使用Apache Tika从存档中提取文件名

Question

我希望 Tika 仅输出存档中文件的名称（如果输入文件是存档）和文件内容，如果输入文件不是存档，则照常输出文件内容。我该怎么做？

Answer 1

我扩展了 ParsingEmbeddedDocumentExtractor 类

class CustomParsingEmbeddedDocumentExtractor extends ParsingEmbeddedDocumentExtractor {
  public CustomParsingEmbeddedDocumentExtractor(ParseContext context) {
    super(context);
  }
  public void parseEmbedded(
        InputStream stream, ContentHandler handler, Metadata metadata, boolean outputHtml)
        throws SAXException, IOException {

    String name = metadata.get(Metadata.RESOURCE_NAME_KEY);
    if (name != null && name.length() > 0 ) {
        handler.startElement(XHTML, "h1", "h1", new AttributesImpl());
        char[] chars = name.toCharArray();
        handler.characters(chars, 0, chars.length);
        handler.endElement(XHTML, "h1", "h1");
    }
    //Removed the parsing logic here.. We just want the file names..
  }
}

并在执行someparser.parse()之前将其设置为 ParseContext 变量

context.set(EmbeddedDocumentExtractor.class, new CustomParsingEmbeddedDocumentExtractor(this.context));

这仅适用于拉链、焦油和罐子。这对我来说已经足够了。