Extract PDF Form Data with GroupDocs.Parser in Java

このチュートリアルでは、GroupDocs.Parser for Java を使用して PDF ドキュメントから pdf フォーム データを抽出する方法 を学びます。PDF のフォーム フィールドを読み取ったり、PDF から画像を取得したり、PDF データ入力を自動化したりしたい場合でも、以下のステップバイステップ ガイドが効率的かつ確実に実装する方法を示します。

Quick Answers

  • What library extracts pdf form data? GroupDocs.Parser for Java
  • Can I read pdf form fields and images? Yes – both text fields and embedded images are supported
  • Do I need a license? A free trial works for evaluation; a commercial license is required for production
  • Which Java version is required? Java 8 or later
  • Is parallel processing possible? Yes, you can parse multiple PDFs concurrently for high‑throughput scenarios

What is extract pdf form data?

pdf フォーム データの抽出とは、PDF フォーム内のインタラクティブ フィールド（テキスト ボックス、チェック ボックス、ドロップダウンなど）に入力された値をプログラムで読み取ることを指します。これにより、静的な文書からデータベース、CRM システム、またはその他の下流プロセスへ手作業の転記なしでデータを移行できます。

Why use GroupDocs.Parser to extract pdf form data?

  • High accuracy: Handles complex layouts and preserves field names.
  • Broad format support: Works with PDFs, Word, Excel, and more.
  • Simple API: Minimal code required to get field values.
  • Performance‑focused: Supports streaming and selective parsing to keep memory usage low.

Prerequisites

  • Java Development Kit (JDK): Java 8 or later
  • Maven: For dependency management and building the project
  • Basic Java knowledge: Familiarity with classes, methods, and OOP concepts

Setting Up GroupDocs.Parser for Java

Integrate GroupDocs.Parser into your project using Maven or by downloading the library directly.

Maven Integration

Add the repository and dependency to your pom.xml file:

<repositories>
    <repository>
        <id>repository.groupdocs.com</id>
        <name>GroupDocs Repository</name>
        <url>https://releases.groupdocs.com/parser/java/</url>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>com.groupdocs</groupId>
        <artifactId>groupdocs-parser</artifactId>
        <version>25.5</version>
    </dependency>
</dependencies>

Direct Download

Alternatively, download the latest version from GroupDocs.Parser for Java releases.

License Acquisition

  • Free Trial: Obtain a temporary license to test GroupDocs.Parser features.
  • Purchase: Acquire a full license for commercial use.

Once the library is available, you can create a Parser instance to work with PDF forms:

import com.groupdocs.parser.Parser;

public class PdfFormExtractor {
    public static void main(String[] args) {
        try (Parser parser = new Parser("YOUR_DOCUMENT_DIRECTORY/SampleCarWashPdf.pdf")) {
            // Parse form fields from the document here...
        }
    }
}

How to extract pdf form data

Step 1: Parse the Form Fields

Start by creating a Parser object and calling parseForm() to retrieve the form structure:

import com.groupdocs.parser.Parser;
import com.groupdocs.parser.data.DocumentData;

public class ExtractDataFromPdfFormsFeature {
    public static void run() {
        String filePath = "YOUR_DOCUMENT_DIRECTORY/SampleCarWashPdf.pdf";

        try (Parser parser = new Parser(filePath)) {
            DocumentData data = parser.parseForm();
            
            if (data == null) {
                System.out.println("Form extraction isn't supported.");
                return;
            }
            // Continue to extract field values...
        }
    }
}

Step 2: Extract Field Values

Use the field name to pull the text content from each FieldData object. This method also shows how to read pdf form fields safely:

import com.groupdocs.parser.data.FieldData;
import com.groupdocs.parser.data.PageTextArea;

private static String getFieldText(DocumentData data, String fieldName) {
    FieldData fieldData = data.getFieldsByName(fieldName).get(0);
    
    return fieldData != null && fieldData.getPageArea() instanceof PageTextArea
            ? ((PageTextArea) fieldData.getPageArea()).getText()
            : null;
}

Step 3: Create a Record Object

Store the extracted values in a structured record so they can be persisted or sent to other systems:

static class PreliminaryRecord {
    public String Name;
    public String Model;
    public String Time;
    public String Description;
}

// Extracted values are then assigned to the record fields:
PreliminaryRecord rec = new PreliminaryRecord();
rec.Name = getFieldText(data, "Name");
rec.Model = getFieldText(data, "Model");
rec.Time = getFieldText(data, "Time");
rec.Description = getFieldText(data, "Description");

Create a Record Object to Store Extracted Data

A well‑defined object makes it easy to integrate the extracted information with databases, APIs, or CRM platforms.

Overview

Creating a structured object helps manage and integrate form data into larger systems.

Implementation Steps

  1. Initialize the Record Object: Set up an instance of PreliminaryRecord.
  2. Populate with Extracted Values: Use the helper method above to fill the object.
public class CreateRecordObjectFeature {
    public static void createAndPopulateRecord() {
        PreliminaryRecord rec = new PreliminaryRecord();
        
        // Simulated extracted values for demonstration:
        rec.Name = "John Doe";
        rec.Model = "Tesla Model S";
        rec.Time = "10:00 AM";
        rec.Description = "Routine service check";
        
        // Now, the record object 'rec' can be used further.
    }
}

Practical Applications

  • Automated Data Entry: Pull customer or order details from PDF forms directly into your backend.
  • Invoice Processing: Extract invoice numbers, dates, and totals to speed up reconciliation.
  • Survey Responses Analysis: Gather answers from PDF questionnaires for reporting.
  • Medical Records Management: Pull patient information for electronic health record (EHR) systems.
  • Integration with CRM Systems: Populate leads and contacts in real time from filled PDFs.

Performance Considerations

  • Memory Management: Use try‑with‑resources (as shown) to ensure Parser instances are closed promptly.
  • Selective Parsing: Only request the fields you need to reduce CPU overhead.
  • Thread Safety: When processing many PDFs, run each Parser instance on its own thread; the library is thread‑safe when used this way.

Frequently Asked Questions

Q: Can I extract images from pdf using GroupDocs.Parser?
A: Yes, GroupDocs.Parser supports image extraction alongside text fields.

Q: How do I handle encrypted PDFs?
A: Provide the password when constructing the Parser instance; the library will decrypt the document automatically.

Q: Which other file formats are supported besides PDF?
A: The API also parses Word documents, Excel spreadsheets, PowerPoint presentations, and many more.

Q: What is the best way to process large volumes of PDFs?
A: Combine parallel streams with a thread‑pool executor to parse multiple files concurrently while respecting memory limits.

Q: Is a commercial license required for production use?
A: Yes, a full license is needed for production deployments; a free trial is available for evaluation.

Conclusion

You now have a complete, production‑ready approach to extract pdf form data with GroupDocs.Parser in Java. By parsing form fields, creating structured record objects, and handling performance considerations, you can automate data entry, integrate with downstream systems, and unlock the hidden value inside your PDF forms. For deeper details, explore the official documentation.

Last Updated: 2026-01-01
Tested With: GroupDocs.Parser 25.5
Author: GroupDocs