微信自定义分享获取签名
来源：互联网 发布：浙师大网络继续教育 编辑：程序博客网 时间：2024/06/06 02:01
在上一篇文章中介绍了微信自定义分享对页面进行的配置。想要实现页面的这些配置，需要后台获取相应的值传到页面中。
那么那些值都是如何获取的呢？
如需获取页面中的值，APPID是公众号的唯一标识（存储在数据库中），可通过accountID（公众号id）来得到。timestamp ,生成签名的时间戳和nonceStr签名生成的字符串可以这样获取：
<span style="font-size:18px;"><span style="font-size:18px;"> private static String create_nonce_str() { return UUID.randomUUID().toString();//随机字符串 } private static String create_timestamp() { return Long.toString(System.currentTimeMillis() / 1000);//时间戳 }</span></span>最后的signatrue签名需要签名机制来生成。
签名机制：
1、通过access_token采用http Get方式的请求获取jsapi_ticket(有效期为7200秒）
2、通过得到的jsapi_ticket和随机字符串noncestr,时间戳timestamp,当前网页的URL（不包含#及其后面部分），对这几个参数按照ASCII码从小到大排序（字典序），使用URL键值对的格式（key1=value1&key2=value2…)拼接成字符串string1，这里所有的参数均为小写字符。
3、然后对string1进行SHA1加密。字段名和字段值都采用原始值，不进行ＵＲＬ转义。
<span style="font-size:18px;"><span style="font-size:18px;"> public Map<String, String> test(HttpServletRequest requesturl, String accountid) throws Exception { String ticket = getWeiXinTicket(accountid); // 注意 URL 一定要动态获取，不能 hardcode String url = requesturl.getRequestURL().toString(); String domain = ResourceUtil.getConfigByName("domain"); String param = requesturl.getQueryString(); url = url + "?" + param; Map<String, String> ret = sign(ticket, url); for (Map.Entry entry : ret.entrySet()) { System.out.println(entry.getKey() + ", " + entry.getValue()); } ret.put("appId", appId); return ret; } public static Map<String, String> sign(String jsapi_ticket, String url) { Map<String, String> ret = new HashMap<String, String>(); String nonce_str = create_nonce_str(); String timestamp = create_timestamp(); 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=" + jsapi_ticket + "&noncestr=" + nonce_str + "×tamp=" + timestamp + "&url=" + url; System.out.println(string1); try { MessageDigest crypt = MessageDigest.getInstance("SHA-1"); crypt.reset(); crypt.update(string1.getBytes("UTF-8")); signature = byteToHex(crypt.digest()); } catch (NoSuchAlgorithmException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } ret.put("url", url); ret.put("jsapi_ticket", jsapi_ticket); ret.put("nonceStr", nonce_str); ret.put("timestamp", timestamp); ret.put("signature", signature); return ret; } 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; }</span></span><span style="font-size:18px;"><span style="font-size:18px;"> public String getWeiXinTicket(String accountid) throws Exception { String token = getAccessToken(accountid);// if(null==apiticket){// URL url1=new URL("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+accessToken.getToken()+"&type=jsapi");// String urll = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=accessToken&type=jsapi"; String urll = WeixinUtil.share_url; String requestUrll = urll.replace("accessToken", token); JSONObject json1 = httpRequest(requestUrll, "GET", null); String ticket = (String) json1.get("ticket"); return ticket; // 断开连接 }</span></span><span style="font-size:18px;"><span style="font-size:18px;"> public String getAccessToken(String accountId) throws Exception { String token = "";// WeixinAccountServiceImpl impl=new WeixinAccountServiceImpl(); WeixinAccountEntity account = weixinAccountService.findUniqueByProperty(WeixinAccountEntity.class, "id", accountId); appId = account.getAccountappid(); if (!account.getAuthorizationType().equalsIgnoreCase("0")) { return this.getAuthorizerAccessToken(account.getId()); } token = account.getAccountaccesstoken(); if (token != null && !"".equals(token)) { // 判断有效时间 是否超过2小时 java.util.Date end = new java.util.Date(); java.util.Date start = new java.util.Date(account.getAddtoekntime() .getTime()); if ((end.getTime() - start.getTime()) / 1000 / 3600 >= 2) { // 失效 重新获取 String requestUrl = WeixinUtil.access_token_url.replace( "APPID", account.getAccountappid()).replace( "APPSECRET", account.getAccountappsecret()); JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "GET", null); if (null != jsonObject) { try { token = jsonObject.getString("access_token"); // 重置token account.setAccountaccesstoken(token); // 重置事件 account.setAddtoekntime(new Date()); weixinAccountService.saveOrUpdate(account); } catch (Exception e) { token = null; // 获取token失败 String wrongMessage = "获取token失败 errcode:{} errmsg:{}" + jsonObject.getInt("errcode") + jsonObject.getString("errmsg"); } } } else { return account.getAccountaccesstoken(); } } else { String requestUrl = WeixinUtil.access_token_url.replace("APPID", account.getAccountappid()).replace("APPSECRET", account.getAccountappsecret()); JSONObject jsonObject = WeixinUtil.httpRequest(requestUrl, "GET", null); if (null != jsonObject) { try { token = jsonObject.getString("access_token"); // 重置token account.setAccountaccesstoken(token); // 重置事件 account.setAddtoekntime(new Date()); weixinAccountService.saveOrUpdate(account); } catch (Exception e) { token = null; // 获取token失败 String wrongMessage = "获取token失败 errcode:{} errmsg:{}" + jsonObject.getInt("errcode") + jsonObject.getString("errmsg"); } } } return token; }</span></span><span style="font-size:18px;"> public String getWeiXinTicket(String accountid) throws Exception { WeixinAccountEntity account = weixinAccountService.findUniqueByProperty(WeixinAccountEntity.class, "id", accountid); String ticket=""; ticket=account.getJsapiTicket(); if (ticket != null && !"".equals(ticket)) { // 判断有效时间 是否超过2小时 java.util.Date end = new java.util.Date(); java.util.Date start = new java.util.Date(account.getJsapiTicketTime() .getTime()); if ((end.getTime() - start.getTime()) / 1000 / 3600 >= 2) { // 失效 重新获取 String urll = WeixinUtil.share_url; String token = getAccessToken(accountid); String requestUrll = urll.replace("accessToken", token); JSONObject json1 = httpRequest(requestUrll, "GET", null); if (null != json1) { try { ticket = (String) json1.get("ticket"); // 重置ticket account.setJsapiTicket(ticket); // 重置事件 account.setJsapiTicketTime(new Date()); weixinAccountService.saveOrUpdate(account); } catch (Exception e) { token = null; // 获取token失败 String wrongMessage = "获取ticket失败 errcode:{} errmsg:{}" + json1.getInt("errcode") + json1.getString("errmsg"); } } } else { ticket= account.getJsapiTicket(); } } else { String urll = WeixinUtil.share_url; String token = getAccessToken(accountid); String requestUrll = urll.replace("accessToken", token); JSONObject json1 = httpRequest(requestUrll, "GET", null); if (null != json1) { try { ticket = (String) json1.get("ticket"); // 重置ticket account.setJsapiTicket(ticket); // 重置事件 account.setJsapiTicketTime(new Date()); weixinAccountService.saveOrUpdate(account); } catch (Exception e) { token = null; // 获取token失败 String wrongMessage = "获取ticket失败 errcode:{} errmsg:{}" + json1.getInt("errcode") + json1.getString("errmsg"); } } }</span><span style="font-size:18px;"><span style="font-size:18px;"> public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) { JSONObject jsonObject = null; StringBuffer buffer = new StringBuffer(); try { // 创建SSLContext对象，并使用我们指定的信任管理器初始化 TrustManager[] tm = {new MyX509TrustManager()}; SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE"); sslContext.init(null, tm, new java.security.SecureRandom()); // 从上述SSLContext对象中得到SSLSocketFactory对象 SSLSocketFactory ssf = sslContext.getSocketFactory(); URL url = new URL(requestUrl); HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); httpUrlConn.setSSLSocketFactory(ssf); httpUrlConn.setDoOutput(true); httpUrlConn.setDoInput(true); httpUrlConn.setUseCaches(false); // 设置请求方式（GET/POST） httpUrlConn.setRequestMethod(requestMethod); if ("GET".equalsIgnoreCase(requestMethod)) httpUrlConn.connect(); // 当有数据需要提交时 if (null != outputStr) { OutputStream outputStream = httpUrlConn.getOutputStream(); // 注意编码格式，防止中文乱码 outputStream.write(outputStr.getBytes("UTF-8")); outputStream.close(); } // 将返回的输入流转换成字符串 InputStream inputStream = httpUrlConn.