Android + Apache POI-.doc到html

我需要在我的应用中将.doc文件转换为html。

尝试过此代码:

            InputStream inputStream = mainactivity.getcontentResolver().
                    openInputStream(Uri.parse(uri));

            HWPFDocumentCore wordDocument = WordToHtmlUtils.loadDoc(inputStream);

            WordToHtmlConverter wordToHtmlConverter = new WordToHtmlConverter(
                    DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument());
            wordToHtmlConverter.processDocument(wordDocument);
            Document htmlDocument = wordToHtmlConverter.getDocument();
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            DOMSource domSource = new DOMSource(htmlDocument);
            StreamResult streamResult = new StreamResult(out);

            TransformerFactory tf = TransformerFactory.newInstance();
            Transformer serializer = tf.newTransformer();
            serializer.setOutputProperty(OutputKeys.ENCODING,"UTF-8");
            serializer.setOutputProperty(OutputKeys.INDENT,"yes");
            serializer.setOutputProperty(OutputKeys.METHOD,"html");
            serializer.transform(domSource,streamResult);
            out.close();

            String result = new String(out.toByteArray());

并获得此异常:

W / System.err:java.lang.NullPointerException:尝试在null上调用接口方法'org.w3c.dom.Node org.w3c.dom.Node.removeChild(org.w3c.dom.Node)'对象引用

W / System.err:在org.apache.poi.hwpf.converter.AbstractWordUtils.compactChildNodesR(AbstractWordUtils.java:146) 在org.apache.poi.hwpf.converter.WordToHtmlUtils.compactSpans(WordToHtmlUtils.java:238) 在org.apache.poi.hwpf.converter.WordToHtmlConverter.processparagraph(WordToHtmlConverter.java:596) 在org.apache.poi.hwpf.converter.AbstractWordConverter.processparagraphes(AbstractWordConverter.java:1112) 在org.apache.poi.hwpf.converter.WordToHtmlConverter.processSingleSection(WordToHtmlConverter.java:617) 在org.apache.poi.hwpf.converter.AbstractWordConverter.processDocument(AbstractWordConverter.java:722)

此代码在纯Java上有效,但在Android中获取NullPointerException。 我究竟做错了什么? :(

dengym123 回答:Android + Apache POI-.doc到html

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