零门槛AI 绘图：教你为客户定制 ComfyUI Serverless API 应用
作者：鸥弋、筱姜
2023年下半年，ComfyUI 以其快速、流畅的图像生成能力，结合多样的自定义节点，迅速在创作者中流行起来。ComfyUI 的亮点就是能够批量化生成图像，一键加载大量工作流，让用户可以轻松实现人像生成、背景替换、风格迁移和图像动画化等功能。越来越多的企业及个人开发者希望借助 ComfyUI 能力进行 AI 绘画领域创业或者业务上新，获得高流量及商业价值，但使用原生的 ComfyUI 仍然存在一些问题：
1.显卡资源昂贵且难以购买：GPU 卡池管理技术门槛高：高性能的 GPU 资源不仅价格昂贵，而且往往难以大规模采购。此外，GPU 卡池的有效管理和维护需要复杂的技术支持，也带来了额外的挑战。
2.难以应对高并发：原生的 ComfyUI 出图需要排队，并发处理能力有限。在面对高并发场景时，尤其是并发请求具有大的波动性时，资源配置难以精确预测，从而可能导致系统错误和业务中断。
3.门槛高，难以对外透出：ComfyUI 拥有一定的门槛，对于普通的创作者而言几乎无法使用，需要对其进行二次包装才能让更多用户享受到 AI 的便捷。
为了帮助用户高效率、低成本应对企业级复杂场景，以下介绍 ComfyUI API Serverless 版解决方案，通过使用该方案，用户可以充分利用 ComfyUI + Serverless 技术优势快速开发上线 AI 绘画应用，期待为广大开发者 AI 绘画创业及变现提供思路。
相关文章：AI 绘画平台难开发，难变现？试试 Stable Diffusion API Serverless 版解决方案
阿里云X优酷联名发起的「Creat@AI江湖创作大赛」使用本文章中的解决方案，基于函数计算FC 一键部署 AI 绘图平台，1分钟实现 “破次元壁合照”、5分钟实现 Stable Diffusion、ComfyUI 部署，生成以“少年江湖“为主题的画作赢万元奖金。
活动链接：https://developer.aliyun.com/plan/create/snbm
方案优势
在以往的活动中，我们也面临了很多非技术相关的用户期望享受 AI 的魅力。结合实际需要我们给出了 Serverless 化的 ComfyUI 实践案例，解决了上述问题。
- 部署简单：提供基础 ComfyUI 镜像，不需要修改时一键即可拉起出图，需要修改时也只需要修改 ComfyUI 镜像地址即可
- 弹性 GPU：函数计算提供了 GPU 弹性的能力，根据实际请求控制实例个数，有突发流量时自动弹新实例承接请求，完全不需要增加额外的关注
- 按量付费：函数计算的按量实例为毫秒级粒度的计费策略，用多久就收多少钱，确保每分钱都花在刀刃上
- ComfyUI Serverless 化改造：对原本不适应 Serverless 弹性能力的 ComfyUI 改造，使其可以支持异步、并发、弹性等各种 Serverless 能力
- 前后端联动：活动开源了一个支持自定义参数，并且并发出图的前端页面，可直接提供给客户使用
应用场景
ComfyUI 提供了非常高的自由度和灵活性，支持定制化工作流，并且可以重复使用，批量出图，特别适用于需要创意图像生成场景：
- 艺术创作与设计：艺术家和设计师可以利用 ComfyUI 生成独特的艺术作品，包括概念艺术、插画、海报设计等。通过 ComfyUI，他们可以根据自己的创意想法生成初步的图像草稿，然后再进一步细化和完善。
- 内容制作与营销：在社交媒体、广告和营销领域，ComfyUI 可用于快速生成符合品牌风格的视觉素材，用于社交媒体内容、广告横幅、海报等
- 游戏开发：游戏开发者可能利用 ComfyUI 自动生成游戏内的景观或建筑物的纹理，减少手工制作这些元素所需的时间和成本。
- 视觉特效与影视后期：电影和电视行业的视觉特效团队可以使用 ComfyUI 来辅助创建逼真的背景、特殊效果或修复旧影片中的画面缺陷。
通过 API 接口调用 ComfyUI 解决方案
常规的 ComfyUI 出图的流程大致如下
- 调用
/prompt接口，发起出图任务 - 通过 WebSocket 获取出图进度
由于在 Serverless 场景下，无请求的时候实例会被冻结，因此 WebSocket 请求是必须要存在的，且需要保持连接到出图完成。
在并发请求数比较大的情况下，我们往往期望可以利用 Serverless 的弹性，动态创建多个函数实例处理出图任务。但由于 ComfyUI 本身是“有状态”的，难以确保出图的请求和获取状态的请求固定打到同一个实例上，这可能会导致接口的调用不符合预期。
为了让 ComfyUI 更加适配 Serverless 模式，需要针对 ComfyUI 进行一定的改造。
参考 fc-comfyui/src/images/agent 的代码，在 ComfyUI 镜像里内置 agent 程序，负责转换 ComfyUI 请求并且拉起 ComfyUI。
注意！
我们提供的代码仅用于运营活动使用，作为 Serverless 方式调用的实践参考。
功能未经过严格测试，请根据实际的业务需要开发或调整相关的代码，并构建 ComfyUI 镜像。
目前提供的 Agent 能力介绍
开启 Agent 能力，需要增加环境变量
USE_AGENT：1
当通过 Agent 的 API 调用时，建议您调整单实例并发度为 1 ～ 5，确保并发请求尽量使用单独的实例，提高出图效率
数据类型
出图 Prompt
与 ComfyUI 在 Dev Mode 导出的文件一致
type TPromptNode struct {
Inputs map[string]any `json:"inputs"`
ClassType string `json:"class_type"`
Meta map[string]any `json:"_meta"`
}
type TPrompt map[string]TPromptNode
LoadImage 节点的参数做了特殊处理，如果内容为 base64 或 http 地址，会自动将对应的文件上传，并转换为 ComfyUI 可识别的形式
进度
// key 为 node id 的 map 对象
type TProgress map[string]TProgressNode
type TProgressNode struct {
Max int `json:"max"` // 进度的最大值
Value int `json:"value"` // 当前进度
Start int64 `json:"start"` // 开始时间
LastUpdated int64 `json:"last_updated"` // 最后一次更新时间
Images []TProgressNodeImage `json:"images"` // 当前节点输出的图片信息（路径）
Results []string `json:"results,omitempty"` // 当前节点输出的图片 base64
}
