C#调用Python脚本打印pdf文件

2022-08-31 21:36:57

介绍：通过pdf地址先将文件下载到本地，然后调用打印机打印，最后将下载的文件删除。

　　环境：windows系统。（windows64位）

　　　　　windows系统中安装python3.6.2环境

　　资料：

　　　　O2S.Components.PDFRender4NET.dll（vs项目引用，这是在C#中调用打印机）

　　　　python3.6.2 for windows python-3.6.2-amd64-webinstall

　　　　在python环境中添加：pywin32-221.win-amd64-py3.6 和 GSPRINT文件（python环境中执行文件下载打印删除）

windows环境下安装python环境：

点击程序进行安装........

配置打印环境：

　　首先进入cmd环境导入requests模块

　　下载pywin32 官网https://sourceforge.net/projects/pywin32/

找准对应版本.....

或者是我提供的下载地址（我的是3.6.2python版本）

接下来就是安装了.....

然后在python环境中去测试一下

解压

将GSPRINT文件夹与上面win32的安装模块文件放在一起，如下：

后面文件中对应地址：

首先从C#代码开始

　　　界面预览：这个很简单，在wpf中可以写个button按钮事件即可

我直接贴出打印的核心代码：

 /* 由于质保书后台接口给的是pdf下载地址，所以我的思路是 先下载到本地然后打印，打印完成后在删除文件

                     * 由于时间仓促：文件的下载及删除功能使用python来完成（这里也可以改为C#来写）

                     *

                     */

                    try

                    {

                        // 1:文件下载

                        var result = PythonHelper.PdfDownload(this.model.ZhiBaoShu.DownloadUrl);

                        if (!result.Successed)

                        {

                            Dispatcher.Invoke(() =>

                            {

                                MessageBox.Show("pdf质保书下载失败，请联系管理员", "打印消息", MessageBoxButton.OK, MessageBoxImage.Stop);

                                LogHelper.LogInfo($"文件:【{this.model.ZhiBaoShu.DownloadUrl}】下载失败\r\n 错误：\r\n{result.Message}");

                                // 发生错误返回主页

                                UtilHelper.BackToMain(this, mainPage.stpBG, () => { BackToMain(); }, null);

                            });

                        }

                        Thread.Sleep(1000);

                        _savePath = result.Result.ToString();

                        // 2：打印下载pdf文件(python打印只能打印一份，还有打印样式未完善，所以还是用C#来调用打印)

                        result = PythonHelper.PdfPrint(_savePath, model.ZhiBaoShu.PrinterName);

                       // result = ph.PdfPrint(_savePath, model.ZhiBaoShu.PrinterName, (short)model.ZhiBaoShu.PrintNum);

                        if (!result.Successed)

                        {

                            Dispatcher.Invoke(() =>

                            {

                                MessageBox.Show("pdf质保书打印失败，请联系管理员", "打印消息", MessageBoxButton.OK, MessageBoxImage.Stop);

                                LogHelper.LogInfo($"文件:【{result.Result.ToString()}】打印失败\r\n 错误：\r\n{result.Message}");

                                // 发生错误返回主页

                                UtilHelper.BackToMain(this, mainPage.stpBG, () => { BackToMain(); }, null);

                            });

                        }

                        Thread.Sleep(1000);

                        //// 3：删除pdf文件

                        //result = PythonHelper.PdfDelete(_savePath);

                        //if (!result.Successed)

                        //{

                        //    //MessageBox.Show("pdf质保书删除失败", "打印消息", MessageBoxButton.OK, MessageBoxImage.Stop);

                        //    LogHelper.LogInfo($"文件:【{this.model.ZhiBaoShu.DownloadUrl}】删除失败\r\n 错误：\r\n{result.Message}");

                        //    // 发生错误返回主页

                        //    //UtilHelper.BackToMain(this, mainPage.stpBG, () => { BackToMain(); }, null);

                        //    // 文件删除失败不代表打印失败，所以这里结果重置一下

                        //    result.Successed = true;

                        //}

                    }

                    catch (Exception e)

                    {

                    }

pythonhelper.cs 文件（代码未优化）

    /// <summary>

    /// 执行python文件

    /// </summary>

    public static class PythonHelper

    {

        /// <summary>

        /// 程序debug目录文件路径

        /// </summary>

        private static string _binPath = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;

        /// <summary>

        /// 保存本地pdf文件名

        /// </summary>

        private static string _pdfName = DateTime.Now.ToString("HHmmss") + ".pdf";

        /// <summary>

        /// 文件下载保存本地地址+文件名

        /// </summary>

        private static string _savePath = _binPath + "file\\" + _pdfName;

