(05-21)表单提交AFN

 AFHTTPRequestOperationManager  *manager =  [AFHTTPRequestOperationManager manager];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript", @"text/plain", @"text/html", @"application/x-www-form-urlencoded",@"text/xml",@"multipart/form-data",nil];
    manager.requestSerializer=[AFHTTPRequestSerializer serializer];
    if (params[@"Filedata"]) {
        [manager POST:urlStr parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
            NSData *data = UIImagePNGRepresentation(params[@"Filedata"]);//UIImageJPEGRepresentation(params[@"Filedata"], 0.1);
            NSString *name = @"image.png";
            NSString *formKey = @"Filedata";
            NSString *type = @"image/png";
            [formData appendPartWithFileData:data name:formKey fileName:name mimeType:type];
        } success:^(AFHTTPRequestOperation *operation, id responseObject) {
            
            NSString *nameStr =  [[NSString alloc]initWithData: responseObject encoding:NSUTF8StringEncoding];
            NSLog(@"responseObject = %@ \n%@",responseObject,nameStr);
            NSArray *resArr = [nameStr componentsSeparatedByString:@"|"];
            if (resArr.count==8 && [resArr[2] isEqualToString:@"0"]) {
                callback(resArr,YES);
            }else{
                 callback(nil,NO);
            }
            
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSLog(@"error = %@",error);
        }];
        return;
    }