接口
出图请求（HTTP 同步）
路径：/api/run
Body：json 格式的 prompt 数据
返回值：最后一次的进度（包含图片信息）
当需要异步请求时，需要增加 X-Fc-Invocation-Type 和 task-id，前者告知 FC 异步形式调用，后者用于记录当前任务的唯一 id，方便后续获取状态
curl http://xxxxx/api/run -v \
-H 'X-Fc-Invocation-Type: Async' \
-H "task-id: abcdefg" \
-XPOST \
-d '{
"3": {
"inputs": {
"seed": 1586995582004891,
"steps": 17,
"cfg": 6,
"sampler_name": "dpm_2",
"scheduler": "karras",
"denoise": 1,
"model": [
"33",
0
],
"positive": [
"31",
0
],
"negative": [
"32",
0
],
"latent_image": [
"5",
0
]
},
"class_type": "KSampler",
"_meta": {
"title": "KSampler"
}
},
"4": {
"inputs": {
"ckpt_name": "majicMIX realistic_v7.safetensors"
},
"class_type": "CheckpointLoaderSimple",
"_meta": {
"title": "Load Checkpoint"
}
},
"5": {
"inputs": {
"width": 1024,
"height": 784,
"batch_size": 1
},
"class_type": "EmptyLatentImage",
"_meta": {
"title": "Empty Latent Image"
}
},
"6": {
"inputs": {
"text": "2 human\nhi quality,detailed",
"clip": [
"4",
1
]
},
"class_type": "CLIPTextEncode",
"_meta": {
"title": "CLIP Text Encode (Prompt)"
}
},
"8": {
"inputs": {
"samples": [
"3",
0
],
"vae": [
"4",
2
]
},
"class_type": "VAEDecode",
"_meta": {
"title": "VAE Decode"
}
},
"9": {
"inputs": {
"filename_prefix": "ComfyUI",
"images": [
"8",
0
]
},
"class_type": "SaveImage",
"_meta": {
"title": "Save Image"
}
},
"10": {
"inputs": {
"image": "https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/default.png",
"upload": "image"
},
"class_type": "LoadImage",
"_meta": {
"title": "Load Image"
}
},
"11": {
"inputs": {
"image": "https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/百里东君.png",
"upload": "image"
},
"class_type": "LoadImage",
"_meta": {
"title": "Load Image",
"edit": []
}
},
"12": {
"inputs": {
"image": "https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/background.png",
"upload": "image"
},
"class_type": "LoadImage",
"_meta": {
"title": "Load Image"
}
},
"13": {
"inputs": {
"image": "https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/mask.png",
"upload": "image"
},
"class_type": "LoadImage",
"_meta": {
"title": "Load Image"
}
},
"15": {
"inputs": {
"threshold_r": 0.15,
"threshold_g": 0.15,
"threshold_b": 0.15,
"remove_isolated_pixels": 0,
"fill_holes": false,
"image": [
"13",
0
]
},
"class_type": "MaskFromRGBCMYBW+",
"_meta": {
"title": "🔧 Mask From RGB/CMY/BW"
}
},
"21": {
"inputs": {
"image_weight": 0.8,
"prompt_weight": 1,
"weight_type": "linear",
"start_at": 0,
"end_at": 1,
"image": [
"10",
0
],
"mask": [
"15",
0
],
"positive": [
"24",
0
],
"negative": [
"25",
0
]
},
"class_type": "IPAdapterRegionalConditioning",
"_meta": {
"title": "IPAdapter Regional Conditioning"
}
},
"22": {
"inputs": {
"image_weight": 1,
"prompt_weight": 1,
"weight_type": "linear",
"start_at": 0,
"end_at": 1,
"image": [
"11",
0
],
"mask": [
"15",
1
],
"positive": [
"26",
0
],
"negative": [
"25",
0
]
},
"class_type": "IPAdapterRegionalConditioning",
"_meta": {
"title": "IPAdapter Regional Conditioning"
}
},
"23": {
"inputs": {
"image_weight": 0.7000000000000001,
