Selenium 代码报错: 上传文件前需先点击按钮

该代码中存在的问题是，上传文件时需要先点击上传文件的按钮，如果没有先点击按钮，直接上传文件会报错。因此需要在上传文件之前先点击上传文件的按钮。修改后的代码如下：

import time
import os
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By

cookie_str = '_gid=GA1.2.521438284.1685852601; login=srtzimu; xfss=qysa23rf7bfqme45; _ga=GA1.1.607076236.1685852601; overlay=true; bcs_cookie_live_stream=1; overlay_count=14; index_ut=html5; _ga_RCR9PNF6FL=GS1.1.1685955589.9.1.1685958086.0.0.0'
upload_folder = "/home/115/up"

# set options for headless Chrome
options = Options()
options.add_argument('--headless')
options.add_argument('--no-sandbox')
options.add_argument('--disable-dev-shm-usage')

# add cookie and login
driver = webdriver.Chrome(options=options)
driver.get("https://imagetwist.com/")
cookies = {}
for cookie in cookie_str.split(';'):
    name, value = cookie.strip().split('=', 1)
    cookies[name] = value
    driver.add_cookie({'name': name, 'value': value})

# upload images
driver.get("https://imagetwist.com/upload")
for filename in os.listdir(upload_folder):
    if filename.endswith(".jpg") or filename.endswith(".png"):
        filepath = os.path.join(upload_folder, filename)
        upload_btn = WebDriverWait(driver, 10).until(
            EC.presence_of_element_located((By.XPATH, "//input[@type='file']"))
        )
        upload_btn.click()
        time.sleep(1)
        upload_field = driver.find_element_by_xpath("//input[@type='file']")
        upload_field.send_keys(filepath)
        time.sleep(5)
        driver.find_element_by_id("upload").click()
        time.sleep(5)

driver.quit()

修改后的代码首先获取上传文件的按钮元素，并点击该按钮，然后再通过send_keys()方法将文件路径传送到输入框，从而完成文件上传。