Splash Lua腳本上可能會出現錯誤

Question

我需要在Splash上​​運行以下簡單的Lua腳本：

    script = """
    function main(splash)
        local url = splash.args.url
        assert(splash:go(url))
        assert(splash:wait(1))

        -- go back 1 month in time and wait a little (1 second)
        assert(splash:runjs("$('a[data-ci-test-id=\"checkOutButton\"]').click()"))
        assert(splash:wait(1))

        -- return result as a JSON object
        return {
            html = splash:html(),
            -- we don't need screenshot or network activity
            --png = splash:png(),
            --har = splash:har(),
        }
    end
    """

但是我得到了這個錯誤：

{u'info': {u'source': u'[string "..."]', u'message': u'[string "..."]:8: \')\' expected near \'checkOutButton\'', u'line_number': 8, u'type': u'LUA_INIT_ERROR', u'error': u"')' expected near 'checkOutButton'"}, u'type': u'ScriptError', u'description': u'Error happened while executing Lua script', u'error': 400}

如何編寫CSS選擇器字符串以使此腳本起作用？

Answer 1

我發現了基於另一個答案的答案，即使錯誤字符串不一樣。 使用scrapy + splash返回html

事實證明，我抓取的頁面沒有JQuery，因此我必須首先加載JQuery包。

    script = """
    function main(splash)
        # add this vvv
        assert(splash:autoload("https://code.jquery.com/jquery-3.1.1.min.js"))
        local url = splash.args.url
        assert(splash:go(url))
        assert(splash:wait(1))

        -- go back 1 month in time and wait a little (1 second)
        assert(splash:runjs("$('div.minicart_summery > a.btn_checkout').click()"))
        assert(splash:wait(1))

        -- return result as a JSON object
        return {
            html = splash:html(),
            -- we don't need screenshot or network activity
            --png = splash:png(),
            --har = splash:har(),
        }
    end
    """