如何在 Java 中將 TIFF 轉換為 PDF

輸入影像

步驟 1：向 Java 主檔案新增導入語句

首先，請在 Java 主文件中加入必要的導入語句，以便使用IronPDF進行 TIFF 到 PDF 的轉換：

import com.ironsoftware.ironpdf.*;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

import com.ironsoftware.ironpdf.*;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

步驟 2：將單一 TIFF 檔案轉換為 PDF 文件

若要使用幾行程式碼將單一 TIFF 影像轉換為 PDF 文件，請按照以下範例操作：

import com.ironsoftware.ironpdf.PdfDocument;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.ArrayList;

public class TiffToPdfConverter {
    public static void main(String[] args) {
        // List to hold paths of images
        List<Path> paths = new ArrayList<>();

        // Adding a single TIFF image to the list of paths
        paths.add(Paths.get("assets/file_example_TIFF_1MB.tiff"));

        // Convert the TIFF image to a PDF and save it
        PdfDocument.fromImage(paths).saveAs(Paths.get("example.pdf"));
    }
}

import com.ironsoftware.ironpdf.PdfDocument;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.ArrayList;

public class TiffToPdfConverter {
    public static void main(String[] args) {
        // List to hold paths of images
        List<Path> paths = new ArrayList<>();

        // Adding a single TIFF image to the list of paths
        paths.add(Paths.get("assets/file_example_TIFF_1MB.tiff"));

        // Convert the TIFF image to a PDF and save it
        PdfDocument.fromImage(paths).saveAs(Paths.get("example.pdf"));
    }
}

步驟 3：將多個 TIFF 檔案轉換為 PDF 文件

若要將多個 TIFF 影像轉換為單一 PDF 文檔，請使用下列程式碼：

import com.ironsoftware.ironpdf.PdfDocument;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

public class MultiTiffToPdfConverter {
    public static void main(String[] args) {
        // Directory containing the TIFF images
        Path imageDirectory = Paths.get("assets");
        List<Path> imageFiles = new ArrayList<>();

        // Load all TIFF images from the directory
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(imageDirectory, "*.{tiff}")) {
            for (Path entry : stream) {
                imageFiles.add(entry);
            }
            // Convert the TIFF images to a single PDF and save it
            PdfDocument.fromImage(imageFiles).saveAs(Paths.get("multiple_images.pdf"));
        } catch (IOException exception) {
            throw new RuntimeException(
                    String.format("Error converting images to PDF from directory: %s: %s",
                            imageDirectory,
                            exception.getMessage()),
                    exception);
        }
    }
}

import com.ironsoftware.ironpdf.PdfDocument;
import java.io.IOException;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.List;

public class MultiTiffToPdfConverter {
    public static void main(String[] args) {
        // Directory containing the TIFF images
        Path imageDirectory = Paths.get("assets");
        List<Path> imageFiles = new ArrayList<>();

        // Load all TIFF images from the directory
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(imageDirectory, "*.{tiff}")) {
            for (Path entry : stream) {
                imageFiles.add(entry);
            }
            // Convert the TIFF images to a single PDF and save it
            PdfDocument.fromImage(imageFiles).saveAs(Paths.get("multiple_images.pdf"));
        } catch (IOException exception) {
            throw new RuntimeException(
                    String.format("Error converting images to PDF from directory: %s: %s",
                            imageDirectory,
                            exception.getMessage()),
                    exception);
        }
    }
}