iOS开发---微信支付

在最前面，还是先感谢开发过程中一下两个帖子对自己的帮助，分享！！！

1. 使用微信支付SDK1.5版本的支付demo
2. 微信支付如果遇到跳转只有一个确定请看这里

为了公司的安全，这个版本的微信信息我没配置，不过，刚在网上找到个可以使用的，还是分享下，如下：

1. 木有微信信息配置的demo
2. 有微信信息配置的demo

1.向微信注册你的应用程序信息

我们的App由我们的项目经理搞定，具体我也不清楚

官方接入指南如下:

请到 开发者应用登记页面 进行登记，登记并选择移动应用进行设置后，将获得AppID，可立即用于开发。但应用登记完成后还需要提交审核，只有审核通过的应用才能正式发布使用。

2.下载微信终端SDK文件，项目中导入lib,SDKExport两个文件

下载路径（点iOS第二个）

2.1导进去SDK后需要完善一些配置，要不会报错

1. 导入必要的库
   导入必要类库
2. ARC和MRC配置，在后面添加-fno-objc-arc
   ARC和MRC配置
3. bitCode和HTTPS配置，iOS9后必须配置的
   bitCode和HTTPS配置指导

3.上代码，胜过千言万语

AppDelegate.m

#import "AppDelegate.h"
#import "ViewController.h"
#import "WXApi.h"
@interface AppDelegate ()<WXApiDelegate>

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    ViewController * vc = [[ViewController alloc]init];
    UINavigationController * nav = [[UINavigationController alloc]initWithRootViewController:vc];
    self.window.rootViewController = nav;
    [self.window makeKeyAndVisible];

    //向微信注册
    [WXApi registerApp:@"。。。。。。"];
    
    return YES;
}
#pragma mark 微信支付相关方法
-(void)onResp:(BaseResp *)resp{
    //如果第三方程序向微信发送了sendReq的请求，那么onResp会被回调。sendReq请求调用后，会切到微信终端程序界面
    NSString *strMsg=[NSString stringWithFormat:@"errcode:%d",resp.errCode];
    NSString *strTitle;
    if ([resp isKindOfClass:[PayResp class]]) {
        //支付返回结果，实际支付结果需要去微信服务器端查询
        strTitle=[NSString stringWithFormat:@"支付结果"];
        switch (resp.errCode) {
            case WXSuccess:
                strMsg=@"支付结果：成功！";
                break;
                
            default:
                strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];
                break;
        }
    }
    //支付成功后回调
    // http://210.22.129.138:8080/link/public/notifywechatcallback
    
    //下边先注释掉，以后会用得上
    //    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    //    [alert show];
}
-(void)onReq:(BaseReq *)req{
    //onReq是微信终端向第三方程序发起请求，要求第三方程序响应。第三方程序响应完后必须调用sendRsp返回。在调用sendRsp返回时，会切回到微信终端程序界面
}

ViewController.h

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController

@property (nonatomic,assign) int totalPrice;

@property (nonatomic,strong) NSString * orderName;

@end

ViewController.m

#import "ViewController.h"
#import "payRequsestHandler.h"
#import "WXApi.h"
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    UIButton * bt = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
    bt.backgroundColor = [UIColor redColor];
    [bt addTarget:self action:@selector(ButtonClicked) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:bt];
    
    self.totalPrice = 1;
    self.orderName = @"请叫我雷锋，哈哈";
}
-(void)ButtonClicked{
    [self pay];
}
- (void)pay
{
    payRequsestHandler *req = [payRequsestHandler alloc];
    //初始化支付签名对象
    [req init:APP_ID mch_id:MCH_ID];
    //设置密钥
    [req setKey:PARTNER_ID];
    
    
    //获取到实际调起微信支付的参数后，在app端调起支付
    int lastPrice=self.totalPrice*100;
    NSMutableDictionary *dict = [req sendPay_demo:self.orderName price:[NSString stringWithFormat:@"%d",lastPrice]];
    
    if(dict != nil){
        NSMutableString *retcode = [dict objectForKey:@"retcode"];
        if (retcode.intValue == 0){
            NSMutableString *stamp  = [dict objectForKey:@"timestamp"];
            