"prompt_weight": 1,
"weight_type": "linear",
"start_at": 0,
"end_at": 1,
"image": [
"12",
0
],
"mask": [
"15",
6
]
},
"class_type": "IPAdapterRegionalConditioning",
"_meta": {
"title": "IPAdapter Regional Conditioning"
}
},
"24": {
"inputs": {
"text": "illustration of a body with black hair, presented in high definition with intricate details",
"clip": [
"4",
1
]
},
"class_type": "CLIPTextEncode",
"_meta": {
"title": "CLIP Text Encode (Prompt)"
}
},
"25": {
"inputs": {
"text": "(worst quality:1.6),(low quality:1.6),(lowres:1.6),(NSFW:1.5),watermark,monochrome,disconnected limbs,malformed limbs,extra limb,mutated hands,fused fingers,too many fingers,extra arms,missing fingers,bad hands,bad feet,mutated hands and fingers,malformed hands,extra legs,floating limbs,missing limb,mutation,mutated,deformed,bad body,poorly drawn hands,(badhandv4),(naked),(nude),",
"clip": [
"4",
1
]
},
"class_type": "CLIPTextEncode",
"_meta": {
"title": "CLIP Text Encode (Prompt)"
}
},
"26": {
"inputs": {
"text": "anime Aillustration of 1 boy with black hair, depicted in high definition showcasing rich details, in 8k resolution.",
"clip": [
"4",
1
]
},
"class_type": "CLIPTextEncode",
"_meta": {
"title": "CLIP Text Encode (Prompt)"
}
},
"28": {
"inputs": {
"params_1": [
"21",
0
],
"params_2": [
"22",
0
],
"params_3": [
"23",
0
]
},
"class_type": "IPAdapterCombineParams",
"_meta": {
"title": "IPAdapter Combine Params"
}
},
"31": {
"inputs": {
"conditioning_1": [
"21",
1
],
"conditioning_2": [
"22",
1
],
"conditioning_3": [
"6",
0
],
"conditioning_4": [
"47",
0
]
},
"class_type": "ConditioningCombineMultiple+",
"_meta": {
"title": "🔧 Conditionings Combine Multiple "
}
},
"32": {
"inputs": {
"conditioning_1": [
"47",
1
],
"conditioning_2": [
"22",
2
],
"conditioning_3": [
"25",
0
]
},
"class_type": "ConditioningCombineMultiple+",
"_meta": {
"title": "🔧 Conditionings Combine Multiple "
}
},
"33": {
"inputs": {
"combine_embeds": "concat",
"embeds_scaling": "V only",
"model": [
"4",
0
],
"ipadapter": [
"34",
1
],
"ipadapter_params": [
"28",
0
]
},
"class_type": "IPAdapterFromParams",
"_meta": {
"title": "IPAdapter from Params"
}
},
"34": {
"inputs": {
"preset": "PLUS (high strength)",
"model": [
"4",
0
]
},
"class_type": "IPAdapterUnifiedLoader",
"_meta": {
"title": "IPAdapter Unified Loader"
}
},
"43": {
"inputs": {
"clip_name": "CLIP-ViT-H-14-laion2B-s32B-b79K.safetensors"
},
"class_type": "CLIPVisionLoader",
"_meta": {
"title": "Load CLIP Vision"
}
},
"45": {
"inputs": {
"ipadapter_file": "ip-adapter-plus_sd15.safetensors"
},
"class_type": "IPAdapterModelLoader",
"_meta": {
"title": "IPAdapter Model Loader"
}
},
"46": {
"inputs": {
"provider": "CPU"
},
"class_type": "IPAdapterInsightFaceLoader",
"_meta": {
"title": "IPAdapter InsightFace Loader"
}
},
"47": {
"inputs": {
"strength": 0.8,
"start_percent": 0,
"end_percent": 1,
"positive": [
"21",
1
],
"negative": [
"21",
2
],
"control_net": [
"48",
0
],
"image": [
"49",
0
]
},
"class_type": "ControlNetApplyAdvanced",
