如何在java中显示iText Image对象

我正在用 java创建一个PDF阅读器.为了阅读PDF文件我正在使用iText库.我有一个示例代码来读取PDF文件,但我不知道如何在JFrame中显示iText Image对象.Below是读取PDF文件的代码.

import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;

public class ReadAndUsePdf {
private static String INPUTFILE = "c:/temp/FirstPdf.pdf";
private static String OUTPUTFILE = "c:/temp/ReadPdf.pdf";

public static void main(String[] args) throws DocumentException,IOException {
    Document document = new Document();

    PdfWriter writer = PdfWriter.getInstance(document,new FileOutputStream(OUTPUTFILE));
    document.open();
    PdfReader reader = new PdfReader(INPUTFILE);
    int n = reader.getNumberOfPages();
    PdfImportedPage page;
    // Go through all pages
    for (int i = 1; i <= n; i++) {
        // Only page number 2 will be included
        if (i == 2) {
            page = writer.getImportedPage(reader,i);
            Image instance = Image.getInstance(page); //how to show this object in a JFrame
            document.add(instance);
        }
    }
    document.close();

}

}

解决方法

我有完全相同的问题,我通过使用 ICEPdf在Swing中渲染PDF,并通过iText来操作它来解决它.

可能重复：Can I use iText to render PDF in my Swing application?