java - java中XML解析器的绝对路径

Question

我有以下代码来打开 XML 文件进行解析。我的问题是变量 designPath:它目前必须是我的程序根目录的相对路径。但是，当我传递绝对路径时，它不起作用。

// Get the DOM Builder Factory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

// Get the DOM Builder
DocumentBuilder builder = factory.newDocumentBuilder();

// Load and Parse the XML document
// document contains the complete XML as a Tree
Document document = builder.parse(ClassLoader.getSystemResourceAsStream(designPath));

如何使用 designPath 变量中的绝对路径或相对路径来实现此操作？

问题出在函数 ClassLoader.getSystemResourceAsStream 上，该函数从用于加载类的搜索路径中获取“指定名称的资源”。根据Java文档，但我希望能够将它与绝对路径一起使用。

请注意，我的 designPath 可能与我的程序位于不同的驱动器上。

Answer 1

改为传入InputStream:

// Get the DOM Builder Factory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

// Get the DOM Builder
DocumentBuilder builder = factory.newDocumentBuilder();

// Load and Parse the XML document
// document contains the complete XML as a Tree
File file = new File(PATH_TO_FILE);
InputStream inputStream = new FileInputStream(file);

Document document = builder.parse(inputStream);

或者简单地传递一个新的File对象

// Get the DOM Builder Factory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

// Get the DOM Builder
DocumentBuilder builder = factory.newDocumentBuilder();

// Load and Parse the XML document
// document contains the complete XML as a Tree
Document document = builder.parse(new File(PATH_TO_FILE));