使用Java Apache POI从docx文件中更改特定单词的字体样式

Question

我只是做了类似的事情，在本例中，代码工作，我只想将单词“ipsum”更新为“hello world”：

   File file = new File("document.docx");
   FileInputStream fis = new FileInputStream(file.getAbsolutePath());

   XWPFDocument document = new XWPFDocument(fis);

   List<XWPFParagraph> paragraphs = document.getParagraphs();

    for (XWPFParagraph p: paragraphs) {
        List<XWPFRun> runs = p.getRuns();
        for (XWPFRun r: runs) {
           String endText = r.getText(0).replaceFirst("ipsum" , "hello world");
           r.setText(endText,0);
        }
    }

        document.write(new FileOutputStream(uuid + ".docx"));
        fis.close();
        document.close();

但是如果我试图改变文本样式，比如粗体，甚至改变字体颜色，所有的“运行”都会改变，不仅仅是我搜索的世界。我必须做什么来改变字体样式，只有单词“IPSUM”在示例文本？

Answer 1

您已经得出结论，文本运行是可能具有文本格式的最低文本实体。因此，需要将一个或多个单词以不同的格式转换成它们自己的文本运行。然后可以格式化这些文本运行。

我已经在将XWPFRun拆分为多个运行中回答了这个问题。但我会为你的特例再出示一次。

具有souce.docx，如下所示：

import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.*;

import java.util.*;
import java.awt.Desktop;

public class WordFormatWords {

 static void cloneRunProperties(XWPFRun source, XWPFRun dest) { // clones the underlying w:rPr element
  CTR tRSource = source.getCTR();
  CTRPr rPrSource = tRSource.getRPr();
  if (rPrSource != null) {
   CTRPr rPrDest = (CTRPr)rPrSource.copy();
   CTR tRDest = dest.getCTR();
   tRDest.setRPr(rPrDest);
  }
 }

 static void formatWord(XWPFParagraph paragraph, String keyword, Map<String, String> formats) {
  int runNumber = 0;
  while (runNumber < paragraph.getRuns().size()) { //go through all runs, we cannot use for each since we will possibly insert new runs
   XWPFRun run = paragraph.getRuns().get(runNumber);
   XWPFRun run2 = run;
   String runText = run.getText(0);
   if (runText != null && runText.contains(keyword)) { //if we have a run with keyword in it, then

    char[] runChars = runText.toCharArray(); //split run text into characters
    StringBuffer sb = new StringBuffer();
    for (int charNumber = 0; charNumber < runChars.length; charNumber++) { //go through all characters in that run
     sb.append(runChars[charNumber]); //buffer all characters
     runText = sb.toString();
     if (runText.endsWith(keyword)) { //if the bufferend character stream ends with the keyword  
      //set all chars, which are current buffered, except the keyword, as the text of the actual run
      run.setText(runText.substring(0, runText.length() - keyword.length()), 0); 
      run2 = paragraph.insertNewRun(++runNumber); //insert new run for the formatted keyword
      cloneRunProperties(run, run2); // clone the run properties from original run
      run2.setText(keyword, 0); // set the keyword in run
      for (String toSet : formats.keySet()) { // do the additional formatting
       if ("color".equals(toSet)) {
        run2.setColor(formats.get(toSet));
       } else if ("bold".equals(toSet)) {
        run2.setBold(Boolean.valueOf(formats.get(toSet)));
       }
      }
      run2 = paragraph.insertNewRun(++runNumber); //insert a new run for the next characters
      cloneRunProperties(run, run2); // clone the run properties from original run
      run = run2;
      sb = new StringBuffer(); //empty the buffer
     } 
    }
    run.setText(sb.toString(), 0); //set all characters, which are currently buffered, as the text of the actual run

   }
   runNumber++;
  }
 }


 public static void main(String[] args) throws Exception {

  XWPFDocument doc = new XWPFDocument(new FileInputStream("source.docx"));

  String[] keywords = new String[]{"ipsum"};
  Map<String, String> formats = new HashMap<String, String>();
  formats.put("bold", "true");
  formats.put("color", "DC143C");

  for (XWPFParagraph paragraph : doc.getParagraphs()) { //go through all paragraphs
   for (String keyword : keywords) {
    formatWord(paragraph, keyword, formats);
   }
  }

  FileOutputStream out = new FileOutputStream("result.docx");
  doc.write(out);
  out.close();
  doc.close();

  System.out.println("Done");
  Desktop.getDesktop().open(new File("result.docx"));

 }
}