Java 读取 XML 文件内容

末蓝、 2022-08-09 02:27 190阅读 0赞

*  **`XML`文件内容**
    
        <?xml version="1.0" encoding="UTF-8"?>
        <ip_type>
            <ip name="办公网">192.168.75.167</ip>
            <ip name="研发网">192.168.102.168</ip>
        </ip_type>
 *  **`Java`读取`XML`示例代码**
    
        import java.io.File;
        import java.util.HashMap;
        import java.util.Iterator;
        import java.util.List;
        import java.util.Map;
        
        import org.dom4j.Document;
        import org.dom4j.DocumentException;
        import org.dom4j.Element;
        import org.dom4j.io.SAXReader;
        
        public class NetworkUtil {    
            public static Map<String, String> network_map = new HashMap<String, String>();
                
            private NetworkUtil() {
                //读取XML文件,获得document对象
                SAXReader reader = new SAXReader();
                Document document = null;
                try {
                    document = reader.read(new File("./network.xml"));
                } catch (DocumentException e) {
                    e.printStackTrace();
                }
        
                Element node = document.getRootElement();//获取根节点
                List node1 = node.elements("ip");//获取根节点下所有元素名为“ip”的元素
                Map<String, String> map = new HashMap<String, String>();//汉字作为key，ip地址作为value
        
                for (Iterator it = node1.iterator(); it.hasNext();) {
                    Element elm = (Element) it.next();
                    map.put(elm.attributeValue("name"), elm.getText());
                }
                network_map = map;
            }
        
            private static final NetworkUtil networkUtil = new NetworkUtil(); 
                
            public static NetworkUtil getInstance(){        
                return networkUtil;
            }
        }