Appkey=75845872
Accesstoken=adf345346dfgd34534vg
Format=xml
Method=wdgj.member.recharge.list
Timestamp=1469608715
versions=1.0
page_no=1
page_size=100
begin_time=2016-07-25 00:00:00
end_time=2016-07-26 00:00:00
content=<?xml version="1.0" encoding="utf-8" ?><trade_order_info><trade_order></trade_order></trade_order_info>
Sign=eb7e5300db6d8148d247a6fb496ae4a6

        private void Sign()
        {
            string versions = "1.1";
            //收集所有参数值除了appsecret
            List<string> lt = new List<string>();
            lt.Add("1488961025");//timestamp
            lt.Add("07645036");//appkey
            lt.Add(versions);//versions
            lt.Add("wdgj.wms.trade.confirm");//method
            lt.Add("b6e5f1bd8cf34fa1a60ba696f30a4ee6");//accesstoken
            lt.Add("xml");//format
            lt.Add("1");//page_no
            lt.Add("50");//page_size
            lt.Add("2016-07-25 00:00:00");//begin_time
            lt.Add("2016-07-26 11:00:33");//end_time
            lt.Add("<trade_order_info><trade_order></trade_order></trade_order_info>");//content
            //....其他用到的参数值，根据每个方法需要传的参数
            if (versions == "1.1")
            {
                //ASCII码排序
                lt.Sort(StringComparer.Ordinal);
            }
            else
            {
                //字典排序
                lt.Sort();
            }
            string appsecret = "407283c4177841e2b827928cbdf989eb";//密钥
            string strSgin = appsecret + string.Join("", lt) + appsecret;//签名之前的字符串
            string sign = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strSgin, "MD5").ToLower();
        }

    //收集签名需要的参数
    public static Map<string, object> getMap() {
        String timestamp = System.currentTimeMillis() / 1000;
        HashMap<string, object> map = new HashMap<>();
        map.put("accesstoken", "b6e5f1bd8cf34fa1a60ba696f30a4ee6");
        map.put("appkey", "07645036");
        map.put("timestamp", timestamp);
        map.put("versions", "1.1");
        map.put("format","xml");
        map.put("page_no","1");
        map.put("page_size","50");
        map.put("begin_time","2016-07-25 00:00:00");
        map.put("end_time",2016-07-26 11:00:33");
        map.put("content","<trade_order_info><trade_order></trade_order></trade_order_info>");
        //map.put（除appsecret参数外的所有系统级参数和应用级级参数值，根据每个方法需要传的参数）
        return map;
    }
    //生成签名
    private static String getSign(Map paraMap) {
        Iterator iter = paraMap.entrySet().iterator();
        List<string> list = new ArrayList<>();
        String AppSecret = context.getString(R.string.dfAppSecret);
        while (iter.hasNext()) {
            Map.Entry entry = (Map.Entry) iter.next();
            String val = entry.getValue().toString();
            list.add(val);
        }
        //ASCII码排序
        Collections.sort(list, new Comparator<string>() {
            public int compare(String o1, String o2) {
                return o1.compareTo(o2);
            }
        });
        StringBuilder builder = new StringBuilder();
        //参数拼接
        builder.append(AppSecret);
        for (String value : list) {
            builder.append(value);
        }
        builder.append(AppSecret);
        //md5加密后得到最终的签名
        return getMd5Value(builder.toString());
    }
    //自己处理一下md5加密，原生的md5加密方法有问题
    public static String getMd5Value(String sSecret) {
            MessageDigest bmd5 = MessageDigest.getInstance("MD5");
            bmd5.update(sSecret.getBytes("UTF-8"));
            int i;
            StringBuffer buf = new StringBuffer();
            byte[] b = bmd5.digest();
            for (int offset = 0; offset < b.length; offset++) {
                i = b[offset];
                if (i < 0)
                    i += 256;
                if (i < 16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            return buf.toString();
    }
        

    import requests
    import json
    import time
    import hashlib
    def openwdgj(content):
    # 固定常量
    AppSecret = 'n800m9iaei27l1n3b5eh7ko87gfl2k0g'
    # 公共固定参数
    data = {
    'Appkey': '71005530',
    'Accesstoken': '191167eb31f242bfa4a089359b77f5e4',
    'Format': 'json',
    'Versions': '1.1'
    }
    data['Timestamp'] = int(time.time())
    #  遍历参数，放入data
    for ckey in content:
    data[ckey] = content.get(ckey)
    #取出字典里所有的值，放到sorted_key_list作排序。
    sorted_key_list = []
    for item in data:
    sorted_key_list.append(data[item])
    #对数组进行排序，默认是按数值排序，KEY=STR强转成字符串排序。
    sorted_key_list = sorted(sorted_key_list, key=str)
    #print(sorted_key_list)
    sign = '{}'.format(AppSecret)
    #按开放平台的要求进行拼接参数值
    for key in sorted_key_list:
    sign = '{}{}'.format(sign, key)
    sign = '{}{}'.format(sign, AppSecret)
    #把拼接的结果计算MD5
    hl = hashlib.md5()
    hl.update(sign.encode(encoding='utf-8'))
    sign = hl.hexdigest()