实体“ClassName”的给定名称是空的 [英] The given name of the entity "ClassName" is empty

问题描述

我在Eclipse（开普勒）中使用JPA，而我的实体豆会偶尔开始显示错误，尽管班上没有任何变化。

I am using JPA in Eclipse (Kepler) and my Entity Beans will occasionally start showing errors although nothing has changed in the class.

突然间，$ code> @Entity 注释突出显示为错误，相关的错误消息是：

Suddenly the @Entity annotation is highlighted as an error and the associated error message is:

给定的名称实体com.test.domain.Result为空。

The given name of the entity "com.test.domain.Result" is empty.

如果我特别添加了name属性（即 @Entity（name =somename）然后线的somename部分突出显示为错误。

If I specifically add the name attribute (i.e. @Entity(name="somename") then the "somename" part of the line is highlighted as an error.

清理项目，重新启动Eclipse不能解决这个问题，我可以将类复制到一个新项目中，而不是一段时间得到错误，但一旦出现（没有明显原因），我无法摆脱它。

Cleaning the project, restarting Eclipse does not fix this. I can copy the classes into a new project and not get the error for a while, but once it appears (with no apparent cause) I cannot get rid of it.

任何想法是什么导致的，我可以如何解决？

Any ideas what is causing it and how I can fix it please?

更新：

嗯，我可以在项目属性中找到一个特定的设施（或忽略！）（项目属性 - > JPA - >错误/警告 - >键入实体名称为空（列表中的第二个）。一切正常，如果我这样做，但我仍然想知道是什么导致错误在第一位。

Well, I can find in the project properties a facility to specifically set this error to warning (or ignore!) (Project Properties -> JPA -> Errors/Warnings -> Type "Entity Name is Empty" (2nd one down in the list). Everything works fine if I do this, however I am still wondering what is causing the error in the first place.

推荐答案

我可以在项目属性中找到一个专门将此错误设置为警告（或忽略！）的工具（项目属性 - > JPA - >错误/警告 - >键入实体名称为空（列表中第二名）

I can find in the project properties a facility to specifically set this error to warning (or ignore!) (Project Properties -> JPA -> Errors/Warnings -> Type "Entity Name is Empty" (2nd one down in the list.

稍后取消设置实际上并不会导致错误返回，我猜，日食与自己不一样。

Unsetting this later actually doesn't cause the error to return, I am guessing eclipse gets out of sync with itself.

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