PHPRPC For JAVA 问题

我用phprpc for java 返回对象，实现了Serializable接口，可以查询该条数据，可是返回值都是null，请教大家

{"CGLIB$BOUND":true,"CGLIB$CONSTRUCTED":true,"CGLIB$CALLBACK_0":null,
"CGLIB$CALLBACK_1":null,"id":null,"area":null,"address":null,"name":null,
"summary":null,"engagedDayCount":0,"searchSummary":null,"registerDate":null,
"telephone":null,"timeLimit":null,"minimal":{"intVal":null,"scale":0},
"admin":null,"rooms":null,"dishes":null}