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<code class="hljs" objectivec="">//
// WechatPayManager.m
//
// Created by HuangCharlie on 5/24/15.
//
//
#import WechatPayManager.h
@implementation WechatPayManager
//初始化函數(shù)
-(id)initWithAppID:(NSString*)appID mchID:(NSString*)mchID spKey:(NSString*)key
{
self = [super init];
if(self)
{
//初始化私有參數(shù)，主要是一些和商戶有關(guān)的參數(shù)
self.payUrl = @https://api.mch.weixin.qq.com/pay/unifiedorder;
if (self.debugInfo == nil){
self.debugInfo = [NSMutableString string];
}
[self.debugInfo setString:@];
self.appId = appID;//微信分配給商戶的appID
self.mchId = mchID;//
self.spKey = key;//商戶的密鑰
}
return self;
}
//獲取debug信息
-(NSString*) getDebugInfo
{
NSString *res = [NSString stringWithString:self.debugInfo];
[self.debugInfo setString:@];
return res;
}
//創(chuàng)建package簽名
-(NSString*) createMd5Sign:(NSMutableDictionary*)dict
{
NSMutableString *contentString =[NSMutableString string];
NSArray *keys = [dict allKeys];
//按字母順序排序
NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
return [obj1 compare:obj2 options:NSNumericSearch];
}];
//拼接字符串
for (NSString *categoryId in sortedArray) {
if ( ![[dict objectForKey:categoryId] isEqualToString:@]
&& ![categoryId isEqualToString:@sign]
&& ![categoryId isEqualToString:@key]
)
{
[contentString appendFormat:@%@=%@&, categoryId, [dict objectForKey:categoryId]];
}
}
//添加key字段
[contentString appendFormat:@key=%@, self.spKey];
//得到MD5 sign簽名
NSString *md5Sign =[WXUtil md5:contentString];
//輸出Debug Info
[self.debugInfo appendFormat:@MD5簽名字符串：
%@
,contentString];
return md5Sign;
}
//獲取package帶參數(shù)的簽名包
-(NSString *)genPackage:(NSMutableDictionary*)packageParams
{
NSString *sign;
NSMutableString *reqPars=[NSMutableString string];
//生成簽名
sign = [self createMd5Sign:packageParams];
//生成xml的package
NSArray *keys = [packageParams allKeys];
[reqPars appendString:@<xml>
];
for (NSString *categoryId in keys) {
[reqPars appendFormat:@<%@>%@<!--%@-->
, categoryId, [packageParams objectForKey:categoryId],categoryId];
}
[reqPars appendFormat:@<sign>%@</sign>
</xml>, sign];
return [NSString stringWithString:reqPars];
}
//提交預(yù)支付
-(NSString *)sendPrepay:(NSMutableDictionary *)prePayParams
{
NSString *prepayid = nil;
//獲取提交支付
NSString *send = [self genPackage:prePayParams];
//輸出Debug Info
[self.debugInfo appendFormat:@API鏈接:%@
, self.payUrl];
[self.debugInfo appendFormat:@發(fā)送的xml:%@
, send];
//發(fā)送請求post xml數(shù)據(jù)
NSData *res = [WXUtil httpSend:self.payUrl method:@POST data:send];
//輸出Debug Info
[self.debugInfo appendFormat:@服務(wù)器返回：
%@
,[[NSString alloc] initWithData:res encoding:NSUTF8StringEncoding]];
XMLHelper *xml = [[XMLHelper alloc] autorelease];
//開始解析
[xml startParse:res];
NSMutableDictionary *resParams = [xml getDict];
//判斷返回
NSString *return_code = [resParams objectForKey:@return_code];
NSString *result_code = [resParams objectForKey:@result_code];
if ( [return_code isEqualToString:@SUCCESS] )
{
//生成返回數(shù)據(jù)的簽名
NSString *sign = [self createMd5Sign:resParams ];
NSString *send_sign =[resParams objectForKey:@sign] ;
//驗證簽名正確性
if( [sign isEqualToString:send_sign]){
