微信&java 开发7 js sdk 获取签名 signature

来源：互联网发布：咨询公司数据分析工资编辑：程序博客网时间：2024/05/18 02:40

在前面的章节如果全局缓存了 access_token和 jsapi_ticket的话这里直接获取

springmvc 中

@RequestMapping(value = "/gotoWtjb")public ModelAndView  gotoWtjb(HttpServletRequest request,            HttpServletResponse response, ModelMap modelMap) {Map<String, String> map=SignatureUtil.get(request);        modelMap.addAllAttributes(map);        return new ModelAndView("index",modelMap);}

看SignatureUtil.get(request);方法签名算法请看官方文档

public static Map<String, String> get(HttpServletRequest request) {JsApiTicket jsApiTicket = (JsApiTicket)ServletContextUtil.get().getAttribute(Contants.JSAPI_TICKET);if(null != jsApiTicket) {String ticket = jsApiTicket.getTicket();String url = request.getRequestURL().toString();System.out.println(url);Map<String, String> ret = sign(ticket, url);ret.put("appId", WeiXinPropUtil.APPID);ret.put("doMain", WeiXinPropUtil.WebDomain);return ret;}return null;};

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 = "";string1 = "jsapi_ticket=" + jsapi_ticket + "&noncestr=" + nonce_str+ "×tamp=" + timestamp + "&url=" + url;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;}private static String create_nonce_str() {return UUID.randomUUID().toString();}private static String create_timestamp() {return Long.toString(System.currentTimeMillis() / 1000);}

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