请问java中如何根据已有word文件快速生成目录和页码

Question

我使用docx4j根据已有文件（文件中有图片、表格、复选框等非文字内容）生成目录和页码，虽然可以生成，但是耗时太长，需要70多秒，且有很多ERROR和WARN日志，需要优化，并缩短时间消耗。
代码如下

import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.toc.TocGenerator;

import java.io.File;


public class WordWithTOCDocx4j4 {

    public static void main(String[] args) throws Exception {
        // 指定DOCX文件路径
        File docxFile = new File("D:\\projects\\test\\a.docx");
        // 加载DOCX文件并创建WordprocessingMLPackage对象
        WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.load(docxFile);
        TocGenerator tocGenerator = new TocGenerator(wordMLPackage);
        tocGenerator.generateToc( 0, " TOC \\o \"1-3\" \\h \\z \\u ", false);
        // 保存文档
        wordMLPackage.save(new File("D:\\projects\\test\\aWithTOC222.docx"));
    }

}

maven依赖包如下：

<properties>
    <docx4j.version>11.4.8</docx4j.version>
</properties>
  
<dependency>
  <groupId>org.docx4j</groupId>
  <artifactId>docx4j-core</artifactId>
  <version>${docx4j.version}</version>
</dependency>
<dependency>
  <groupId>org.docx4j</groupId>
  <artifactId>docx4j-JAXB-MOXy</artifactId>
  <version>${docx4j.version}</version>
  <exclusions>
    <exclusion>
      <groupId>org.docx4j</groupId>
      <artifactId>docx4j-core</artifactId>
    </exclusion>
  </exclusions>
</dependency>

<dependency>
  <groupId>org.docx4j</groupId>
  <artifactId>docx4j-ImportXHTML</artifactId>
  <version>${docx4j.version}</version>
  <exclusions>
    <exclusion>
      <groupId>org.docx4j</groupId>
      <artifactId>docx4j-core</artifactId>
    </exclusion>
  </exclusions>
</dependency>

<dependency>
  <groupId>org.docx4j</groupId>
  <artifactId>docx4j-export-fo</artifactId>
  <version>${docx4j.version}</version>
  <exclusions>
    <exclusion>
      <groupId>org.docx4j</groupId>
      <artifactId>docx4j-core</artifactId>
    </exclusion>
  </exclusions>
</dependency>

通过日志分析，像是 org.docx4j和org.apache.fop.apps.FOUserAgent无法获取可用的字体和格式，耗费了较多的时间并且出现了错误。我想通过给fop增加字体样式的设置，但是没有找到相关的方法。请大家帮忙看看，谢谢。

ERROR日志如下：

ERROR org.docx4j.model.listnumbering.ListLevel Unhandled numFmt: CHINESE_COUNTING
ERROR org.docx4j.wml.Highlight Can't set w:highlight from 'none'
ERROR org.docx4j.model.images.WordXmlPictureE10 org.docx4j.vml.CTShape
ERROR org.docx4j.model.images.WordXmlPictureE10 Couldn't find shape!
ERROR org.docx4j.model.images.WordXmlPictureE10 WordXmlPictureE10 object was null!
ERROR org.docx4j.convert.out.fo.FOPAreaTreeHelper For @bpda, 
<block bap="0 0 0 0" bpd="0" ipd="511755" ipda="511755" visibility="visible"/>

ERROR org.docx4j.convert.out.fo.FOPAreaTreeHelper For input string: ""
java.lang.NumberFormatException: For input string: ""
    at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
    at java.base/java.lang.Integer.parseInt(Integer.java:672)
    at java.base/java.lang.Integer.parseInt(Integer.java:778)
    at org.docx4j.convert.out.fo.FOPAreaTreeHelper.calculateHFExtents(FOPAreaTreeHelper.java:368)
    at org.docx4j.convert.out.fo.LayoutMasterSetBuilder.fixExtents(LayoutMasterSetBuilder.java:146)
    at org.docx4j.convert.out.fo.LayoutMasterSetBuilder.getLayoutMasterSetFragment(LayoutMasterSetBuilder.java:97)
    at org.docx4j.convert.out.fo.XsltFOFunctions.getLayoutMasterSetFragment(XsltFOFunctions.java:85)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
    at java.base/java.lang.reflect.Method.invoke(Method.java:580)
    at org.docx4j.org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:343)
    at org.docx4j.org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:440)
    at org.docx4j.org.apache.xalan.extensions.ExtensionsTable.extFunction(ExtensionsTable.java:226)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.extFunction(TransformerImpl.java:491)
    at org.docx4j.org.apache.xpath.functions.FuncExtFunction.execute(FuncExtFunction.java:208)
    at org.docx4j.org.apache.xpath.XPath.execute(XPath.java:342)
    at org.docx4j.org.apache.xalan.templates.ElemCopyOf.execute(ElemCopyOf.java:134)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2418)
    at org.docx4j.org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:1376)
    at org.docx4j.org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395)
    at org.docx4j.org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:178)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2418)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2288)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1374)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:727)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1291)
    at org.docx4j.org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1269)
    at org.docx4j.XmlUtils.transform(XmlUtils.java:1518)
    at org.docx4j.XmlUtils.transform(XmlUtils.java:1337)
    at org.docx4j.convert.out.common.AbstractXsltExporterDelegate.process(AbstractXsltExporterDelegate.java:66)
    at org.docx4j.convert.out.common.AbstractWmlExporter.process(AbstractWmlExporter.java:82)
    at org.docx4j.convert.out.common.AbstractWmlExporter.process(AbstractWmlExporter.java:32)
    at org.docx4j.convert.out.common.AbstractExporter.export(AbstractExporter.java:80)
    at org.docx4j.Docx4J.toFO(Docx4J.java:711)
    at org.docx4j.toc.TocGenerator.getPageNumbersMapViaFOP(TocGenerator.java:767)
    at org.docx4j.toc.TocGenerator.getPageNumbersMap(TocGenerator.java:652)
    at org.docx4j.toc.TocGenerator.populateToc(TocGenerator.java:399)
    at org.docx4j.toc.TocGenerator.generateToc(TocGenerator.java:263)
    at org.docx4j.toc.TocGenerator.generateToc(TocGenerator.java:231)
    at org.docx4j.toc.TocGenerator.generateToc(TocGenerator.java:191)
    at com.anan.test.poi.tl.WordWithTOCDocx4j4.main(WordWithTOCDocx4j4.java:22)

