read Xml file with JAXB

Question

I want to read a xml file (like below) but I get an Execption. Could you please help me how can I fix this problem?

Answer 1

When you describing an XML model, you need to begin with a root entity (in your case it's the element).

@XmlRootElement(name="config")
class Config implements Serializable {
   private Log log;
   private Env env;

   @XmlElement(name="log")
   public Log getLog() {
      return this.log;
   }

   @XmlElement(name="env")
   public Env getEnv() {
      return this.env;
   }

   // Setters are omitted
}

And then you parse the XML like the following:

JAXBContext jaxbContext = JAXBContext.newInstance(Config.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
Config config = (Config) jaxbUnmarshaller.unmarshal(file);
if (config != null && config.getLog() != null) {
   customer = config.getLog().getProperties();
}