Question

需要将输出格式转换为UTF-8，因为输出不处理特殊字符任何人都知道如何做到这一点？

DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
URL u = new URL("http://www.aredacao.com.br/tv-saude");
Document doc = builder.parse(u.openStream());
NodeList nodes = doc.getElementsByTagName("item");`

Answer 1

问题是网站返回<?xml version='1.0' encoding='iso-8859-1'?>但它应该返回<?xml version='1.0' encoding='UTF-8'?>。

一种解决方案是自己翻译每个元素的文本：

static void readData()
throws IOException,
       ParserConfigurationException,
       SAXException {

    DocumentBuilder builder =
        DocumentBuilderFactory.newInstance().newDocumentBuilder();
    URL u = new URL("http://www.aredacao.com.br/tv-saude");
    Document doc = builder.parse(u.toString());
    NodeList nodes = doc.getElementsByTagName("item");
    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.item(i);
        Element el = (Element) node;

        String title =
            el.getElementsByTagName("title").item(0).getTextContent();
        title = treatCharsAsUtf8Bytes(title);

        String description =
            el.getElementsByTagName("description").item(0).getTextContent();
        description = treatCharsAsUtf8Bytes(description);

        System.out.println("title=" + title);
        System.out.println("description=" + description);
        System.out.println();
    }
}

private static String treatCharsAsUtf8Bytes(String s) {
    byte[] bytes = s.getBytes(StandardCharsets.ISO_8859_1);
    return new String(bytes, StandardCharsets.UTF_8);
}

另一种可能性是编写一个FilterInputStream的子类来替换错误的<?xml prolog编码，但这样做的工作要多得多，而且如果文档结构复杂，我只会考虑这样做有许多不同的元素，翻译每个元素都会很笨拙。

utf-8使用标准的openStream和DocumentBuilder

1 个答案: