替换Apache POI XWPF中的文本不起作用

Question

我目前正在尝试编写上一篇名为Replacing a text in Apache POI XWPF的文章中提到的代码。

我已经尝试了下面的方法，它是有效的，但我不知道我是否错过了什么。当我运行代码时，文本不会被替换，而是添加到所搜索的内容的末尾。例如，我创建了一个基本的word文档，并输入了文本"test“。在下面的代码中，当我运行它时，我最终得到了包含文本"testDOG“的新文档。

我不得不将原始代码从String text = r.getText(0)更改为String text = r.toString()，因为我在运行代码时不断得到一个NullError。

import java.io.*;
import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;


public class testPOI {

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

    String filepath = "F:\\MASTER_DOC.docx";
    String outpath = "F:\\Test.docx";

    XWPFDocument doc = new XWPFDocument(OPCPackage.open(filepath));
    for (XWPFParagraph p : doc.getParagraphs()){
        for (XWPFRun r : p.getRuns()){
            String text = r.toString();
            if(text.contains("test")) {
                text = text.replace("test", "DOG");
                r.setText(text);
            }
        }
    }
   doc.write(new FileOutputStream(outpath));
}

编辑:感谢大家的帮助。我浏览了一下，在Replace table column value in Apache POI上找到了一个解决方案

Answer 1

此方法替换段落中的搜索字符串，并且能够处理跨越多个运行的字符串。

  private long replaceInParagraphs(Map<String, String> replacements, List<XWPFParagraph> xwpfParagraphs) {
    long count = 0;
    for (XWPFParagraph paragraph : xwpfParagraphs) {
      List<XWPFRun> runs = paragraph.getRuns();

      for (Map.Entry<String, String> replPair : replacements.entrySet()) {    
        String find = replPair.getKey();
        String repl = replPair.getValue();
        TextSegement found = paragraph.searchText(find, new PositionInParagraph());
        if ( found != null ) {
          count++;
          if ( found.getBeginRun() == found.getEndRun() ) {
            // whole search string is in one Run
            XWPFRun run = runs.get(found.getBeginRun());
            String runText = run.getText(run.getTextPosition());
            String replaced = runText.replace(find, repl);
            run.setText(replaced, 0);
          } else {
            // The search string spans over more than one Run
            // Put the Strings together
            StringBuilder b = new StringBuilder();
            for (int runPos = found.getBeginRun(); runPos <= found.getEndRun(); runPos++) {
              XWPFRun run = runs.get(runPos);
              b.append(run.getText(run.getTextPosition()));
            }                       
            String connectedRuns = b.toString();
            String replaced = connectedRuns.replace(find, repl);

            // The first Run receives the replaced String of all connected Runs
            XWPFRun partOne = runs.get(found.getBeginRun());
            partOne.setText(replaced, 0);
            // Removing the text in the other Runs.
            for (int runPos = found.getBeginRun()+1; runPos <= found.getEndRun(); runPos++) {
              XWPFRun partNext = runs.get(runPos);
              partNext.setText("", 0);
            }                          
          }
        }
      }      
    }
    return count;
  }

Answer 2

你的逻辑不太正确。您需要先整理运行中的所有文本，然后再进行替换。如果在"test“上找到匹配项，您还需要删除该段落的所有游程，并添加新的单个游程。

试着这样做：

public class testPOI {

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

        String filepath = "F:\\MASTER_DOC.docx";
        String outpath = "F:\\Test.docx";

        XWPFDocument doc = new XWPFDocument(new FileInputStream(filepath));
        for (XWPFParagraph p : doc.getParagraphs()){

            int numberOfRuns = p.getRuns().size();

            // Collate text of all runs
            StringBuilder sb = new StringBuilder();
            for (XWPFRun r : p.getRuns()){
                int pos = r.getTextPosition();
                if(r.getText(pos) != null) {
                    sb.append(r.getText(pos));
                }
            }

            // Continue if there is text and contains "test"
            if(sb.length() > 0 && sb.toString().contains("test")) {
                // Remove all existing runs
                for(int i = 0; i < numberOfRuns; i++) {
                    p.removeRun(i);
                }
                String text = sb.toString().replace("test", "DOG");
                // Add new run with updated text
                XWPFRun run = p.createRun();
                run.setText(text);
                p.addRun(run);
            }
        }
       doc.write(new FileOutputStream(outpath));
    }
}

Answer 3

只需更改段落中每次运行的文本，然后保存文件。此代码适用于mi

XWPFDocument doc = new XWPFDocument(new FileInputStream(filepath));
for (XWPFParagraph p : doc.getParagraphs()) {
    StringBuilder sb = new StringBuilder();
    for (XWPFRun r : p.getRuns()) {
    String text = r.getText(0);
    if (text != null && text.contains("variable1")) {
        text = text.replace("variable1", "valeur1");
        r.setText(text, 0);
    }
    if (text != null && text.contains("variable2")) {
        text = text.replace("variable2", "valeur2");
        r.setText(text, 0);
    }
    if (text != null && text.contains("variable3")) {
        text = text.replace("variable3", "valeur3");
        r.setText(text, 0);
    }
    }

}

doc.write(new FileOutputStream(outpath));