jpa getOne 异常 disable Serializat

2018-08-01 18:09:26.689 ERROR 9032 --- [apr-8080-exec-9] o.s.b.w.servlet.support.ErrorPageFilter  : Forwarding to error page from request [/user/query] due to exception [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) (through reference chain: com.kric.ball.entity.UserInfo_$$_jvst716_0["handler"])]

org.springframework.http.converter.HttpMessageConversionException: 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) (through reference chain: com.kric.ball.entity.UserInfo_$$_jvst716_0["handler"])

解决方法：
entity添加
@JsonIgnoreProperties(value={"hibernateLazyInitializer","handler","fieldHandler"})

@JsonIgnoreProperties(value={"hibernateLazyInitializer"}) （此时只是忽略hibernateLazyInitializer属性）要加载被lazy的，也就是many-to-one的one端的pojo上

这行代码的作用在于告诉你的jsonplug组件，在将你的代理对象转换为json对象时，忽略value对应的数组中的属性，即：

通过java的反射机制将pojo转换成json的，属性，(通过java的反射机制将pojo转换成json的，)

"hibernateLazyInitializer","handler","fieldHandler",（如果你想在转换的时候继续忽略其他属性，可以在数组中继续加入）