java - MalformedURLException : no protocol with Xalan transformer

Question

我在 editing an XML file in a stream 上实现此问题的解决方案时遇到问题。我收到 MalFormedUrlException:无协议(protocol)。 XML 文件编码为 UTF-8，没有文档类型，但格式良好。我很困惑为什么会发生这种情况。

这是有问题的代码(byteArray 具有 xml，UpdatingXmlReader 是我的类):

    XMLReader reader =
        new UpdatingXmlReader(SAXParserFactory.newInstance().newSAXParser());
    Transformer xform = TransformerFactory.newInstance().newTransformer();

    InputSource inputSource = 
        new InputSource(new ByteArrayInputStream(byteArray));
    StreamResult streamResult = 
        new StreamResult(response.getOutputStream());

    SAXSource saxSource = new SAXSource(reader, inputSource);                       

    xform.transform(saxSource, streamResult);

在我的测试中它是如何调用的:

    File file = new File("c:/test.xml");
    InputStream input = new FileInputStream(file);
    byte[] b = IOUtils.toByteArray(input);
    // in production the byte array will come from the database
    service.method(b, httpServletResponse ,httpServletRequest)

这是堆栈跟踪:

javax.xml.transform.TransformerException: 
    java.net.MalformedURLException: no protocol: 
    at org.apache.xalan.transformer.TransformerIdentityImpl.transform(Unknown Source)
Caused by: java.net.MalformedURLException: no protocol: [B@22732273
    at java.net.URL.<init>(URL.java:579)
    at java.net.URL.<init>(URL.java:476)
    at java.net.URL.<init>(URL.java:425)
    at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
    at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)

Answer 1

尝试将“file://”附加到文件路径的开头。