Apache PDFBox vs IronPDF：技術比較指南

// Apache PDFBox does not have official .NET port
// Community ports like PDFBox-dotnet are incomplete
// and do not support HTML到PDF conversion natively.
// You would need to use additional libraries like
// iText or combine with HTML renderers separately.

using PdfBoxDotNet.Pdmodel;
using System.IO;

// Note: This is NOT supported in PDFBox
// PDFBox is primarily for PDF manipulation, not HTML rendering
// You would need external HTML rendering engine

' Apache PDFBox does not have official .NET port
' Community ports like PDFBox-dotnet are incomplete
' and do not support HTML到PDF conversion natively.
' You would need to use additional libraries like
' iText or combine with HTML renderers separately.

Imports PdfBoxDotNet.Pdmodel
Imports System.IO

' Note: This is NOT supported in PDFBox
' PDFBox is primarily for PDF manipulation, not HTML rendering
' You would need external HTML rendering engine

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var renderer = new ChromePdfRenderer();
        var pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is HTML to PDF</p>");
        pdf.SaveAs("output.pdf");
        Console.WriteLine("PDF created successfully");
    }
}

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim renderer = New ChromePdfRenderer()
        Dim pdf = renderer.RenderHtmlAsPdf("<h1>Hello World</h1><p>This is HTML to PDF</p>")
        pdf.SaveAs("output.pdf")
        Console.WriteLine("PDF created successfully")
    End Sub
End Class

// Apache PDFBox .NET ports are experimental and incomplete
using PdfBoxDotNet.Pdmodel;
using PdfBoxDotNet.Text;
using System;
using System.IO;

class Program
{
    static void Main()
    {
        // Note: PDFBox-dotnet has limited functionality
        using (var document = PDDocument.Load("document.pdf"))
        {
            var stripper = new PDFTextStripper();
            string text = stripper.GetText(document);
            Console.WriteLine(text);
        }
    }
}

Imports PdfBoxDotNet.Pdmodel
Imports PdfBoxDotNet.Text
Imports System
Imports System.IO

Class Program
    Shared Sub Main()
        ' Note: PDFBox-dotnet has limited functionality
        Using document = PDDocument.Load("document.pdf")
            Dim stripper = New PDFTextStripper()
            Dim text As String = stripper.GetText(document)
            Console.WriteLine(text)
        End Using
    End Sub
End Class

// NuGet: Install-Package IronPdf
using IronPdf;
using System;

class Program
{
    static void Main()
    {
        var pdf = PdfDocument.FromFile("document.pdf");
        string text = pdf.ExtractAllText();
        Console.WriteLine(text);

        // Or extract text from specific pages
        string pageText = pdf.ExtractTextFromPage(0);
        Console.WriteLine(pageText);
    }
}

Imports IronPdf
Imports System

Class Program
    Shared Sub Main()
        Dim pdf = PdfDocument.FromFile("document.pdf")
        Dim text As String = pdf.ExtractAllText()
        Console.WriteLine(text)

        ' Or extract text from specific pages
        Dim pageText As String = pdf.ExtractTextFromPage(0)
        Console.WriteLine(pageText)
    End Sub
End Class

// Apache PDFBox .NET port attempt (incomplete support)
using PdfBoxDotNet.Pdmodel;
using PdfBoxDotNet.Multipdf;
using System;
using System.IO;

class Program
{
    static void Main()
    {
        // PDFBox-dotnet ports have incomplete API coverage
        var merger = new PDFMergerUtility();
        merger.AddSource("document1.pdf");
        merger.AddSource("document2.pdf");
        merger.SetDestinationFileName("merged.pdf");
        merger.MergeDocuments();
        Console.WriteLine("PDFs merged");
    }
}

Imports PdfBoxDotNet.Pdmodel
Imports PdfBoxDotNet.Multipdf
Imports System
Imports System.IO

Module Program
    Sub Main()
        ' PDFBox-dotnet ports have incomplete API coverage
        Dim merger As New PDFMergerUtility()
        merger.AddSource("document1.pdf")
        merger.AddSource("document2.pdf")
        merger.SetDestinationFileName("merged.pdf")
        merger.MergeDocuments()
        Console.WriteLine("PDFs merged")
    End Sub
End Module

// NuGet: Install-Package IronPdf
using IronPdf;
using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        var pdf1 = PdfDocument.FromFile("document1.pdf");
        var pdf2 = PdfDocument.FromFile("document2.pdf");
        var pdf3 = PdfDocument.FromFile("document3.pdf");

        var merged = PdfDocument.Merge(pdf1, pdf2, pdf3);
        merged.SaveAs("merged.pdf");
        Console.WriteLine("PDFs merged successfully");
    }
}

Imports IronPdf
Imports System
Imports System.Collections.Generic

Module Program
    Sub Main()
        Dim pdf1 = PdfDocument.FromFile("document1.pdf")
        Dim pdf2 = PdfDocument.FromFile("document2.pdf")
        Dim pdf3 = PdfDocument.FromFile("document3.pdf")

        Dim merged = PdfDocument.Merge(pdf1, pdf2, pdf3)
        merged.SaveAs("merged.pdf")
        Console.WriteLine("PDFs merged successfully")
    End Sub
End Module

// PDFBox: Manual page construction required
// No HTML rendering - must construct pages programmatically
// with coordinate positioning for each element

' PDFBox: Manual page construction required
' No HTML rendering - must construct pages programmatically
' with coordinate positioning for each element

// IronPDF: HTML rendering with Chromium engine
var renderer = new ChromePdfRenderer();
var pdf = renderer.RenderHtmlAsPdf("<h1>Title</h1><p>Content with CSS styling</p>");
pdf.SaveAs("output.pdf");

' IronPDF: HTML rendering with Chromium engine
Dim renderer As New ChromePdfRenderer()
Dim pdf = renderer.RenderHtmlAsPdf("<h1>Title</h1><p>Content with CSS styling</p>")
pdf.SaveAs("output.pdf")

// PDFBox: Java-style patterns
PDDocument document = PDDocument.load(new File(path));
PDFTextStripper stripper = new PDFTextStripper();
string text = stripper.getText(document);
document.close();  // Explicit close required

Imports System.IO
Imports org.apache.pdfbox.pdmodel
Imports org.apache.pdfbox.text

Dim document As PDDocument = PDDocument.load(New File(path))
Dim stripper As New PDFTextStripper()
Dim text As String = stripper.getText(document)
document.close() ' Explicit close required

// IronPDF: .NET-style patterns
using var pdf = PdfDocument.FromFile(path);
string text = pdf.ExtractAllText();
// Automatic disposal with 'using'

Imports IronPdf

Using pdf = PdfDocument.FromFile(path)
    Dim text As String = pdf.ExtractAllText()
End Using

// PDFBox: Manual close required
PDDocument document = null;
try
{
    document = PDDocument.load("input.pdf");
    // Operations
}
finally
{
    if (document != null)
        document.close();
}

Imports org.apache.pdfbox.pdmodel

' PDFBox: Manual close required
Dim document As PDDocument = Nothing
Try
    document = PDDocument.load("input.pdf")
    ' Operations
Finally
    If document IsNot Nothing Then
        document.close()
    End If
End Try

// IronPDF: Standard .NET disposal
using var pdf = PdfDocument.FromFile("input.pdf");
// Automatic cleanup when scope ends

Imports IronPdf

Using pdf = PdfDocument.FromFile("input.pdf")
    ' Automatic cleanup when scope ends
End Using