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str = null; while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); // 释放资源 inputStream.close(); inputStream = null; httpUrlConn.disconnect(); jsonObject = JSONObject.fromObject(buffer.toString()); // jsonObject = JSONObject.fromObject(buffer.toString()); } catch (ConnectException ce) { org.jeecgframework.core.util.LogUtil.info("Weixin server connection timed out."); } catch (Exception e) { org.jeecgframework.core.util.LogUtil.info("https request error:{}" + e.getMessage()); } return jsonObject; }</span></span><span style="font-size:18px;"><span style="font-size:18px;"> public String getAuthorizerAccessToken(String id) { String ret = ""; if (StringUtils.isBlank(id)) { return ret; } WeixinAccountEntity account = weixinAccountService.findUniqueByProperty(WeixinAccountEntity.class, "id", id);// WeixinAccountEntity account = this.getEntity(WeixinAccountEntity.class, id); if (account.getAuthorizationType().equalsIgnoreCase("0")) { logger.info(String.format("weixin account %s 没有使用第三方授权", id)); } else { String token = account.getAuthorizerAccessToken(); if (StringUtils.isNotBlank(token) && account.getAuthorizerAccessTokenExpireTime().after(new Date())) { ret = token; } else { String platformId = account.getOpenPlatformId(); WeixinOpenPlatformEntity platform = weixinOpenPlatformService.getEntity(WeixinOpenPlatformEntity.class, platformId); String componentAccessToken = getComponentAccessToken(id); String componentAppId = platform.getAppId(); String authorizerAppId = account.getAccountappid(); String refreshToken = account.getAuthorizerRefreshToken(); String requestUrl = API_AUTHORIZER_TOKEN.replace("COMPONENT_ACCESS_TOKEN", componentAccessToken); JSONObject postData = new JSONObject(); postData.put("component_appid", componentAppId); postData.put("authorizer_appid", authorizerAppId); postData.put("authorizer_refresh_token", refreshToken); JSONObject obj = WeixinUtil.httpRequest(requestUrl, "POST", postData.toString()); if (obj.containsKey("authorizer_access_token")) { String authorizerAccessToken = obj.getString("authorizer_access_token"); String authorizerRefreshToken = obj.getString("authorizer_refresh_token"); int expiresIn = obj.getInt("expires_in"); Date expireTime = addTime(new Date(), expiresIn, Calendar.SECOND); ret = authorizerAccessToken; account.setAuthorizerAccessToken(authorizerAccessToken); account.setAuthorizerRefreshToken(authorizerRefreshToken); account.setAuthorizerAccessTokenExpireTime(expireTime); weixinAccountService.saveOrUpdate(account); } else { logger.info(String.format("获取authorizer_access_token失败: %s", obj.toString())); } } } return ret; } public String getComponentAccessToken(String id) { String ret = ""; WeixinAccountEntity account = weixinAccountService.findUniqueByProperty(WeixinAccountEntity.class, "id", id); if (account.getId().equalsIgnoreCase("-1")) { logger.info("找不到当前登录微信公众号"); return ret; } else { if (account.getAuthorizationType().equalsIgnoreCase("1") || account.getAuthorizationType().equalsIgnoreCase("2")) { String platformId = account.getOpenPlatformId(); ret = this.getComponentAccessToken(platformId, "temp"); } else { logger.info(String.format("公众号未采用第三方授权. id:%s, authorizationType:%s, accountId:%s", account.getId(), account.getAuthorizationType(), account.getWeixin_accountid())); } } return ret; } public String getComponentAccessToken(String platformId, String temp) { String ret = ""; if (StringUtils.isBlank(platformId)) { return ret; } WeixinOpenPlatformEntity entity = systemService.get(WeixinOpenPlatformEntity.class, platformId); Date now = new Date(); if (StringUtils.isNotBlank(entity.getComponentAccessToken()) && entity.getTokenExpireTime().after(now)) { ret = entity.getComponentAccessToken(); } else { JSONObject postData = new JSONObject(); postData.put("component_appid", entity.getAppId()); postData.put("component_appsecret", entity.getAppSecret()); postData.put("component_verify_ticket", entity.getComponentVerifyTicket()); JSONObject obj = WeixinUtil.httpRequest(API_COMPONENT_TOKEN, "POST", postData.toString()); if (obj.containsKey("component_access_token")) { String token = obj.getString("component_access_token"); Integer expiresIn = obj.getInt("expires_in"); ret = token; Date expireTime = addTime(new Date(), expiresIn, Calendar.SECOND); entity.setComponentAccessToken(token); entity.setTokenExpireTime(expireTime); systemService.save(entity); } else { logger.info(String.format("获取component_access_token失败. %s", obj.toString())); } } return ret; } private Date addTime(Date current, int value, int unit) { Calendar c = Calendar.getInstance(); c.setTime(current); c.add(unit, value); return c.getTime(); }</span></span> 0 0
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