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我需要将多个pdf文件合并为一个PDF文件并将其显示在我的网络浏览器中。 我知道如何显示一个文件:spring-mvc:合并pdf文件并将它们显示在网络浏览器中
File file = new File(activite.getLienUploadUn());
FileInputStream inputStream = new FileInputStream(file);
byte[] buffer = new byte[8192];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) != -1)
{
baos.write(buffer, 0, bytesRead);
}
response.setHeader("Content-Disposition","inline; filename=\""+file.getName()+"\"");
response.setContentType("application/pdf");
ServletOutputStream outputStream = response.getOutputStream();
baos.writeTo(outputStream);
outputStream.flush();
我想我会用PDFBOX及其PDFMergerUtility类合并文件:
PDFMergerUtility mergePdf = new PDFMergerUtility();
mergePdf.addSource(file);
mergePdf.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());
但是,从那里,我怎么可以转换的合并文档进一个byteArrayOutputStream?