payRequestHandler.m
如果比较看重命名规范的OC程序猿，就会觉得这个payRequestHandler类非常别扭，不符合camel命名规则，而且handler这个词更偏向于c++风格。我就以这个类为原型，重构了一下，并改装成一个传参的方法，供自己的APP调用。APP里面卖商品，一般就是商品名字，价格两个关键参数。所以这个重构的方法也只是提供这两个参数的接口。
ApiXml.h && ApiXml.m && WXUtil.h && WXUtil.m不变
<code class="hljs" objectivec="">//
// WechatPayManager.h
//
// Created by HuangCharlie on 5/24/15.
//
//
#import <foundation foundation.h="">
#import WXUtil.h
#import ApiXml.h
#import WXApi.h
// 账号帐户资料
// 更改商户把相关参数后可测试
#define APP_ID @wx@@@@@@@@@@@@@@@@ //APPID
#define APP_SECRET @ //appsecret,看起来好像没用
//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 @12345678901234567890123456789012
//支付结果回调页面
#define NOTIFY_URL @http://www.easck.com/pub_v2/pay/notify.v2.php
//获取服务器端支付数据地址（商户自定义）(在小吉这里，签名算法直接放在APP端，故不需要自定义)
#define SP_URL @http://www.easck.com/pub_v2/app/app_pay.php
@interface WechatPayManager : NSObject
{
}
//预支付网关url地址
@property (nonatomic,strong) NSString* payUrl;
//debug信息
@property (nonatomic,strong) NSMutableString *debugInfo;
@property (nonatomic,assign) NSInteger lastErrCode;//返回的错误码
//商户关键信息
@property (nonatomic,strong) NSString *appId,*mchId,*spKey;
//初始化函数
-(id)initWithAppID:(NSString*)appID
mchID:(NSString*)mchID
spKey:(NSString*)key;
//获取当前的debug信息
-(NSString *) getDebugInfo;
//获取预支付订单信息（核心是一个prepayID）
- (NSMutableDictionary*)getPrepayWithOrderName:(NSString*)name
price:(NSString*)price
device:(NSString*)device;
@end
</foundation></code>
<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://www.easck.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>
