jaxb xml to object template 的两种形式

<?xml version="1.0" encoding="UTF-8"?>
<root>

<template
   start="true"
   ip="127.0.0.1"
   port="3344"
   server="server"
/>
<template>
<start>true</start>
<ip>11.11.11.11</ip>
<port>1111</port>
<server>server</server>
</template>


</root>



上面的template可以读取到，
下面的带子节点的怎么读取啊？

JAXBContext jaxbContext = JAXBContext.newInstance(Root.class);
Unmarshaller um = jaxbContext.createUnmarshaller();
StreamSource streamSource = new StreamSource(new StringReader(buffer.toString()));
root = (Root) um.unmarshal(streamSource);