WARN日志如下：

WARN  org.docx4j.fonts.GlyphCheck Couldn't get font 宋体
WARN  org.docx4j.fonts.RunFontSelector TODO: how to handle char '“' in range c>='\u2000' && c<='\u2EFF'?
WARN  org.docx4j.fonts.IdentityPlusMapper - - No physical font for: 黑体
WARN  org.docx4j.fonts.fop.util.FopConfigUtil Document font 黑体 is not mapped to a physical font!
WARN  org.docx4j.fonts.PhysicalFonts No entry in MicrosoftFontsRegistry for: Calibri Light
WARN  org.docx4j.model.styles.StyleUtil TODO: implementation is incomplete
WARN  org.docx4j.model.properties.paragraph.Indent Only left/first-line indentation is handled at present
WARN  org.docx4j.convert.out.common.AbstractConversionContext NOT IMPLEMENTED: support for w:tblPrEx; 
WARN  org.apache.fop.apps.FOUserAgent Font "Symbol,normal,700" not found. Substituting with "Symbol,normal,400".
WARN  org.apache.fop.apps.FOUserAgent Font "ZapfDingbats,normal,700" not found. Substituting with "ZapfDingbats,normal,400".
WARN  org.apache.fop.apps.FOUserAgent Font "Times New Roman,normal,400" not found. Substituting with "any,normal,400".
WARN  org.apache.fop.apps.FOUserAgent Font "Calibri Light,normal,700" not found. Substituting with "any,normal,700".
WARN  org.apache.fop.apps.FOUserAgent Font "SimSun,normal,700" not found. Substituting with "any,normal,700".
WARN  org.apache.fop.apps.FOUserAgent Font "SimSun,normal,400" not found. Substituting with "any,normal,400".
WARN  org.apache.fop.apps.FOUserAgent Glyph "第" (0x7b2c) not available in font "Times-Roman".
WARN  org.apache.fop.apps.FOUserAgent Glyph "哈" (0x54c8) not available in font "Times-Bold".

Answer 1

阿里嘎多学长整理AIGC生成，因移动端显示问题导致当前答案未能完全显示，请使用PC端查看更加详细的解答过程

问题解答

你使用docx4j库根据已有word文件生成目录和页码，但是遇到了性能问题，耗时太长，且有很多ERROR和WARN日志。为了优化性能和缩短时间消耗，可以尝试以下几点：

1. 使用缓存：可以使用缓存机制来存储已经处理过的部分，避免重复处理相同的内容。
2. 使用多线程：可以使用多线程技术来并发处理不同的部分，提高处理速度。
3. 优化代码：可以对代码进行优化，例如使用更高效的算法、减少不必要的计算等。
4. 使用其他库：可以尝试使用其他库，例如Apache POI，来生成目录和页码，可能会有更好的性能。

以下是一个使用多线程技术来优化代码的示例：

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

// ...

ExecutorService executor = Executors.newFixedThreadPool(4); // 创建4个线程池

// ...

executor.submit(() -> {
    // 处理目录
    // ...
});

executor.submit(() -> {
    // 处理页码
    // ...
});

// ...

executor.shutdown(); // 关闭线程池

需要注意的是，这只是一个简单的示例，实际情况中可能需要根据具体情况进行调整和优化。

代码核心部分

ExecutorService executor = Executors.newFixedThreadPool(4);
// ...
executor.submit(() -> {
    // 处理目录
    // ...
});
executor.submit(() -> {
    // 处理页码
    // ...
});
executor.shutdown();

问题解决方案

1. 使用缓存
2. 使用多线程
3. 优化代码
4. 使用其他库