if( [result_code isEqualToString:@SUCCESS]) {
//驗證業(yè)務(wù)處理狀態(tài)
prepayid = [resParams objectForKey:@prepay_id];
return_code = 0;
[self.debugInfo appendFormat:@獲取預(yù)支付交易標(biāo)示成功,！
];
}
}else{
self.lastErrCode = 1;
[self.debugInfo appendFormat:@gen_sign=%@
_sign=%@
,sign,send_sign];
[self.debugInfo appendFormat:@服務(wù)器返回簽名驗證錯誤！?。?/code>
];
}
}else{
self.lastErrCode = 2;
[self.debugInfo appendFormat:@接口返回錯誤?。,。?/code>
];
}
return prepayid;
}
- (NSMutableDictionary*)getPrepayWithOrderName:(NSString*)name
price:(NSString*)price
device:(NSString*)device
{
//訂單標(biāo)題,，展示給用戶
NSString* orderName = name;
//訂單金額,單位（分）
NSString* orderPrice = price;//以分為單位的整數(shù)
//支付設(shè)備號或門店號
NSString* orderDevice = device;
//支付類型,，固定為APP
NSString* orderType = @APP;
//發(fā)器支付的機(jī)器ip,暫時沒有發(fā)現(xiàn)其作用
NSString* orderIP = @196.168.1.1;
//隨機(jī)數(shù)串
srand( (unsigned)time(0) );
NSString *noncestr = [NSString stringWithFormat:@%d, rand()];
NSString *orderNO = [NSString stringWithFormat:@%ld,time(0)];
//================================
//預(yù)付單參數(shù)訂單設(shè)置
//================================
NSMutableDictionary *packageParams = [NSMutableDictionary dictionary];
[packageParams setObject: self.appId forKey:@appid]; //開放平臺appid
[packageParams setObject: self.mchId forKey:@mch_id]; //商戶號
[packageParams setObject: orderDevice forKey:@device_info]; //支付設(shè)備號或門店號
[packageParams setObject: noncestr forKey:@nonce_str]; //隨機(jī)串
[packageParams setObject: orderType forKey:@trade_type]; //支付類型，固定為APP
[packageParams setObject: orderName forKey:@body]; //訂單描述,，展示給用戶
[packageParams setObject: NOTIFY_URL forKey:@notify_url]; //支付結(jié)果異步通知
[packageParams setObject: orderNO forKey:@out_trade_no];//商戶訂單號
[packageParams setObject: orderIP forKey:@spbill_create_ip];//發(fā)器支付的機(jī)器ip
[packageParams setObject: orderPrice forKey:@total_fee]; //訂單金額,，單位為分
//獲取prepayId（預(yù)支付交易會話標(biāo)識）
NSString *prePayid;
prePayid = [self sendPrepay:packageParams];
if(prePayid == nil)
{
[self.debugInfo appendFormat:@獲取prepayid失敗,！
];
return nil;
}
//獲取到prepayid后進(jìn)行第二次簽名
NSString *package, *time_stamp, *nonce_str;
//設(shè)置支付參數(shù)
time_t now;
time(&now);
time_stamp = [NSString stringWithFormat:@%ld, now];
nonce_str = [WXUtil md5:time_stamp];
//重新按提交格式組包,，微信客戶端暫只支持package=Sign=WXPay格式，須考慮升級后支持?jǐn)y帶package具體參數(shù)的情況
//package = [NSString stringWithFormat:@Sign=%@,package];
package = @Sign=WXPay;
//第二次簽名參數(shù)列表
NSMutableDictionary *signParams = [NSMutableDictionary dictionary];
[signParams setObject: self.appId forKey:@appid];
[signParams setObject: self.mchId forKey:@partnerid];
[signParams setObject: nonce_str forKey:@noncestr];
[signParams setObject: package forKey:@package];
[signParams setObject: time_stamp forKey:@timestamp];
[signParams setObject: prePayid forKey:@prepayid];
//生成簽名
NSString *sign = [self createMd5Sign:signParams];
//添加簽名
[signParams setObject: sign forKey:@sign];
[self.debugInfo appendFormat:@第二步簽名成功,，sign＝%@
,sign];
//返回參數(shù)列表
return signParams;
}
@end</code>
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