SEVERE:映射异常到响应:500(内部服务器错误)javax.ws.rs。WebApplicationException:javax.xml.bind.MarshalException

I'm trying to develop an application with jersey, spring and hibernate. I hope that someone can help me to resolve this problem. I get this exception when I try to extract an Object from my database and transform it to xml element.I'm trying to develop an application with jerse