dom4j+xpath解析xml文件

最新推荐文章于 2024-10-02 16:19:48 发布

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最新推荐文章于 2024-10-02 16:19:48 发布

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文章标签： xml java

本文链接：https://blog.youkuaiyun.com/UID_UUID/article/details/125374446

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本文介绍如何使用Java解析XML字符串，通过XPath表达式获取指定节点值，并存储在Map中。重点在于`getValueByNode`方法的实现和异常处理。

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Map<String, Object> map = new HashMap<>();
        try {
            List<String> nodes = new ArrayList<>();
            nodes.add("ns2:stateDesc");
            nodes.add("ns2:state");
            map = getValueByNode(execute.body(), nodes, "utf-8");
            System.out.println(map);
        } catch (Exception e) {
            e.printStackTrace();
}



/**
     * 解析xml字符串
     */
    public Map<String, Object> getValueByNode(String xml, List<String> nodes, String charsetName) throws DocumentException, UnsupportedEncodingException {
        SAXReader saxReader = new SAXReader();
        Map<String, String> nameMap = new HashMap<>();
        nameMap.put("ns2", "http://vo.intf.all.smpin.tydic.com");
        saxReader.getDocumentFactory().setXPathNamespaceURIs(nameMap);
        Document document = saxReader.read(new ByteArrayInputStream(xml.getBytes(charsetName)));
        Map<String, Object> result = new HashMap();
        nodes.forEach(node -> {
            String xpath = "//" + node;
            Node singleNode = document.selectSingleNode(xpath);
            if(singleNode != null) {
                result.put(node, singleNode.getStringValue());
            }
        });
        return result;
    }