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【ObjC】通过http post上传图片
作者:dezai / 发布于2014/2/24/ 1813
通过http post上传图片
//ASIFormDataRequest方式 POST上传图片
-(NSDictionary *)addPicWithDictionary:(NSDictionary *)sugestDic{

  NSDictionary *tempDic=nil;
  
  NSString *url=[NSString stringWithFormat:@"http://182.50.0.62:8095/xianServer/upload/uploadImage?clientType=mobile"];
  
  form = [[[ASIFormDataRequest alloc]
      initWithURL:[NSURL URLWithString:url]] autorelease];
  [form setTimeOutSeconds:60.0];
  form.delegate = self;
  //添加拍照图
  
  
  //分界线的标识符
  NSString *TWITTERFON_FORM_BOUNDARY = @"AaB03x";
  //分界线 --AaB03x
  NSString *MPboundary=[[NSString alloc]initWithFormat:@"--%@",TWITTERFON_FORM_BOUNDARY];
  //结束符 AaB03x--
  NSString *endMPboundary=[[NSString alloc]initWithFormat:@"%@--",MPboundary];
  //添加拍照图片
  imageView.image=[UIImage imageNamed:@"btn_done_down@2x.png"];
  NSData* data = UIImagePNGRepresentation(imageView.image);
  NSLog(@"%@",data);
  //http body的字符串 
  NSMutableString *body=[[NSMutableString alloc]init]; 
  //参数的集合的所有key的集合 
  NSArray *keys= [sugestDic allKeys]; 
  
  //遍历keys 
  for(int i=0;i<[keys count];i++) 
  { 
    //得到当前key 
    NSString *key=[keys objectAtIndex:i]; 
    //如果key不是pic，说明value是字符类型，比如name：Boris 
    if(![key isEqualToString:@"files"])
    { 
      //添加分界线，换行 
      [body appendFormat:@"%@\r\n",MPboundary]; 
      //添加字段名称，换2行 
      [body appendFormat:@"Content-Disposition: form-data; name=\"%@\"\r\n\r\n",key]; 
      //添加字段的值 
      [body appendFormat:@"%@\r\n",[sugestDic objectForKey:key]];       
    } 
  } 
  if (imageView.image) {
    ////添加分界线，换行 
    [body appendFormat:@"%@\r\n",MPboundary];
    //声明pic字段，文件名为boris.png 
    [body appendFormat:@"Content-Disposition: form-data; name=\"files\"; filename=\"boris.png\"\r\n"]; 
    //声明上传文件的格式 
    [body appendFormat:@"Content-Type: image/png\r\n\r\n"];
  }
  
  //声明结束符：--AaB03x--
  NSString *end=[[NSString alloc]initWithFormat:@"\r\n%@",endMPboundary];
  //声明myRequestData，用来放入http body
  NSMutableData *myRequestData=[NSMutableData data];
  //将body字符串转化为UTF8格式的二进制
  [myRequestData appendData:[body dataUsingEncoding:NSUTF8StringEncoding]];
  //将image的data加入
  [myRequestData appendData:data];
  //加入结束符--AaB03x--
  [myRequestData appendData:[end dataUsingEncoding:NSUTF8StringEncoding]];
  //设置HTTPHeader中Content-Type的值
  NSString *content=[[NSString alloc]initWithFormat:@"multipart/form-data; boundary=%@",TWITTERFON_FORM_BOUNDARY];
  
  [form addRequestHeader:@"Content-Type" value:content];
  [form addRequestHeader:@"Content-Length" value:[NSString stringWithFormat:@"%d", [myRequestData length]]];
  [form setRequestMethod:@"POST"];
  [form startAsynchronous];
  [form setDidFailSelector:@selector(requestBeFailed:)];
  [form setDidFinishSelector:@selector(requestBeFinished:)];
  // 解析取得的结果
  return tempDic;
}
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