本文实例为大家分享了微信JS接口签名的具体代码，供大家参考，具体内容如下

1、微信 JS 接口签名校验工具

2、具体开发

2.1 获取access_token，然后jsapi_ticket

/** * 获取access_token，然后jsapi_ticket */ private String getAccessToken_ticket(String path) { String access_token = null; // access_token String atime = null;// 获取时间 String a_expires_in = null;// 有效时间(s) String ticket = null;// jsapi_ticket String ttime = null;// 得到时间 String t_expires_in = null;// 有效时间(s) String access_tokenStr = TUtils.getAccessToken(APPID, API_KEY); if (access_tokenStr != null && access_tokenStr.indexOf("access_token") != -1) { try { JSONObject jsonObject = new JSONObject(access_tokenStr); access_token = jsonObject.getString("access_token"); a_expires_in = jsonObject.getString("expires_in"); atime = getCurrentDateStr(); } catch (JSONException e) { // e.printStackTrace(); } } if (access_token != null && !access_token.equals("")) { String ticketStr = TicketUtils.getJSAPITicket(access_token); // System.out.println("ticketStr:" + ticketStr); if (ticketStr != null && ticketStr.indexOf("ticket") != -1) { try { JSONObject jsonObject = new JSONObject(ticketStr); ticket = jsonObject.getString("ticket"); t_expires_in = jsonObject.getString("expires_in"); ttime = getCurrentDateStr(); } catch (JSONException e) { // e.printStackTrace(); } } } String result = null; if (ticket != null && !ticket.equals("")) { result = "{\"access_token\":\"" + access_token + "\",\"a_expires_in\":\"" + a_expires_in + "\",\"atime\":\"" + atime + "\",\"ticket\":\"" + ticket + "\",\"t_expires_in\":\"" + t_expires_in + "\",\"ttime\":\"" + ttime + "\"}"; if (MyFileUtils.writeIntoText(path, result)) { // System.out.println("写入文件成功"); // System.out.println(result); } else { System.out.println("写入微信签名文件失败"); } } return result; }public static String getAccessToken(String APPID, String APPSECRET) {String url = "https://api.weixin.qq.com/cgi-bin/token"; String params = "grant_type=client_credential&appid=" + APPID + "&secret=" + APPSECRET;String resultStr = HttpRequest.sendGet(url, params);// sendGet：用get方法获取数据 ,具体请参考之间的关于微信的文章 http:///cgi-bin/ticket/getticket"; String params = "type=jsapi&access_token=" + access_token; String resultStr = HttpRequest.sendGet(url, params); return resultStr; }

2.2具体生成签名signature

public String Wx_Signature() { String path = ServletActionContext.getServletContext().getRealPath( "/wx/"); // System.out.println(path); try { String tokenJSON = MyFileUtils.readText(path); // String access_token = null; // access_token String atime = null;// 获取时间 String a_expires_in = null;// 有效时间(s) String ticket = null;// jsapi_ticket // String ttime = null;// 得到时间 // String t_expires_in = null;// 有效时间(s) String result = tokenJSON; if (result == null || result.equals("")) { tokenJSON = getAccessToken_ticket(path); } // System.out.println(result); if (tokenJSON != null && !tokenJSON.equals("") && tokenJSON.indexOf("access_token") != -1) { try { JSONObject jsonObject = new JSONObject(tokenJSON); // access_token = jsonObject.getString("access_token");// // access_token atime = jsonObject.getString("atime");// 开始时间 a_expires_in = jsonObject.getString("a_expires_in");// 有效时间 ticket = jsonObject.getString("ticket");// jsapi_ticket // System.out.println(ticket); // ttime = jsonObject.getString("ttime");// 开始时间 // t_expires_in = jsonObject.getString("t_expires_in");// // 有效时间 String t1 = getCurrentDateStr(); String t2 = atime; // System.out.println(atime); // System.out.println(a_expires_in); // System.out.println(TimeInterval.getInterval(t2, t1)); long end_time = Long.parseLong(a_expires_in) - 60; if (TimeInterval.getInterval(t2, t1) > end_time) { ticket = getAccessToken_ticket(path); } } catch (JSONException e) { msg = e.getMessage(); } } else { } // System.out.println(ticket); String url = getParameter("url"); String noncestr = TUtils.getRandomString(16); String timestamp = System.currentTimeMillis() + ""; timestamp = timestamp.substring(0, 10); String data = "jsapi_ticket=" + ticket + "&noncestr=" + noncestr + "&timestamp=" + timestamp + "&url=" + url; String digest = new SHA1().getDigestOfString(data.getBytes()); String signature = digest.toLowerCase();// signature result = "{\"noncestr\":\"" + noncestr + "\",\"timestamp\":\"" + timestamp + "\",\"url\":\"" + url + "\",\"signature\":\"" + signature + "\" ,\"ticket\":\"" + ticket + "\"}";　　　　　　　　msg = result; } catch (IOException e) { msg = e.getMessage(); } return msg }

说明：签名是有调用次数，需要将其cache到服务器的文件中。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。