WeChat APP payment: IOS mobile client + java background edition, appios

APP payment: IOS Mobile Phone + java background edition, appios
APP payment (IOS mobile client + java background)0.Introduction Preview

For scenarios where you need to access native payment on IOS Mobile Phones, call to make payment.

1. Data Preparation 1.1 account registration 1.2 developer Authentication

Log on to the account center and perform developer qualification authentication.

1.3 register an application

After the authentication is complete, go to the management center and create a new mobile application. Enter the application information. For more information, see the document. After the creation is complete, click View to apply for payment. Everything is ready!

2. Java Background Development

Add dependency

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Org. xmlpull

Xmlpull

1.1.3.1

Net. sf. json-lib

Json-lib

2.3

Jdk15

Com. thoughtworks. xstream

Xstream

1.4.5

Com. ning

Async-http-client

1.8.13

Generate unified order

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@ RequestMapping (value = "/pay/wxpay/params", produces = "application/json; charset = UTF-8 ")

@ ResponseBody

PublicStringsignprams (HttpServletRequestrequest ){

Stringres = "{code: 404 }";

Try {

// Recharge Amount

Stringaccount = request. getParameter ("account ");

// User ID

Stringsid = request. getParameter ("sid ");

Stringsubject = "Order title ";

Stringbody = "order description ";

Intacc = (int) (Double. valueOf (account) * 100 );

Stringappid = "Your APPID ";

Stringout_trade_no = "generate your order number ";

// Generate order data

SortedMappayMap = genOrderData (request, subject, body, acc, appid, out_trade_no );

SavePayLog (out_trade_no, account, sid, body, payMap. get ("paySign"), nid, 2 );

// 4. return data

Res = buildPayRes (payMap, out_trade_no );

} Catch (effectione ){

E. printStackTrace ();

Res = & quot; {code: 500} & quot }";

}

Returnres;

}

PrivateSortedMapgenOrderData (HttpServletRequestrequest, Stringsubject, Stringbody,

Intacc, Stringappid, Stringout_trade_no)

ThrowsIOException, ExecutionException, InterruptedException, XmlPullParserException {

SortedMapparaMap = newTreeMap ();

ParaMap. put ("appid", appid );

ParaMap. put ("attach", subject );

ParaMap. put ("body", body );

ParaMap. put ("mch_id", "Your merchant id, go to the merchant platform to view ");

ParaMap. put ("nonce_str", create_nonce_str ());

ParaMap. put ("yy_url", "https://pay.xxxxx.com/pay/wxpay/notify.htm"); // This path is the server call payment result notification path

ParaMap. put ("out_trade_no", out_trade_no );

ParaMap. put ("spbill_create_ip", request. getRemoteAddr ());

ParaMap. put ("total_fee", acc + "");

ParaMap. put ("trade_type", "APP ");

Stringsign = createSign (paraMap );

ParaMap. put ("sign", sign );

// Unified order https://api.mch.weixin.qq.com/pay/unifiedorder

Stringurl = "https://api.mch.weixin.qq.com/pay/unifiedorder ";

Stringxml = getRequestXml (paraMap );

StringxmlStr = HttpKit. post (url, xml );

// Prepaid item id

Stringprepay_id = "";

If (xmlStr. indexOf ("SUCCESS ")! =-1 ){

Mapmap = WXRequestUtil. doXMLParse (xmlStr );

Prepay_id = (String) map. get ("prepay_id ");

}

SortedMappayMap = newTreeMap ();

PayMap. put ("appid", appid );

PayMap. put ("partnerid", "Your merchant id, go to the merchant platform to view ");

PayMap. put ("prepayid", prepay_id );

PayMap. put ("package", "Sign = WXPay ");

PayMap. put ("noncestr", create_nonce_str ());

PayMap. put ("timestamp", WXRequestUtil. create_timestamp ());

StringpaySign = createSign (payMap );

PayMap. put ("paySign", paySign );

ReturnpayMap;

}

// Request xml assembly

PublicstaticStringgetRequestXml (SortedMapparameters ){

Stringsign = "";

StringBuffersb = newStringBuffer ();

Sb. append ("

Setes = parameters. entrySet ();

Iteratorit = es. iterator ();

While (it. hasNext ()){

Map. Entryentry = (Map. Entry) it. next ();

Stringkey = (String) entry. getKey ();

Stringvalue = (String) entry. getValue ();

