EntityNotFoundException (Java EE 5)

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javax.persistence Class EntityNotFoundException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.lang.RuntimeException
              javax.persistence.PersistenceException
                  javax.persistence.EntityNotFoundException

All Implemented Interfaces:: Serializable

public class EntityNotFoundException
extends PersistenceException

Extends: Throwable > Exception > RuntimeException > PersistenceException

当访问 getReference EntityManager.getReference(Class,Object) 获得的实体引用但实体不存在时，持久性提供者将抛出此异常。当调用 refresh EntityManager.refresh(Object) 但数据库中不存在该对象时，也会抛出此异常。当前事务（如果存在活动的事务）将标记为回滚。

since

Java Persistence 1.0

英文文档：

Thrown by the persistence provider when an entity reference obtained by EntityManager.getReference(Class,Object) is accessed but the entity does not exist. Also thrown when EntityManager.refresh(Object) is called and the object no longer exists in the database. The current transaction, if one is active, will be marked for rollback.

Since:: Java Persistence 1.0
See Also:: EntityManager.getReference(Class,Object), EntityManager.refresh(Object), Serialized Form

Constructor Summary
`EntityNotFoundException()` Constructs a new `EntityNotFoundException` exception with `null` as its detail message.
`EntityNotFoundException(String message)` Constructs a new `EntityNotFoundException` exception with the specified detail message.

Method Summary

Methods inherited from class java.lang.Throwable
`fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

public EntityNotFoundException()
构造详细消息为 `null` 的新 `EntityNotFoundException` 异常。

英文文档：
EntityNotFoundException

public EntityNotFoundException()

Constructs a new EntityNotFoundException exception with null as its detail message.

public EntityNotFoundException(String message)
构造带指定详细消息的新 `EntityNotFoundException` 异常。

message 详细消息。

英文文档：
EntityNotFoundException

public EntityNotFoundException(String message)

Constructs a new EntityNotFoundException exception with the specified detail message.

Parameters:: message - the detail message.