            //调起微信支付
            PayReq* req             = [[PayReq alloc] init];
            req.openID              = [dict objectForKey:@"appid"];
            req.partnerId           = [dict objectForKey:@"partnerid"];
            req.prepayId            = [dict objectForKey:@"prepayid"];
            req.nonceStr            = [dict objectForKey:@"noncestr"];
            req.timeStamp           = stamp.intValue;
            req.package             = [dict objectForKey:@"package"];
            req.sign                = [dict objectForKey:@"sign"];
            [WXApi sendReq:req];
            //日志输出
            NSLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",req.openID,req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
        }else{
            NSLog(@"提示信息:=%@",[dict objectForKey:@"retmsg"]);
            //            [self alert:@"提示信息" msg:[dict objectForKey:@"retmsg"]];
        }
    }else{
        NSLog(@"提示信息:-%@",@"服务器返回错误，未获取到json对象");
        //        [self alert:@"提示信息" msg:@"服务器返回错误，未获取到json对象"];
        //        }
        //    }else{
        //        [self alert:@"提示信息" msg:@"服务器返回错误"];
    }
}

payRequsestHandler.h

配置相关信息

// 账号帐户资料
//更改商户把相关参数后可测试

#define APP_ID          @"。。。。。。"               //APPID
#define APP_SECRET      @"。。。。。。" //appsecret
//商户号，填写商户对应参数
#define MCH_ID          @"。。。。。。"
//商户API密钥，填写相应参数
#define PARTNER_ID      @"。。。。。。"
//支付结果回调页面
#define NOTIFY_URL      @"http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php"
//获取服务器端支付数据地址（商户自定义）
#define SP_URL          @"http://wxpay.weixin.qq.com/pub_v2/app/app_pay.php"

修改下面的方法，后面有参数的一种是项目需要的

//签名实例测试（demo中的）
- ( NSMutableDictionary *)sendPay_demo;

//签名实例（实际需要的）
- ( NSMutableDictionary *)sendPay_demo:(NSString *)orderName price:(NSString *)price;

payRequsestHandler.m

- ( NSMutableDictionary *)sendPay_demo:(NSString *)orderName price:(NSString *)price{

    //订单标题，展示给用户
    NSString *order_name    = orderName;
    //订单金额,单位（分）
    NSString *order_price   = price;//1分钱测试
    
    //================================
    //预付单参数订单设置
    //================================
    srand( (unsigned)time(0) );
    NSString *noncestr  = [NSString stringWithFormat:@"%d", rand()];
    NSString *orderno   = [NSString stringWithFormat:@"%ld",time(0)];
    NSLog(@"%@",orderno);
    NSMutableDictionary *packageParams = [NSMutableDictionary dictionary];
    
    [packageParams setObject: appid             forKey:@"appid"];       //开放平台appid
    [packageParams setObject: mchid             forKey:@"mch_id"];      //商户号
    [packageParams setObject: @"APP-001"        forKey:@"device_info"]; //支付设备号或门店号
    [packageParams setObject: noncestr          forKey:@"nonce_str"];   //随机串
    [packageParams setObject: @"APP"            forKey:@"trade_type"];  //支付类型，固定为APP
    [packageParams setObject: order_name        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: @"196.168.1.1"    forKey:@"spbill_create_ip"];//发器支付的机器ip
    [packageParams setObject: order_price       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) {
        //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: appid        forKey:@"appid"];
        [signParams setObject: nonce_str    forKey:@"noncestr"];
        [signParams setObject: package      forKey:@"package"];
        [signParams setObject: mchid        forKey:@"partnerid"];
        [signParams setObject: time_stamp   forKey:@"timestamp"];
        [signParams setObject: prePayid     forKey:@"prepayid"];
        //[signParams setObject: @"MD5"       forKey:@"signType"];
        //生成签名
        NSString *sign  = [self createMd5Sign:signParams];
        
        //添加签名
        [signParams setObject: sign         forKey:@"sign"];
        
        [debugInfo appendFormat:@"第二步签名成功，sign＝%@\n",sign];
        
        //返回参数列表
        return signParams;
        
    }else{
        [debugInfo appendFormat:@"获取prepayid失败！\n"];
    }
    return nil;
}