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Spring Framework 2.0.5 API 文档英文版
RemoteAccessException (Spring Framework API 2.0) - Spring Framework 2.0.5 API 文档英文版
org.springframework.remoting
Class RemoteAccessException
java.lang.Object
java.lang.Throwable
java.lang.Exception
java.lang.RuntimeException
org.springframework.core.NestedRuntimeException
org.springframework.remoting.RemoteAccessException
- All Implemented Interfaces:
- Serializable
- Direct Known Subclasses:
- RemoteConnectFailureException, RemoteLookupFailureException, RemoteProxyFailureException
public class RemoteAccessException
- extends NestedRuntimeException
Generic remote access exception. A service proxy for any remoting
protocol and toolkit should throw this exception or subclasses of it,
to be able to transparently expose a plain Java business interface.
When using conforming proxies, switching the actual remoting toolkit
e.g. from Hessian to Burlap does not affect client code. The latter
works with a plain Java business interface that the service exposes.
A client object simply receives an implementation for the interface that
it needs via a bean reference, like it does for local beans too.
A client can catch RemoteAccessException if it wants to, but as
remote access errors are typically unrecoverable, it will probably let
such exceptions propagate to a higher level that handles them generically.
In this case, the client code doesn't show any signs of being involved in
remote access, as there aren't any remoting-specific dependencies.
Even when switching from a remote service proxy to a local implementation
of the same interface, this amounts to just a matter of configuration.
Obviously, the client code should be somewhat aware that it _could work_
on a remote service, for example in terms of repeated method calls that
cause unnecessary roundtrips etc. But it doesn't have to be aware whether
it actually works on a remote service or a local implementation, or
with which remoting toolkit under the hood.
- Since:
- 14.05.2003
- Author:
- Juergen Hoeller
- See Also:
- Serialized Form
RemoteAccessException
public RemoteAccessException(String msg)
- Constructor for RemoteAccessException.
- Parameters:
msg - the detail message
RemoteAccessException
public RemoteAccessException(String msg,
Throwable cause)
- Constructor for RemoteAccessException.
- Parameters:
msg - the detail messagecause - the root cause (usually from using an underlying
remoting API such as RMI)
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