iOS微信支付

时间 2019-11-18

标签 ios 微信支付栏目 iOS 繁體版

原文原文链接

SDK接入

服务器签名版本

官方已是建议使用服务器签名来接入微信支付，实际上从安全上考虑，确实是每一个客户端不该该知道RAS密钥，也不须要每一个客户端都写一遍签名的算法。php

服务端接入流程文档：https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_3算法

商户系统和微信支付系统主要交互说明：sql

步骤1：用户在商户APP中选择商品，提交订单，选择微信支付。json

步骤2：商户后台收到用户支付单，调用微信支付统一下单接口。参见【统一下单API】。api

步骤3：统一下单接口返回正常的prepay_id，再按签名规范从新生成签名后，将数据传输给APP。参与签名的字段名为appId，partnerId，prepayId，nonceStr，timeStamp，package。注意：package的值格式为Sign=WXPay安全

步骤4：商户APP调起微信支付。api参见本章节【app端开发步骤说明】服务器

步骤5：商户后台接收支付通知。api参见【支付结果通知API】微信

步骤6：商户后台查询支付结果。，api参见【查询订单API】app

1.导入SDK文件ide

2.导入相关的系统库及文件。不导入会报错。

SystemConfiguration.framework
libz.tbd
libsqlite3.0.tbd
CoreTelephony.framework

3.配置info.plist

a.schemes ，注意，item0 这里要修改为商户本身的APPID

或者这样修改：

b.白名单

c.安全配置支持Http

固然这部分的配置，也能够经过修改XML来实现。

4.修改bitcode。

修改：

5.在AppDelegate 注册微信

导入#import "WXApiManager.h"

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 2     //向微信注册wxd930ea5d5a258f4f
 3     [WXApi registerApp:@"wxb4ba3c02aa476ea1" withDescription:@"demo 2.0"];
 4     
 5     return YES;
 6 }
 7 
 8 - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
 9     return  [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
10 }
11 
12 - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
13     return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
14 }

6.接下来，就是发起请求支付了，实现上核心代码只有几行。

这部分代码在demo的WXApiRequestHandler--》jumpToBizPay 里。

1   // 调起微信支付
2   PayReq* req             = [[[PayReq alloc] init]autorelease];
3   req.partnerId           = [dict objectForKey:@"partnerid"];
4   req.prepayId            = [dict objectForKey:@"prepayid"];
5   req.nonceStr            = [dict objectForKey:@"noncestr"];
6   req.timeStamp           = stamp.intValue;
7   req.package             = [dict objectForKey:@"package"];
8   req.sign                = [dict objectForKey:@"sign"];
9   [WXApi sendReq:req];

7.无论支付成功仍是失败，结果会返回到WXApiManager--》onResp 方法下

 1 switch (resp.errCode) {
 2             case WXSuccess:
 3                 strMsg = @"支付结果：成功！";
 4                 NSLog(@"支付成功－PaySuccess，retcode = %d", resp.errCode);
 5                 break;
 6                 
 7             default:
 8                 strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];
 9                 NSLog(@"错误，retcode = %d, retstr = %@", resp.errCode,resp.errStr);
10                 break;
11         }

咱们直接处理回调结果便可。

客户端进行签名

1.导入文件。官方已经不提供这个SDK的下载了，我已经打包到源代码了，2015年3月11号最新修改的版本

2.里面有两个文件是非arc的，咱们须要设置一下 -fno-objc-arc

3.导入系统库及info.list配置，请参数上面服务端签名。

4.AppDelegate配置

1）导入头文件

1 #import "WXApi.h"
2 #import "payRequsestHandler.h"

2）实现微信代理

1 @interface AppDelegate ()<WXApiDelegate>
2 
3 @end

3）注册微信，及微信支付回调

 1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 2     // Override point for customization after application launch.
 3     //向微信注册
 4     [WXApi registerApp:APP_ID withDescription:@"demo 2.0"];
 5     
 6     return YES;
 7 }
 8 
 9 - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
10 {
11     return  [WXApi handleOpenURL:url delegate:self];
12 }
13 
14 - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
15 {
16     return  [WXApi handleOpenURL:url delegate:self];
17 }
18 
19 // 微信支付成功或者失败回调
20 -(void) onResp:(BaseResp*)resp
21 {
22     NSString *strMsg = [NSString stringWithFormat:@"errcode:%d", resp.errCode];
23     NSString *strTitle;
24     
25     if([resp isKindOfClass:[SendMessageToWXResp class]])
26     {
27         strTitle = [NSString stringWithFormat:@"发送媒体消息结果"];
28     }
29     if([resp isKindOfClass:[PayResp class]]){
30         // 支付返回结果，实际支付结果须要去微信服务器端查询
31         strTitle = [NSString stringWithFormat:@"支付结果"];
32         
33         switch (resp.errCode) {
34             case WXSuccess:
35                 strMsg = @"支付结果：成功！";
36                 NSLog(@"支付成功－PaySuccess，retcode = %d", resp.errCode);
37                 break;
38                 
39             default:
40                 strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];
41                 NSLog(@"错误，retcode = %d, retstr = %@", resp.errCode,resp.errStr);
42                 break;
43         }
44     }
45     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
46     [alert show];
47 }

5.写方法直接在支付时调用

 1 - (void)payForWechat
 2 {
 3     // 建立支付签名对象
 4     payRequsestHandler *req = [[payRequsestHandler alloc] init];
 5     // 初始化支付签名对象
 6     [req init:APP_ID mch_id:MCH_ID];
 7     // 设置密钥
 8     [req setKey:PARTNER_ID];
 9     
10     NSMutableDictionary *dict = [req sendPay_demo];
11     
12     if(dict != nil){
13         NSMutableString *retcode = [dict objectForKey:@"retcode"];
14         if (retcode.intValue == 0){
15             NSMutableString *stamp  = [dict objectForKey:@"timestamp"];
16             
17             // 调起微信支付
18             PayReq* req             = [[PayReq alloc] init];
19             req.openID              = [dict objectForKey:@"appid"];
20             req.partnerId           = [dict objectForKey:@"partnerid"];
21             req.prepayId            = [dict objectForKey:@"prepayid"];
22             req.nonceStr            = [dict objectForKey:@"noncestr"];
23             req.timeStamp           = stamp.intValue;
24             req.package             = [dict objectForKey:@"package"];
25             req.sign                = [dict objectForKey:@"sign"];
26             [WXApi sendReq:req];
27             //日志输出
28             NSLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",req.openID,req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
29         }else{
30             [self alert:@"提示信息" msg:[dict objectForKey:@"retmsg"]];
31         }
32     }else{
33         [self alert:@"提示信息" msg:@"服务器返回错误，未获取到json对象"];
34     }
35 }
36 
37 // 客户端提示信息
38 - (void)alert:(NSString *)title msg:(NSString *)msg
39 {
40     UIAlertView *alter = [[UIAlertView alloc] initWithTitle:title message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
41     
42     [alter show];
43 }