Params

<pre>
1.应用APPID
2.微信支付商户号
3.微信支付商户密钥
</pre>

CS_XML

字符：

<pre>
<xml>
<appid>应用APPID</appid>
<body>公司-描述</body>
<mch_id>微信支付商户号</mch_id>
<nonce_str>VVA6TKJMECEJDDCSI0M04SI73S9IDKO8</nonce_str>
<notify_url>http://www.weixin.qq.com/wxpay/pay.php</notify_url>
<out_trade_no>1499224427384612</out_trade_no>
<spbill_create_ip>10.50.45.40</spbill_create_ip>
<total_fee>1</total_fee>
<trade_type>APP</trade_type>
<sign>E458129168DADC4E0CC5EDB738CF89C9</sign>
</xml>
</pre>

请求

<pre>
//预付单与查询订单请求
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]
initWithURL: [NSURL URLWithString:requestType==wxPay?@"https://api.mch.weixin.qq.com/pay/unifiedorder":@"https://api.mch.weixin.qq.com/pay/orderquery"]
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:12];

[request setHTTPMethod:@"POST"];

[request addValue:@"text/xml" forHTTPHeaderField:@"Content-Type"];

[request setValue:@"UTF-8" forHTTPHeaderField:@"charset"];

[request setHTTPBody:[xml dataUsingEncoding:NSUTF8StringEncoding]];

NSURLSessionDataTask * dataTask = [[NSURLSession sharedSession]
                                   dataTaskWithRequest:request
                                   completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {

//亲,你的代码
}];
[dataTask resume];
</pre>

解析

<pre>
//H文件

import <Foundation/Foundation.h>

@interface HDXmlParser : NSObject<NSXMLParserDelegate>
{
NSXMLParser* xmlParser;
NSMutableString* valBuffer;
NSMutableDictionary* dictionary;
NSError* lastError;
}

/** xml解析 */

(NSDictionary)parseData:(NSData)data;

@end
##########华丽分割线#########
//M文件

import "HDXmlParser.h"

@implementation HDXmlParser

(NSDictionary)parseData:(NSData)data
{
HDXmlParser* parser = [[HDXmlParser alloc] init];
return [parser parseData:data];
}

(NSDictionary)parseData:(NSData)data
{
lastError = nil;
dictionary = [NSMutableDictionary new];
valBuffer = [NSMutableString string];
xmlParser = [[NSXMLParser alloc] initWithData:data];
[xmlParser setDelegate:self];
[xmlParser parse];
if(lastError)
return nil;
return [dictionary copy];
}
(void)parser:(NSXMLParser)parser foundCharacters:(NSString)string{
[valBuffer setString:string];
}
(void)parser:(NSXMLParser)parser
didEndElement:(NSString)elementName
namespaceURI:(NSString)namespaceURI
qualifiedName:(NSString)qName{

if([valBuffer isEqualToString:@"\n"]==NO &&
[elementName isEqualToString:@"root"]==NO)
{
[dictionary setObject:[valBuffer copy] forKey:elementName];
}
}
(void)parser:(NSXMLParser)parser parseErrorOccurred:(NSError)parseError
{
lastError = parseError;
}
(void)parser:(NSXMLParser)parser validationErrorOccurred:(NSError)validationError
{
lastError = validationError;
}

@end
</pre>

TOOL

作为NSString扩展依赖于：
<CommonCrypto/CommonDigest.h>
<sys/socket.h>
<sys/sockio.h>
<sys/ioctl.h>
<net/if.h>
<arpa/inet.h>

md5-方法1

<pre>

(NSString *)md5String:(NSString *)str {

const char *myPasswd = [str UTF8String ];

unsigned char mdc[ 16 ];

CC_MD5 (myPasswd, ( CC_LONG ) strlen (myPasswd), mdc);

NSMutableString *md5String = [ NSMutableString string ];

for ( int i = 0 ; i< 16 ; i++) {
```
  [md5String appendFormat : @"%02x" ,mdc[i]];
```
}

