本文整理汇总了Java中org.apache.pdfbox.cos.COSDictionary.keySet方法的典型用法代码示例。如果您正苦于以下问题：Java COSDictionary.keySet方法的具体用法？Java COSDictionary.keySet怎么用？Java COSDictionary.keySet使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.pdfbox.cos.COSDictionary的用法示例。
在下文中一共展示了COSDictionary.keySet方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testRenderSdnList
import org.apache.pdfbox.cos.COSDictionary; //导入方法依赖的package包/类
/**
* <a href="http://stackoverflow.com/questions/42032729/render-type3-font-character-as-image-using-pdfbox">
* Render Type3 font character as image using PDFBox
* </a>
* <br/>
* <a href="https://drive.google.com/file/d/0B0f6X4SAMh2KRDJTbm4tb3E1a1U/view">
* 4700198773.pdf
* </a>
* from
* <a href="http://stackoverflow.com/questions/37754112/extract-text-with-custom-font-result-non-readble">
* extract text with custom font result non readble
* </a>
* <p>
* This test shows how one can render individual Type 3 font glyphs as bitmaps.
* Unfortunately PDFBox out-of-the-box does not provide a class to render contents
* of arbitrary XObjects, merely for rendering pages; thus, we simply create a page
* with the glyph in question and render that page.
* </p>
* <p>
* As the OP did not provide a sample PDF, we simply use one from another
* stackoverflow question. There obviously might remain issues with the
* OP's files.
* </p>
*/
@Test
public void testRenderSdnList() throws IOException
{
try ( InputStream resource = getClass().getResourceAsStream("sdnlist.pdf"))
{
PDDocument document = PDDocument.load(resource);
PDPage page = document.getPage(1);
PDResources pageResources = page.getResources();
COSName f1Name = COSName.getPDFName("R144");
PDType3Font fontF1 = (PDType3Font) pageResources.getFont(f1Name);
Map<String, Integer> f1NameToCode = fontF1.getEncoding().getNameToCodeMap();
COSDictionary charProcsDictionary = fontF1.getCharProcs();
for (COSName key : charProcsDictionary.keySet())
{
COSStream stream = (COSStream) charProcsDictionary.getDictionaryObject(key);
PDType3CharProc charProc = new PDType3CharProc(fontF1, stream);
PDRectangle bbox = charProc.getGlyphBBox();
if (bbox == null)
bbox = charProc.getBBox();
Integer code = f1NameToCode.get(key.getName());
if (code != null)
{
PDDocument charDocument = new PDDocument();
PDPage charPage = new PDPage(bbox);
charDocument.addPage(charPage);
charPage.setResources(pageResources);
PDPageContentStream charContentStream = new PDPageContentStream(charDocument, charPage);
charContentStream.beginText();
charContentStream.setFont(fontF1, bbox.getHeight());
charContentStream.getOutput().write(String.format("<%2X> Tj\n", code).getBytes());
charContentStream.endText();
charContentStream.close();
File result = new File(RESULT_FOLDER, String.format("sdnlist-%s-%s.png", key.getName(), code));
PDFRenderer renderer = new PDFRenderer(charDocument);
BufferedImage image = renderer.renderImageWithDPI(0, 96);
ImageIO.write(image, "PNG", result);
charDocument.save(new File(RESULT_FOLDER, String.format("sdnlist-%s-%s.pdf", key.getName(), code)));
charDocument.close();
}
}
}
}
示例2: testRender4700198773
import org.apache.pdfbox.cos.COSDictionary; //导入方法依赖的package包/类
/**
* <a href="http://stackoverflow.com/questions/42032729/render-type3-font-character-as-image-using-pdfbox">
* Render Type3 font character as image using PDFBox
* </a>
* <br/>
* <a href="https://drive.google.com/file/d/0B0f6X4SAMh2KRDJTbm4tb3E1a1U/view">
* 4700198773.pdf
* </a>
* from
* <a href="http://stackoverflow.com/questions/37754112/extract-text-with-custom-font-result-non-readble">
* extract text with custom font result non readble
* </a>
* <p>
* This test shows how one can render individual Type 3 font glyphs as bitmaps.
* Unfortunately PDFBox out-of-the-box does not provide a class to render contents
* of arbitrary XObjects, merely for rendering pages; thus, we simply create a page
* with the glyph in question and render that page.
* </p>
* <p>
* As the OP did not provide a sample PDF, we simply use one from another
* stackoverflow question. There obviously might remain issues with the
* OP's files.
* </p>
*/
@Test
public void testRender4700198773() throws IOException
{
try ( InputStream resource = getClass().getResourceAsStream("4700198773.pdf"))
{
PDDocument document = PDDocument.load(resource);
PDPage page = document.getPage(0);
PDResources pageResources = page.getResources();
COSName f1Name = COSName.getPDFName("F1");
PDType3Font fontF1 = (PDType3Font) pageResources.getFont(f1Name);
Map<String, Integer> f1NameToCode = fontF1.getEncoding().getNameToCodeMap();
COSDictionary charProcsDictionary = fontF1.getCharProcs();
for (COSName key : charProcsDictionary.keySet())
{
COSStream stream = (COSStream) charProcsDictionary.getDictionaryObject(key);
PDType3CharProc charProc = new PDType3CharProc(fontF1, stream);
PDRectangle bbox = charProc.getGlyphBBox();
if (bbox == null)
bbox = charProc.getBBox();
Integer code = f1NameToCode.get(key.getName());
if (code != null)
{
PDDocument charDocument = new PDDocument();
PDPage charPage = new PDPage(bbox);
charDocument.addPage(charPage);
charPage.setResources(pageResources);
PDPageContentStream charContentStream = new PDPageContentStream(charDocument, charPage);
charContentStream.beginText();
charContentStream.setFont(fontF1, bbox.getHeight());
charContentStream.getOutput().write(String.format("<%2X> Tj\n", code).getBytes());
charContentStream.endText();
charContentStream.close();
File result = new File(RESULT_FOLDER, String.format("4700198773-%s-%s.png", key.getName(), code));
PDFRenderer renderer = new PDFRenderer(charDocument);
BufferedImage image = renderer.renderImageWithDPI(0, 96);
ImageIO.write(image, "PNG", result);
charDocument.save(new File(RESULT_FOLDER, String.format("4700198773-%s-%s.pdf", key.getName(), code)));
charDocument.close();
}
}
}
}