code: public static void styleRun(XWPFRun destRun, XWPFRun srcRun) {
          if (null == destRun || null == srcRun) return;
          CTR ctr = srcRun.getCTR();
          if (ctr.isSetRPr() && ctr.getRPr().isSetRStyle()){
              String val = ctr.getRPr().getRStyle().getVal();
              if (StringUtils.isNotBlank(val)) {
                  CTRPr pr = destRun.getCTR().isSetRPr() ? destRun.getCTR().getRPr() : destRun.getCTR().addNewRPr();
                  CTString rStyle = pr.isSetRStyle() ? pr.getRStyle() : pr.addNewRStyle();
                  rStyle.setVal(val);
              }
          }
          if (Boolean.TRUE.equals(srcRun.isBold())) destRun.setBold(srcRun.isBold());
          destRun.setColor(srcRun.getColor());
          // destRun.setCharacterSpacing(srcRun.getCharacterSpacing());
          if (StringUtils.isNotBlank(srcRun.getFontFamily())) destRun.setFontFamily(srcRun.getFontFamily());
          int fontSize = srcRun.getFontSize();
          if (-1 != fontSize) destRun.setFontSize(fontSize);
          if (Boolean.TRUE.equals(srcRun.isItalic())) destRun.setItalic(srcRun.isItalic());
          if (Boolean.TRUE.equals(srcRun.isStrikeThrough())) destRun.setStrikeThrough(srcRun.isStrikeThrough());
          destRun.setUnderline(srcRun.getUnderline());
      }
docs: 重复样式
  
  @param destRun 新建的run
  @param srcRun 原始run