在Java FileNotFoundException中编写XML

Question

我面临以下代码的问题

       try {
            DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder docBuilder = docFactory.newDocumentBuilder();

            //root elements
            Document doc = docBuilder.newDocument();

            Element rootElement = doc.createElement("subcompany");
            doc.appendChild(rootElement);

            //id elements
            Element id = doc.createElement("id");
            id.appendChild(doc.createTextNode(subCompanyId != null ? subCompanyId : " "));
            rootElement.appendChild(id);

            TransformerFactory transformerFactory = TransformerFactory.newInstance();
            Transformer transformer = transformerFactory.newTransformer();
            DOMSource source = new DOMSource(doc);

            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

            String xmlPath = "/project/MallDirectory/mall";

            //EDITED for File creation before writing.
            boolean isFileCreated = new File(xmlPath, "subcompany.xml").createNewFile();
            System.out.println(isFileCreated);                

            StreamResult result = new StreamResult(new File(xmlPath, "subcompany.xml"));

            transformer.transform(source, result);

        } catch (Exception ex) {
            ex.printStackTrace();
        }

运行后,我得到以下错误:

javax.xml.transform.TransformerException: java.io.FileNotFoundException: file:/project/MallDirectory/mall/subcompany.xml (No such file or directory)

它曾用于我的其他项目,但不是这一次.究竟出了什么问题？

编辑:

这是我想写的路径.文件已创建,但为空.

Answer 1

我设法解决了这个问题.

这是错误:

javax.xml.transform.TransformerException: java.io.FileNotFoundException: file:/project/MallDirectory/mall/subcompany.xml (No such file or directory)

我想也许变换器正在尝试将xml写入此路径'file:/project/MallDirectory/mall/subcompany.xml'.我不知道它是怎么发生的,因为我专门设置了文件路径'/project/MallDirectory/mall/subcompany.xml',并且没有以'file:/'作为前缀.

因此,我通过这样做设法修复它:

...

//ERROR CODE:
//StreamResult result = new StreamResult(new File(xmlPath, "subcompany.xml"));
//
StreamResult result = new StreamResult(new File(xmlPath, "subcompany.xml").getPath());
transformer.transform(source, result);

...