如果不同的节点出现在之间，则XML编组不起作用

Question

我有下面的 ejb-jar.xml 我试图将其映射到 POJO。它只映射一个 MDB 和一个 Session bean，尽管 xml 有很多。

ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="2.1"
    xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"> 
    <display-name>TradeEJBs</display-name>
    <enterprise-beans>
        <session>
            <description>Trade Session EJB manages all Trading services</description>
            <display-name>TradeEJB</display-name>
            <ejb-name>TradeEJB</ejb-name>
            <home>org.apache.geronimo.samples.daytrader.ejb.TradeHome</home>
            <remote>org.apache.geronimo.samples.daytrader.ejb.Trade</remote>
            <ejb-class>org.apache.geronimo.samples.daytrader.ejb.TradeBean</ejb-class>
            <session-type>Stateless</session-type>
        </session>
        <session>
            <description>Trade JDBC Session EJB manages all Trading services</description>
            <display-name>TradeJDBC</display-name>
            <ejb-name>TradeJDBC</ejb-name>
            <home>org.apache.geronimo.samples.daytrader.session.TradeJDBCHome</home>
            <remote>org.apache.geronimo.samples.daytrader.session.TradeJDBC</remote>
            <ejb-class>org.apache.geronimo.samples.daytrader.session.TradeJDBCBean</ejb-class>
            <session-type>Stateless</session-type>
        </session>
        <message-driven>
            <ejb-name>TradeStreamerMDB</ejb-name>
            <ejb-class>org.apache.geronimo.samples.daytrader.ejb.TradeStreamerMDB</ejb-class>
            <messaging-type>javax.jms.MessageListener</messaging-type>
            <transaction-type>Container</transaction-type>
            <message-destination-type>javax.jms.Topic</message-destination-type>
            <message-destination-link>TradeStreamerTopic</message-destination-link>
            </message-driven>
        <session>
            <display-name>KeySequenceEJB</display-name>
            <ejb-name>KeySequenceEJB</ejb-name>
            <local-home>org.apache.geronimo.samples.daytrader.ejb.LocalKeySequenceHome</local-home>
            <local>org.apache.geronimo.samples.daytrader.ejb.LocalKeySequence</local>
            <ejb-class>org.apache.geronimo.samples.daytrader.ejb.KeySequenceBean</ejb-class>
            <session-type>Stateless</session-type>
        </session>
        <message-driven>
            <display-name>TradeBrokerMDB</display-name>
            <ejb-name>TradeBrokerMDB</ejb-name>
            <ejb-class>org.apache.geronimo.samples.daytrader.ejb.TradeBrokerMDB</ejb-class>
            <messaging-type>javax.jms.MessageListener</messaging-type>
            <transaction-type>Container</transaction-type>
            <message-destination-type>javax.jms.Queue</message-destination-type>
            <message-destination-link>TradeBrokerQueue</message-destination-link>
        </message-driven>
    </enterprise-beans>
</ejb-jar>

测试器类：

（EjbJarType、MDBModule、SessionModule POJO 已就位并带有正确的 Xml 注释）

public class XmlMarshallingTester {

public static void main(String[] args) throws Exception {
    
    String configFilePath = "C:\\SampleProject\\ejb\\src\\main\\resources\\META-INF\\ejb-jar.xml";
    EjbJarType ejbJarBean = (EjbJarType) marshal(configFilePath.toString(), EjbJarType.class);
    Map<String, MDBModule> mdbModeulMap = EJBXMLBeanUtil.getMdbDetails(ejbJarBean);
    Map<String, SessionModule> sessionMap = EJBXMLBeanUtil.getSessionBeanData(ejbJarBean);
}


public static Object marshal(String filePath, Class<?> targetClass) throws JsonParseException, JsonMappingException,
IOException, InstantiationException, IllegalAccessException {
    FileInputStream fi = new FileInputStream(filePath);

    JacksonXmlModule module = new JacksonXmlModule();
    module.setDefaultUseWrapper(false);
    XmlMapper xmlMapper = new XmlMapper(module);

    Object obj = targetClass.newInstance();
    Object beans = xmlMapper.readValue(fi, obj.getClass());
    return beans;

}

}

但是，如果 xml文件包含按顺序分组的所有相同类型的节点（如下所示），它按预期映射所有 MDB 和会话 bean。

<enterprise-beans>
    <session>
       <!-- some data -->
    </session>
    <session>
       <!-- some data -->
    </session>
    <session>
        <!-- some data -->
    </session>
    <message-driven>
        <!-- some data -->
    </message-driven>
    <message-driven>
        <!-- some data -->
    </message-driven>
</enterprise-beans>

那么，我们是否可以遵循任何机制/方式按原样读取所有 XML 节点并映射到 POJO？指点表示赞赏！