微信JSAPI Ticket接口签名详解

/**  * 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://www.cnblogs.com/jiduoduo/p/5749363.htmlreturn resultStr;}/**  * 根据access_token获取ticket { "errcode":0, "errmsg":"ok", "ticket":  * "bxLdikRXVbTPdHSM05e5u5sUoXNKd8-41ZO3MhKoyN5OfkWITDGgnr2fwJ0m9E8NYzWKVZvdVtaUgWvsdshFKA"  * , "expires_in":7200 }  *   * @param access_token  * @return  */ public static String getJSAPITicket(String access_token) {  String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket";  String params = "type=jsapi&access_token=" + access_token;  String resultStr = HttpRequest.sendGet(url, params);  return resultStr; }

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     + "×tamp=" + 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  }