解析XML

方式一：

方式二：

方式三：

方式N：

好可爱的demo：

document.xml文件内容如下：
<?xml version="1.0" encoding="UTF-8"?>
    <node>
        <key1> value1</ key1>
        < key2> value 2</ key2>
        < key3> value 3</ key3>
    </node>

public class ParseXml {
    public static Map<String, String> parseFile(String filePath) {
        File file = new File(filePath);
        if (!file.exists()) {
            return null;
        }
        try {
            Map<String, String> map = new HashMap<String, String>();
            //解析方式不限 
            SAXReader reader = new SAXReader();
            Document document = reader.read(file);
            Node node = document.selectSingleNode("node/key1");
            map.put("key1", node.getText());
            node = document.selectSingleNode("node/key2");
            map.put("key2", node.getText());
            node = document.selectSingleNode("node/key3");
            map.put("key", node.getText());
            return map;
        } catch (Exception e) {
            System.err.println("解析文件异常");
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        Map<String, String> resultMap = parseFile("D:/document.xml");
    }
}