search
HomeJavajavaTutorialHow can I extract content from files within a zip archive using Apache Tika in Java?

How can I extract content from files within a zip archive using Apache Tika in Java?

Extracting Content from Files within a Zip Archive Using Apache Tika

Problem:

Develop a Java program that reads the contents of files stored within a zip archive utilizing Apache Tika. The zip archive contains various file formats (such as txt, pdf, and docx).

Solution:

To achieve the desired functionality, follow these steps:

  1. Parse the Zip Archive:

    • Utilize ZipInputStream to iterate through the entries in the zip archive.
    • Extract only the files of interest (e.g., txt, pdf, docx).
  2. Invoke Apache Tika:

    • Create an instance of a text handler (e.g., BodyContentHandler) for capturing the extracted content.
    • Instantiate a parser (e.g., AutoDetectParser) to identify the file type and apply the appropriate parsing method.
  3. Extract and Convert Content:

    • Parse each extracted file through the parser, extracting the content into the text handler.
    • Convert any binary or unsupported data into a String format.
  4. Consolidate Extracted Content:

    • Store the extracted content from all the files into a temporary list.
    • Combine the contents of the individual files into a single String for further processing or display.

Code Snippet (Modified):

<code class="java">import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.apache.tika.exception.TikaException;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.parser.AutoDetectParser;
import org.apache.tika.parser.BodyContentHandler;
import org.apache.tika.parser.ParseContext;
import org.apache.tika.parser.Parser;
import org.apache.tika.sax.BodyContentHandlerFactory;
import org.xml.sax.SAXException;

public class ImprovedZipExtractor {

    public static void main(String[] args) {
        List<string> tempString = new ArrayList();
        StringBuffer sbf = new StringBuffer();

        File file = new File("C:\Users\xxx\Desktop\abc.zip");
        InputStream input;

        try {
            input = new FileInputStream(file);
            ZipInputStream zip = new ZipInputStream(input);
            ZipEntry entry = zip.getNextEntry();

            Metadata metadata = new Metadata();
            Parser parser = new AutoDetectParser();

            while (entry != null) {
                if (entry.getName().endsWith(".txt") || entry.getName().endsWith(".pdf")
                        || entry.getName().endsWith(".docx")) {
                    System.out.println("entry=" + entry.getName() + " " + entry.getSize());
                    parser.parse(zip, new BodyContentHandlerFactory(BodyContentHandlerFactory.INCLUDE_ENTITY_ROOT,
                            false).getNewBodyContentHandler(), metadata, new ParseContext());
                    tempString.add(sbf.toString());
                }
                entry = zip.getNextEntry();
            }
            zip.close();
            input.close();

            for (String text : tempString) {
                System.out.println("Apache Tika - Converted input string : " + text);
                sbf.append(text);
                System.out.println("Final text from all the three files " + sbf.toString());
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (TikaException e) {
            e.printStackTrace();
        }
    }
}</string></code>

Note: It's important to modify the code to prevent the sbf being overwritten during each iteration and to clear it outside the loop to store the concated content from all files.

The above is the detailed content of How can I extract content from files within a zip archive using Apache Tika in Java?. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log?How does IntelliJ IDEA identify the port number of a Spring Boot project without outputting a log?Apr 19, 2025 pm 11:45 PM

Start Spring using IntelliJIDEAUltimate version...

How to elegantly obtain entity class variable names to build database query conditions?How to elegantly obtain entity class variable names to build database query conditions?Apr 19, 2025 pm 11:42 PM

When using MyBatis-Plus or other ORM frameworks for database operations, it is often necessary to construct query conditions based on the attribute name of the entity class. If you manually every time...

How to use the Redis cache solution to efficiently realize the requirements of product ranking list?How to use the Redis cache solution to efficiently realize the requirements of product ranking list?Apr 19, 2025 pm 11:36 PM

How does the Redis caching solution realize the requirements of product ranking list? During the development process, we often need to deal with the requirements of rankings, such as displaying a...

How to safely convert Java objects to arrays?How to safely convert Java objects to arrays?Apr 19, 2025 pm 11:33 PM

Conversion of Java Objects and Arrays: In-depth discussion of the risks and correct methods of cast type conversion Many Java beginners will encounter the conversion of an object into an array...

How do I convert names to numbers to implement sorting and maintain consistency in groups?How do I convert names to numbers to implement sorting and maintain consistency in groups?Apr 19, 2025 pm 11:30 PM

Solutions to convert names to numbers to implement sorting In many application scenarios, users may need to sort in groups, especially in one...

E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products?E-commerce platform SKU and SPU database design: How to take into account both user-defined attributes and attributeless products?Apr 19, 2025 pm 11:27 PM

Detailed explanation of the design of SKU and SPU tables on e-commerce platforms This article will discuss the database design issues of SKU and SPU in e-commerce platforms, especially how to deal with user-defined sales...

How to set the default run configuration list of SpringBoot projects in Idea for team members to share?How to set the default run configuration list of SpringBoot projects in Idea for team members to share?Apr 19, 2025 pm 11:24 PM

How to set the SpringBoot project default run configuration list in Idea using IntelliJ...

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.