        /// <summary>

        /// pdf下载

        /// </summary>

        /// <param name="downloadurl">pdf下载地址</param>

        /// <returns>返回保存文件地址</returns>

        public static HandlingResult PdfDownload(string downloadurl)

        {

            // python文件地址 ，待处理python文件的路径，本例中放在debug文件夹下

            string _pdfDownloadPy = _binPath + "python\\pdfdownload.py";

            var result = new HandlingResult() { Successed = false };

            try

            {

                // 拼接执行命令（方法传参）

                ArrayList arrayList = new ArrayList();

                arrayList.Add(downloadurl);

                arrayList.Add(_savePath);

                foreach (var param in arrayList)//添加参数

                    _pdfDownloadPy += " " + param;

                // 执行设置

                ProcessStartInfo start = new ProcessStartInfo();

                start.FileName = "python";//执行python.exe

                                          //执行python脚本的命令

                start.Arguments = _pdfDownloadPy;

                //设置运行python脚本的初始目录 这里注意：如果你的python脚本有文件操作，必须设置初始目录,python脚本所在的目录

                start.WorkingDirectory = _binPath + "python\\";

                start.UseShellExecute = false;

                start.CreateNoWindow = true;

                start.RedirectStandardOutput = true;

                start.RedirectStandardError = true;

                using (Process process = Process.Start(start))

                {

                    // 异步获取命令行内容

                    process.BeginOutputReadLine();

                    // 为异步获取订阅事件

                    process.OutputDataReceived += new DataReceivedEventHandler((sender, e) =>

                    {

                        // 打印python脚本中的信息

                        LogHelper.LogInfo(e.Data);

                        //MessageBox.Show(e.Data);//e.Data 就是命令行打印的最后一行信息

                    });

                }

                result.Successed = true;

                result.Result = _savePath;

            }

            catch (Exception e)

            {

                result.Successed = false;

                result.Message = e.Message;

                LogHelper.LogError(e);

            }

            return result;

        }

        /// <summary>

        /// 删除pdf文件

        /// </summary>

        /// <param name="path">本地pdf文件全路径</param>

        public static HandlingResult PdfDelete(string path)

        {

            string _pdfDeletePy = _binPath + "python\\pdfdelete.py";

            var result = new HandlingResult() { Successed = true };

            try

            {

                // 拼接执行命令（方法传参）

                ArrayList arrayList = new ArrayList();

                arrayList.Add(path);

                foreach (var param in arrayList)//添加参数

                    _pdfDeletePy += " " + param;

                // 执行设置

                ProcessStartInfo start = new ProcessStartInfo();

                start.FileName = "python";//执行python.exe

                                          //执行python脚本的命令

                start.Arguments = _pdfDeletePy;

                //设置运行python脚本的初始目录 这里注意：如果你的python脚本有文件操作，必须设置初始目录,python脚本所在的目录

                start.WorkingDirectory = _binPath + "python\\";

                start.UseShellExecute = false;

                start.CreateNoWindow = true;

                start.RedirectStandardOutput = true;

                start.RedirectStandardError = true;

                using (Process process = Process.Start(start))

                {

                    // 异步获取命令行内容

                    process.BeginOutputReadLine();

                    // 为异步获取订阅事件

                    process.OutputDataReceived += new DataReceivedEventHandler((sender, e) =>

                    {

                        // 打印python脚本中的信息

                        LogHelper.LogInfo(e.Data);

                        //MessageBox.Show(e.Data);//e.Data 就是命令行打印的最后一行信息

                    });

                }

            }

            catch (Exception e)

            {

                result.Successed = false;

                result.Message = e.Message;

            }

            return result;

        }

        /// <summary>

        /// 打印pdf

        /// </summary>

        /// <param name="printPath">文件全路径</param>

        /// <param name="printName">打印机名称</param>

        public static HandlingResult PdfPrint(string printPath, string printName)

        {

            string _pdfPrint = _binPath + "python\\pdfprint.py";

            var result = new HandlingResult() { Successed = true };

            try

            {

                // 拼接执行命令（方法传参）

                ArrayList arrayList = new ArrayList();

                arrayList.Add(printPath);

                arrayList.Add(printName);

                foreach (var param in arrayList)//添加参数

                    _pdfPrint += " " + param;

                // 执行设置

                ProcessStartInfo start = new ProcessStartInfo();

                start.FileName = "python";//执行python.exe

                start.Arguments = _pdfPrint;//执行python脚本的命令

                //设置运行python脚本的初始目录 这里注意：如果你的python脚本有文件操作，必须设置初始目录,python脚本所在的目录

                start.WorkingDirectory = _binPath + "python\\";

                start.UseShellExecute = false;

                start.CreateNoWindow = true;

                start.RedirectStandardOutput = true;

                start.RedirectStandardError = true;

                using (Process process = Process.Start(start))

