如何使用 apache poi 更改特定 word 文档的颜色? [英] How do I change color of a particular word document using apache poi?

问题描述

当前输出:

需要的输出:

上面是.docx的快照，下面是代码示例代码，我想在将@替换后改变a的颜色.r.setColor("DC143C") 不起作用:

above are the snapshots of the .docx and below is the code sample code, I want to change the color of a after it is replaced by @. r.setColor("DC143C") doesn't work:

for (XWPFParagraph p : docx.getParagraphs()) {
        List<XWPFRun> runs = p.getRuns();
        if (runs != null) {
            for (XWPFRun r : runs) {
                String origText = r.getText(0);
                if (origText != null && origText.contains("a")) {
                    origText = origText.replace("a", "@");
                    r.setText(origText, 0);
                }
            }
        }
    }

推荐答案

如果只需要改变一个字符的颜色，那么这个字符必须自己运行.这是因为只有跑步可以设置样式.

If the need is to change the color of just one character then this character must be in its own run. This is because only runs can be styled.

如果您有一个包含文本的文档，那么您必须遍历所有现有的运行，并可能将这些运行拆分为多个运行.因此，每个应单独设置样式的字符串部分必须在其自己的运行中，如果它只有一个字符.

If you have a document containing text already then you must run through all already existing runs and possible split those runs into multiple ones. As the result each string part which shall be styled separately must be in its own run, also if it is only one character.

示例:

import java.io.*;
import org.apache.poi.xwpf.usermodel.*;

import java.awt.Desktop;

import org.apache.poi.openxml4j.exceptions.InvalidFormatException;

public class WordReadAndWrite {

 public static void main(String[] args) throws IOException, InvalidFormatException {

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

  for (XWPFParagraph p : doc.getParagraphs()) { //go through all paragraphs
   int runNumber = 0;
   while (runNumber < p.getRuns().size()) { //go through all runs, we cannot use for each since we will possibly insert new runs
    XWPFRun r = p.getRuns().get(runNumber);
    String runText = r.getText(0);
    if (runText != null && runText.contains("a")) { //if we have a run with an "a" in it, then
     char[] runChars = runText.toCharArray();
     StringBuffer sb = new StringBuffer();
     for (int charNumber = 0; charNumber < runChars.length; charNumber++) { //go through all characters in that run     
      if (runChars[charNumber] == 'a') { //if the charcter is an 'a' then      
       r.setText(sb.toString(), 0); //set all characters, which are current buffered, as the text of the actual run
       r = p.insertNewRun(++runNumber); //insert new run for the '@' as the replacement for the 'a'
       r.setText("@", 0);
       r.setColor("DC143C");
       r = p.insertNewRun(++runNumber); //insert new run for the next characters
       sb = new StringBuffer(); //empty buffer
      } else {
       sb.append(runChars[charNumber]); //buffer all characters which are not 'a's
      }
     }
     r.setText(sb.toString(), 0); //set all characters, which are current buffered, as the text of the actual run
    }
    runNumber++;
   }
  }


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

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

 }
}

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