微信JSAPI Ticket接口签名详解

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://www.cnblogs.com/jiduoduo/p/5749363.html

return 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;
 }

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。