要滚动页面，您可以编写一个自定义呈现脚本（请参阅http://splash.readthedocs.io/en/stable/scripting-tutorial.html），如下所示：

function main(splash)
    local num_scrolls = 10
    local scroll_delay = 1.0

    local scroll_to = splash:jsfunc("window.scrollTo")
    local get_body_height = splash:jsfunc(
        "function() {return document.body.scrollHeight;}"
    )
    assert(splash:go(splash.args.url))
    splash:wait(splash.args.wait)

    for _ = 1, num_scrolls do
        scroll_to(0, get_body_height())
        splash:wait(scroll_delay)
    end        
    return splash:html()
end

若要呈现此脚本，请使用“execute”终结点而不是render.html终结点：

script = """<Lua script> """
scrapy_splash.SplashRequest(url, self.parse,
                            endpoint='execute', 
                            args={'wait':2, 'lua_source': script}, ...)

感谢Mikhail，我尝试了你的滚动脚本，它的工作，但我也注意到，你的脚本滚动太多的一次，一些js没有时间太渲染和跳过，所以我做了一些小的变化如下：

function main(splash)
        local num_scrolls = 10
        local scroll_delay = 1

        local scroll_to = splash:jsfunc("window.scrollTo")
        local get_body_height = splash:jsfunc(
            "function() {return document.body.scrollHeight;}"
        )
        assert(splash:go(splash.args.url))
        splash:wait(splash.args.wait)

        for _ = 1, num_scrolls do
            local height = get_body_height()
            for i = 1, 10 do
                scroll_to(0, height * i/10)
                splash:wait(scroll_delay/10)
            end
        end        
        return splash:html()
end

我不认为设置硬编码的滚动数量对于无限滚动页面是一个好主意，所以我修改了上面提到的代码如下：

function main(splash, args)
    
    current_scroll = 0  
  
    scroll_to = splash:jsfunc("window.scrollTo")
    get_body_height = splash:jsfunc(
        "function() {return document.body.scrollHeight;}"
    )
    assert(splash:go(splash.args.url))
    splash:wait(3)
  
    height = get_body_height()

    while current_scroll < height do
        scroll_to(0, get_body_height())
        splash:wait(5)
            current_scroll = height
            height = get_body_height()
    end 
    splash:set_viewport_full()
    return splash:html()
end