处理Spring Web Flow中的异常

时间:2014-06-09 08:58:29

标签: spring spring-webflow

Hello Friends Iam试图处理

org.springframework.webflow.execution.repository.snapshot.SnapshotNotFoundException

这个例外,但我没有这样做。 通过这种方式我处理SnapshotNotFoundException。

<transition on-exception="org.springframework.webflow.execution.repository.snapshot.SnapshotNotFoundException"
        to="exceptionHandler" />

1 个答案:

答案 0 :(得分:4)

声明性异常处理似乎不适用于内部Web Flow异常。对于这种特殊情况,我们必须实施自定义FlowHandlerhandleException()

类似的东西:

public class CustomFlowHandler extends AbstractFlowHandler
{
    @Override
    public String handleException(FlowException e, HttpServletRequest request,
            HttpServletResponse response)
    {
        if (e instanceof FlowExecutionRestorationFailureException)
        {
            if (e.getCause() instanceof SnapshotNotFoundException)
            {
                // TODO return the desired location string. See javadoc for options
                return "serverRelative:/missingSnapshot.html";
            }
        }
        return super.handleException(e, request, response);
    }
}

在Spring配置文件中:

<!-- custom flow handler -->
<bean name="your-flow-name" class="yourpackage.CustomFlowHandler"/>