Control文件夹下的WXApiManager.h和WXApiManager.m
libWeChatSDK.a
WXApi.h
WXApiObject.h

//微信支付
#import "WXApi.h"
#import "WXApiObject.h"
#import "WXApiManager.h"

identifier 设置为 weixin
URL Schemes 设置为你app微信开放平台上的appid

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {//微信支付WXApi.registerApp("你的APPID ");
}func application(application: UIApplication, handleOpenURL url: NSURL) -> Bool {return WXApi.handleOpenURL(url, delegate: WXApiManager.sharedManager());//return UMSocialSnsService.handleOpenURL(url);
}//这里演示多个共存的处理方法，其中中间是和微信有关的
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {//支付宝支付if(sourceApplication!.containsString("com.alipay.iphoneclient")){AlipaySDK.defaultService().processOrderWithPaymentResult(url, standbyCallback: nil)return true;}//微信支付else if(sourceApplication!.containsString("com.tencent.xin")){return WXApi.handleOpenURL(url, delegate: WXApiManager.sharedManager());}//友盟分享else{return UMSocialSnsService.handleOpenURL(url);}
}

appid (微信开放平台中获取)
partnerId (商户ID，在商户平台获取)
API_KEY (API密钥，在商户平台设置)

let req = PayReq();
req.partnerId = LoadData.WX_PARTNERID;//商户ID
req.prepayId = prepayId;//预支付ID
req.nonceStr = nonceStr;//和第一步一样的随机数
req.timeStamp = UInt32(NSDate(timeIntervalSinceNow: 0).timeIntervalSince1970);//时间戳
req.package = "Sign=WXPay";//固定值var dic:[String:String] = [:];
dic["appid"] = LoadData.WX_APPID;//APPID
dic["partnerid"] = LoadData.WX_PARTNERID;//商户ID
dic["prepayid"] = prepayId;
dic["package"] = "Sign=WXPay";
dic["noncestr"] = req.nonceStr;
dic["timestamp"] = "(req.timeStamp)";//下面参数中的key是 API密钥
let sign = ZJ_WXPayUtils.getSign(dic, key: LoadData.WX_APIKEY);//获取签名
req.sign = sign;
WXApi.sendReq(req);

import Foundation
import CryptoSwiftclass ZJ_WXPayUtils{static var xiadanUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";static var appid = "";//公众账号IDstatic var mch_id = "";//商户号static var nonce_str = "";//随机字符串static var sign = "";//签名static var body = "";//商品描述static var out_trade_no = "";//商户订单号static var total_fee:Int = 0;//总金额 单位为分static var spbill_create_ip = "";//终端IPstatic var notify_url = "";//通知地址static var trade_type = "JSAPI";//交易类型///获取随机数 包括from  包括tostatic func getRandomNum(from:Int,to:Int) -> Int{let result = Int(from + (Int(arc4random()) % (to - from + 1)));return result;}static func getSign(dic:Dictionary<String,String>,key:String) -> String{var sign = "";let dicNew = dic.sort { (a, b) -> Bool inreturn a.0 < b.0;}sign = getQueryStrByDic(dicNew);sign += "&key=(key)";sign = sign.md5().uppercaseString;return sign;}static func getQueryStrByDic(dic:[(String,String)])->String{var pars = "";for (index, element) in dic.enumerate() {if(index == 0){pars += "(element.0)=(element.1)";}else{pars += "&(element.0)=(element.1)";}}return pars;}}

pod 'CryptoSwift'