微信支付----APP（安卓，IOS）调起微信支付所需参数，c#后台接口

 #region 微信APP支付接口
        /// 

        /// 微信APP支付接口
        /// 
        /// 支付订单号支付金额
        /// 1.安卓，2.IOS
        /// 
        [HttpGet]
        public CommonResponse APP_Pay(string out_trade_no,Double total_fee,int type)
        {
            PayMent pm = new PayMent();
            string ip = HttpContext.Current.Request.UserHostAddress;
            int money =int.Parse((total_fee * 100).ToString());
            Wx_pay wp = pm.APP_PayMent("服务费",ip,money,out_trade_no,type);
            if (wp.sign == "") {
                return new CommonResponse { Data = null, Message = "系统异常,联系管理员！", Code = EnumResponseCode.Fail.GetHashCode() };
            }
            return new CommonResponse { Data = wp, Message = String.Empty, Code = EnumResponseCode.Successful.GetHashCode() };
        }
        #endregion 
         
       ///
       ///是对返回数据类型
       ///
     public class CommonResponse 
    {
        public T Data { get; set; }
         
          /// 

        /// 代码  1:失败，2:成功
        /// 
 
        public int Code { get; set; }
        /// 

        /// 消息
        /// 
 
        public string Message { get; set; }
 
        /// 

        /// 其他附带信息
        /// 
 
        public string Tag { get; set; }
         
    }
        
        /// 

    /// 微信APP支付实体
    /// 
  public class Wx_pay
    {
        /// 

        /// 应用ID
        /// 
        public string appid { set; get; } = "";
        /// 

        /// 商户号
        /// 
        public string partnerid { set; get; } = "";
        /// 

        /// 预支付交易会话ID
        /// 
        public string prepayid { set; get; } = "";
        /// 

        /// 扩展字段
        /// 
        public string package { set; get; } = "Sign=WXPay";
        /// 

        /// 随机字符串
        /// 
        public string noncestr { set; get; } = "";
        /// 

        /// 时间戳
        /// 
        public string timestamp { set; get; } = "";
 
        /// 

        /// 签名
        /// 
        public string sign { set; get; } = "";
    }
        
        
        
        
             #region 微信APP支付
        /// 

        /// 微信APP支付
        /// 
        /// 商品描述
        /// 商户号
        /// 终端IP
        /// 金额
        /// 商户订单号
        /// 
        public Wx_pay APP_PayMent( string boby,  string spbill_create_ip, int total_fee, string out_trade_no,int type)
       {
           UnifiedOrder order = new UnifiedOrder();
            if (type == 1)
            {
                order.appid = APP_Aconfig.appid;
                order.mch_id = APP_Aconfig.partnerid;
            }
            else {
                order.appid = APP_Iconfig.appid;
                order.mch_id = APP_Iconfig.partnerid;
            }
           order.attach = "APP名称-支付内容说明";
           order.body = boby;
           order.device_info = "WEB";
           order.nonce_str = TenpayUtil.getNoncestr();
           order.notify_url = APP_Aconfig.url;
           order.out_trade_no = out_trade_no;
           order.trade_type = "APP";
           order.spbill_create_ip = spbill_create_ip;
           order.total_fee = total_fee;
           TenpayUtil tenpay = new TenpayUtil();
            string paySignKey = string.Empty;
            if (type == 1)
            {
                paySignKey = APP_Aconfig.paysignkey;
            }
            else {
                 paySignKey = APP_Iconfig.paysignkey;
            }
           string prepay_id = tenpay.getPrepay_id(order, paySignKey);       
           string timeStamp = TenpayUtil.getTimestamp();
           string nonceStr = TenpayUtil.getNoncestr();
           SortedDictionary sParams = new SortedDictionary();
           sParams.Add("appid", order.appid);
          sParams.Add("partnerid", order.mch_id);
            sParams.Add("prepayid", prepay_id);           
           sParams.Add("noncestr", nonceStr);
            sParams.Add("timestamp", timeStamp);
            sParams.Add("package", "Sign=WXPay");
           string paySign = tenpay.getsign(sParams, paySignKey);
            Wx_pay wp = new Wx_pay();
            wp.appid = order.appid;
            wp.partnerid = order.mch_id;
            wp.noncestr = nonceStr;
            wp.prepayid = prepay_id;
            wp.sign = paySign;
            wp.timestamp = timeStamp;
            return wp;
       }
        #endregion
         
         /// 

    /// APP安卓支付配置
    /// 
    public class APP_Aconfig
    {
        public const string appid = "";//APPID
        public const string partnerid = "";//商户号
        public const string paysignkey = "";//证书密匙
        public const string url = "";//回调ur
    }
         
         /// 

    /// APPios 支付配置
    /// 
    public class APP_Iconfig
    {
        public const string appid = "";//APPID
        public const string partnerid = "";//商户号
        public const string paysignkey = "";//证书密匙
        public const string url = "";//回调url
    }
         
         
        对于   TenpayUtil tenpay = new TenpayUtil();这个类其他文章上有代码。
         
请求方式：http get         
接口参数说明
名称    类型    必填    说明    
out_trade_no    string    是    支付订单ID    
total_fee    Double    是    支付金额    
type    int    是    1.安卓，2.IOS    
  
返回示例：
/****失败示例**/
{
"Code":1, /*状态码  1：失败 2：成功 */
"Message":"错误信息",/*消息(一般失败时，返回错误信息)*/
"Tag":""/*附加信息*/
}
  
  
  
/****成功示例**/
{
"Code":2, /*状态码  1：失败 2：成功*/
“Data”:[]
"Message":"",/*消息(一般失败时，返回错误信息)*/
"Tag":"附加信息"/* */
}
接口返回Data集合参数说明
名称    类型    说明    
appid    string    应用ID    
partnerid    String     商户号    
prepayid    String    预支付交易会话ID    
package    String    扩展字段    
noncestr    String    随机字符串    
timestamp    String    时间戳    
sign    String    签名    
  
  
  
  
  
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