如何使用 Apache POI 从 .docx 文件中检索水印文本？

Question

如何使用 Apache POI 从 .docx 文件中获取水印文本

在API文档中，我看到createWatermark(String text)但找不到getter水印。

private File file;

public MSDocParser(String filePath, DataSource dataSource) {
   super(dataSource);
   this.file = new File(filePath);
}

public void parse(RunnableTask task) throws ParserException {
   textExtractor = ExtractorFactory.createExtractor(file);
   if (textExtractor instanceof XWPFWordExtractor) {
        XWPFDocument d = (XWPFDocument) textExtractor.getDocument();
        XWPFHeaderFooterPolicy hf = d.getHeaderFooterPolicy();

        // I want to print the watermark text here. 
    }
}

Answer 1

这是从文档中获取文本水印的最简单方法。

public String getWaterMark(XWPFDocument document) {
    var sbWaterMark = new StringBuilder();
    try {
        XWPFHeader defaultHeader = document.getHeaderFooterPolicy().getDefaultHeader();
        var declareNameSpaces = "declare namespace v='urn:schemas-microsoft-com:vml';";
        final var xpathFilter = "*//v:shape/v:textpath/@string";
        // a “watermark” in Word is nothing more than a graphic anchored to the header.
        XmlObject[] xmlobjects = defaultHeader._getHdrFtr().selectPath(declareNameSpaces + xpathFilter);

        if(xmlobjects != null && xmlobjects.length  > 0) {
             for (var xmlobj: xmlobjects {
                 sbWaterMark.append(
                     xmlobj.getDomNode().getNodeValue()).append("\n");
             }
        }
        return sbWaterMark.toString();
    } catch (NullPointerException ex) {
        return sbWaterMark.toString();
    } catch (Exception ex) {
        logAggregator.error("Error while getting Watermark content from document: ", ex);
    }
}

如何使用 Apache POI 从 .docx 文件中检索水印文本？

How to retrieve watermark text from .docx file using Apache POI?

java

apache-poi