使用开放式xml时如何修改文件流中的内容? [英] how to modify content in filestream while using open xml?
问题描述
在下面的代码中，我将一些文件合并在一起，并将它们保存在test.docx文件中.但是，在合并每个文件之前，我想先替换一些用作占位符的内容控件的文本.有人可以告诉我该怎么做吗?
In the code below, I am merging some files together and saving them in the test.docx file. However, before I merg each file, I would like to first replace the text of some content controls which are used as place holders. Can someone show me how to do that?
假设我在template2中有一个内容控件，它被称为placeholder1.使用文件流时如何在此占位符中添加文本?
suppose I have one content control in template2 and it is called placeholder1. How can I add text to this placeholder while usig the filestream?
string fileName = Path.Combine(@"Docs\templates", "test.docx");
for (int i = 1; i < 3; i++)
{
string filePath = Path.Combine(@"Docs\templates", "report-Part" + i + ".docx");
//using (MemoryStream ms = new MemoryStream())
//{
//ms.Write(templateFile, 0, templateFile.Length);
using (WordprocessingDocument myDoc = WordprocessingDocument.Open(fileName, true))
{
MainDocumentPart mainPart = myDoc.MainDocumentPart;
string altChunkId = "AltChunkId" + Guid.NewGuid();
AlternativeFormatImportPart chunk = mainPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.WordprocessingML, altChunkId);
using (FileStream fileStream = File.Open(filePath, FileMode.Open))
{
chunk.FeedData(fileStream);
}
//chunk.FeedData(ms);
AltChunk altChunk = new AltChunk();
altChunk.Id = altChunkId;
Paragraph paragraph2 = new Paragraph() { RsidParagraphAddition = "00BE27E7", RsidRunAdditionDefault = "00BE27E7" };
Run run2 = new Run();
Break break1 = new Break() { Type = BreakValues.Page };
run2.Append(break1);
paragraph2.Append(run2);
mainPart.Document.Body.Append(paragraph2);
var lastParagraph = mainPart.Document.Body.Elements<Paragraph>().Last();
mainPart.Document.Body.InsertAfter(altChunk, lastParagraph);
mainPart.Document.Save();
myDoc.Close();
}
//ms.Position = 0;
////ms.ToArray();
//output = new byte[ms.ToArray().Length];
//ms.Read(output, 0, output.Length);
//}
推荐答案
下面的示例代码(作为xUnit单元测试编写)展示了如何实现您想做的事情.我添加了代码注释，以解释执行的操作和原因.
The following sample code, which is written as an xUnit unit test, shows how you can achieve what you want to do. I've added code comments to explain what is done and why.
public class AltChunkAssemblyTests
{
// Sample template file names for unit testing purposes.
private readonly string[] _templateFileNames =
{
"report-Part1.docx",
"report-Part2.docx",
"report-Part3.docx"
};
// Sample content maps for unit testing purposes.
// Each Dictionary<string, string> represents data used to replace the
// content of block-level w:sdt elements identified by w:tag values of
// "firstTag" and "secondTag".
private readonly List<Dictionary<string, string>> _contentMaps = new List<Dictionary<string, string>>
{
new Dictionary<string, string>
{
{ "firstTag", "report-Part1: First value" },
{ "secondTag", "report-Part1: Second value" }
},
new Dictionary<string, string>
{
{ "firstTag", "report-Part2: First value" },
{ "secondTag", "report-Part2: Second value" }
},
new Dictionary<string, string>
{
{ "firstTag", "report-Part3: First value" },
{ "secondTag", "report-Part3: Second value" }
}
};
[Fact]
public void CanAssembleDocumentUsingAltChunks()
{
// Create some sample "templates" (technically documents) for unit
// testing purposes.
CreateSampleTemplates();
// Create an empty result document.
using WordprocessingDocument wordDocument = WordprocessingDocument.Create(
"AltChunk.docx", WordprocessingDocumentType.Document);
MainDocumentPart mainPart = wordDocument.AddMainDocumentPart();
var body = new Body();
mainPart.Document = new Document(body);
// Add one w:altChunk element for each sample template, using the
// sample content maps for mapping sample data to the content
// controls contained in the templates.
for (var index = 0; index < 3; index++)
{
if (index > 0) body.AppendChild(new Paragraph(new Run(new Break { Type = BreakValues.Page })));
body.AppendChild(CreateAltChunk(_templateFileNames[index], _contentMaps[index], wordDocument));
}
}
private void CreateSampleTemplates()
{
// Create a sample template for each sample template file names.
foreach (string templateFileName in _templateFileNames)
{
CreateSampleTemplate(templateFileName);
}
}
private static void CreateSampleTemplate(string templateFileName)
{
// Create a new Word document with paragraphs marking the start and
// end of the template (for testing purposes) and two block-level
// structured document tags identified by w:tag elements with values
// "firstTag" and "secondTag" and values that are going to be
// replaced by the ContentControlWriter during document assembly.
