<code class="hljs" objectivec="">//// WechatPayManager.m//// Created by HuangCharlie on 5/24/15.////#import WechatPayManager.h@implementation WechatPayManager//初始化函数-(id)initWithAppID:(NSString*)appID mchID:(NSString*)mchID spKey:(NSString*)key{ self = [super init]; if(self) { //初始化私有参数，主要是一些和商户有关的参数 self.payUrl = @https://api.mch.weixin.qq.com/pay/unifiedorder; if (self.debugInfo == nil){ self.debugInfo = [NSMutableString string]; } [self.debugInfo setString:@]; self.appId = appID;//微信分配给商户的appID self.mchId = mchID;// self.spKey = key;//商户的密钥 } return self;}//获取debug信息-(NSString*) getDebugInfo{ NSString *res = [NSString stringWithString:self.debugInfo]; [self.debugInfo setString:@]; return res;}//创建package签名-(NSString*) createMd5Sign:(NSMutableDictionary*)dict{ NSMutableString *contentString =[NSMutableString string]; NSArray *keys = [dict allKeys]; //按字母顺序排序 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签名 NSString *md5Sign =[WXUtil md5:contentString]; //输出Debug Info [self.debugInfo appendFormat:@MD5签名字符串：%@,contentString]; return md5Sign;}//获取package带参数的签名包-(NSString *)genPackage:(NSMutableDictionary*)packageParams{ NSString *sign; NSMutableString *reqPars=[NSMutableString string]; //生成签名 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];}//提交预支付-(NSString *)sendPrepay:(NSMutableDictionary *)prePayParams{ NSString *prepayid = nil; //获取提交支付 NSString *send = [self genPackage:prePayParams]; //输出Debug Info [self.debugInfo appendFormat:@API链接:%@, self.payUrl]; [self.debugInfo appendFormat:@发送的xml:%@, send]; //发送请求post xml数据 NSData *res = [WXUtil httpSend:self.payUrl method:@POST data:send]; //输出Debug Info [self.debugInfo appendFormat:@服务器返回：%@,[[NSString alloc] initWithData:res encoding:NSUTF8StringEncoding]]; XMLHelper *xml = [[XMLHelper alloc] autorelease]; //开始解析 [xml startParse:res]; NSMutableDictionary *resParams = [xml getDict]; //判断返回 NSString *return_code = [resParams objectForKey:@return_code]; NSString *result_code = [resParams objectForKey:@result_code]; if ( [return_code isEqualToString:@SUCCESS] ) { //生成返回数据的签名 NSString *sign = [self createMd5Sign:resParams ]; NSString *send_sign =[resParams objectForKey:@sign] ; //验证签名正确性 if( [sign isEqualToString:send_sign]){ if( [result_code isEqualToString:@SUCCESS]) { //验证业务处理状态 prepayid = [resParams objectForKey:@prepay_id]; return_code = 0; [self.debugInfo appendFormat:@获取预支付交易标示成功！]; } }else{ self.lastErrCode = 1; [self.debugInfo appendFormat:@gen_sign=%@ _sign=%@,sign,send_sign]; [self.debugInfo appendFormat:@服务器返回签名验证错误！！！]; } }else{ self.lastErrCode = 2; [self.debugInfo appendFormat:@接口返回错误！！！]; } return prepayid;}- (NSMutableDictionary*)getPrepayWithOrderName:(NSString*)name price:(NSString*)price device:(NSString*)device{ //订单标题，展示给用户 NSString* orderName = name; //订单金额,单位（分） NSString* orderPrice = price;//以分为单位的整数 //支付设备号或门店号 NSString* orderDevice = device; //支付类型，固定为APP NSString* orderType = @APP; //发器支付的机器ip,暂时没有发现其作用 NSString* orderIP = @196.168.1.1; //随机数串 srand( (unsigned)time(0) ); NSString *noncestr = [NSString stringWithFormat:@%d, rand()]; NSString *orderNO = [NSString stringWithFormat:@%ld,time(0)]; //================================ //预付单参数订单设置 //================================ NSMutableDictionary *packageParams = [NSMutableDictionary dictionary]; [packageParams setObject: self.appId forKey:@appid]; //开放平台appid [packageParams setObject: self.mchId forKey:@mch_id]; //商户号 [packageParams setObject: orderDevice forKey:@device_info]; //支付设备号或门店号 [packageParams setObject: noncestr forKey:@nonce_str]; //随机串 [packageParams setObject: orderType forKey:@trade_type]; //支付类型，固定为APP [packageParams setObject: orderName forKey:@body]; //订单描述，展示给用户 [packageParams setObject: NOTIFY_URL forKey:@notify_url]; //支付结果异步通知 [packageParams setObject: orderNO forKey:@out_trade_no];//商户订单号 [packageParams setObject: orderIP forKey:@spbill_create_ip];//发器支付的机器ip [packageParams setObject: orderPrice forKey:@total_fee]; //订单金额，单位为分 //获取prepayId（预支付交易会话标识） NSString *prePayid; prePayid = [self sendPrepay:packageParams]; if(prePayid == nil) { [self.debugInfo appendFormat:@获取prepayid失败！]; return nil; } //获取到prepayid后进行第二次签名 NSString *package, *time_stamp, *nonce_str; //设置支付参数 time_t now; time(&now); time_stamp = [NSString stringWithFormat:@%ld, now]; nonce_str = [WXUtil md5:time_stamp]; //重新按提交格式组包，微信客户端暂只支持package=Sign=WXPay格式，须考虑升级后支持携带package具体参数的情况 //package = [NSString stringWithFormat:@Sign=%@,package]; package = @Sign=WXPay; //第二次签名参数列表 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]; //生成签名 NSString *sign = [self createMd5Sign:signParams]; //添加签名 [signParams setObject: sign forKey:@sign]; [self.debugInfo appendFormat:@第二步签名成功，sign＝%@,sign]; //返回参数列表 return signParams;}@end</code>联系客服
