iOS 微信支付 SDK版本1.7.5(2016年12月27日)

来源：互联网发布：linux的home目录编辑：程序博客网时间：2024/05/21 06:39

第一步: 导入微信SDK

第二步: 导入framework

第三步: 设置URL Types

第四步: 将微信加入跳转白名单(右键info.plist -> Open As -> Source Code)

<key>LSApplicationQueriesSchemes</key>
<array>
<string>wechat</string>
<string>weixin</string>
</array>

第五步: 在AppDelegate.m中引入包: #import"WXApi.h"

第六步: 注册微信: [WXApiregisterApp:WeChatAPPID]; (注: 如果使用友盟, 需要在微信注册之前注册)

注: 这步操作后运行, 如果是新建的项目可能会报这个错误

解决办法: 要在Build Settings -> Other Linker Flags 添加 -ObjC

第七步: 导入解析XML数据的类XMLReader

第八步: 创建一个PCH文件 Common.pch

定义三个宏

#define WeChatAppID @"xxxxxxxxxxxxx"// APPID
#define PartnerID @"xxxxx"//商户ID
#define APISignKey @"xxxxxxxx商户平台 -> 账户中心 -> API安全 -> API密钥, 设置密钥"// API私钥

第九步: ViewController.m中的代码

////  ViewController.m//  ZHWeChatPay////  Created by 周昊 on 2016/12/28.//  Copyright © 2016年 Cloud. All rights reserved.//#import "ViewController.h"#import "WXApi.h"#import <CommonCrypto/CommonDigest.h> // MD5加密需要导此包// ------------获取终端IP地址需要以下引入及定义#include <ifaddrs.h>#include <arpa/inet.h>#include <net/if.h>#define IOS_CELLULAR    @"pdp_ip0"#define IOS_WIFI        @"en0"#define IOS_VPN         @"utun0"#define IP_ADDR_IPv4    @"ipv4"#define IP_ADDR_IPv6    @"ipv6"// -------------#import "XMLReader.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        UIButton *payServerBtn = [UIButton buttonWithType:UIButtonTypeSystem];    [payServerBtn setTitle:@"包括服务器端操作的支付" forState:UIControlStateNormal];    [payServerBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [payServerBtn addTarget:self action:@selector(zh_weChatPayIncludeServer) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:payServerBtn];    [payServerBtn sizeToFit];    payServerBtn.frame = CGRectMake((self.view.frame.size.width - payServerBtn.frame.size.width) / 2.0, 200, payServerBtn.frame.size.width, payServerBtn.frame.size.height);        UIButton *payBtn = [UIButton buttonWithType:UIButtonTypeSystem];    [payBtn setTitle:@"微信支付" forState:UIControlStateNormal];    [payBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [payBtn addTarget:self action:@selector(zh_weChatPay) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:payBtn];    [payBtn sizeToFit];    payBtn.frame = CGRectMake((self.view.frame.size.width - payBtn.frame.size.width) / 2.0, CGRectGetMaxY(payServerBtn.frame) + 100, payBtn.frame.size.width, payBtn.frame.size.height);        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(zh_handleWeChatPayResult:) name:@"doWeChatPayResult" object:nil];}- (void)zh_handleWeChatPayResult:(NSNotification *)notification{    BaseResp *resp = notification.object;    switch (resp.errCode)    {        case WXSuccess:                        NSLog(@"支付成功");            break;                    default:                        NSLog(@"支付失败");            break;    }}#pragma mark - 微信支付(包括服务器端的操作)- (void)zh_weChatPayIncludeServer{    if (![WXApi isWXAppInstalled])    {        NSLog(@"未安装微信客户端");        return;    }    if (![WXApi isWXAppSupportApi])    {        NSLog(@"不支持微信支付");        return;    }    NSString *url = @"https://api.mch.weixin.qq.com/pay/unifiedorder"; // 请求腾讯服务器        // 拼接详细的订单数据    NSDictionary *postDict = [self zh_getProductArgs]; // 服务器端拼接数据及签名        // 拼接调用支付接口所需要的参数(拼接成XML格式)    NSString *string = [NSString stringWithFormat:@"<xml><sign>%@</sign><appid>%@</appid><body>%@</body><mch_id>%@</mch_id><nonce_str>%@</nonce_str><notify_url>%@</notify_url><out_trade_no>%@</out_trade_no><spbill_create_ip>%@</spbill_create_ip><total_fee>%d</total_fee><trade_type>APP</trade_type></xml>",[postDict objectForKey:@"sign"], WeChatAppID, [postDict objectForKey:@"body"], PartnerID, [postDict objectForKey:@"nonce_str"], [postDict objectForKey:@"notify_url"], [postDict objectForKey:@"out_trade_no"], [postDict objectForKey:@"spbill_create_ip"],[[postDict objectForKey:@"total_fee"] intValue]];            // 创建网络请求    NSURL *requestURL = [NSURL URLWithString:url];    NSMutableURLRequest *request  = [[NSMutableURLRequest alloc]initWithURL:requestURL];    [request setHTTPMethod:@"POST"];    [request setValue:@"application/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];    [request setHTTPBody:[string dataUsingEncoding:NSUTF8StringEncoding]];        NSHTTPURLResponse* urlResponse = nil;    NSError *error = [[NSError alloc] init];    NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&error];    NSString *result = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];        if ([urlResponse