問題描述

我已經(jīng)嘗試了所有可以在 Internet 上找到的解決方案，以便能夠在 Python 中打印在 Selenium 中打開的頁面.但是，當(dāng)打印彈出窗口出現(xiàn)時，一兩秒后它消失了，沒有保存任何 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.

這是正在嘗試的代碼.基于此處的代碼 - 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 上編碼.

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})

關(guān)于如何將打開的 html 頁面打印為 PDF 的任何提示或解決方案.花了幾個小時試圖完成這項工作.謝謝！

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:

我的問題已被確定為重復(fù)，但是 a) 另一個問題似乎是使用 javascript 代碼，并且 b) 答案不能解決這個問題中提出的問題 - 這可能與更新的軟件有關(guān)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.腳本在 Python 3.7.3 上運行.

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:

把代碼改成

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()

而現(xiàn)在，什么也沒有發(fā)生.Chrome 啟動，加載 url，出現(xiàn)打印對話框，但似乎什么都沒有發(fā)生 - 默認(rèn)打印機隊列中沒有任何內(nèi)容，也沒有 pdf - 我什至通過在 Mac 上查找最近的文件"來搜索 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.

推薦答案

答案 這里，當(dāng)我的操作系統(tǒng)中沒有任何其他打印機設(shè)置時工作.但是當(dāng)我有另一個默認(rèn)打印機時，這不起作用.

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，但是以這種方式進(jìn)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()

這篇關(guān)于如何在 Selenium (Python) 中將打開的頁面保存為 pdf的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！