无法计算从非空 XHTML 生成的 docx 文件中的字符数

Question

我使用 DocX4J 实现了一个到 DocX 的 XHTML 转换器。它可以毫无问题地创建 DocX 文件。

为了完成我的任务，我决定实施一个简单的测试。测试包括计算创建的 DocX 中的字符数 os，然后将其与 XHTML 中已知的字符数进行比较（参见下面的源代码）。

我的测试代码基于 DocX4J 站点的示例，但对我不起作用。虽然我可以看到我的转换器创建的 DocX 的内容等于 XHTML 文件的内容，但我的测试代码总是 returns 零到 DocX 文件的字符数。 :-\

有谁能帮我找出这个意外结果的原因吗？

提前致谢！

package main;

import java.io.File;
import java.io.IOException;
import java.io.StringWriter;

import org.docx4j.TextUtils;
import org.docx4j.jaxb.Context;
import org.docx4j.openpackaging.contenttype.ContentType;
import org.docx4j.openpackaging.exceptions.Docx4JException;
import org.docx4j.openpackaging.exceptions.InvalidFormatException;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.openpackaging.parts.PartName;
import org.docx4j.openpackaging.parts.WordprocessingML.AlternativeFormatInputPart;
import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart;
import org.docx4j.relationships.Relationship;
import org.docx4j.wml.CTAltChunk;
import org.docx4j.wml.Document;

/**
 * Count chars from a DocX file generated from a XHTML using Docx4J
 * 
 * @author Cláudio
 */
public class CountChars {

    public static void main(String[] args) {
 String xhtml = "<html><body><table border=\"1\"><tr><td>Propriedade</td><td>Amostra 1</td><td>Amostra 2</td></tr><tr><td>Prop1</td><td>10.0</td><td>111.0</td></tr><tr><td>Prop2</td><td>20.0</td><td>222.0</td></tr></table></body></html>";
 int expectedNChars = 57;

 WordprocessingMLPackage docx = export(xhtml);
 try {
     docx.save(new File("test.docx")); // Proves that docx is
                                // successfully created
 } catch (Docx4JException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
 }

 if (countCharacters(docx) == expectedNChars) {
     System.out.println("Success");
 } else {
     System.out.println("Fail");
 }
    }

    private static WordprocessingMLPackage export(String xhtml) {
 WordprocessingMLPackage wordMLPackage = null;
 AlternativeFormatInputPart afiPart = null;
 Relationship altChunkRel = null;

 try {
     wordMLPackage = WordprocessingMLPackage.createPackage();
     afiPart = new AlternativeFormatInputPart(new PartName("/hw.html"));
 } catch (InvalidFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
 }

 afiPart.setBinaryData(xhtml.getBytes());
 afiPart.setContentType(new ContentType("text/html"));

 try {
     altChunkRel = wordMLPackage.getMainDocumentPart().addTargetPart(
      afiPart);
 } catch (InvalidFormatException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
 }

 // .. the bit in document body
 CTAltChunk ac = Context.getWmlObjectFactory().createCTAltChunk();
 ac.setId(altChunkRel.getId());
 wordMLPackage.getMainDocumentPart().addObject(ac);

 // .. content type
 wordMLPackage.getContentTypeManager().addDefaultContentType("html",
         "text/html");

 return wordMLPackage;
    }

    /**
     * Counts chars (even whitespaces) in a docx.
     * 
     * Referência:
     * http://www.docx4java.org/forums/docx-java-f6/how-to-count-number
     * -of-characters-in-a-docx-file-t767.html
     * 
     * @param docx
     *            Document
     * 
     * @return Number of chars in the document
     */
    private static int countCharacters(WordprocessingMLPackage docx) {
 String strString = null;

 MainDocumentPart documentPart = docx.getMainDocumentPart();
 Document wmlDocument = documentPart.getJaxbElement();

 StringWriter strWriter = null;
 try {
     strWriter = new StringWriter();
     TextUtils.extractText(wmlDocument, strWriter);
     strString = strWriter.toString();
 } catch (Exception e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
 } finally {
     if (strWriter != null) {
  try {
      strWriter.close();
  } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
  }
     }
 }

 if (strString == null) {
     throw new NullPointerException();
 }

 return strString.length();
    }
}

Answer 1

您正在将 XHTML 添加为 AlternativeFormatInputPart (AFIP)，这通常由 Word 将 XHTML 转换为真正的 docx 内容。

同时，XHTML 内容不在 MainDocumentPart documentPart 中，它在 AFIP 中。所以当然计算 documentPart 中的字数不会给你你所希望的...

Answer 2

使用 docx4j 2.8.1 方法导出的正确实现应该如下：

private static WordprocessingMLPackage export(String xhtml) {
WordprocessingMLPackage wordMLPackage = null;

try {
    wordMLPackage = WordprocessingMLPackage.createPackage();
    List<Object> content = XHTMLImporter.convert(xhtml, null,
        wordMLPackage);
    wordMLPackage.getMainDocumentPart().getContent().addAll(content);
} catch (Docx4JException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

return wordMLPackage;
}

无法计算从非空 XHTML 生成的 docx 文件中的字符数

Cannot count number of characters in a docx file generated from a not empty XHTML

java

jaxb

xhtml

docx

docx4j