1 #region 将Word文档转化为图片
2 /// <summary>
3 /// 将Word文档转化为图片
4 /// </summary>
5 /// <param name="wordpath">需要转换的word文档的全路径</param>
6 public void Word_Convert2Image(string wordpath)
7 {
8 //第一步：将Word文档转化为Pdf文档（中间过程）
9 Aspose.Words.Document doc = new Aspose.Words.Document(wordpath);
10 //生成的pdf的路径
11 string Pdfpath = Server.MapPath("images") + "Word2Pdf.pdf";
12 doc.Save(Pdfpath, Aspose.Words.SaveFormat.Pdf); //生成中间文档pdf
13
14 //第二部：开始把第一步中转化的pdf文档转化为图片
15 int i = 1;
16 Aspose.Pdf.Document pdfDocument = new Aspose.Pdf.Document(Pdfpath);
17 while (i <= pdfDocument.Pages.Count)
18 {
19 if (!string.IsNullOrEmpty(Pdfpath))
20 {
21 GetImage(Pdfpath, i);
22 GC.Collect(); //回收内存
23 }
24 i++;
25 }
26 //图片转化完成之后，删除中间过程产生的pdf文档
27 if (File.Exists(Pdfpath))
28 File.Delete(Pdfpath);
29 }
30 #endregion
31 #region 将pdf转化为图片
32 /// <summary>
33 /// 将PDF 相应的页转换为图片
34 /// </summary>
35 /// <param name="strPDFpath">PDF 路径</param>
36 /// <param name="Page">需要转换的页页码</param>
37 private void GetImage(string strPDFpath, int Page)
38 {
39 GC.Collect();
40 string strSavePath = Server.MapPath("images");
41 byte[] ImgData = GetImgData(strPDFpath, Page);
42 MemoryStream ms = new MemoryStream(ImgData, 0, ImgData.Length);
43 Bitmap returnImage = (Bitmap)Bitmap.FromStream(ms);
44 string picName=string.Format("{0}_{1}.jpg", CreatePicName(),Page);
45 string strImgPath = Path.Combine(strSavePath, picName); //图片名称可在此修改
46 returnImage.Save(strImgPath);
47 returnImage.Dispose();
48 ms.Dispose();
49 AddImage(Page, picName); //将图片添加到数据库
50 }
51 /// <summary>
52 /// 从PDF中获取首页的图片
53 /// </summary>
54 /// <param name="PDFPath">PDF 文件路径</param>
55 /// <param name="Page">需要获取的第几页</param>
56 /// <returns></returns>
57 private byte[] GetImgData(string PDFPath, int Page)
58 {
59 System.Drawing.Image img = PDFView.ConvertPDF.PDFConvert.GetPageFromPDF(PDFPath, Page, 200, "", true);
60 return GetDataByImg(img);//读取img的数据并返回
61 }
62 /// <summary>
63 /// 将单页的PDF转换为图片
64 /// </summary>
65 /// <param name="_image"></param>
66 /// <returns></returns>
67 private byte[] GetDataByImg(System.Drawing.Image _image)
68 {
69 System.IO.MemoryStream Ms = new MemoryStream();
70 _image.Save(Ms, System.Drawing.Imaging.ImageFormat.Jpeg);
71 byte[] imgdata = new byte[Ms.Length];
72 Ms.Position = 0;
73 Ms.Read(imgdata, 0, Convert.ToInt32(Ms.Length));
74 Ms.Close();
75 return imgdata;
76 }
77 #endregion
