前一小段時間,發現Apache的一個開源工具,可以把PDF轉成圖片,沒有直接從HTML轉圖片的jar包,就隻能曲線救國瞭。
忘瞭介紹瞭。PDF轉圖片的包叫做apache pdfBox 右邊是:pdfbox的官網 pdfBox官網
下面直接貼代碼瞭:
[java]
public void convertToTiff(String pdfFilePath, String tiffFileName)
throws Exception {
PDDocument doc = PDDocument.load(pdfFilePath);
int pageCount = doc.getPageCount();
List pages = doc.getDocumentCatalog().getAllPages();
List<File> files = new ArrayList<File>();
List<File> deleteFiles = new ArrayList<File>();
for(int i=0;i<pages.size();i++){
PDPage page = (PDPage)pages.get(i);
BufferedImage image = page.convertToImage(BufferedImage.TYPE_BYTE_BINARY, 300);
Iterator iter = ImageIO.getImageWritersBySuffix("jpg");
ImageWriter writer = (ImageWriter)iter.next();
File outFile = new File("C:/1"+i+".jpg");
FileOutputStream out = new FileOutputStream(outFile);
ImageOutputStream outImage = ImageIO.createImageOutputStream(out);
writer.setOutput(outImage);
writer.write(new IIOImage(image,null,null));
this.jpg2tif("C:/1"+i+".jpg", "C:/1"+i+".tif");
files.add(new File("C:/1"+i+".tif"));
deleteFiles.add(outFile);
deleteFiles.add(new File("C:/1"+i+".tif"));
outImage.close();
out.close();
writer.dispose();
}
if(files != null){
this.tif2Marge(files, "C:/1.tif");
}
}
[java]
/**
* 將jpg格式轉化為tif格式。
* @param srcFile 需要裝換的源文件
* @param descFile 裝換後的轉存文件
* @throws Exception
*/
public void jpg2tif(String srcFile, String descFile) throws Exception {
RenderedOp src = JAI.create("fileload", srcFile);
OutputStream os = new FileOutputStream(descFile);
TIFFEncodeParam param = new TIFFEncodeParam();
param.setCompression(TIFFEncodeParam.COMPRESSION_JPEG_TTN2);
ImageEncoder encoder = ImageCodec.createImageEncoder("TIFF", os, param);
encoder.encode(src);
os.close();
}
/**
* 將若幹tif文件合同為一個tif文件
* @param srcFile
* @param descFile
* @throws Exception
*/
public void tif2Marge(List<File> srcFile, String descFile) throws Exception {
List pages = new ArrayList(srcFile.size() – 1);
for (int i = 0; i < srcFile.size(); i++) {
RenderedOp firstpage = JAI.create("fileload", srcFile.get(0).getCanonicalPath());
if(i != 0 ){
RenderedOp page = JAI.create("fileload", srcFile.get(i).getCanonicalPath());
pages.add(page);
} www.aiwalls.com
OutputStream os = new FileOutputStream(descFile);
TIFFEncodeParam param = new TIFFEncodeParam();
param.setCompression(TIFFEncodeParam.COMPRESSION_JPEG_TTN2);
param.setExtraImages(pages.iterator());
ImageEncoder encoder = ImageCodec.createImageEncoder("TIFF", os, param);
encoder.encode(firstpage);
firstpage.dispose();
for (int j = 1; j < pages.size(); j++) {
((RenderedOp) pages.get(j)).dispose();
}
os.close();
pages.clear();
}
}
作者:JasonChris