我想使用 Apache POI 将 HTML 作为 altChunk 添加到 DOCX 文件中。我知道 doc4jx 可以使用更简单的 API 来完成此操作，但出于技术原因，我需要使用 Apache POI。
使用 CT 类对 xml 进行低级操作有点棘手。我可以使用以下代码创建 altChunk：
import java.io.File;
import java.io.FileOutputStream;
import javax.xml.namespace.QName;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.xmlbeans.impl.values.XmlComplexContentImpl;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDocument1;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.impl.CTBodyImpl;
public class AltChunkTest {
public static void main(String[] args) throws Exception {
XWPFDocument doc = new XWPFDocument();
doc.createParagraph().createRun().setText("AltChunk below:");
QName ALTCHUNK = new QName ( "http://schemas.openxmlformats.org/wordprocessingml/2006/main" , "altChunk" ) ;
CTDocument1 ctDoc = doc.getDocument() ;
CTBodyImpl ctBody = (CTBodyImpl) ctDoc. getBody();
XmlComplexContentImpl xcci = ( XmlComplexContentImpl ) ctBody.get_store().add_element_user(ALTCHUNK);
// what's need to now add "<b>Hello World!</b>"
FileOutputStream out = new FileOutputStream(new File("test.docx"));
doc.write(out);
}
}
但是我现在如何将 html 内容添加到“xcci”呢？
In Office Open XML for Word (*.docx) the altChunk提供了一种使用纯HTML描述文档部分。
关于以下两个重要注意事项altChunk:
第一：它仅用于导入内容。如果您使用打开文档Word并保存它，新保存的文档将不包含替代格式内容部分，也不包含引用它的altChunk标记。 Word 将所有导入的内容保存为默认值Office Open XML元素。
第二：大多数应用程序，除了Word哪些人能够阅读*.docx也会not阅读altChunk内容根本。例如Libreoffice or OpenOffice Writer will not阅读altChunk内容以及apache poi will not阅读altChunk打开时的内容*.docx file.
How is altChunk实施于*.docx ZIP文件结构？
有/word/*.html文件在*.docx ZIP文件。这些由 Id 引用/word/document.xml as <w:altChunk r:id="htmlDoc1"/>例如。 Id 和 ID 之间的关系/word/*.html文件给出在/word/_rels/document.xml.rels as <Relationship Id="htmlDoc1" Target="htmlDoc1.html" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/aFChunk"/>例如。
所以我们首先需要POIXMLDocumentParts 为/word/*.html文件和POIXMLRelations 表示 Id 和/word/*.html文件。以下代码提供了一个扩展 POIXMLDocumentPart 的包装类/word/htmlDoc#.html*.docx ZIP 存档中的文件。这还提供了操作 HTML 的方法。它还提供了一种创建方法/word/htmlDoc#.html*.docx ZIP 存档中的文件并与其创建关系。
Code:
import java.io.*;
import org.apache.poi.*;
import org.apache.poi.ooxml.*;
import org.apache.poi.openxml4j.opc.*;
import org.apache.poi.xwpf.usermodel.*;
public class CreateWordWithHTMLaltChunk {
//a method for creating the htmlDoc /word/htmlDoc#.html in the *.docx ZIP archive
//String id will be htmlDoc#.
private static MyXWPFHtmlDocument createHtmlDoc(XWPFDocument document, String id) throws Exception {
OPCPackage oPCPackage = document.getPackage();
PackagePartName partName = PackagingURIHelper.createPartName("/word/" + id + ".html");
PackagePart part = oPCPackage.createPart(partName, "text/html");
MyXWPFHtmlDocument myXWPFHtmlDocument = new MyXWPFHtmlDocument(part, id);
document.addRelation(myXWPFHtmlDocument.getId(), new XWPFHtmlRelation(), myXWPFHtmlDocument);
return myXWPFHtmlDocument;
}
public static void main(String[] args) throws Exception {
XWPFDocument document = new XWPFDocument();
XWPFParagraph paragraph;
XWPFRun run;
MyXWPFHtmlDocument myXWPFHtmlDocument;
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("Default paragraph followed by first HTML chunk.");
myXWPFHtmlDocument = createHtmlDoc(document, "htmlDoc1");
myXWPFHtmlDocument.setHtml(myXWPFHtmlDocument.getHtml().replace("<body></body>",
"<body><p>Simple <b>HTML</b> <i>formatted</i> <u>text</u></p></body>"));
document.getDocument().getBody().addNewAltChunk().setId(myXWPFHtmlDocument.getId());
paragraph = document.createParagraph();
run = paragraph.createRun();
run.setText("Default paragraph followed by second HTML chunk.");
myXWPFHtmlDocument = createHtmlDoc(document, "htmlDoc2");
myXWPFHtmlDocument.setHtml(myXWPFHtmlDocument.getHtml().replace("<body></body>",
"<body>" +
"<table>"+
"<caption>A table></caption>" +
"<tr><th>Name</th><th>Date</th><th>Amount</th></tr>" +
"<tr><td>John Doe</td><td>2018-12-01</td><td>1,234.56</td></tr>" +
"</table>" +
"</body>"
));
document.getDocument().getBody().addNewAltChunk().setId(myXWPFHtmlDocument.getId());
FileOutputStream out = new FileOutputStream("CreateWordWithHTMLaltChunk.docx");
document.write(out);
out.close();
document.close();
}
//a wrapper class for the htmlDoc /word/htmlDoc#.html in the *.docx ZIP archive
//provides methods for manipulating the HTML
//TODO: We should *not* using String methods for manipulating HTML!
private static class MyXWPFHtmlDocument extends POIXMLDocumentPart {
private String html;
private String id;
private MyXWPFHtmlDocument(PackagePart part, String id) throws Exception {
super(part);
this.html = "<!DOCTYPE html><html><head><meta http-equiv=\"content-type\" content=\"text/html; charset=utf-8\"><style></style><title>HTML import</title></head><body></body>";
this.id = id;
}
private String getId() {
return id;
}
private String getHtml() {
return html;
}
private void setHtml(String html) {
this.html = html;
}
@Override
protected void commit() throws IOException {
PackagePart part = getPackagePart();
OutputStream out = part.getOutputStream();
Writer writer = new OutputStreamWriter(out, "UTF-8");
writer.write(html);
writer.close();
out.close();
}
}
//the XWPFRelation for /word/htmlDoc#.html
private final static class XWPFHtmlRelation extends POIXMLRelation {
private XWPFHtmlRelation() {
super(
"text/html",
"http://schemas.openxmlformats.org/officeDocument/2006/relationships/aFChunk",
"/word/htmlDoc#.html");
}
}
}
注意：由于使用altChunk此代码需要所有模式的完整 jarooxml-schemas-*.jar如中提到的apache poi 常见问题解答-N10025.
Result:
