dom4j获取属性对应节点(xpath方式)

xml文件内容

<?xml version="1.0" encoding="UTF-8" ?>
<services>
    <service code="0401" serviceName="/post" method="POST">
        <paramMap>
            <param src="" dest=""/>
            <param src="" dest=""/>
            <param src="" dest=""/>
        </paramMap>
    </service>
</services>

pom.xml

<dependency>
    <groupId>dom4j</groupId>
    <artifactId>dom4j</artifactId>
    <version>1.6.1</version>
</dependency>
<dependency>
    <groupId>jaxen</groupId>
    <artifactId>jaxen</artifactId>
    <version>1.1.6</version>
</dependency>
<dependency>
    <groupId>saxpath</groupId>
    <artifactId>saxpath</artifactId>
    <version>1.0-FCS</version>
</dependency>

jaxen,saxpath必须包含,否则根据xpath查找节点无法执行出来

java代码

private Document document;
if(document == null ){
    SAXReader reader = new SAXReader();
    URL url = getClass().getClassLoader().getResource("vc-service-map.xml");
    logger.debug("url:"+url);
    document = reader.read(url);
}
String msgCode=messageRequest.getHead().get("msgCode").toString();
//Element rootNode = document.getRootElement();
Element service=(Element)document.selectSingleNode("/services/service[@code='"+msgCode+"']");