Type definition error: [simple type, class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializ

在用springboot根据id获取一个对象时出现以下异常：

Type definition error: [simple type, class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) 

解决方法：

    在相应的实体类添加如下注解：       

@JsonIgnoreProperties({"hibernateLazyInitializer","handler"})