<code
class
=
"hljs"
objectivec=
""
>
//
// WechatPayManager.m
//
// Created by HuangCharlie on 5/24/15.
//
//
#
import
WechatPayManager.h
@implementation
WechatPayManager
//初始化函数
-(id)initWithAppID:(NSString*)appID mchID:(NSString*)mchID spKey:(NSString*)key
{
self = [
super
init];
if
(self)
{
//初始化私有参数,主要是一些和商户有关的参数
self.payUrl =
@https
:
//api.mch.weixin.qq.com/pay/unifiedorder;
if
(self.debugInfo == nil){
self.debugInfo = [NSMutableString string];
}
[self.debugInfo setString:@];
self.appId = appID;
//微信分配给商户的appID
self.mchId = mchID;
//
self.spKey = key;
//商户的密钥
}
return
self;
}
//获取debug信息
-(NSString*) getDebugInfo
{
NSString *res = [NSString stringWithString:self.debugInfo];
[self.debugInfo setString:@];
return
res;
}
//创建package签名
-(NSString*) createMd5Sign:(NSMutableDictionary*)dict
{
NSMutableString *contentString =[NSMutableString string];
NSArray *keys = [dict allKeys];
//按字母顺序排序
NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
return
[obj1 compare:obj2 options:NSNumericSearch];
}];
//拼接字符串
for
(NSString *categoryId in sortedArray) {
if
( ![[dict objectForKey:categoryId] isEqualToString:@]
&& ![categoryId isEqualToString:
@sign
]
&& ![categoryId isEqualToString:
@key
]
)
{
[contentString appendFormat:@%@=%@&, categoryId, [dict objectForKey:categoryId]];
}
}
//添加key字段
[contentString appendFormat:
@key
=%@, self.spKey];
//得到MD5 sign签名
NSString *md5Sign =[WXUtil md5:contentString];
//输出Debug Info
[self.debugInfo appendFormat:
@MD5
签名字符串:
%@
,contentString];
return
md5Sign;
}
//获取package带参数的签名包
-(NSString *)genPackage:(NSMutableDictionary*)packageParams
{
NSString *sign;
NSMutableString *reqPars=[NSMutableString string];
//生成签名
sign = [self createMd5Sign:packageParams];
//生成xml的package
NSArray *keys = [packageParams allKeys];
[reqPars appendString:@<xml>
];
for
(NSString *categoryId in keys) {
[reqPars appendFormat:@<%@>%@<!--%@-->
, categoryId, [packageParams objectForKey:categoryId],categoryId];
}
[reqPars appendFormat:@<sign>%@</sign>
</xml>, sign];
return
[NSString stringWithString:reqPars];
}
//提交预支付
-(NSString *)sendPrepay:(NSMutableDictionary *)prePayParams
{
NSString *prepayid = nil;
//获取提交支付
NSString *send = [self genPackage:prePayParams];
//输出Debug Info
[self.debugInfo appendFormat:
@API
链接:%@
, self.payUrl];
[self.debugInfo appendFormat:@发送的xml:%@
, send];
//发送请求post xml数据
NSData *res = [WXUtil httpSend:self.payUrl method:
@POST
data:send];
//输出Debug Info
[self.debugInfo appendFormat:@服务器返回:
%@
,[[NSString alloc] initWithData:res encoding:NSUTF8StringEncoding]];
XMLHelper *xml = [[XMLHelper alloc] autorelease];
//开始解析
[xml startParse:res];
NSMutableDictionary *resParams = [xml getDict];
//判断返回
NSString *return_code = [resParams objectForKey:
@return_code
];
NSString *result_code = [resParams objectForKey:
@result_code
];
if
( [return_code isEqualToString:
@SUCCESS
] )
{
//生成返回数据的签名
NSString *sign = [self createMd5Sign:resParams ];
NSString *send_sign =[resParams objectForKey:
@sign
] ;
//验证签名正确性
if
( [sign isEqualToString:send_sign]){
if
( [result_code isEqualToString:
@SUCCESS
]) {
//验证业务处理状态
prepayid = [resParams objectForKey:
@prepay_id
];
return_code =
0
;
[self.debugInfo appendFormat:@获取预支付交易标示成功!
];
}
}
else
{
self.lastErrCode =
1
;
[self.debugInfo appendFormat:
@gen_sign
=%@
_sign=%@
,sign,send_sign];
[self.debugInfo appendFormat:@服务器返回签名验证错误!!!
];
}
}
else
{
self.lastErrCode =
2
;
[self.debugInfo appendFormat:@接口返回错误!!!
];
}
return
prepayid;
}
- (NSMutableDictionary*)getPrepayWithOrderName:(NSString*)name
price:(NSString*)price
device:(NSString*)device
{
//订单标题,展示给用户
NSString* orderName = name;
//订单金额,单位(分)
NSString* orderPrice = price;
//以分为单位的整数
//支付设备号或门店号
NSString* orderDevice = device;
//支付类型,固定为APP
NSString* orderType =
@APP
;
//发器支付的机器ip,暂时没有发现其作用
NSString* orderIP =
@196
.168.
1.1
;
//随机数串
srand( (unsigned)time(
0
) );
NSString *noncestr = [NSString stringWithFormat:@%d, rand()];
NSString *orderNO = [NSString stringWithFormat:@%ld,time(
0
)];
//================================
//预付单参数订单设置
//================================
NSMutableDictionary *packageParams = [NSMutableDictionary dictionary];
[packageParams setObject: self.appId forKey:
@appid
];
//开放平台appid
[packageParams setObject: self.mchId forKey:
@mch_id
];
//商户号
[packageParams setObject: orderDevice forKey:
@device_info
];
//支付设备号或门店号
[packageParams setObject: noncestr forKey:
@nonce_str
];
//随机串
[packageParams setObject: orderType forKey:
@trade_type
];
//支付类型,固定为APP
[packageParams setObject: orderName 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: orderIP forKey:
@spbill_create_ip
];
//发器支付的机器ip
[packageParams setObject: orderPrice 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)
{
[self.debugInfo appendFormat:@获取prepayid失败!
];
return
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: self.appId forKey:
@appid
];
[signParams setObject: self.mchId forKey:
@partnerid
];
[signParams setObject: nonce_str forKey:
@noncestr
];
[signParams setObject:
package
forKey:
@package
];
[signParams setObject: time_stamp forKey:
@timestamp
];
[signParams setObject: prePayid forKey:
@prepayid
];
//生成签名
NSString *sign = [self createMd5Sign:signParams];
//添加签名
[signParams setObject: sign forKey:
@sign
];
[self.debugInfo appendFormat:@第二步签名成功,sign=%@
,sign];
//返回参数列表
return
signParams;
}
@end
</code>