java 解析xml报文(字符串)「建议收藏」

大家好，又见面了，我是你们的朋友全栈君。

一：maven：

        <!--解析xml报文-->
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>1.6.1</version>
        </dependency>

二：工具类：

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

/**
 * @description 解析xml字符串
 */
public class Test {
    public static void readStringXml(String xml) {
        Document doc = null;
        try {
            doc = DocumentHelper.parseText(xml); // 将字符串转为XML
            Element rootElt = doc.getRootElement(); // 获取根节点
            System.out.println("根节点：" + rootElt.getName()); // 拿到根节点的名称
            Iterator iter = rootElt.elementIterator("head"); // 获取根节点下的子节点head
            // 遍历head节点
            while (iter.hasNext()) {
                Element recordEle = (Element) iter.next();
                String title = recordEle.elementTextTrim("title"); // 拿到head节点下的子节点title值
                System.out.println("title:" + title);
                Iterator iters = recordEle.elementIterator("script"); // 获取子节点head下的子节点script
                // 遍历Header节点下的Response节点
                while (iters.hasNext()) {
                    Element itemEle = (Element) iters.next();
                    String username = itemEle.elementTextTrim("username"); // 拿到head下的子节点script下的字节点username的值
                    String password = itemEle.elementTextTrim("password");
                    System.out.println("username:" + username);
                    System.out.println("password:" + password);
                }
            }
            Iterator iterss = rootElt.elementIterator("body"); ///获取根节点下的子节点body
            // 遍历body节点
            while (iterss.hasNext()) {
                Element recordEless = (Element) iterss.next();
                String result = recordEless.elementTextTrim("result"); // 拿到body节点下的子节点result值
                System.out.println("result:" + result);
                Iterator itersElIterator = recordEless.elementIterator("form"); // 获取子节点body下的子节点form
                // 遍历Header节点下的Response节点
                while (itersElIterator.hasNext()) {
                    Element itemEle = (Element) itersElIterator.next();
                    String banlce = itemEle.elementTextTrim("banlce"); // 拿到body下的子节点form下的字节点banlce的值
                    String subID = itemEle.elementTextTrim("subID");
                    System.out.println("banlce:" + banlce);
                    System.out.println("subID:" + subID);
                }
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

三：测试

    public static void main(String[] args) {
        String xmlString = "<html>"
                + "<head>"
                + "     <title>dom4j解析一个例子</title>"
                + "     <script>"
                + "         <username>yangrong</username>"
                + "         <password>123456</password>"
                + "     </script>"
                + "</head>"
                + "<body>"
                + "     <result>0</result>"
                + "     <form>"
                + "         <banlce>1000</banlce>"
                + "         <subID>36242519880716</subID>"
                + "     </form>"
                + "     <form>"
                + "         <banlce>200</banlce>"
                + "         <subID>222222222222</subID>"
                + "     </form>"
                + "</body>"
                + "</html>";
        readStringXml(xmlString);
    }

控制台：

ps:更换xml的报文需要更改工具类的节点名称