using WordprocessingDocument wordDocument = WordprocessingDocument.Create(
templateFileName, WordprocessingDocumentType.Document);
MainDocumentPart mainPart = wordDocument.AddMainDocumentPart();
mainPart.Document =
new Document(
new Body(
new Paragraph(
new Run(
new Text($"Start of template '{templateFileName}'"))),
new SdtBlock(
new SdtProperties(
new Tag { Val = "firstTag" }),
new SdtContentBlock(
new Paragraph(
new Run(
new Text("First template value"))))),
new SdtBlock(
new SdtProperties(
new Tag { Val = "secondTag" }),
new SdtContentBlock(
new Paragraph(
new Run(
new Text("Second template value"))))),
new Paragraph(
new Run(
new Text($"End of template '{templateFileName}'")))));
}
private static AltChunk CreateAltChunk(
string templateFileName,
Dictionary<string, string> contentMap,
WordprocessingDocument wordDocument)
{
// Copy the template file contents to a MemoryStream to be able to
// update the content controls without altering the template file.
using FileStream fileStream = File.Open(templateFileName, FileMode.Open);
using var memoryStream = new MemoryStream();
fileStream.CopyTo(memoryStream);
// Open the copy of the template on the MemoryStream, update the
// content controls, save the updated template back to the
// MemoryStream, and reset the position within the MemoryStream.
using (WordprocessingDocument chunkDocument = WordprocessingDocument.Open(memoryStream, true))
{
var contentControlWriter = new ContentControlWriter(contentMap);
contentControlWriter.WriteContentControls(chunkDocument);
}
memoryStream.Seek(0, SeekOrigin.Begin);
// Create an AlternativeFormatImportPart from the MemoryStream.
string altChunkId = "AltChunkId" + Guid.NewGuid();
AlternativeFormatImportPart chunk = wordDocument.MainDocumentPart.AddAlternativeFormatImportPart(
AlternativeFormatImportPartType.WordprocessingML, altChunkId);
chunk.FeedData(memoryStream);
// Return the w:altChunk element to be added to the w:body element.
return new AltChunk { Id = altChunkId };
}
}
我已经使用创建的ContentControlWriter类测试了代码，以回答您有关如何 CodeSnippets GitHub存储库中找到.寻找 AltChunkAssemblyTests 和 ContentControlWriter .
I've tested the code, using the ContentControlWriter class I created to answer your other question on how to create a new document from word template with multiple pages using documentformat.openxml. It works nicely. The complete code can be found in my CodeSnippets GitHub repository. Look for AltChunkAssemblyTests and ContentControlWriter.
CreateSampleTemplates()方法创建三个示例文档.例如，report-Part1.docx的主文档部分具有以下内容:
The CreateSampleTemplates() method creates three sample documents. For example, the main document part of report-Part1.docx has the following contents:
<?xml version="1.0" encoding="utf-8"?>
<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
<w:body>
<w:p>
<w:r>
<w:t>Start of template 'report-Part1.docx'</w:t>
</w:r>
</w:p>
<w:sdt>
<w:sdtPr>
<w:tag w:val="firstTag" />
</w:sdtPr>
<w:sdtContent>
<w:p>
<w:r>
<w:t>First template value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:sdt>
<w:sdtPr>
<w:tag w:val="secondTag" />
</w:sdtPr>
<w:sdtContent>
<w:p>
<w:r>
<w:t>Second template value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:p>
<w:r>
<w:t>End of template 'report-Part1.docx'</w:t>
</w:r>
</w:p>
</w:body>
</w:document>
组装后并且没有让Word再次保存文档，AltChunk.docx的主要文档部分如下所示:
After assembly and without having Word save the document again, the main document part of AltChunk.docx looks like this:
<?xml version="1.0" encoding="utf-8"?>
<w:document xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main">
<w:body>
<w:altChunk r:id="AltChunkId81885280-e38d-4ffb-b8a3-38d96992c2eb" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" />
<w:p>
<w:r>
<w:br w:type="page" />
</w:r>
</w:p>
<w:altChunk r:id="AltChunkId6d862de7-c477-42bc-baa4-c42441e5b03b" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" />
<w:p>
<w:r>
<w:br w:type="page" />
</w:r>
</w:p>
<w:altChunk r:id="AltChunkIdbfd7ea64-4cd0-4acf-9d6f-f3d405c021ca" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" />
</w:body>
</w:document>
我不确定为什么您确切地使用那些w:altChunk元素和相关部分来组合多个Word文档.这需要Microsoft Word进行繁重的工作"，尽管在您的情况下，直接生成正确的标记可能非常容易.例如，将文档保存在Microsoft Word中后，文档的主要部分如下所示(带有其他XML命名空间，为清楚起见，我将其删除):
