How Do I Read Content from Multiple File Types Within a Zip Archive Using Apache Tika?

Reading Content from Files Within Zip Achieved with Apache Tika

Challenge:

You aspire to write a Java program that extracts and reads the content of multiple files within a zip archive using Apache Tika. Specifically, your zip file contains a mix of text, PDF, and docx files.

Solution:

public class ZipContentExtractor {

    public static void main(String[] args) throws IOException, SAXException, TikaException {
        File zipFile = new File("C:\Users\xxx\Desktop\abc.zip");

        try (ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(zipFile))) {
            ZipEntry entry;
            while ((entry = zipInputStream.getNextEntry()) != null) {
                // Checking file types
                if (entry.getName().endsWith(".txt") || entry.getName().endsWith(".pdf") || entry.getName().endsWith(".docx")) {
                    // Handling text files
                    if (entry.getName().endsWith(".txt")) {
                        BodyContentHandler textHandler = new BodyContentHandler();
                        Parser parser = new AutoDetectParser();
                        parser.parse(zipInputStream, textHandler, new Metadata(), new ParseContext());
                        System.out.println("TXT file content: " + textHandler.toString());
                    }
                    // Handling PDF files
                    else if (entry.getName().endsWith(".pdf")) {
                        Metadata metadata = new Metadata();
                        Parser parser = new PDFParser();
                        parser.parse(zipInputStream, new StreamingContentHandler(), metadata, new ParseContext());
                        System.out.println("PDF file content: " + metadata.get("xmpDM:documentID"));
                    }
                    // Handling DOCX files
                    else {
                        BodyContentHandler textHandler = new BodyContentHandler();
                        Parser parser = new OOXMLParser();
                        parser.parse(zipInputStream, textHandler, new Metadata(), new ParseContext());
                        System.out.println("DOCX file content: " + textHandler.toString());
                    }
                }
            }
        }
    }
}

Explanation:

• The code iterates through the entries in the zip file.
• For each entry, it checks the file type and handles it appropriately based on the file extension.
• For text files, Apache Tika's AutoDetectParser is used to parse the content into a String.
• For PDF files, the PDFParser is used to extract metadata, such as the document ID.
• For DOCX files, the OOXMLParser is used to parse the content into a String.

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