// If ("attach". inclusignorecase (key) | "body". inclusignorecase (key) | "sign". inclusignorecase (key )){

// Sb. append ("<" + key + ">" + value + "");

//}

If ("sign". inclusignorecase (key )){

Sign = "<" + key + ">" + value + "";

} Else {

Sb. append ("<" + key + ">" + value + "");

}

}

Sb. append (sign );

Sb. append ("");

Returnsb. toString ();

}

// Generate a signature

PublicStringcreateSign (SortedMapparameters ){

StringBuffersb = newStringBuffer ();

Setes = parameters. entrySet ();

Iteratorit = es. iterator ();

While (it. hasNext ()){

Map. Entryentry = (Map. Entry) it. next ();

Stringk = (String) entry. getKey ();

Objectv = entry. getValue ();

If (null! = V &&! "". Equals (v)

&&! "Sign". equals (k )&&! "Key". equals (k )){

Sb. append (k + "=" + v + "&");

}

}

Sb. append ("key =" + WXConfig. APP_PERTNER_KEY );

System. out. println (sb. toString ());

Stringsign = MD5Utils. MD5Encode (sb. toString (), "UTF-8"). toUpperCase ();

Returnsign;

}

PublicStringcreate_nonce_str (){

Stringchars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ";

Stringres = "";

For (inti = 0; I <32; I ++ ){

Randomrd = newRandom ();

Res + = chars. charAt (rd. nextInt (chars. length ()-1 ));

}

Returnres;

}

 

3. IOS client development

Import Development Kit

Add URL Types

Register an application in AppDelegate. m.

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# Import "AppDelegate. h"

# Import "XSTabBarViewController. h"

# Import

# Import "WXApi. h"

@ InterfaceAppDelegate ()

@ End

@ ImplementationAppDelegate

-(BOOL) application :( UIApplication *) applicationdidfinishlaunchingwitexceptions :( NSDictionary *) launchOptions {

// Overridepointforcustomizationafterapplicationlaunch.

// [NSThreadsleepForTimeInterval: 2.0];

// Enter the master controller

Self. window = [[uiappswalloc] init];

Self. window. frame = [UIScreenmainScreen]. bounds;

Self. window. rootViewController = [[XSTabBarViewControlleralloc] init];

[Self. windowmakeKeyAndVisible];

// Register an application.

[WXApiregisterApp: @ "wxfb96c2a9b531be26"];

ReturnYES;

}

-(Void) onResp :( BaseResp *) resp

{

// NSLog (@ "---- onResp % @", resp );

/*

ErrCodeERR_ OK = 0 (user consent)

ERR_AUTH_DENIED =-4 (the user rejects authorization)

ERR_USER_CANCEL =-2 (User canceled)

The code that the user exchanges for access_token is valid only when ErrCode is 0.

The identifier used by a state third-party program to identify the uniqueness of the request. It is passed in when a third-party program calls sendReq and is returned by the terminal. The length of the state string cannot exceed 1 K.

Current lang client language

Country user's current country information

*/

If ([respisKindOfClass: [SendAuthRespclass]) // determines whether the request is an authorization request. Otherwise, the request conflicts with the payment and other functions.

{

SendAuthResp * aresp = (SendAuthResp *) resp;

If (aresp. errCode = 0)

{

// NSLog (@ "code % @", aresp. code );

[[Nsnotifcencenterdefacenter] postNotificationName: @ "wechatDidLoginNotification" object: selfuserInfo :@{@ "code": aresp. code}];

}

} Else {// callback of the payment request

// Return the payment result. The actual payment result must be queried on the server.

NSString * strMsg = [NSStringstringWithFormat: @ "Payment result"];

NSString * respcode = @ "0 ";

Switch (resp. errCode ){

CaseWXSuccess:

StrMsg = @ "Payment result: successful! ";

// NSLog (@ "Payment successful-PaySuccess, retcode = % d", resp. errCode );

Respcode = @ "1 ";

Break;

Default:

StrMsg = [NSStringstringWithFormat: @ "Payment result: failed! Retcode = % d, retstr = % @ ", resp. errCode, resp. errStr];

// NSLog (@ "error, retcode = % d, retstr = % @", resp. errCode, resp. errStr );

Respcode = @ "0 ";

Break;

}

[[Nsnotifcencenterdefacenter] postNotificationName: @ "wechatDidPayNotification" object: selfuserInfo :@{@ "respcode": respcode}];

}

}

// The handling method before iOS9.0 is not guaranteed to be correct. If any error occurs, correct it.

