如何在 Selenium (Python) 中将打开的页面保存为 pdf

how to save opened page as pdf in Selenium (Python)(如何在 Selenium (Python) 中将打开的页面保存为 pdf)

问题描述

我已经尝试了所有可以在 Internet 上找到的解决方案，以便能够在 Python 中打印在 Selenium 中打开的页面.但是，当打印弹出窗口出现时，一两秒后它消失了，没有保存任何 PDF.

Have tried all the solutions I could find on the Internet to be able to print a page that is open in Selenium in Python. However, while the print pop-up shows up, after a second or two it goes away, with no PDF saved.

这是正在尝试的代码.基于此处的代码 - https://stackoverflow.com/a/43752129/3973491

Here is the code being tried. Based on the code here - https://stackoverflow.com/a/43752129/3973491

使用 Mojave 10.14.5 在 Mac 上编码.

Coding on a Mac with Mojave 10.14.5.

from selenium import webdriver
from selenium.webdriver.support.select import Select
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.chrome.options import Options
from selenium.common.exceptions import WebDriverException
import time
import json

options = Options()
appState = {
    "recentDestinations": [
        {
            "id": "Save as PDF",
            "origin": "local"
        }
    ],
    "selectedDestinationId": "Save as PDF",
    "version": 2
}

profile = {'printing.print_preview_sticky_settings.appState': json.dumps(appState)}
# profile = {'printing.print_preview_sticky_settings.appState':json.dumps(appState),'savefile.default_directory':downloadPath}
options.add_experimental_option('prefs', profile)
options.add_argument('--kiosk-printing')
CHROMEDRIVER_PATH = '/usr/local/bin/chromedriver'

driver = webdriver.Chrome(options=options, executable_path=CHROMEDRIVER_PATH)
driver.implicitly_wait(5)
driver.get(url)
driver.execute_script('window.print();')

$chromedriver --v
ChromeDriver 75.0.3770.90 (a6dcaf7e3ec6f70a194cc25e8149475c6590e025-refs/branch-heads/3770@{#1003})

关于如何将打开的 html 页面打印为 PDF 的任何提示或解决方案.花了几个小时试图完成这项工作.谢谢！

Any hints or solutions as to what can be done to print the open html page to a PDF. Have spent hours trying to make this work. Thank you!

2019-07-11 更新:

Update on 2019-07-11:

我的问题已被确定为重复，但是 a) 另一个问题似乎是使用 javascript 代码，并且 b) 答案不能解决这个问题中提出的问题 - 这可能与更新的软件有关版本.正在使用的 Chrome 版本是版本 75.0.3770.100 (Official Build) (64-bit)，chromedriver 是 ChromeDriver 75.0.3770.90.在 Mac OS Mojave 上.脚本在 Python 3.7.3 上运行.

My question has been identified as a duplicate, but a) the other question seems to be using javascript code, and b) the answer does not solve the problem being raised in this question - it may be to do with more recent software versions. Chrome version being used is Version 75.0.3770.100 (Official Build) (64-bit), and chromedriver is ChromeDriver 75.0.3770.90. On Mac OS Mojave. Script is running on Python 3.7.3.

2019-07-11 更新:

Update on 2019-07-11:

把代码改成

from selenium import webdriver
import json

chrome_options = webdriver.ChromeOptions()
settings = {
    "appState": {
        "recentDestinations": [{
            "id": "Save as PDF",
            "origin": "local",
            "account": "",
        }],
        "selectedDestinationId": "Save as PDF",
        "version": 2
    }
}
prefs = {'printing.print_preview_sticky_settings': json.dumps(settings)}
chrome_options.add_experimental_option('prefs', prefs)
chrome_options.add_argument('--kiosk-printing')
CHROMEDRIVER_PATH = '/usr/local/bin/chromedriver'
driver = webdriver.Chrome(chrome_options=chrome_options, executable_path=CHROMEDRIVER_PATH)
driver.get("https://google.com")
driver.execute_script('window.print();')
driver.quit()

而现在，什么也没有发生.Chrome 启动，加载 url，出现打印对话框，但似乎什么都没有发生 - 默认打印机队列中没有任何内容，也没有 pdf - 我什至通过在 Mac 上查找最近的文件"来搜索 PDF 文件.

And now, nothing happens. Chrome launches, loads url, print dialog appears but then nothing seems to happen - nothing in the default printer queue, and no pdf either - I even searched for the PDF files by looking up "Recent Files" on Mac.

推荐答案

答案 这里，当我的操作系统中没有任何其他打印机设置时工作.但是当我有另一个默认打印机时，这不起作用.

The answer here, worked when I did not have any other printer setup in my OS. But when I had another default printer, this did not work.

我不明白怎么做，但是以这种方式进行小的更改似乎可行.

I don't understand how, but making small change this way seems to work.

from selenium import webdriver
import json

chrome_options = webdriver.ChromeOptions()
settings = {
       "recentDestinations": [{
            "id": "Save as PDF",
            "origin": "local",
            "account": "",
        }],
        "selectedDestinationId": "Save as PDF",
        "version": 2
    }
prefs = {'printing.print_preview_sticky_settings.appState': json.dumps(settings)}
chrome_options.add_experimental_option('prefs', prefs)
chrome_options.add_argument('--kiosk-printing')
CHROMEDRIVER_PATH = '/usr/local/bin/chromedriver'
driver = webdriver.Chrome(chrome_options=chrome_options, executable_path=CHROMEDRIVER_PATH)
driver.get("https://google.com")
driver.execute_script('window.print();')
driver.quit()

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