C#pdf 切割成图片

引用

using Ghostscript.NET;
using Ghostscript.NET.Rasterizer;

需要安装 exe文件

public static GhostscriptVersionInfo _lastInstalledVersion = null;
        public static GhostscriptRasterizer _rasterizer = null;

PdfToImages(string pdfInputPath, string imageOutputPath）

{

//解析度
                int desired_x_dpi = Convert.ToInt32(96);
                int desired_y_dpi = Convert.ToInt32(96);

Log.writeLog("生成临时文件夹");
                var destFile = GetFilePath(pdfInputPath);
                Log.writeLog("复制pdf资料");
                System.IO.File.Copy(pdfInputPath, destFile, true);
                Log.writeLog("复制pdf资料完成");
                if (System.IO.File.Exists(destFile))
                {
                    try
                    {

_lastInstalledVersion =                             GhostscriptVersionInfo.GetLastInstalledVersion(                        GhostscriptLicense.GPL | GhostscriptLicense.AFPL,                        GhostscriptLicense.GPL);

_rasterizer = new GhostscriptRasterizer();

_rasterizer.Open(destFile, _lastInstalledVersion, false);

　　　　　　for (var i = 1; i <= endPageNum; i++)

{

　　　　　　　　　　string pageFilePath = Path.Combine(imageOutputPath, imageName + "_" + i.ToString() + "." + imageFormat.ToString());

Image img = _rasterizer.GetPage(desired_x_dpi, desired_y_dpi, i);

　　　　　　　　　　img.Save(pageFilePath, ImageFormat.Jpeg);

　　 }
                        _rasterizer.Dispose();
                    }
                    catch (Exception ex)
                    {
                        Log.writeLog("Exception:" + ex.ToString());
                        System.IO.File.Delete(destFile);
                    }
                    finally
                    {
                        Log.writeLog("finally：删除资料");
                        System.IO.File.Delete(destFile);
                        //System.IO.Direc

}

/// <summary>
        /// 根据源文件路径获取新重新命名的文件路径
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        static string GetFilePath(string filePath)
        {
            if (string.IsNullOrWhiteSpace(filePath))
            {
                return string.Empty;
            }
            else
            {
                return string.Format("{0}{1}{2}", filePath.Substring(0, filePath.LastIndexOf('\\') + 1), Guid.NewGuid().ToString("N").Replace("-", ""), filePath.Substring(filePath.LastIndexOf('.')));
            }
        }