如何将image::ImageBuffer转换为actix_web::HttpResponse

use actix_web::{HttpResponse, web};
use image::{DynamicImage, ImageBuffer, Rgba};

fn image_to_response(image: ImageBuffer<Rgba<u8>, Vec<u8>>) -> HttpResponse {
    let dynamic_image: DynamicImage = ImageBuffer::into(image);
    let mut buffer = Vec::new();
    dynamic_image.write_to(&mut buffer, image::ImageOutputFormat::PNG).unwrap();
    
    HttpResponse::Ok()
        .content_type("image/png")
        .body(buffer)
}

fn main() {
    // 在路由处理程序中调用image_to_response函数
    // 例如：
    // web::get().to(|| {
    //     let image_buffer: ImageBuffer<Rgba<u8>, Vec<u8>> = // 从某个地方获取ImageBuffer
    //     image_to_response(image_buffer)
    // })
}