1.֧ӿҪ޸Ĳļ Default.aspx ļ;Ҹɹҳʱ return_url(ҳת),notify_url(̨֪ͨ);AliPay.cs ޸. Default.aspx ļ seller_email,key,partner Ӧķֱ֧ʺ,ȫУͺid 
(עλȡȫУͺID
1. www.alipay.comȻ½ʻ.
2.Ͻǵġ̼ҹߡ.
3.վĿ¼£ѡʺĽ׷ʽȻ.
4.д񣬵һԿһ32λַǰȫУ.
5.IDڰȫУ·.)
 Default.aspx ҳ,Ҫݲҳ,ҪݵĲ subject(Ʒ),body(Ʒ˵),total_fee,out_trade_no(ⲿ̼Ҷ.Ϊ˷,index.aspҳõڵʽַ,ű뱣֤ύ֧ʱΨһ,֧

2.
 return_url   notify_url .
Ҹɹ,ӿָreturn_url ,Ҹ return_urlڵҳ,ҳչʾͻ,ҳֻиɹŻת.

 notify_url: ̨֪ͨ,ҳǳ̨е(ҺҶ),Ҹ,֧notify_urlҳڵҳ沢ӦĲݵҳ,ҳ֧ݹĲ޸վ״̬,궩Ҫҳϴӡһsuccess ֧,֧Ĳsuccess,֧ҳ. 
 
 :  Ҹ(trade_status=TRADE_FINISHED)--->֧֪ͨnotify_url--->֧success(ʾɹ,״̬²ٷ,Ǽ֪ͨ,һһηͺ͵ڶη͵ʱ3)
 ʣµĹ,ҷ,ȷջ,׳ɹ


ųķ
1:ϢʾΪILLEGAL_SIGNǩ֤
CreatUrlķʽһ£ⶼ
2:ϢʾΪILLEGAL_ARGUMENTڲʽ
鿴ӿڷҳĲǲǷҪ
3ϢʾΪILLEGAL_SERVICEЧӿ
鿴service
4ϢʾΪILLEGAL_PARTNERЧID
鿴partner
5:ϢʾΪILLEGAL_SIGN_TYPEЧǩʽ
sign_typeǼͣһΪmd5
6:ϢʾΪDIRECT_PAY_AMOUNT_OUT_OF_RANGEڿٸܽֵ
ٸ֧Ϊ2000ÿû
7:ϢʾΪHASH_NO_PRIVILEGEûȨ޷ʸ÷
鿴service֧ʺӵеȨǲһ
8:ϢʾΪDONATE_GREATER_THAN_MAXСܽֵ
СһΪ100
9:ϢʾΪOUT_TRADE_NO_EXISTⲿ׺Ѿ
ⲿ׺ظ
10:ϢʾΪTRADE_NOT_EXISTڽײ
11:ϢʾΪILLEGAL_PAYMENT_TYPEЧ֧
鿴ûPAYMENT_TYPEǲǶԵ
12:ϢʾΪBUYER_NOT_EXISTҲ
鿴buyer_emailʺǲ֧ʺ
13:ϢʾΪSELLER_NOT_EXISTҲ
seller_emailʺǲ֧ʺ
14:ϢʾΪBUYER_SELLER_EQUALҡͬһʻ
ͬһ֧ʺŲͬΪҺ
15:ϢʾΪILLEGAL_LOGISTICS_FORMATЧʽ
ֻͣEMSPOSTEXPRESSΪEMSƽʣ
16:ϢʾΪTOTAL_FEE_LESSEQUAL_ZEROڽܽСڵ0
pricetotal_feeСڵ0
17:ϢʾΪTOTAL_FEE_OUT_OF_RANGEڽܽΧ
18:ϢʾΪILLEGAL_FEE_PARAMڷǷ׽ʽ
pricetotal_feeֵǷ淶