C#调用Python脚本打印pdf文件

 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........

推荐安装教程：https://baijiahao.baidu.com/s?id=1606573927720991570&wfr=spider&for=pc

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）