NSString *md5Str = [md5String uppercaseString];

return md5Str;

}
</pre>

md5-方法2

<pre>

( NSString *)md5StringNB:( NSString *)str {

const char *myPasswd = [str UTF8String ];

unsigned char mdc[ 16 ];

CC_MD5 (myPasswd, ( CC_LONG ) strlen (myPasswd), mdc);

NSMutableString *md5String = [ NSMutableString string ];

[md5String appendFormat : @"%02x" ,mdc[ 0 ]];

for ( int i = 1 ; i< 16 ; i++) {
```
  [md5String appendFormat : @"%02x" ,mdc[i]^mdc[ 0 ]];
```
}

NSString *md5Str = [md5String uppercaseString];

return md5Str;

}
</pre>

获取IP地址

<pre>

(NSString *)getIPAddress {

int sockfd =socket(AF_INET,SOCK_DGRAM, 0);

// if (sockfd <</span> 0) return nil;

NSMutableArray *ips = [NSMutableArray array];

int BUFFERSIZE =4096;

struct ifconf ifc;

char buffer[BUFFERSIZE], *ptr, lastname[IFNAMSIZ], *cptr;

struct ifreq *ifr, ifrcopy;

ifc.ifc_len = BUFFERSIZE;

ifc.ifc_buf = buffer;

if (ioctl(sockfd,SIOCGIFCONF, &ifc) >= 0){

  for (ptr = buffer; ptr < buffer + ifc.ifc_len; ){
      
      ifr = (struct ifreq *)ptr;
      
      int len =sizeof(struct sockaddr);
      
      if (ifr->ifr_addr.sa_len > len) {
          
          len = ifr->ifr_addr.sa_len;
          
      }
      
      ptr += sizeof(ifr->ifr_name) + len;
      
      if (ifr->ifr_addr.sa_family !=AF_INET) continue;
      
      if ((cptr = (char *)strchr(ifr->ifr_name,':')) != NULL) *cptr =0;
      
      if (strncmp(lastname, ifr->ifr_name,IFNAMSIZ) == 0)continue;
      
      memcpy(lastname, ifr->ifr_name,IFNAMSIZ);
      
      ifrcopy = *ifr;
      
      ioctl(sockfd,SIOCGIFFLAGS, &ifrcopy);
      
      if ((ifrcopy.ifr_flags &IFF_UP) == 0)continue;
      
      
      
      NSString *ip = [NSString stringWithFormat:@"%s",inet_ntoa(((struct sockaddr_in *)&ifr->ifr_addr)->sin_addr)];
      
      [ips addObject:ip];
      
  }

}

close(sockfd);

NSString *deviceIP =@"";

for (int i=0; i < ips.count; i++)

{

  if (ips.count >0)
      
  {
      deviceIP = [NSString stringWithFormat:@"%@",ips.lastObject];
  }

}
return deviceIP;

}
</pre>

获取随机数

<pre>

(NSString *)getNonce_str {

NSArray *sourceStr = @[@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",
@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",
@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",
@"U",@"V",@"W",@"X",@"Y",@"Z"];

NSString *resultStr = [[NSMutableString alloc] init];

for (int i = 0; i < 32; i ++) {
```
  int value = arc4random() % 32;
  
  resultStr = [resultStr stringByAppendingString:[NSString stringWithFormat:@"%@",sourceStr[value]]];
```
}

return [NSString stringWithString:resultStr];

}

</pre>

获取时间戳-(10位)

<pre>
time_t now;
time(&now);
timeStamp = (UInt32)[[NSString stringWithFormat:@"%ld", now] integerValue];
</pre>

WXDOC

https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=8_5

WX_PAY

WX_PAY

Params

CS_XML

字符：

请求

解析

import <Foundation/Foundation.h>

import "HDXmlParser.h"

TOOL

md5-方法1

md5-方法2

获取IP地址

获取随机数

获取时间戳-(10位)

WXDOC

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