iOS AFN上传图片

这些都是笔者项目中使用到的代码，上传图片测试成功

• 上传单张图片

// 拍完照，点击使用照片（use photo）按钮时系统会调用该方法
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info
{
    UIImage *image = info[UIImagePickerControllerOriginalImage];
    [self dismissViewControllerAnimated:YES completion:nil];
    
    // 1.上传图片
    NSMutableDictionary *parametersDict = [NSMutableDictionary dictionary];
    parametersDict[@"userId"] = [NSString stringWithFormat:@"%ld", [FKLocalDataManager shareManager].userBasicInfo.id];
    
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    
    formatter.dateFormat = @"yyyyMMddHHmmss";
    
    NSString *fileName = [NSString stringWithFormat:@"%@.png",[formatter stringFromDate:[NSDate date]]];
    
    parametersDict[@"name"] = fileName;
    
    NSString *urlString = [BASIC_URL stringByAppendingUrlComponent:@"/file/singlefileUpload"];
    
    FKProgressHUD *hud = [FKProgressHUD showHUDAddedTo:self.view title:@"上传中..." model:MBProgressHUDModeText];
    
    [self.manager POST:urlString parameters:parametersDict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        
        NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
        
        [formData appendPartWithFileData:imageData name:@"file" fileName:fileName mimeType:@"image/jpeg"];
        
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        dispatch_async(dispatch_get_main_queue(), ^{
            hud.detailsLabel.text = [NSString stringWithFormat:@"上传%.1lf%%", uploadProgress.fractionCompleted * 100];
        });
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        // 1.更新用户基本信息
        [FKLocalDataManager shareManager].userBasicInfo.picUrl = responseObject[@"content"];
        [[FKLocalDataManager shareManager] updateUserBasicInfoWith:[FKLocalDataManager shareManager].userBasicInfo];
        // 2.提示上传成功
        [hud hideAnimated:YES afterDelay:1.0];
        // 3.更新头像
        self.avatarImgV.image = image;
        // 4.将图片存入沙盒中
        [[SDWebImageManager sharedManager] saveImageToCache:image forURL:[NSURL URLWithString:[BASIC_URL stringByAppendingUrlComponent:[FKLocalDataManager shareManager].userBasicInfo.picUrl]]];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        
        [hud hideAnimated:NO];
        
        [NSObject handleExceptionWithError:error];
    }];
    
}

• 多图片上传

#pragma mark - 下一步
- (void)nextStepBtnDidClick:(UIButton *)sender
{
    if (![self.nameTF hasText])
    {
        [FKProgressHUD showHUDAddedTo:self.view title:@"姓名不能为空" model:MBProgressHUDModeText];
        return;
    }
    
    if (![self.IDCardTF hasText])
    {
        [FKProgressHUD showHUDAddedTo:self.view title:@"身份证不能为空" model:MBProgressHUDModeText];
        return;
    }
    
    if (self.uploadIDCardFrontBtn.imageView.image == nil)
    {
        [FKProgressHUD showHUDAddedTo:self.view title:@"身份证正面照片不能为空" model:MBProgressHUDModeText];
        return;
    }
    
    if (self.uploadIDCardReverseBtn.imageView.image == nil)
    {
        [FKProgressHUD showHUDAddedTo:self.view title:@"身份证反面照片不能为空" model:MBProgressHUDModeText];
        return;
    }
    
    if (self.uploadGroupPhotoBtn.imageView.image == nil)
    {
        [FKProgressHUD showHUDAddedTo:self.view title:@"手持身份证照片不能为空" model:MBProgressHUDModeText];
        return;
    }
    
    // 图片取名称
    NSMutableArray <NSString *> *fileNames = [NSMutableArray array];
    NSTimeInterval timeInterval = [NSDate timeIntervalSinceReferenceDate];
    for (int i = 0; i < 3; i++) {
        NSString *fileName = [NSString stringWithFormat:@"%ld.png", (NSInteger)++timeInterval];
        [fileNames addObject:fileName];
    }
    
    // 图片压缩
    NSMutableArray <NSData *> *images = [NSMutableArray array];
    [images addObject:UIImageJPEGRepresentation(self.uploadIDCardFrontBtn.imageView.image, 0.5)];
    [images addObject:UIImageJPEGRepresentation(self.uploadIDCardReverseBtn.imageView.image, 0.5)];
    [images addObject:UIImageJPEGRepresentation(self.uploadGroupPhotoBtn.imageView.image, 0.5)];
    
    
    NSMutableDictionary *parametersDict = [NSMutableDictionary dictionary];
    parametersDict[@"driverId"] = [FKLocalDataManager shareManager].userId;
    parametersDict[@"chineseName"] = self.nameTF.text;
    parametersDict[@"idCard"] = self.IDCardTF.text;
    parametersDict[@"idCardFrontPic"] = fileNames[0];
    parametersDict[@"idCardBackPic"] = fileNames[1];
    parametersDict[@"idCardHandPic"] = fileNames[2];
    
    NSString *urlString = [BASIC_URL stringByAppendingUrlComponent:@"/driver/update"];
    
    FKProgressHUD *hud = [FKProgressHUD showHUDAddedTo:self.view title:@"上传中..." model:MBProgressHUDModeText];
    
    [self.manager POST:urlString parameters:parametersDict constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        
        [formData appendPartWithFileData:images[0] name:@"idCardFrontPic" fileName:fileNames[0] mimeType:@"image/jpeg"];
        [formData appendPartWithFileData:images[1] name:@"idCardBackPic" fileName:fileNames[1] mimeType:@"image/jpeg"];
        [formData appendPartWithFileData:images[2] name:@"idCardHandPic" fileName:fileNames[2] mimeType:@"image/jpeg"];
        
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        dispatch_async(dispatch_get_main_queue(), ^{
            hud.detailsLabel.text = [NSString stringWithFormat:@"上传%.1lf%%", uploadProgress.fractionCompleted * 100];
        });
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        
        if (requestResult)
        {
            FKLog(@"responseObject = %@", responseObject);
            // 1.提示上传成功
            hud.detailsLabel.text = @"数据上传成功";
            [hud hideAnimated:YES afterDelay:1];
            hud.completionBlock = ^{
                // 2.进入下个界面
                FKAddCarTVC *vc = [[FKAddCarTVC alloc] init];
                vc.IDCardNo = self.IDCardTF.text;
                [self.navigationController pushViewController:vc animated:YES];
            };
        }else
        {
            hud.detailsLabel.text = responseObject[@"message"];
            [hud hideAnimated:YES afterDelay:1.0];
        }
        
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        
        [hud hideAnimated:NO];
        
        [NSObject handleExceptionWithError:error];
    }];
}

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