java - Why are only some of my attributes shown in the response xml of jaxws? -

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i created jaxws webservice, returns of attributes of objects in response xml.

e.g. 

public class myobject {    private string attribute1;    private string attribute2;     //getter , setter }

but returned xml contains 

<soap:envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">    <soap:body>       <ns2:mynamespaceresponse xmlns:ns2="mynamespace">          <myobject>             <attribute1>stringcontent</attribute1>          </myobject>              ....

attributes null not shown in xml. in example, attribute 2 null, , therefore it's not shown.


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