通过使用Aspose您可以轻松的将您的文档转换成真正的图片格式,最好的保证您的内容将实际可见,与其他格式相比,它并不存在查看工具的安装问题。
准备工作：
1:下载Aspose组件包：http://download.csdn.net/detail/laoge/6931819
编写代码：
核心代码AsposeFileToImg，以下代码在文档页数超过100以上生成会变慢，页数越大生成越慢，在实际使用中请注意。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Reflection;
using System.Threading;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Diagnostics;
using Aspose.Cells;
namespace PdfOrImg
{
/// <summary>
/// 功能：
/// pdf,doc,docx,ppt,pptx,xls,xlsx文件转图片
/// 在当前文件下创建一个以文件名命名的文件夹，该文件夹的保存的是该文件生成是页图片
/// </summary>
public class AsposeFileToImg
{
private static string imageDirectoryPath = "";
public static void FileToImg(string filePath)
{
if (File.Exists(filePath))
{
FileInfo pdfFi = new FileInfo(filePath);
string filename = pdfFi.Name.Replace(pdfFi.Extension, "");
imageDirectoryPath = System.IO.Path.Combine(pdfFi.DirectoryName, filename);
if (!Directory.Exists(imageDirectoryPath))
{
Directory.CreateDirectory(imageDirectoryPath);
}
string a = Path.GetExtension(filePath).ToLower();
if (a == ".pdf")
{
PdfToImg(filePath);
}
else
{
if (a == ".doc" || a == ".docx")
{
DocToImg(filePath);
}
else
{
if (a == ".ppt")
{
PptToImg(filePath);
}
else if (a == ".pptx")
{
PptxToImg(filePath);
}
else
{
if (a == ".xls" || a == ".xlsx")
{
XlsToImg(filePath);
}
}
}
}
}
}
private static void PdfToImg(string filePath)
{
string filename = Path.GetFileNameWithoutExtension(filePath).ToLower();
FileStream docStream = new FileStream(filePath, FileMode.Open);
var pdf = new Aspose.Pdf.Document(docStream);
for (int i = 1; i < pdf.Pages.Count + 1; i++)
{
try
{
string imgpath = imageDirectoryPath + "/" + filename + "_" + i + ".jpg";
if (!File.Exists(imgpath))
{
using (FileStream imageStream = new FileStream(imgpath, FileMode.Create))
{
Aspose.Pdf.Devices.Resolution resolution = new Aspose.Pdf.Devices.Resolution(300);
Aspose.Pdf.Devices.JpegDevice jpegDevice = new Aspose.Pdf.Devices.JpegDevice(resolution, 100);
jpegDevice.Process(pdf.Pages[i], imageStream);
imageStream.Close();
}
}
}
catch (Exception)
{
}
}
}
private static void DocToImg(string filePath)
{
string filename = Path.GetFileNameWithoutExtension(filePath).ToLower();
var words = new Aspose.Words.Document(filePath);
Aspose.Words.Saving.ImageSaveOptions imageSaveOptions =
new Aspose.Words.Saving.ImageSaveOptions(Aspose.Words.SaveFormat.Jpeg);
imageSaveOptions.Resolution = 128;
int pageindex = 0;
int pagecount = words.PageCount;
for (int i = 1; i < pagecount + 1; i++)
{
try
{
string imgpath = imageDirectoryPath + "/" + filename + "_" + i + ".jpg";
if (!File.Exists(imgpath))
{
imageSaveOptions.PageIndex = pageindex;
words.Save(imgpath, imageSaveOptions);
pageindex++;
}
}
catch (Exception)
{
}
}
}
private static void PptToImg(string filePath)
{
string filename = Path.GetFileNameWithoutExtension(filePath).ToLower();
var ppt = new Aspose.Slides.Presentation(filePath);
string imgpath = imageDirectoryPath + "/" + filename + ".pdf";
if (!File.Exists(imgpath))
{
ppt.Save(imgpath, Aspose.Slides.Export.SaveFormat.Pdf);
}
PdfToImg(imgpath);
}
private static void PptxToImg(string filePath)
{
string filename = Path.GetFileNameWithoutExtension(filePath).ToLower();
var ppt = new Aspose.Slides.Pptx.PresentationEx(filePath);
string imgpath = imageDirectoryPath + "/" + filename + ".pdf";
if (!File.Exists(imgpath))
{
ppt.Save(imgpath, Aspose.Slides.Export.SaveFormat.Pdf);
}
PdfToImg(imgpath);
}
private static void XlsToImg(string filePath)
{
string filename = Path.GetFileNameWithoutExtension(filePath).ToLower();
Workbook book = new Workbook(filePath);
//创建一个图表选项的对象
Aspose.Cells.Rendering.ImageOrPrintOptions imgOptions = new Aspose.Cells.Rendering.ImageOrPrintOptions();
imgOptions.ImageFormat = ImageFormat.Jpeg;
int count = book.Worksheets.Count;
for (int i = 0; i < count; i++)
{
//获取一张工作表
Worksheet sheet = book.Worksheets[i];
//创建一个纸张底色渲染对象
Aspose.Cells.Rendering.SheetRender sr = new Aspose.Cells.Rendering.SheetRender(sheet, imgOptions);
for (int j = 0; j < sr.PageCount; j++)
{
string imgpath = imageDirectoryPath + "/" + filename + "_" + i + "_" + j + "_.jpg";
if (!File.Exists(imgpath))
{
sr.ToImage(j, imgpath);
}
}
}
}
}
}
调用代码：
using System;
using System.IO;
using System.Collections;
namespace PdfOrImg
{
//Adobe Acrobat9.0
class Program
{
static void Main(string[] args)
{
Console.WriteLine("========文件转图片开始========");
try
{
ArrayList alist = new ArrayList();
alist.Add("temp_pdf.pdf");
alist.Add("temp_ppt.ppt");
alist.Add("temp_pptx.pptx");
alist.Add("temp_doc.doc");
alist.Add("temp_docx.docx");
alist.Add("temp_xls.xls");
alist.Add("temp_xlsx.xlsx");
for (int i = 0; i < alist.Count; i++)
{
try
{
string pdfFilePath = alist[i].ToString();
FileInfo pdfFi = new FileInfo(pdfFilePath);
string filepath = pdfFi.FullName;
Console.WriteLine("正在转换" + pdfFilePath + "文件...");
AsposeFileToImg.FileToImg(filepath);
}
catch (Exception)
{
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
Console.WriteLine("========文件转图片结束========");
Console.Read();
}
}
}
运行情况：
根据文档名称建立同名的文件夹，并在文件夹中存放文档每一页的图片，图片命名格式：文件名_页码.jpg 效果如下：
获取代码：
http://download.csdn.net/detail/luomingui/9151083
时间： 2024-11-09 03:43:11