如何使用Java解析大型XML文件? [英] How do I parse a large XML file using Java?

问题描述

我正在尝试使用Java解析XML文件.

I am trying to parse an XML file using Java.

XML文件大小仅为256 kb.我正在使用DOM解析器来解析XML文件.如何解析大型XML文件内容?

The XML file size is 256 kb only. I am using a DOM parser to parse the XML file. How can I parse the large XML file content?

以下是解析文件内容的方法:

Here's the method that parses the file content:

public Document parse_a_string(StringBuffer decodedFile) {
    Document doc1 = null;
    try {
        DocumentBuilderFactory factory =
                DocumentBuilderFactory.newInstance();
        DocumentBuilder db = factory.newDocumentBuilder();
        InputSource inStream = new InputSource();

         // problem here
        inStream.setCharacterStream(new StringReader(decodedFile.toString()));

        doc1 = db.parse(inStream);
    } catch (Exception e) {
    }
    return doc1;
}

文件内容位于 StringBuffer 参考对象 decodedFile 中，但是当我将其设置为 StringReader 时，它仅接受字符串.

The file content is in the StringBuffer reference object, decodedFile, but when I set it to StringReader it accept only string.

推荐答案

对于大型文档(尽管我不会称呼您很大)，我会使用

For large documents (though I wouldn't call your's large) I'd use StAX.

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