python chrome调用打印的样例

python selenium 控制chrome 调用打印的时候会找不到元素，控制不到的情况

# 点击打印
wait.until(ec.presence_of_element_located((By.LINK_TEXT, "打印"))).click()
# 父窗口 类名: Chrome_WidgetWin_1 标题: 中行网银(香港) - Google Chrome
father = win32gui.FindWindow(None, '中行网银(香港) - Google Chrome')
# 子窗口 类名: Chrome_RenderWidgetHostHWND 标题: Chrome Legacy Window
son = win32gui.FindWindowEx(father, None, "Chrome_RenderWidgetHostHWND", 'Chrome Legacy Window')
# 设置为最前窗口
win32gui.SetForegroundWindow(son)
time.sleep(1)
# ctrl+P
win32api.keybd_event(17, 0, 0, 0)
win32api.keybd_event(80, 0, 0, 0)
win32api.keybd_event(17, 0, win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(80, 0, win32con.KEYEVENTF_KEYUP, 0)
time.sleep(1)
# ctrl+shift+P
win32api.keybd_event(17, 0, 0, 0)
win32api.keybd_event(16, 0, 0, 0)
win32api.keybd_event(80, 0, 0, 0)
win32api.keybd_event(17, 0, win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(16, 0, win32con.KEYEVENTF_KEYUP, 0)
win32api.keybd_event(80, 0, win32con.KEYEVENTF_KEYUP, 0)
time.sleep(1)
# 发送回车-确认打印
win32api.keybd_event(13, 0, 0, 0)
win32api.keybd_event(13, 0, win32con.KEYEVENTF_KEYUP, 0)
time.sleep(1)
# 关闭子窗口
windows = browser.window_handles
browser.switch_to.window(windows[1])
wait.until(ec.presence_of_element_located((By.NAME, "close"))).click()
# 切回父窗口
browser.switch_to.window(windows[0])
print(browser.page_source)
# 点击返回
wait.until(ec.presence_of_element_located((By.LINK_TEXT, "返回"))).click()
print("print end")

另一种方法，调用pdf打印，代码如下：

import win32api
import os
import json#PRINTER_NAME = '\\\\cnsz02vw00397\\CM_Printer_1'
#PRINTER_NAME = 'Xerox Phaser 3435 PCL 6'def print_pdf(pdf_file_name):with open(os.getcwd() + "\\config_generate.json", "r", encoding="utf-8") as f:json_data = json.load(f)PRINTER_MACHINE = json_data["print_machine"]f.close()
PRINTER_NAME = PRINTER_MACHINE
"""
静默打印pdf
:param pdf_file_name:
:return:
"""
GHOSTSCRIPT_PATH = os.getcwd() + '\\GHOSTSCRIPT\\bin\\gswin32c'
print(GHOSTSCRIPT_PATH)
#currentprinter = config.printerName
currentprinter = PRINTER_NAME
# currentprinter = win32print.GetDefaultPrinter()
arg = '-dPrinted ' \'-dBATCH ' \'-dNOPAUSE ' \'-dNOSAFER ' \'-dFitPage ' \'-dNORANGEPAGESIZE ' \'-q ' \'-dNumCopies=1 ' \'-sDEVICE=mswinpr2 ' \'-sOutputFile="\\\\spool\\' \+ currentprinter +"\""+ " " + \pdf_file_name
#log.info(arg)
win32api.ShellExecute(0, \'open', \GHOSTSCRIPT_PATH, \arg, \".",0
)if __name__ == '__main__':aaa = 'D:\\tempFile\\2019-09-12\\pay\\print.pdf'print_pdf(aaa)

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