statusCode] >= 200 && [urlResponse statusCode] < 300)    {                NSError *error2 = [NSError alloc];                // 从腾讯服务器请求回来的数据将XML格式解析成字典        NSDictionary *xmlDict = [[XMLReader dictionaryForXMLString:result error:&error2] objectForKey:@"xml"];                // 调用支付接口        PayReq *payRequest = [[PayReq alloc]init];        payRequest.partnerId = [[xmlDict objectForKey:@"mch_id"] objectForKey:@"text"];        payRequest.prepayId = [[xmlDict objectForKey:@"prepay_id"] objectForKey:@"text"];        payRequest.package = @"Sign=WXPay";        payRequest.nonceStr = [[xmlDict objectForKey:@"nonce_str"] objectForKey:@"text"];        payRequest.timeStamp = [[NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]] intValue];                // 构造参数列表,再次签名        NSMutableDictionary *payDict = [NSMutableDictionary dictionary];        [payDict setObject:WeChatAppID forKey:@"appid"];        [payDict setObject:payRequest.nonceStr forKey:@"noncestr"];        [payDict setObject:payRequest.package forKey:@"package"];        [payDict setObject:payRequest.partnerId forKey:@"partnerid"];        [payDict setObject:payRequest.prepayId forKey:@"prepayid"];        [payDict setObject:[NSString stringWithFormat:@"%u", (unsigned int)payRequest.timeStamp]forKey:@"timestamp"];        payRequest.sign = [self zh_genSign:payDict];                [WXApi sendReq:payRequest];    }}// 构造预付订单参数列表- (NSDictionary *)zh_getProductArgs{    NSMutableDictionary *params = [NSMutableDictionary dictionary];        NSString *timeStamp = [NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]]; // 获取时间戳    NSString *nonceStr = [[self zh_md5:[NSString stringWithFormat:@"%d", arc4random() % 10000]] uppercaseString]; // 获取32位内的随机串, 防重发    // 获取商家对用户的唯一标识        NSString *outTradNo = [NSString stringWithFormat:@"%d", arc4random() % 10000];    NSString *out_trade_no= [NSString stringWithFormat:@"%@%@",timeStamp,outTradNo];//获取商户订单号        [params setObject:WeChatAppID forKey:@"appid"];//必填    [params setObject:nonceStr forKey:@"nonce_str"];//随机字符串，必填    [params setObject:@"APP" forKey:@"trade_type"]; //交易类型 必填    [params setObject:@"有逼格的程序员" forKey:@"body"];//商品描述，必填    [params setObject:@"这里是你本地接收回调通知的地址" forKey:@"notify_url"]; // 此处填可以让后台写个接口，如果支付成功，则微信后台调用此接口，返回yes,失败则返回no；    [params setObject:out_trade_no forKey:@"out_trade_no"];//商户订单号，必填    [params setObject:PartnerID forKey:@"mch_id"]; // 商户ID    [params setObject:[self zh_getIPAddress:YES] forKey:@"spbill_create_ip"];//终端ip，必填    [params setObject:@"1" forKey:@"total_fee"];    //签名    [params setObject:[self zh_genSign:params] forKey:@"sign"];        return params;}// 将字符串MD5加密- (NSString *)zh_md5:(NSString *)str{    // #import <CommonCrypto/CommonDigest.h> // MD5加密需要导此包    const char *cStr = str.UTF8String;    unsigned char digest[CC_MD5_DIGEST_LENGTH];    CC_MD5(cStr, strlen(cStr), digest);    NSMutableString *md5Str = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];    for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)    {        [md5Str appendFormat:@"%02x", digest[i]];    }    return md5Str;}// 签名- (NSString *)zh_genSign:(NSDictionary *)signParams{    // 排序    NSArray *keys = [signParams allKeys];    NSArray *sortedKeys = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {        return [obj1 compare:obj2 options:NSNumericSearch];    }];        // 生成    NSMutableString *sign = [NSMutableString string];    for (NSString *key in sortedKeys) {        [sign appendString:key];        [sign appendString:@"="];        [sign appendString:[signParams objectForKey:key]];        [sign appendString:@"&"];    }    [sign appendString:@"key="];    [sign appendString:APISignKey];// 注意:不能hardcode在客户端,建议genPackage这个过程都由服务器端完成        NSString *result = [[self zh_md5:sign] uppercaseString];        return result;}// 获取终端IP地址- (NSString *)zh_getIPAddress:(BOOL)preferIPv4{    /*     需要引入一下头文件及定义宏     #include <ifaddrs.h>     #include <arpa/inet.h>     #include <net/if.h>     #define IOS_CELLULAR    @"pdp_ip0"     #define IOS_WIFI        @"en0"     #define IOS_VPN         @"utun0"     #define IP_ADDR_IPv4    @"ipv4"     #define IP_ADDR_IPv6    @"ipv6"     */    NSArray *searchArray = preferIPv4 ?    @[ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :    @[ IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;        NSDictionary *addresses = [self zh_getIPAddresses];        __block NSString *address;    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)     {         address = addresses[key];         if(address) *stop = YES;     } ];    return address ? address : @"0.0.0.0";}- (NSDictionary *)zh_getIPAddresses{    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];    // retrieve the current interfaces - returns 0 on success    //  导入ifaddrs.h    struct ifaddrs *interfaces;    if(!getifaddrs(&interfaces))    {        // Loop through linked list of interfaces        struct ifaddrs *interface;        for(interface=interfaces; interface; interface=interface->ifa_next)        {            if(!(interface->ifa_flags & IFF_UP) || (interface->ifa_flags & IFF_LOOPBACK))            {                continue; // deeply nested code harder to read  IFF_UP需要导入头文件            }            const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;            if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6))            {                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];                char addrBuf[INET6_ADDRSTRLEN];                if(inet_ntop(addr->sin_family, &addr->sin_addr, addrBuf, sizeof(addrBuf)))                {                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, addr->sin_family == AF_INET ? IP_ADDR_IPv4 : IP_ADDR_IPv6];                    addresses[key] = [NSString stringWithUTF8String:addrBuf];                }            }        }        // Free memory        freeifaddrs(interfaces);    }    // The dictionary keys have the form "interface" "/" "ipv4 or ipv6"    return [addresses count] ? addresses : nil;}#pragma mark - 微信支付(不包括服务器, 正常的操作流程就需要这一个方法即可)- (void)zh_weChatPay{    if (![WXApi isWXAppInstalled])    {        NSLog(@"未安装微信客户端");        return;    }    if (![WXApi isWXAppSupportApi])    {        NSLog(@"不支持微信支付");        return;    }    // 此处的请求可以替换为AFNetworking的请求    NSString *urlString = @"http://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"; // 向自己的服务器请求订单生成预支付订单信息    NSURL *url = [NSURL URLWithString:urlString];    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];        [request setHTTPMethod:@"POST"];    // body: 商品描述    // out_trade_no: 商品订单流水号    // spbill_create_ip: 终端IP地址    // total_fee: 商品价格 单位: 分    NSString *outTradNo = [NSString stringWithFormat:@"%d", arc4random() % 10000];    NSString *out_trade_no= [NSString stringWithFormat:@"%@%@",[NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]],outTradNo]; // 随机生成商户订单号    NSString *bodyString = [NSString stringWithFormat:@"body=商品的描述&out_trade_no=%@&spbill_create_ip=%@&total_fee=1", out_trade_no, [self zh_getIPAddress:YES]];    NSData *bodyData = [bodyString dataUsingEncoding:NSUTF8StringEncoding];    [request setHTTPBody:bodyData];        NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];        NSDictionary *result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil];        if ([[NSString stringWithFormat:@"%@", result[@"opflag"]] isEqualToString:@"1"])    {                NSError *error = nil;        NSDictionary *xmlDict = [[XMLReader dictionaryForXMLString:result[@"weixinPost"] error:&error] objectForKey:@"xml"];                //调用支付接口        PayReq *payRequest = [[PayReq alloc]init];        payRequest.partnerId = [[xmlDict objectForKey:@"mch_id"] objectForKey:@"text"];        payRequest.prepayId = [[xmlDict objectForKey:@"prepay_id"] objectForKey:@"text"];        payRequest.package = @"Sign=WXPay";        payRequest.nonceStr = [[xmlDict objectForKey:@"nonce_str"] objectForKey:@"text"];        payRequest.timeStamp = [[NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]] intValue];                //构造参数列表,再次签名        NSMutableDictionary *payDict = [NSMutableDictionary dictionary];        [payDict setObject:WeChatAppID forKey:@"appid"];        [payDict setObject:payRequest.nonceStr forKey:@"noncestr"];        [payDict setObject:payRequest.package forKey:@"package"];        [payDict setObject:payRequest.partnerId forKey:@"partnerid"];        [payDict setObject:payRequest.prepayId forKey:@"prepayid"];        [payDict setObject:[NSString stringWithFormat:@"%u", (unsigned int)payRequest.timeStamp] forKey:@"timestamp"];        payRequest.sign = [self zh_genSign:payDict];                if ([WXApi sendReq:payRequest]) // 调起微信客户端支付        {            NSLog(@"调起微信支付成功!");        }        else        {            NSLog(@"调起微信支付失败!");        }    }    else    {        NSLog(@"调起微信支付失败!");    }}#pragma mark -- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];}@end

