【python】云打印实现

import time
import win32api
import win32print
from watchdog.observers import Observer
from watchdog.events import *
import json
import sys
import traceback
import os
def printer_loading(filename, printer):
    win32api.ShellExecute(
        0,
        "print",
        filename,
        '/d:"%s"' % win32print.GetDefaultPrinter(),
        ".",
        0
    )
'''
def printer_pic(pic_path, printer_name):
    # 物理宽度、高度
    PHYSICALWIDTH = 110
    PHYSICALHEIGHT = 111
    # 物理偏移位置
    PHYSICALOFFSETX = 112
    PHYSICALOFFSETY = 113
    printer_name = win32print.GetDefaultPrinter()
    hDC = win32ui.CreateDC()
    hDC.CreatePrinterDC(printer_name)
    printer_size = hDC.GetDeviceCaps(PHYSICALWIDTH), hDC.GetDeviceCaps(PHYSICALHEIGHT)
    # printer_margins = hDC.GetDeviceCaps (PHYSICALOFFSETX), hDC.GetDeviceCaps (PHYSICALOFFSETY)
    # 打开图片
    # ＃通过每个像素使它尽可能大
    # ＃页面不失真。
    bmp = Image.open(file_name)
    ratios = [1.0 * 1754 / bmp.size[0], 1.0 * 1240 / bmp.size[1]]
    scale = min(ratios)
    # ＃开始打印作业，并将位图绘制到
    # ＃按比例缩放打印机设备。
    hDC.StartDoc(file_name)
    hDC.StartPage()
    dib = ImageWin.Dib(bmp)
    scaled_width, scaled_height = [int(scale * i) for i in bmp.size]
    print(scaled_width, scaled_height)
    x1 = int((printer_size[0] - scaled_width) / 2)
    y1 = int((printer_size[1] - scaled_height) / 2)
    # 横向位置坐标
    x1 = 1580
    # 竖向位置坐标
    y1 = 30
    # 4倍为自适应图片实际尺寸打印
    x2 = x1 + bmp.size[0] * 4
    y2 = y1 + bmp.size[1] * 4
    dib.draw(hDC.GetHandleOutput(), (x1, y1, x2, y2))
    hDC.EndPage()
    hDC.EndDoc()
    hDC.DeleteDC()
'''
class FileEventHandler(FileSystemEventHandler):
    def __init__(self,printer):
        FileSystemEventHandler.__init__(self)
        self.printer = printer
    def on_created(self, event):
        print(event.is_directory)
        if event.is_directory:
            print("directory created:{0}".format(event.src_path))
        else:
            print("file created:{0}".format(event.src_path))
            if event.src_path.endswith("docx") or event.src_path.endswith("doc") or event.src_path.endswith("xlsx") or event.src_path.endswith("jpg") or event.src_path.endswith("pdf") or event.src_path.endswith("xls") or event.src_path.endswith("txt") or event.src_path.endswith("img"):
                if "~" not in event.src_path:
                    print(f"打印路径{event.src_path}")
                    print(f"打印机名字{self.printer}")
                    printer_loading(event.src_path, self.printer)
# import time
# win32api.ShellExecute(0, 'open', 'C:\\Program Files (x86)\\Allway Sync\\Bin\\syncappw.exe', '','',1)
if __name__ == "__main__":
    try:
        observers = []
        print("当前检测到的打印机:")
        maxL = 2
        Num = 2
        for i in range(1, 10):
            # print(i)
            r = win32print.EnumPrinters(i)
            l = len(r)
            if l > maxL:
                maxL = l
                Num = i
        for i, p in enumerate(list(win32print.EnumPrinters(Num))):
            print(f"\t{i}:{p[1]}\n")
        # f = open('.ttings.txt', 'r', encoding="utf-8")
        settings = {}
        # print("当前配置:")
        # for line in f.readlines():
        #     k, v = line.split(",")
        #     settings[k.strip()] = v.strip()
        #     print(f"\t{k}:{v}")
        print("当前配置:")
        with open("./settings.json", 'rb') as load_f:
            ds = json.load(load_f)
            for d in ds:
                settings[d['url'].strip()] = d["printer"].strip()
                print(f"\t{d}")
        pass
        for path, printer in settings.items():
            observer = Observer()
            print("打印机名"+printer)
            event_handler = FileEventHandler(printer)
            observer.schedule(event_handler, path, True)
            observer.start()
            observers.append(observer)
        try:
            while True:
                time.sleep(1)
        except KeyboardInterrupt:
            for observer in observers:
                observer.stop()
        for observer in observers:
            observer.join()
    except Exception as e:
        print(e)
        traceback.print_exc()
        input()

w = DispatchEx('kwps.Application')
 w.Visible = 0  # 不打开软件
 w.DisplayAlerts = 0  # 不报错
doc = w.Documents.Open(f)

# 打印输出
                    def printer_loading(filename, printer):
                        win32api.ShellExecute(
                            0,
                            "print",
                            filename,
                            '/d:"%s"' % win32print.GetDefaultPrinter(),
                            ".",
                            0
                        )
                    # 打印