"_meta": {
"title": "Apply ControlNet (Advanced)"
}
},
"48": {
"inputs": {
"control_net_name": "control_v11p_sd15_openpose_fp16.safetensors"
},
"class_type": "ControlNetLoader",
"_meta": {
"title": "Load ControlNet Model"
}
},
"49": {
"inputs": {
"detect_hand": "enable",
"detect_body": "enable",
"detect_face": "enable",
"resolution": 512,
"image": [
"10",
0
]
},
"class_type": "OpenposePreprocessor",
"_meta": {
"title": "OpenPose Pose"
}
}
}'
{"":{"max":0,"value":0,"start":0,"last_updated":1722234889,"images":null},"10":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"11":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"12":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"13":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"15":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"21":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"22":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"23":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"24":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"25":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"26":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"28":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"3":{"max":17,"value":17,"start":1722234848,"last_updated":1722234889,"images":null},"31":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"32":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"33":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"34":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"4":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"43":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"45":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"46":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"47":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"48":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"49":{"max":1,"value":1,"start":1722234846,"last_updated":1722234848,"images":null},"5":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"6":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"8":{"max":1,"value":0,"start":1722234889,"last_updated":1722234889,"images":null},"9":{"max":1,"value":0,"start":1722234889,"last_updated":1722234889,"images":[{"filename":"ComfyUI_00004_.png","subfolder":"","type":"output"}]}}
出图请求（WebSocket）
路径：/api/run/ws
Message：
- 客户端 -> 服务端：仅发送一次，json 格式的 prompt 信息
- 服务端 -> 客户端：中间状态
获取状态
路径：/api/run/ws?id=
Query 参数：
id：task id
curl http://xxxxx/api/status?id=abcdefg -v
{"":{"max":0,"value":0,"start":0,"last_updated":1722234889,"images":null},"10":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"11":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"12":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"13":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"15":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"21":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"22":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"23":