服务器签名版本
官方已经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,确实是每个客户端不应该知道RAS密钥,也不需要每个客户端都写一遍签名的算法。
服务端接入流程文档:https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_3
商户系统和微信支付系统主要交互说明:
步骤1:用户在商户APP中选择商品,提交订单,选择微信支付。
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】。
步骤3:统一下单接口返回正常的prepay_id,再按签名规范重新生成签名后,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
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】
步骤5:商户后台接收支付通知。api参见【支付结果通知API】
步骤6:商户后台查询支付结果。,api参见【查询订单API】
1.导入SDK文件
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 这里要修改成商户自己的APPID
或者这样修改:
b.白名单
c.安全配置支持Http
当然这部分的配置,也可以通过修改XML来实现。
4.修改bitcode。
修改:
5.在AppDelegate 注册微信
导入#import "WXApiManager.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {//向微信注册wxd930ea5d5a258f4f[WXApi registerApp:@"wxb4ba3c02aa476ea1" withDescription:@"demo 2.0"];return YES; }- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]]; }- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]]; }
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。
//调起微信支付PayReq* req = [[[PayReq alloc] init]autorelease];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];
7.不管支付成功还是失败,结果会返回到WXApiManager--》onResp 方法下
switch (resp.errCode) {case WXSuccess:strMsg = @"支付结果:成功!";NSLog(@"支付成功-PaySuccess,retcode = %d", resp.errCode);break;default:strMsg = [NSString stringWithFormat:@"支付结果:失败!retcode = %d, retstr = %@", resp.errCode,resp.errStr];NSLog(@"错误,retcode = %d, retstr = %@", resp.errCode,resp.errStr);break;}
我们直接处理回调结果即可。
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,我们需要设置一下 -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
#import "WXApi.h" #import "payRequsestHandler.h"
2)实现微信代理
@interface AppDelegate ()<WXApiDelegate>@end
3)注册微信,及微信支付回调
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {// Override point for customization after application launch.//向微信注册[WXApi registerApp:APP_ID withDescription:@"demo 2.0"];return YES; }- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {return [WXApi handleOpenURL:url delegate:self]; }- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {return [WXApi handleOpenURL:url delegate:self]; }// 微信支付成功或者失败回调 -(void) onResp:(BaseResp*)resp {NSString *strMsg = [NSString stringWithFormat:@"errcode:%d", resp.errCode];NSString *strTitle;if([resp isKindOfClass:[SendMessageToWXResp class]]){strTitle = [NSString stringWithFormat:@"发送媒体消息结果"];}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!";NSLog(@"支付成功-PaySuccess,retcode = %d", resp.errCode);break;default:strMsg = [NSString stringWithFormat:@"支付结果:失败!retcode = %d, retstr = %@", resp.errCode,resp.errStr];NSLog(@"错误,retcode = %d, retstr = %@", resp.errCode,resp.errStr);break;}}UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];[alert show]; }
5.写方法直接在支付时调用
- (void)payForWechat {//创建支付签名对象payRequsestHandler *req = [[payRequsestHandler alloc] init];//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];NSMutableDictionary *dict = [req sendPay_demo];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{[self alert:@"提示信息" msg:[dict objectForKey:@"retmsg"]];}}else{[self alert:@"提示信息" msg:@"服务器返回错误,未获取到json对象"];} }//客户端提示信息 - (void)alert:(NSString *)title msg:(NSString *)msg {UIAlertView *alter = [[UIAlertView alloc] initWithTitle:title message:msg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];[alter show]; }