第十步: 在AppDelegate.m中添加支付完成回调, 此处会在回调中触发一个通知.

// NOTE: 8.0使用API接口- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation{    if ([url.host isEqualToString:@"pay"]) // 微信结果回调    {        return [WXApi handleOpenURL:url delegate:self];    }    return YES;}// NOTE: 9.0以后使用新API接口- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id> *)options{    if ([url.host isEqualToString:@"pay"]) // 微信结果回调    {        return [WXApi handleOpenURL:url delegate:self];    }    return YES;}// 微信支付- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url{    return  [WXApi handleOpenURL:url delegate:self];}- (void)onResp:(BaseResp *)resp{    if([resp isKindOfClass:[PayResp class]])    {        [[NSNotificationCenter defaultCenter] postNotificationName:@"doWeChatPayResult" object:resp];    }}

第十一步: 回调的时候需要触发一个代理, 签代理<WXApiDelegate>

第十二步: 在ViewController.m的viewDidLoad方法中注册通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(zh_handleWeChatPayResult:) name:@"doWeChatPayResult" object:nil];

第十三步: 通知触发方法, 做支付结果操作

- (void)zh_handleWeChatPayResult:(NSNotification *)notification{    BaseResp *resp = notification.object;    switch (resp.errCode)    {        case WXSuccess:                        NSLog(@"支付成功");            break;                    default:                        NSLog(@"支付失败");            break;    }}

最后附个demo地址: https://github.com/MrZhou1990/ZHWeChatPay.git

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