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"24":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"25":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"26":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"28":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"3":{"max":17,"value":17,"start":1722234848,"last_updated":1722234889,"images":null},"31":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"32":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"33":{"max":1,"value":0,"start":1722234844,"last_updated":1722234844,"images":null},"34":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"4":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"43":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"45":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"46":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"47":{"max":1,"value":0,"start":1722234848,"last_updated":1722234848,"images":null},"48":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"49":{"max":1,"value":1,"start":1722234846,"last_updated":1722234848,"images":null},"5":{"max":0,"value":0,"start":0,"last_updated":0,"images":null},"6":{"max":0,"value":0,"start":0,"last_updated":0,"imag* Connection #0 to host photo-b-comfyui-ibiwqxodsh.cn-hangzhou.fcapp.run left intact
es":null},"8":{"max":1,"value":0,"start":1722234889,"last_updated":1722234889,"images":null},"9":{"max":1,"value":0,"start":1722234889,"last_updated":1722234889,"images":[{"filename":"ComfyUI_00004_.png","subfolder":"","type":"output"}]}}
其他
原样转发至 ComfyUI
调用方式
同步调用
/api/run 和 /api/run/ws 都是同步接口，直接调用即可，区别在于是否需要出图进度
- 在 WebSocket 内部获取：只调用
/api/run/ws - 不关心出图进度 / 起另一个线程获取进度：使用
/api/run+/api/status
注：当选择
/api/run+/api/status方式时，您需要挂载一个 NAS 实例或改造代码，将状态存放至 OTS 等数据库，否则在多实例时无法获取进度
异步调用
调用 /api/run 接口，并且添加 HTTP Header，借助函数计算自带的能力，将请求转换为异步形式
- Key：
X-Fc-Invocation-Type - Value：
Async
注：当选择异步调用时，您需要挂载一个 NAS 实例或改造代码，将状态存放至 OTS 等数据库，否则在多实例时无法获取进度
二次开发
我们提供的 agent 仅用作参考，正式使用时，请根据业务需要进行二次开发
状态存储
在 src/images/agent/pkg/store/fs.go 中，我们实现了基于文件系统的状态存储，您只需要挂载 NAS 系统，确保文件可被正常持久化，既可以在多个实例之间共享状态文件，确保可以正确拿到状态信息
更好的做法是，将状态信息写入到 OTS、MySQL 等数据库中，您只需要仿照 fs.go 实现 Stroe 接口针对其他数据库的实现即可
// Store KV 数据存储
type Store interface {
// Save 存储 value 到 key
Save(key string, value string) error
// Load 从 key 加载 value
Load(key string) (string, error)
}
Output 节点
目前，agent 仅针对 SaveImage 节点做了特殊处理，提取其中的图片信息。对于特殊的业务需要，您可能需要更加定制化的工作流处理，如
- 增加更多对于 Output 的解析
- 不解析图片节点，而是借助于其他接口获取图片文件
case "execution_error", "executed":
// 节点执行结束
log.Debugf("%s node %s finished", logPrefix, nodeid)
// 节点已完成时，修改下 Max 和 Value 至少为 1
if currentNodeProgress.Max == 0 && currentNodeProgress.Value == 0 {
currentNodeProgress.Max = 1
currentNodeProgress.Value = 1
}
if promptNode.ClassType == "SaveImage" && msg.Data.Output.Images != nil && len(msg.Data.Output.Images) > 0 {
// 如果是图片节点，则记录一下图片数据
if currentNodeProgress.Images == nil {
currentNodeProgress.Images = make([]store.TProgressNodeImage, 0, len(msg.Data.Output.Images))
}
for _, img := range msg.Data.Output.Images {
