ios 微信支付

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


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];
}