你自己覆盖那个类 实现自己的逻辑

写个aop 捕获下异常 然后根据异常类型做跳转

public class MessageExecutorInterceptor implements MethodInterceptor {

	private static final Log log = Logs.get();
	public void filter(InterceptorChain chain) throws Throwable {
		Stopwatch sw = Stopwatch.begin();
		try {
			chain.doChain();
		} catch (ReloadException e) {
			/** 数据库执行异常会提示用户重新登陆 */
			chain.setReturnValue(new View()...);
		} finally {
			sw.stop();
			if (log.isDebugEnabled()) {
				log.debugf("%sms", sw.getDuration());
			}
		}
	}
}