为附件添加描述 - PDFBOX答案

【问题标题】：add description to attachment - PDFBOX为附件添加描述 - PDFBOX
【发布时间】：2013-08-09 12:23:51
【问题描述】：

我这样添加附件：

PDEmbeddedFilesNameTreeNode efTree = new PDEmbeddedFilesNameTreeNode();

//first create the file specification, which holds the embedded file
PDComplexFileSpecification fs = new PDComplexFileSpecification();
fs.setFile( "Test.txt" );
InputStream is = ...;
PDEmbeddedFile ef = new PDEmbeddedFile(doc, is );
//set some of the attributes of the embedded file
ef.setSubtype( "test/plain" );
ef.setSize( data.length );
ef.setCreationDate( new GregorianCalendar() );
fs.setEmbeddedFile( ef );

//now add the entry to the embedded file tree and set in the document.
Map efMap = new HashMap();
efMap.put( "My first attachment", fs );
efTree.setNames( efMap );
//attachments are stored as part of the "names" dictionary in the document catalog
PDDocumentNameDictionary names = new PDDocumentNameDictionary( doc.getDocumentCatalog() );
names.setEmbeddedFiles( efTree );
doc.getDocumentCatalog().setNames( names );

一切正常！但是如何添加描述？没有办法解决这个问题

我看过源代码： code

获取 PDStream。并设置名称，例如...

【问题讨论】：

标签： apache adobe pdfbox

【解决方案1】：

solution. I just see with PDF Explorer the structure, where it was done, and then:

fs.getCOSDictionary().setString("Desc", "your describtion");

【讨论】：

【解决方案2】：

另一种可能性（使用 PDFBox v2）是：

    //first create the file specification, which holds the embedded file
    PDComplexFileSpecification fs = new PDComplexFileSpecification();
    fs.setFile( "Test.txt" );
    fs.setFileDescription( "my description" );

【讨论】：