由于* .css和imageFiles对于所有XHTML文件都是相同的,所以我不需要在处理文件时解决它们.
我成功使用以下代码缓存图像.如何缓存.css文件呢？我想避免将所有文件放入我的类路径中.

ITextRenderer renderer = new ITextRenderer();
 
ResourceLoaderUserAgent callback = new ResourceLoaderUserAgent(renderer.getOutputDevice());
callback.setSharedContext(renderer.getSharedContext());
 
for (MyObject myObject : myObjectList) {
 
    OutputStream os = new FileOutputStream(tempFile);
 
    final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
    documentBuilderFactory.setValidating(false);
    DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
    org.w3c.dom.Document document = builder.parse(myObject.getLocalPath); // full path to .xhtml
 
    renderer.getSharedContext().setUserAgentCallback(callback);
 
    renderer.setDocument(document,myObject.getUri());
    renderer.layout();
    renderer.createPDF(os);
 
    os.flush();
    os.close();
}
    ...
 
 
private static class ResourceLoaderUserAgent extends ITextUserAgent
{
    public ResourceLoaderUserAgent(ITextOutputDevice outputDevice) {
        super(outputDevice);
    }
 
    protected InputStream resolveAndOpenStream(String uri) {
        InputStream is = super.resolveAndOpenStream(uri);
        System.out.println("IN resolveAndOpenStream() " + uri);
 
        return is;
    }
}