I'm not sure why exactly you are using those w:altChunk elements and related parts to combine several Word documents. This requires Microsoft Word to do the "heavy lifting", although in your case it might be very easy to produce the correct markup directly. For example, as soon as you save the document in Microsoft Word, the main document part looks as follows (with additional XML namespaces, which I removed for clarity):
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<w:document xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"
xmlns:w14="http://schemas.microsoft.com/office/word/2010/wordml"
mc:Ignorable="w14">
<w:body>
<w:p w14:paraId="76D6BC46" w14:textId="77777777" w:rsidR="00EA51EB" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>Start of template 'report-Part1.docx'</w:t>
</w:r>
</w:p>
<w:sdt>
<w:sdtPr>
<w:tag w:val="firstTag"/>
<w:id w:val="-1950995891"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="2701CE6E" w14:textId="77777777" w:rsidR="00EA51EB" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part1: First value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:sdt>
<w:sdtPr>
<w:tag w:val="secondTag"/>
<w:id w:val="551584029"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="0B591553" w14:textId="77777777" w:rsidR="00EA51EB" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part1: Second value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:p w14:paraId="7393CFF0" w14:textId="77777777" w:rsidR="00E60EE9" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>End of template 'report-Part1.docx'</w:t>
</w:r>
</w:p>
<w:p w14:paraId="089D32A3" w14:textId="77777777" w:rsidR="00E60EE9" w:rsidRDefault="00B25FEF">
<w:r>
<w:br w:type="page"/>
</w:r>
</w:p>
<w:p w14:paraId="11AC41DA" w14:textId="77777777" w:rsidR="00716CCA" w:rsidRDefault="00B25FEF">
<w:r>
<w:lastRenderedPageBreak/>
<w:t>Start of template 'report-Part2.docx'</w:t>
</w:r>
</w:p>
<w:sdt>
<w:sdtPr>
<w:tag w:val="firstTag"/>
<w:id w:val="-1559003811"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="1867093C" w14:textId="77777777" w:rsidR="00716CCA" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part2: First value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:sdt>
<w:sdtPr>
<w:tag w:val="secondTag"/>
<w:id w:val="-1480071868"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="43DA0FC0" w14:textId="77777777" w:rsidR="00716CCA" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part2: Second value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:p w14:paraId="1F9B0122" w14:textId="77777777" w:rsidR="00E60EE9" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>End of template 'report-Part2.docx'</w:t>
</w:r>
</w:p>
<w:p w14:paraId="18873AAA" w14:textId="77777777" w:rsidR="00E60EE9" w:rsidRDefault="00B25FEF">
<w:r>
<w:br w:type="page"/>
</w:r>
</w:p>
<w:p w14:paraId="16E23FE9" w14:textId="77777777" w:rsidR="003C3D2D" w:rsidRDefault="00B25FEF">
<w:r>
<w:lastRenderedPageBreak/>
<w:t>Start of template 'report-Part3.docx'</w:t>
</w:r>
</w:p>
<w:sdt>
<w:sdtPr>
<w:tag w:val="firstTag"/>
<w:id w:val="780077040"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="00BA914F" w14:textId="77777777" w:rsidR="003C3D2D" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part3: First value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:sdt>
<w:sdtPr>
<w:tag w:val="secondTag"/>
<w:id w:val="-823814304"/>
</w:sdtPr>
<w:sdtEndPr/>
<w:sdtContent>
<w:p w14:paraId="10653801" w14:textId="77777777" w:rsidR="003C3D2D" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>report-Part3: Second value</w:t>
</w:r>
</w:p>
</w:sdtContent>
</w:sdt>
<w:p w14:paraId="1622299A" w14:textId="77777777" w:rsidR="00E60EE9" w:rsidRDefault="00B25FEF">
<w:r>
<w:t>End of template 'report-Part3.docx'</w:t>
</w:r>
</w:p>
<w:sectPr w:rsidR="00E60EE9">
<w:pgSz w:w="12240" w:h="15840"/>
<w:pgMar w:top="1440" w:right="1440" w:bottom="1440" w:left="1440" w:header="708" w:footer="708" w:gutter="0"/>
<w:cols w:space="708"/>
<w:docGrid w:linePitch="360"/>
</w:sectPr>
</w:body>
</w:document>
Word添加w:sectPr元素，您不必添加w:sectPr元素(除非您想要特定的页面布局).它还添加了不需要的w:lastRenderedPageBreaks.此外，添加到w:p(Paragraph)元素的属性和添加到w:sdt元素的元素(例如，w:id，w:sdtEndPr)是可选的.
Word adds the w:sectPr element, which you don't have to add (unless you want a specific page layout). It also adds the w:lastRenderedPageBreaks which are not required. Further, the attributes added to the w:p (Paragraph) elements and the elements (e.g., w:id, w:sdtEndPr) added to the w:sdt element are optional.
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