currentNodeProgress.Images = append(currentNodeProgress.Images, store.TProgressNodeImage{
Filename: img.Filename,
SubFolder: img.SubFolder,
Type: img.Type,
})
}
}
前端功能集成
与 Agent 对应，我们也给出了一份前端页面
devsapp/fc-comfyui-couple-photo
在这里，我们针对 ComfyUI 的 prompt 做了一些特殊的约定，以适应自定义需要。
以函数计算支持活动 “阿里云X优酷江湖创作大赛” 为例，我们提供了预定义的 prompt 文件
[
{
"title": "破次元壁合照",
"prompt": {},
"params": [
{
"type": "group",
"title": "STEP 1 - 上传您的照片",
"children": [
{
"type": "image",
"id": "10",
"key": "image",
"title": "参考图",
"description": "请上传您的照片，帮助模型理解您的样貌。请尽量选择背景简单、主体突出的半身照，不要佩戴墨镜、帽子等可能影响您特征的衣物。"
},
{
"type": "string",
"id": "24",
"key": "text",
"title": "参考形象描述",
"description": "为了确保模型更好地理解您的特点，您可以使用提示词来加强模型对您的印象（请使用因为描述）。"
}
]
},
{
"type": "image",
"id": "11",
"key": "image",
"title": "STEP 2 - 选择角色",
"description": "请选择您希望合照的角色。",
"options": [
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/百里东君.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/司空长风.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/玥瑶.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/叶鼎之.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/易文君.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/南宫春水.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/萧若风.png"
]
},
{
"type": "image",
"id": "12",
"key": "image",
"title": "STEP 3 - 上传背景图",
"description": "请上传您期望的合影地点的图片，这将作为背景图片的参考。"
}
]
},
{
"title": "背景替换",
"prompt": {},
"params": [
{
"type": "image",
"id": "10",
"key": "image",
"title": "STEP 1 - 选择角色",
"description": "请选择您希望合照的角色。",
"options": [
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/百里东君.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/司空长风.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/玥瑶.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/叶鼎之.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/易文君.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/南宫春水.png",
"https://serverless-tool-images.oss-cn-hangzhou.aliyuncs.com/aigc/json/couple/萧若风.png"
]
},
{
"type": "image",
"id": "12",
"key": "image",
"title": "STEP 2 - 上传背景图",
"description": "请上传您期望的合影地点的图片，这将作为背景图片的参考。"
}
]
}
]
通过 params 字段，约定了如何渲染页面并允许用户填入自己的参数
export type ComfyUIPromptEditPanel = {
type: 'image' | 'select' | 'number' | 'string' | 'group'; // 数据类型
id?: string; // 对应 prompt 中的 node id
key: string; // 要修改的参数
title: string; // 标题
description?: string; // 描述
options?: string[] | string; // 可选项
min?: number; // 最小值
max?: number; // 最大值
step?: number; // 调整步数
hidden?: boolean; // 是否隐藏
children?: ComfyUIPromptEditPanel[]; // group 类型的子节点
};
一些其他约定：
- 如果
seed字段为-1，则会被替换为随机数
如果您也希望创建自己的 ComfyUI 自定义页面提供给自己的客户，可以参考相关的前端代码。
最佳实践
为了方便大家直观体验一下该解决方案成效，函数计算Serverless 应用中心上线基于 ComfyUI Serverless API 解决方案搭建的 应用-【少年白马专属】破次元壁合照 AI 绘画平台，作为一个实验demo 开放体验，期待为广大开发者 AI 绘画创业及变现提供一些有益思考。直接参加体验活动，送好礼！
活动链接：https://developer.aliyun.com/plan/create/snbm
更多内容关注 Serverless 微信公众号（ID：serverlessdevs），汇集 Serverless 技术最全内容，定期举办 Serverless 活动、直播，用户最佳实践。
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