-(BOOL) application :( UIApplication *) applicationopenURL :( NSURL *) urlsourceApplication :( NSString *) sourceApplicationannotation :( id) annotation

{

NSLog (@ "before iOS9.0 ");

Return [selfapplicationOpenURL: url];

}

-(BOOL) application :( UIApplication *) appopenURL :( NSURL *) urloptions :( NSDictionary *) options {

NSLog (@ "after iOS9.0 ");

Return [selfapplicationOpenURL: url];

}

-(BOOL) applicationOpenURL :( NSURL *) url

{

If ([[urlabsoluteString] rangeOfString: @ "wxfb96c2a9b531be26: // pay"]. location = 0 ){

Return [WXApihandleOpenURL: urldelegate: self];

}

If ([url. hostisEqualToString: @ "safepay"])

{

[[Alipaysdkdefaservice Service] processOrderWithPaymentResult: urlstandbyCallback: nil];

ReturnYES;

}

ReturnYES;

}

}

Receive payment notification in the Controller to be paid

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-(Void) viewDidLoad {

[SuperviewDidLoad];

// Receive payment notification

[[Nsnotificationcenterdefacenter] addObserver: selfselector: @ selector (wechatDidPayNotification :) name: @ "wechatDidPayNotification" object: nil];

}

Obtain unified orders from the server and pull up for payment

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-(Void) weixinPay

{

NSString * userUrlStr = [NSStringstringWithFormat: @ "% @? Sid =%@ & account =%@ & desc =%@ ", WX_PREPAY_URL, self. student. sid, self. payJinE, self. student. nid];

NSURL * url = [NSURLURLWithString: userUrlStr];

// NSLog (@ "userUrlStr = % @", userUrlStr );

NSURLRequest * request = [NSURLRequestrequestWithURL: url];

AFHTTPRequestOperation * operation = [[AFHTTPRequestOperationalloc] initWithRequest: request];

[MBProgressHUDshowMessage: @ "Jump in progress, please wait"];

[OperationsetCompletionBlockWithSuccess: ^ (AFHTTPRequestOperation * operation, NSDictionary * responseObject ){

[MBProgressHUDhideHUD];

// NSLog (@ "paid response =%@", operation. responseString );

NSData * JSONData = [operation. responseStringdataUsingEncoding: NSUTF8StringEncoding];

NSDictionary * userDict = [NSJSONSerializationJSONObjectWithData: JSONDataoptions: NSJSONReadingMutableLeaveserror: nil];

// Call the payment method

PayReq * request = [[PayReqalloc] init];

/** The id of the merchant applied for from caifu Tong */

Request. partnerId = [userDictobjectForKey: @ "partnerid"];

/** Pre-payment order */

Request. prepayId = [userDictobjectForKey: @ "prepayid"];

/** The data and signature entered by the merchant according to the caifu Tong document */

Request. package = [userDictobjectForKey: @ "package"];

/** Random string, anti-resend */

Request. nonceStr = [userDictobjectForKey: @ "noncestr"];

/** Timestamp, anti-resend */

Request. timeStamp = [[userDictobjectForKey: @ "timestamp"] intValue];

/** The seller signs the data based on the open platform Documentation */

Request. sign = [userDictobjectForKey: @ "sign"];

Self. sign = request. sign;

Self. ordnum = [userDictobjectForKey: @ "ordnum"];

[WXApisendReq: request];

} Failure: ^ (AFHTTPRequestOperation * operation, NSError * error ){

[MBProgressHUDhideHUD];

NSLog (@ "error! % @ ", Error );

}];

NSOperationQueue * queue = [[NSOperationQueuealloc] init];

[QueueaddOperation: operation];

}

// Payment result

-(Void) wechatDidPayNotification :( NSNotification *) notification

{

// NSLog (@ "wechatDidPayNotification ");

NSDictionary * nameDictionary = [icationicationuserinfo];

NSString * respcode = [nameDictionaryobjectForKey: @ "respcode"];

If ([respcodeisinclutostring: @ "1"]) {

// The payment is successful and the user information is updated

[SelfpayDidFinish];

} Else {

// Payment failed,

[SelfsetupAlertControllerWithTitle: @ "Payment result" messge: @ "this payment has not been completed. You can try again later! "Confirm: @" OK "];

}

}