                {

                    // 异步获取命令行内容

                    process.BeginOutputReadLine();

                    // 为异步获取订阅事件

                    process.OutputDataReceived += new DataReceivedEventHandler((sender, e) =>

                    {

                        // 打印python脚本中的信息

                        LogHelper.LogInfo(e.Data);

                        //MessageBox.Show(e.Data);//e.Data 就是命令行打印的最后一行信息

                    });

                }

            }

            catch (Exception e)

            {

                LogHelper.LogError(e);

                result.Successed = false;

                result.Message = e.Message;

            }

            return result;

        }

    }

第二种调用打印机方法：使用第三方O2S.Components.PDFRender4NET.dll文件调用打印机打印pdf

        /// <summary>

        /// 打印pdf文件

        /// </summary>

        /// <param name="pdfPath">文件全路径</param>

        /// <param name="printName">打印机名称</param>

        /// <param name="copies">打印份数</param>

        /// <returns></returns>

        public HandlingResult PdfPrint(string pdfPath, string printName, short copies = 1)

        {

            PDFFile file =null;

            var result = new HandlingResult()

            {

                Successed = true,

            };

            try

            {

                file = PDFFile.Open(pdfPath);

                PrinterSettings settings = new PrinterSettings();

                System.Drawing.Printing.PrintDocument pd = new System.Drawing.Printing.PrintDocument();

                settings.PrinterName = printName; // "NPI84FFAF (HP LaserJet MFP M436)"; // 打印机名称

                settings.PrintToFile = false;

                //设置纸张大小（可以不设置，取默认设置）3.90 in,  8.65 in

                PaperSize ps = new PaperSize("test", 4, 9);

                ps.RawKind = 9; //如果是自定义纸张，就要大于118，（A4值为9，详细纸张类型与值的对照请看http://msdn.microsoft.com/zh-tw/library/system.drawing.printing.papersize.rawkind(v=vs.85).aspx）

                O2S.Components.PDFRender4NET.Printing.PDFPrintSettings pdfPrintSettings =

                    new O2S.Components.PDFRender4NET.Printing.PDFPrintSettings(settings);

                pdfPrintSettings.PaperSize = ps;

                pdfPrintSettings.PageScaling =

                    O2S.Components.PDFRender4NET.Printing.PageScaling.FitToPrinterMarginsProportional;

                pdfPrintSettings.PrinterSettings.Copies = copies;

                file.Print(pdfPrintSettings);

            }

            catch (Exception e)

            {

                LogHelper.LogError(e);

                result.Successed = false;

                result.Message = e.Message;

            }

            finally

            {

                file.Dispose();

                LogHelper.LogInfo($"{pdfPath}---打印成功");

            }

            return result;

        }

以上是C#部分代码，以下python脚本就比较简单了。

注：其实可以只写一个打印方法即可，为了流程看到清楚，所以一个操作一个方法文件。

1:根据地址下载pdf文件 pdfdownload.py

# -*- coding: utf-8 -*-

# 声明字符编码

# coding:utf-8

import os, sys

from requests import get

def dwnloadpfd(file_path, save_path):

    '''

    根据file_path地址下载文件保存到save_path路径中

    :param file_path:下载地址

    :param save_path: 保存地址

    :return:True或False

    '''

    try:

        head = {

            "user-agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.89 Safari/537.36"

        }

        response =get(file_path, headers=head).content

        with open(save_path, 'wb') as f:

            f.write(response)

        print('%s--下载成功'%(save_path))

        return save_path

    except Exception as e:

        print(e)

        return None

if __name__ == "__main__":

    #url = ""

    #dwnloadpfd(url, "musics/1.pdf")

    # 接收参数

    dwnloadpfd(sys.argv[1], sys.argv[2])

2：打印pdf文件：pdfprint.py

# -*- coding: utf-8 -*-

# 声明字符编码

# coding:utf-8

import os, sys

import win32api

import win32print

import json

from handlingresult import handlingresult

GHOSTSCRIPT_PATH = "C:\\Program Files\\gs\\gs9.27\\bin\\gswin64.exe"

GSPRINT_PATH = "C:\\Program Files\\GSPRINT\\gsprint.exe"

def pdfprint(full_file_name, print_name=win32print.GetDefaultPrinter()):

    '''

    根据指定的打印机打印pdf文件

    :param full_file_name:文件全路径

    :param print_name:打印机名称（默认打印机）

    :return:

    '''

    result = handlingresult()

    try:

        # portraint:纵向 landscape：横向

        win32api.ShellExecute(

            0,

            'open',

            GSPRINT_PATH,

            '-ghostscript "' + GHOSTSCRIPT_PATH + '" -landscape -printer "' + print_name + '" "' + full_file_name + '"',

            '.',

            0

        )

        result.Message = '%s---打印成功' % (full_file_name)

        result.Result = None

        result.Successed = True

    except Exception as e:

        result.Message = '%s---打印异常：\n %s' % (full_file_name, str(e))

        result.Result = None

        result.Successed = False

    js = json.dumps(result, default=lambda obj: obj.__dict__, sort_keys=True, indent=4)

    return js

if __name__ == "__main__":

    path ="D:\\1.pdf" #"E:\\开发项目\\学习项目\\Python\\MusicDownLoad\\musics\\1.pdf"

    name = "NPIE091D5 (HP LaserJet MFP M227fdw)"  # win32print.GetDefaultPrinter()  # "NPI84FFAF (HP LaserJet MFP M436)" #

    print(pdfprint(path, name))

    # len(sys.argv)

    # print(sys.argv[1])  # 文件路径

    # print(sys.argv[2:])  # 打印机名称

    # name = ' '.join(sys.argv[2:])

    # print(name)

    # # 打印机名称中有可能有空格

    # print(pdfprint(sys.argv[1], name))

3：打印完成后即可删除文件 pdfdelete.py

# -*- coding: utf-8 -*-

# 声明字符编码

# coding:utf-8

import os, sys

def pdfdelete(full_path):

    '''

    根据文件全路径地址删除

    :param full_path:文件路径

    :return:True或False

    '''

    try:

        if (os.path.exists(full_path)):

            os.remove(full_path)

            print(full_path + '---删除成功')

            return True

        else:

            print(full_path + '---删除文件不存在')

            return False

    except Exception as e:

        print(str(e))

        return False

if __name__ == "__main__":

    pdfdelete(sys.argv[1])

补充：获取打印机状态

# -*- coding: utf-8 -*-

# 声明字符编码

# coding:utf-8

import os, sys

import win32api

import win32print

import json

from handlingresult import handlingresult

GHOSTSCRIPT_PATH = "C:\\Program Files\\gs\\gs9.27\\bin\\gswin64.exe"

GSPRINT_PATH = "C:\\Program Files\\GSPRINT\\gsprint.exe"

# 详细参考：https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-rprn/1625e9d9-29e4-48f4-b83d-3bd0fdaea787

# 对应：win32api 最上面有

PRINTER_STATUE_STR = {

    "2": "打印机处于错误状态",

    "4096": "打印机无法打印",

    "262144": "打印机没有碳粉",

    "128": "打印机处于脱机状态",

    "2097152": "打印机内存不足",

    "524288": "打印机无法打印当前页面",

    "8": "纸张卡在打印机中",

    "16": "打印机缺纸",

    "64": "打印机有一个未指定的纸张问题",

    "1": "打印机暂停",

    "131072": "打印机墨粉不足",

    "1048576": "打印机出现错误"

}

def printer_status_code(printer_name):

    '''

    根据打印机名称获取状态

    :param printer_name:

    :return:

    '''

    result = handlingresult()

    try:

        hPrinter = win32print.OpenPrinter(printer_name)

        dic = win32print.GetPrinter(hPrinter, 2)

        stuta_int = dic.get('Status', 0)# 获取状态值

        result.Result = stuta_int

        stuta = PRINTER_STATUE_STR.get(str(stuta_int), None)

        if stuta == None:

            result.Message = '打印机状态：%s：\n %s' % (printer_name, result.Result)

            result.Successed = True

        else:

            result.Message = '打印机状态：%s：\n %s' % (printer_name, stuta)

            result.Successed = False

    except Exception as e:

        result.Message = '打印机获取状态异常：%s：\n %s' % (printer_name, str(e))

        result.Result = None

        result.Successed = False

    js = json.dumps(result, default=lambda obj: obj.__dict__, sort_keys=True, indent=4)

    return js

if __name__ == "__main__":

    name = ' '.join(sys.argv[1:])

    print(printer_status_code(printer_name=name))

    # code = printer_status_code(

    #     "Brother Color Leg Type1 Class Driver")  # Brother Color Leg Type1 Class Driver  HP LaserJet MFP M436 PCL-6  NPI84FFAF (HP LaserJet MFP M436)

    # print(code)

注：上面python调用打印机进行打印的份数这些设置后续有待完善。（打印份数可以循环调用打印即可）

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