ticket");
                   redisTemplate.opsForValue().set(prefixTicket, jsapiTicket);
                   redisTemplate.expire(prefixTicket, Integer.parseInt(wXConfigure.getExpireTime()),
                           TimeUnit.SECONDS);
               }
        }
        }
        String signature = "";
        // 注意這裏參數名必須所有小寫，且必須有序
        String sign = "jsapi_ticket=" + jsapiTicket + "&noncestr=" + nonceStr + "&timestamp="
                + timestamp + "&url=" + requestUrl;
        try {
            MessageDigest crypt = MessageDigest.getInstance("SHA-1");
            crypt.reset();
            crypt.update(sign.getBytes("UTF-8"));
            signature = byteToHex(crypt.digest());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        ret.put("appId", appId);
        ret.put("timestamp", timestamp);
        ret.put("nonceStr", nonceStr);
        ret.put("signature", signature);
        return ret;
    }

    /**
    * 方法名：byteToHex</br>
    * 詳述：字符串加密輔助方法 </br>
    * 開發人員：gy </br>
    * @param hash
    * @return 說明返回值含義
    * @throws 說明發生此異常的條件
     */
    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;

    }

    /**
     * 從redis中獲取accessToken，指定key的String值,過時時間7200s
     *
     * @param key
     * @return
     */
    public Token getAccessTokenFromRedis() {
        Token token = null;
        String assesstoken = (String) redisTemplate.opsForValue().get(wXConfigure.getTokenKey());
        if (null != assesstoken && !"".equals(assesstoken)) {
            token = new Token();
            token.setAccessToken(assesstoken);
            return token;
        } else {
            token = CommonWxUtil.getToken(wXConfigure.getAppId(), wXConfigure.getSecret());
            redisTemplate.opsForValue().set(wXConfigure.getTokenKey(), token.getAccessToken());
            redisTemplate.expire(wXConfigure.getTokenKey(), Integer.parseInt(wXConfigure.getExpireTime()),
                    TimeUnit.SECONDS);
            return token;
        }
    }api