AFN传文件和参数

使用AFNetWorking传文件和参数：

#pragma mark -上传问题图片

- (void)uploadQuestionImage:(UIImage*)questionImage withQuestionID:(NSString*)questionID
{
    AppDelegate * app = [UIApplicationsharedApplication].delegate;
   
    NSData *imageData =UIImageJPEGRepresentation(self.questionImage,1.0);
   
    NSMutableDictionary * parameters = [NSMutableDictionarydictionary];
   
    [parameters setObject:questionIDforKey:@"exID"];
   
    NSMutableURLRequest *request = [[AFHTTPClientclientWithBaseURL:[NSURLURLWithString:dUrl_serverAddress]]multipartFormRequestWithMethod:@"POST"path:@"Path/UploadTitleImage/"parameters:parametersconstructingBodyWithBlock: ^(id<AFMultipartFormData>formData) {
       
        [formData appendPartWithFileData:imageDataname:@"image"fileName:@"quePic.jpg"mimeType:@"image/jpeg"]; //图片
    }];

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperationalloc]initWithRequest:request];
   
    [operation setUploadProgressBlock:^(NSUIntegerbytesWritten, long long totalBytesWritten,longlongtotalBytesExpectedToWrite) {
        float progress = totalBytesWritten / (float)totalBytesExpectedToWrite;
        NSLog(@"Sent Pic %f ..",progress);
       
    }];
   
   
    [operation start];
    [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation*operation, id responseObject) {
       
        NSLog(@" QuestionPictureUploadDidFinish:  %@ ",[operationresponseString]);
        NSString * response =[operationresponseString];
       
        NSError *error = nil;
        NSData *fileIdData = [responsedataUsingEncoding:NSUTF8StringEncoding];
        NSDictionary *dicRoot = [NSJSONSerializationJSONObjectWithData:fileIdDataoptions:NSJSONReadingMutableLeaveserror:&error];
        NSDictionary *dictfil = [dicRootobjectForKey:@"json"];
       
       
        int state = [[dictfilvalueForKey:@"state"]intValue];
        //上传成功
        if (state==1)
        {
            NSString *msg = [NSStringstringWithFormat:@"%@", [dictfil objectForKey:@"msg"]];
            [app showMsg:msg];
        }
        //上传失败
        else
        {
            NSString *msg = [NSStringstringWithFormat:@"%@", [dictfil objectForKey:@"msg"]];
            [app showMsg:msg];
        }
       
    } failure:^(AFHTTPRequestOperation*operation, NSError *error) {
        NSLog(@"上传失败error: %@",  operation.responseString);
        [app showMsg:@"上传失败"];
       
    }];

}