Aspmvcword预览与打印
解决⽅案：
1. 在后台把word⽂件转化成pdf，在前台⽤iframe显⽰pdf，打印iframe，即可。
优点：⽤户体验好。
缺点：不⽀持IE。
实现：
引⽤netoffice组件
主要代码：
Word.Application wordApplication = new Word.Application();
Word.Document pDoc = wordApplication.Documents.Open(path);
pDoc.Activate();
pDoc.SaveAs(pdf, WdSaveFormat.wdFormatPDF);
wordApplication.Quit();
wordApplication.Dispose();
2. 在后台把word转化⾯html，读取html⽂本，增加打印脚本，输出到前台。
优点：浏览器⽀持的好。
缺点：⽤html显⽰word，不是太好看。
实现：
引⽤：
主要代码：
public class WordToHtmlConverter
{
///<summary>
/// Convert Docx to Html
///</summary>
///<param name="source">source file full name</param>
///<returns>htmlstring</returns>
public static string ToHtml(string source)
{
var htmlString = string.Empty;
var file = new FileInfo(source);
byte[] bytes = File.ReadAllBytes(file.FullName);
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(bytes, 0, bytes.Length);
using (var wDoc = WordprocessingDocument.Open(memoryStream, true))
{
var imageFolder = source.Substring(0, source.Length - 5) + "_files";
int imageCounter = 0;
HtmlConverterSettings settings = new HtmlConverterSettings()
{
AdditionalCss = "body { margin: 1cm auto; max-width: 20cm; padding: 0; }",
PageTitle = "新系统",
FabricateCssClasses = true,
CssClassPrefix = "pt-",
RestrictToSupportedLanguages = false,
RestrictToSupportedNumberingFormats = false,
ImageHandler = imageInfo =>
{
DirectoryInfo localDirInfo = new DirectoryInfo(imageFolder);
if (!localDirInfo.Exists)
localDirInfo.Create();
++imageCounter;
string extension = imageInfo.ContentType.Split('/')[1].ToLower();
ImageFormat imageFormat = null;
if (extension == "png")
imageFormat = ImageFormat.Png;
else if (extension == "gif")
imageFormat = ImageFormat.Gif;
else if (extension == "bmp")
imageFormat = ImageFormat.Bmp;
else if (extension == "jpeg")
imageFormat = ImageFormat.Jpeg;
else if (extension == "tiff")
{
// Convert tiff to gif.
extension = "gif";
imageFormat = ImageFormat.Gif;
}
else if (extension == "x-wmf")
{
extension = "wmf";
imageFormat = ImageFormat.Wmf;
}
/
/ If the image format isn't one that we expect, ignore it,
// and don't return markup for the link.
if (imageFormat == null)
return null;
string imageFileName = imageFolder + "/image" +
imageCounter.ToString() + "." + extension;
try
{
imageInfo.Bitmap.Save(imageFileName, imageFormat);
}
catch (System.Runtime.InteropServices.ExternalException)
{
return null;
}
string imageSource = localDirInfo.Name + "/image" +
imageCounter.ToString() + "." + extension;
XElement img = new XElement(Xhtml.img,
new XAttribute(NoNamespace.src, imageSource),
imageInfo.ImgStyleAttribute,
imageInfo.AltText != null ?
new XAttribute(NoNamespace.alt, imageInfo.AltText) : null);
return img;
}
};
XElement htmlElement = HtmlConverter.ConvertToHtml(wDoc, settings);
// Produce HTML document with <!DOCTYPE html > declaration to tell the browser we are using HTML5.
var html = new XDocument(new XDocumentType("html", null, null, null), htmlElement);
htmlString = html.ToString(SaveOptions.DisableFormatting);
}
html document是什么}
return htmlString;
}
}
public string NoticePrint(NoticeResult model)
{
// 第⼀步，⽣成新的doc⽂档，替换模板⽂件中的标签，这⾥⽤的是NPOI，这个⽅法就不显⽰了，没什么东西。
var path = this.GetDocFileName(model);
// 第⼆步，把doc⽂件，转化成html⽂件
var html = WordToHtmlConverter.ToHtml(path);
// 第三步，对html追加script脚本
var result = html + GetPrintScript();
// 第四步，返回
return result;
}
private string GetPrintScript()
{
return@"<script type='text/javascript'> load = function() { window.print(); };</script >";        }
Controller Code:
public ActionResult Print(NoticeResult model)
{
var result = new Response<bool>();
if (model != null)
{
var html = this.service.NoticePrint(model);
return Content(html, "text/html");
}
result.ErrMsg = "打印参数异常";
return Json(result);
}
代码有删减，不能拿来直接⽤

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