Apache POI字表单元格未更新颜色（XWPFTableCell）

Question

String rgb = "FF0000";

for(XWPFTable table : moddedFile.getTables()) {
    for (XWPFTableRow row : table.getRows()) {
        for (XWPFTableCell cell : row.getTableCells()) {
            for (XWPFParagraph paragraph : cell.getParagraphs()) {
                if (paragraph == p) {
                    System.out.println(cell.getText());
                    System.out.println(cell.getColor());
                    cell.setColor(rgb);
                    System.out.println(cell.getColor());
                }
            }
        }
    }
}

Answer 1

也许单元格的灰色背景是使用主题填充和主题填充阴影设置的。主题填充设置和显式填充设置都可以设置。但是主题填充设置是有特权的。因此，如果主题填充设置存在，那么显式填充设置将被忽略。

SetColor（String rgbStr）只设置显式填充设置，但不考虑主题填充设置。应该像这样打补丁：

public void setColor(String rgbStr) {
    CTTcPr tcpr = getTcPr();
    CTShd ctshd = tcpr.isSetShd() ? tcpr.getShd() : tcpr.addNewShd();
    ctshd.setColor("auto");
    ctshd.setVal(STShd.CLEAR);
    ctshd.setFill(rgbStr);

    if (ctshd.isSetThemeFill()) ctshd.unsetThemeFill();
    if (ctshd.isSetThemeFillShade()) ctshd.unsetThemeFillShade();
    if (ctshd.isSetThemeFillTint()) ctshd.unsetThemeFillTint();
}

无需修补，可以使用自己的setcolor方法：

import java.io.FileOutputStream;
import java.io.FileInputStream;

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

public class WordChangeTableCellColor{

 static void setColor(XWPFTableCell cell, String rgbStr) {
  CTTc ctTc = cell.getCTTc();
  CTTcPr tcpr = ctTc.isSetTcPr() ? ctTc.getTcPr() : ctTc.addNewTcPr();
  CTShd ctshd = tcpr.isSetShd() ? tcpr.getShd() : tcpr.addNewShd();
  ctshd.setColor("auto");
  ctshd.setVal(STShd.CLEAR);
  ctshd.setFill(rgbStr);

  if (ctshd.isSetThemeFill()) ctshd.unsetThemeFill();
  if (ctshd.isSetThemeFillShade()) ctshd.unsetThemeFillShade();
  if (ctshd.isSetThemeFillTint()) ctshd.unsetThemeFillTint();
 }

 public static void main(String[] args) throws Exception {
  XWPFDocument moddedFile = new XWPFDocument(new FileInputStream("./WordDocument.docx"));

  //Not clear where the XWPFParagraph p comes from in question's code.
  //But if WordDocument.docx contains at least one table having at least one row having at least three cells, then this should work.
  XWPFParagraph p = null;
  try {
   p = moddedFile.getTables().get(0).getRows().get(0).getTableCells().get(2).getParagraphs().get(0);
  } catch (Exception ex) {
   ex.printStackTrace();
  }

  String rgb = "FF0000";

  for(XWPFTable table : moddedFile.getTables()) {
   for (XWPFTableRow row : table.getRows()) {
    for (XWPFTableCell cell : row.getTableCells()) {
     for (XWPFParagraph paragraph : cell.getParagraphs()) {
      if (paragraph == p) {
       System.out.println(cell.getText());
       System.out.println(cell.getColor());
       //cell.setColor(rgb);
       setColor(cell, rgb);
       System.out.println(cell.getColor());
      }
     }
    }
   }
  }

  FileOutputStream out = new FileOutputStream("./WordDocumentNew.docx");
  moddedFile.write(out);
  out.close();
  moddedFile.close();
 }
}