哦,我玩得多么开心!我有一个复杂、复杂和疯狂的解决方案,我知道@JasonPlutext 将提供一个我忽略的非常简单和明显的解决方案。
这里是。此代码将 word 文档生成到输出流:
outputStream = response.getOutputStream();
XHTMLImporter.setHyperlinkStyle("Hyperlink");
// Create an empty docx package
WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.createPackage();
NumberingDefinitionsPart ndp = new NumberingDefinitionsPart();
wordMLPackage.getMainDocumentPart().addTargetPart(ndp);
ndp.unmarshalDefaultNumbering();
// Convert the XHTML, and add it into the empty docx we made
List<Object> wmlObjects = getWmlObjects(wordMLPackage, xhtmlDocumentAsString);
wordMLPackage.getMainDocumentPart().getContent().addAll(wmlObjects);
SaveToZipFile saver = new SaveToZipFile(wordMLPackage);
saver.save(outputStream);
这个方法getWmlObjects
是我自己的,它模拟了这个XHTMLImporter.convert
方法,但它本身做的一切都是经过大量反思的。它基本上注入了几个对象来覆盖默认值Docx4jUserAgent
和Docx4jReplacedElementFactory
对象DocxRenderer
(这是 Importer 实例的一个字段)。见下文:
private List<Object> getWmlObjects(WordprocessingMLPackage wordMLPackage, String xhtmlDocumentAsString) {
try {
DocxRenderer renderer = new DocxRenderer();
// override the user agent
FieldAccessUtils.setField(renderer, "userAgent", new ProfileImageDocx4jUserAgent());
// override the replaced element factory
Docx4jDocxOutputDevice outputDevice = (Docx4jDocxOutputDevice) FieldAccessUtils.getField(renderer,
"_outputDevice");
renderer.getSharedContext().setReplacedElementFactory(
new ProfileImageDocx4jReplacedElementFactory(outputDevice));
// build the XHTMLImporter instance as it does in XHTMLImporter.convert but with our new renderer
XHTMLImporter importer; // = new XHTMLImporter(wordMLPackage);
Constructor<XHTMLImporter> constructor = XHTMLImporter.class
.getDeclaredConstructor(WordprocessingMLPackage.class);
constructor.setAccessible(true);
importer = constructor.newInstance(wordMLPackage);
constructor.setAccessible(false);
FieldAccessUtils.setField(importer, "renderer", renderer);
InputSource is = new InputSource(new BufferedReader(new StringReader(xhtmlDocumentAsString)));
Document dom = XMLResource.load(is).getDocument();
renderer.setDocument(dom, null);
renderer.layout();
// use reflection to do: importer.traverse(renderer.getRootBox(), FieldAccessUtils.getField(importer, "imports"), null);
Method traverseMethod = importer.getClass().getDeclaredMethod("traverse", Box.class, List.class,
TableProperties.class);
traverseMethod.setAccessible(true);
traverseMethod.invoke(importer, renderer.getRootBox(), FieldAccessUtils.getField(importer, "imports"), null);
traverseMethod.setAccessible(false);
return (List<Object>) FieldAccessUtils.getField(importer, "imports");
} catch (SecurityException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (NoSuchMethodException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (IllegalArgumentException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (IllegalAccessException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (InvocationTargetException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (InstantiationException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
}
try {
// plan B
return XHTMLImporter.convert(xhtmlDocumentAsString, null, wordMLPackage);
} catch (Docx4JException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
}
return null;
}
然后我只有我的两个自定义类 ProfileImageDocx4jUserAgent (驴工作):
public class ProfileImageDocx4jUserAgent extends Docx4jUserAgent {
/**
* Replace the image where the DisplayUserPic servlet is being called.
* <p>
* From overridden method javadoc:
* <p>
* {@inheritDoc}
*/
@Override
public Docx4JFSImage getDocx4JImageResource(String uri) {
if (StringUtils.contains(uri, "DisplayUserPic")) {
InputStream input = null;
try {
input = ...;
byte[] bytes = IOUtils.toByteArray(input);
return new Docx4JFSImage(bytes);
} catch (IOException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} catch (ServiceException e) {
getLogger().error(ExceptionUtils.getStackTrace(e));
} finally {
IOUtils.closeQuietly(input);
}
return super.getDocx4JImageResource(uri);
} else {
return super.getDocx4JImageResource(uri);
}
}
}
和 ProfileImageDocx4jReplacedElementFactory (此时获取 iText 内容以忽略图像......否则会记录错误但它仍然可以正常工作):
public class ProfileImageDocx4jReplacedElementFactory extends Docx4jReplacedElementFactory {
/**
* Constructor.
*
* @param outputDevice
* the output device
*/
public ProfileImageDocx4jReplacedElementFactory(Docx4jDocxOutputDevice outputDevice) {
super(outputDevice);
}
/**
* Forces any images which use the DisplayUserPic servlet to be ignored.
* <p>
* From overridden method javadoc:
* <p>
* {@inheritDoc}
*/
@Override
public ReplacedElement createReplacedElement(LayoutContext layoutContext, BlockBox blockBox,
UserAgentCallback userAgentCallback, int cssWidth, int cssHeight) {
Element element = blockBox.getElement();
if (element == null) {
return null;
}
String nodeName = element.getNodeName();
String src = element.getAttribute("src");
if ("img".equals(nodeName) && src.contains("DisplayUserPic")) {
return null;
}
// default behaviour
return super.createReplacedElement(layoutContext, blockBox, userAgentCallback, cssWidth, cssHeight);
}
}
我猜 docx4j 家伙可能会在 docx4j 中构建一些东西来处理这种情况,但目前(我认为)这似乎是一个很好的解决方法