U ovom vodiču ćemo naučiti kako čitati PDF datoteku u C++. Možete izdvojiti tekst ili slike s bilo koje stranice ili cijelog dokumenta PDF datoteke jednostavnim API pozivima u C++. Značajka ne ovisi o Adobe Acrobatu ili bilo kojoj aplikaciji za čitanje PDF-a na Windows ili Linux platformama.
Koraci za čitanje PDF datoteke u C++
- Instalirajte Aspose.Pdf for C++ iz NuGet alata za upravljanje paketima
- Dodajte referencu na imenski prostor Aspose::Pdf
- Učitaj ulazni PDF koristeći Document Class
- Inicijalizirajte instancu klase TextFragmentAbsorber
- Ispišite izdvojeni tekst na konzoli
- Iterirajte kroz svaku stranicu i sliku dokumenta
- Spremite izdvojenu izlaznu sliku kao JPG datoteku
Možete otvoriti i čitati pdf datoteku u C++ s nekoliko jednostavnih redaka koda. Može učinkovito izdvojiti sav tekst i slike iz PDF datoteke.
Kod za čitanje PDF datoteke u C++
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| #pragma once | |
| #include <iostream> | |
| #include <system/smart_ptr.h> | |
| #include <Aspose.PDF.Cpp/License.h> | |
| #include <Aspose.PDF.Cpp/Document.h> | |
| #include <Aspose.PDF.Cpp/Page.h> | |
| #include <Aspose.PDF.Cpp/PageCollection.h> | |
| #include <Aspose.PDF.Cpp/Resources.h> | |
| #include <Aspose.PDF.Cpp/XImageCollection.h> | |
| #include <Aspose.PDF.Cpp/XImage.h> | |
| #include <Aspose.PDF.Cpp/Text/TextFragmentAbsorber.h> | |
| #include <system/console.h> | |
| #include <system/io/file.h> | |
| #include <drawing/imaging/image_format.h> | |
| using namespace System; | |
| using namespace Aspose::Pdf; | |
| class ReadPDFEx { | |
| public: | |
| static void ReadPDF() | |
| { | |
| // Set the license for Aspose.PDF for CPP to Read PDF file | |
| SharedPtr<License> ReadPdfLicense = System::MakeObject<License>(); | |
| ReadPdfLicense->SetLicense(u"Aspose.PDF.NET.lic"); | |
| // Load input PDF file with Document class object | |
| SharedPtr<Document> doc = MakeObject<Document>(u"Test.pdf"); | |
| // Initialize a TextFragmentAbsorber class instance | |
| SharedPtr<Aspose::Pdf::Text::TextFragmentAbsorber> absorber = MakeObject<Aspose::Pdf::Text::TextFragmentAbsorber>(); | |
| doc->get_Pages()->Accept(absorber); | |
| // Print the extracted text on console | |
| System::Console::WriteLine(absorber->get_Text()); | |
| // Set the image counter variable | |
| int ImageCount = 1; | |
| // Iterate through each page of the PDF document | |
| for (SharedPtr<Page> page : doc->get_Pages()) | |
| { | |
| // Iterate through all the images | |
| for (SharedPtr<XImage> image : page->get_Resources()->get_Images()) | |
| { | |
| // Initialize an object of the FileStream type | |
| System::SharedPtr<System::IO::FileStream> outputImage = | |
| System::IO::File::Create(String::Format(u"Image{0}.jpg", ImageCount)); | |
| // Save the output image | |
| image->Save(outputImage, System::Drawing::Imaging::ImageFormat::get_Jpeg()); | |
| // Close the FileStream | |
| outputImage->Close(); | |
| ImageCount++; | |
| } | |
| } | |
| } | |
| }; |
U prethodnoj smo temi istražili Kako spljoštiti polja PDF obrasca u C#. Ova se tema usredotočuje na to kako čitati tekst iz PDF datoteke u C++.
