springbt_security_jwt调用注册方法时jpa返回user数据序列化的时候提示空指针异常

[trymorewang]

异常信息如下

Resolved [org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: (was java.lang.NullPointerException); nested exception is com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: cn.codesheep.springbt_security_jwt.model.entity.User["authorities"])]

我自建一个模块不使用springbt security测试注册方法就是正常 望羊哥有空帮忙看看 谢谢