springboot获取微信JSDK签名信息的实现示例
作者:sccd2009
本文介绍了如何在Spring Boot应用中获取微信JSDK的签名信息,包括获取接口URL、参数设置、签名算法和获取签名结果的步骤,具有一定的参考价值,感兴趣的可以了解一下
目标
现实项目的需要,需要获取微信jssdk签名信息
步骤
1. 初始化配置信息
public Map initJSSDKConfigInfo(String shareUrl) throws Exception { //String accessToken = this.getAccessToken(); String jsapiTicket = this.getJsApiTicket(); String timestamp = Long.toString(System.currentTimeMillis() / 1000); String nonceStr = UUID.randomUUID().toString(); String signature = this.buildJSSDKSignature(jsapiTicket,timestamp,nonceStr,shareUrl); Map<String,String> map = new HashMap<String,String>(); map.put("shareUrl", shareUrl); map.put("jsapi_ticket", jsapiTicket); map.put("nonceStr", nonceStr); map.put("timestamp", timestamp); map.put("signature", signature); map.put("appid", WeChatConfig.appId); return map; }
2. ticket信息获取
private String getJsApiTicket() { String jsApiTicket =redisCache.getCacheObject(JS_API_TICKET); if (!StrUtil.isNotEmpty(jsApiTicket)){ //获取全局的access_token,唯一票据 String accessToken = redisCache.getCacheObject(ACCESS_TOKEN_KEY); //log.info("getJsApiTicket"+accessToken); if (StringUtils.isNotBlank(accessToken)) { //获取jsapi_ticket String url = WeChatConfig.getTicketUrl+"access_token="+accessToken+"&type=jsapi"; HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); //请求 RestTemplate restTemplate = new RestTemplate(); HttpEntity<String> request = new HttpEntity<>(headers); ResponseEntity<String> responseString = restTemplate.postForEntity(url, request, String.class); JSONObject json = JSONObject.parseObject(responseString.getBody()); jsApiTicket = json.getString("ticket"); redisCache.setCacheObject(JS_API_TICKET, jsApiTicket, 115, TimeUnit.MINUTES); }else { //access为空打印 log.info("accessToken","重新获取"); this.creatAccessToken(); accessToken = redisCache.getCacheObject(ACCESS_TOKEN_KEY); String url = WeChatConfig.getTicketUrl+"access_token="+accessToken+"&type=jsapi"; HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); //请求 RestTemplate restTemplate = new RestTemplate(); HttpEntity<String> request = new HttpEntity<>(headers); ResponseEntity<String> responseString = restTemplate.postForEntity(url, request, String.class); JSONObject json = JSONObject.parseObject(responseString.getBody()); jsApiTicket = json.getString("ticket"); redisCache.setCacheObject(JS_API_TICKET, jsApiTicket, 115, TimeUnit.MINUTES); } } log.info("getJsApiTicket jsApiTicket: {}", jsApiTicket); return jsApiTicket.trim(); }
3. 信息处理封装
public static String buildJSSDKSignature(String ticket,String timestamp,String nonceStr ,String url) throws Exception { String orderedString = "jsapi_ticket=" + ticket + "&noncestr=" + nonceStr + "&timestamp=" + timestamp + "&url=" + url; return sha1(orderedString); } public static String sha1(String orderedString) throws Exception { String ciphertext = null; MessageDigest md = MessageDigest.getInstance("SHA-1"); byte[] digest = md.digest(orderedString.getBytes()); ciphertext = byteToStr(digest); return ciphertext.toLowerCase(); } private static String byteToStr(byte[] byteArray) { String strDigest = ""; for (int i = 0; i < byteArray.length; i++) { strDigest += byteToHexStr(byteArray[i]); } return strDigest; } private static String byteToHexStr(byte mByte) { char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; char[] tempArr = new char[2]; tempArr[0] = Digit[(mByte >>> 4) & 0X0F]; tempArr[1] = Digit[mByte & 0X0F]; String s = new String(tempArr); return s; }
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