IOS-发起微信支付方法

WXPay+MD5.h

  

   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     

      // NSObject+MD5.h
     
    
   

    

     

    
    

     

      // NEWDLD
     
    
   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     

      // Created by zz on 16/7/28.
     
    
   

    

     

    
    

     

      // Copyright © 2016年 dld. All rights reserved.
     
    
   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #import <Foundation/Foundation.h>
     
    
   

    

     

    
    

     

      #import "WXApi.h"
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      @interface MD5 : NSObject
     
    
   

    

     

    
    

     

      + (NSString *)getMd5_32Bit_String:(NSString *)srcString;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //创建发起支付时的sign签名
     
    
   

    

     

    
    

     

      +(NSString *)createMD5SingForPayWithAppID:(PayReq *)req;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      @end
     
    
  
 

  
 
 

WXPay+MD5.m

  

   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     

      // NSObject+MD5.m
     
    
   

    

     

    
    

     

      // NEWDLD
     
    
   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     

      // Created by zz on 16/7/28.
     
    
   

    

     

    
    

     

      // Copyright © 2016年 dld. All rights reserved.
     
    
   

    

     

    
    

     

      //
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #import "WXPay+MD5.h"
     
    
   

    

     

    
    

     

      #import <CommonCrypto/CommonDigest.h>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      @implementation MD5
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      + (NSString *)getMd5_32Bit_String:(NSString *)srcString
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
    const char *cStr = [srcString UTF8String];
     
    
   

    

     

    
    

     
    unsigned char digest[CC_MD5_DIGEST_LENGTH];
     
    
   

    

     

    
    

     

          CC_MD5( cStr, strlen(cStr), digest );
     
    
   

    

     

    
    

     
    NSMutableString *result = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];
     
    
   

    

     

    
    

     
    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
     
    
   

    

     

    
    

     

              [result appendFormat:@"%02x", digest[i]];
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     
    return result;
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //创建发起支付时的sign签名
     
    
   

    

     

    
    

     

      +(NSString *)createMD5SingForPayWithAppID:(PayReq *)req
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
    NSString *parter_key = @"dld123******************";
     
    
   

    

     

    
    

     
    NSMutableDictionary *signParams = [NSMutableDictionary dictionary];
     
    
   

    

     

    
    

     

          [signParams setObject:req.openID forKey:@"appid"];//微信appid 
     
    
   

    

     

    
    

     

          [signParams setObject:req.nonceStr forKey:@"noncestr"];//随机字符串
     
    
   

    

     

    
    

     

          [signParams setObject:req.package forKey:@"package"];//扩展字段 参数为 Sign=WXPay
     
    
   

    

     

    
    

     

          [signParams setObject:req.partnerId forKey:@"partnerid"];//商户账号
     
    
   

    

     

    
    

     

          [signParams setObject:req.prepayId forKey:@"prepayid"];//此处为统一下单接口返回的预支付订单号
     
    
   

    

     

    
    

     

          [signParams setObject:[NSString stringWithFormat:@"%ld",req.timeStamp] forKey:@"timestamp"];//时间戳
     
    
   

    

     

    
    

     
    
     
    
   

    

     

    
    

     
    NSMutableString *contentString  =[NSMutableString string];
     
    
   

    

     

    
    

     
    NSArray *keys = [signParams 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 (   ![[signParams objectForKey:categoryId] isEqualToString:@""]
     
    
   

    

     

    
    

     

                  && ![[signParams objectForKey:categoryId] isEqualToString:@"sign"]
     
    
   

    

     

    
    

     

                  && ![[signParams objectForKey:categoryId] isEqualToString:@"key"]
     
    
   

    

     

    
    

     

                  )
     
    
   

    

     

    
    

     

              {
     
    
   

    

     

    
    

     

                  [contentString appendFormat:@"%@=%@&", categoryId, [signParams objectForKey:categoryId]];
     
    
   

    

     

    
    

     

              }
     
    
   

    

     

    
    

     

          }
     
    
   

    

     

    
    

     
    //添加商户密钥key字段 API 密钥
     
    
   

    

     

    
    

     

          [contentString appendFormat:@"key=%@", parter_key];
     
    
   

    

     

    
    

     
    NSString *result = [MD5  getMd5_32Bit_String:contentString];//md5加密
     
    
   

    

     

    
    

     
    return result;
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      @end
     
    
  
 

  
 
 

  

   

    

     

    
    

     

      PayReq *req = [[PayReq alloc]init];
     
    
   

    

     

    
    

     

              req.openID = [[NSString alloc]initWithFormat:@"%@",payUrl[@"appid"]];
     
    
   

    

     

    
    

     

              req.partnerId = payUrl[@"partnerid"];
     
    
   

    

     

    
    

     

              req.prepayId = payUrl[@"prepayid"];
     
    
   

    

     

    
    

     

              req.nonceStr = payUrl[@"noncestr"];
     
    
   

    

     

    
    

     

              req.timeStamp = (UInt32)[payUrl[@"timestamp"]integerValue];
     
    
   

    

     

    
    

     

              req.package = @"Sign=WXPay";
     
    
   

    

     

    
    

     

              req.sign = [MD5 createMD5SingForPayWithAppID:req];//payUrl[@"sign"];
     
    
   

    

     

    
    

     
        
     
    
   

    

     

    
    

     
        BOOL flag = [WXApi sendReq:req];
     
    
  
 

文章来源: zzzili.blog.csdn.net，作者：清雨小竹，版权归原作者所有，如需转载，请联系作者。

原文链接：zzzili.blog.csdn.net/article/details/52209065