Use dom4j to implement xml to map and xml to json string

        <!--dom4j-->
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>

        <!--fastjson Version1.2.78yesFastjsonLast support at releaseJava 1.7的Version-->
        <dependency>
            <groupId></groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.78</version>
        </dependency>

package ;
 
import ;
import org.;
import org.;
import org.;
import org.;
 
import ;
import ;
import ;
import ;
 
public class Test {
    public static void main(String[] args) throws Exception {
        String xml = "<sites><site><name>RUNOOB</name><url></url></site><site><name>Google</name><url></url></site><site><name>Facebook</name><url></url></site></sites>";
        Map<String, Object> map = xml2map(xml);
        String json = (map);
        (json);
    }
 
    /**
      * xml to map without attributes
      */
    public static Map<String, Object> xml2map(String xml) throws DocumentException {
        // xml must have a root node        xml = "<root>" + xml + "</root>";
        Document document = (xml);
        Element root = (); //Root node        Map<String, Object> map = xml2map(root);
        return map;
    }
 
    /**
      * xml to map without attributes
      * If it is a sibling element and the label of the sibling element is the same, then these siblings with the same name need to be merged into an array
      */
    private static Map<String, Object> xml2map(Element element) {
        Map<String, Object> map = new LinkedHashMap<>();
        List<Element> list = (); //Get all child nodes        if (() > 0) { //There are children            for (Element iter : list) { //Transfer all child nodes                List<Object> mapList;
                if (().size() > 0) { //Sub nodes and child nodes                    Map<String, Object> m = xml2map(iter); //Recursive call                    if ((()) != null) { //The tag name already exists, indicating that it is an array structure                        Object obj = (());
                        if (obj instanceof List) { //The value of the label is an array structure. Take out the array and add new elements.                            mapList = (List) obj; //Take out the old value                            (m); //Put new value                        } else {
                            mapList = new ArrayList<>();
                            (obj); //Put the old value                            (m); //Put new value                        }
                        ((), mapList);
                    } else {
                        ((), m);
                    }
                } else { //Child nodes have no children                    if ((()) != null) { //The tag name already exists, indicating that it is an array structure                        Object obj = (());
                        if (obj instanceof List) { //The value of the label is an array structure. Take out the array and add new elements.                            mapList = (List) obj; //Take out the old value                            (()); //Put new value                        } else {
                            mapList = new ArrayList<>();
                            (obj); //Put the old value                            (()); //Put new value                        }
                        ((), mapList);
                    } else {
                        ((), ());
                    }
                }
            }
        }
        return map;
    }
 
}

<sites>
    <site>
        <name>RUNOOB</name>
        <url></url>
    </site>
    <site>
        <name>Google</name>
        <url></url>
    </site>
    <site>
        <name>Facebook</name>
        <url></url>
    </site>
</sites>

{
	"sites": {
		"site": [
			{
				"name": "RUNOOB",
				"url": ""
			},
			{
				"name": "Google",
				"url": ""
			},
			{
				"name": "Facebook",
				"url": ""
			}
		]
	}
}