需要捕获并显示堆栈溢出错误消息

Question

我从数据库中获取了大约17,500条记录，并在结果集执行步骤中完全降低了堆栈溢出错误。

Query query = dbConnect
                .createQuery("select nitem from NItem nitem where nitem.id in ("+nitemIdStr+")");
        nitemList = query.getResultList();

堆栈溢出错误

Root cause:

java.lang.StackOverflowError
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:98)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)
 at org.apache.openjpa.jdbc.kernel.exps.OrExpression.acceptVisit(OrExpression.java:99)


 Complete stack:

 org.apache.wicket.WicketRuntimeException: Method onRequest of interface org.apache.wicket.behavior.IBehaviorListener targeted at com.rambutan.test.ExportNew$3@17adeb on component [Form [Component id = ajaxexample]] threw an exception

at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:268)
 at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241)
 at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:247)
 at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:226)
 at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:854)
 at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
 at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:254)
 at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:211)
 at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:282)
 at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)

java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
 at java.lang.reflect.Method.invoke(Unknown Source)
 at org.apache.wicket.RequestListenerInterface.internalInvoke(RequestListenerInterface.java:258)
 at org.apache.wicket.RequestListenerInterface.invoke(RequestListenerInterface.java:241)
 at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.invokeListener(ListenerInterfaceRequestHandler.java:247)
 at org.apache.wicket.core.request.handler.ListenerInterfaceRequestHandler.respond(ListenerInterfaceRequestHandler.java:226)
 at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:854)
 at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
 at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:254)
 at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:211)
 at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:282)
 at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:259)

我需要捕获此错误并在UI中显示一条消息，说明＆＃34;文件导出超出堆栈限制，请使用过滤条件＆＃34;而不是在浏览器中进入堆栈溢出错误。这有可能吗？

Answer 1

以下示例在测试页面上为我工作：

getRequestCycleListeners().add(new AbstractRequestCycleListener() {
        @Override
        public IRequestHandler onException(RequestCycle cycle, Exception e) {
            return new RenderPageRequestHandler(new PageProvider(SomePage.class));
        }
    });

在Application中添加此内容，如果SomePage.class发生异常，它会重定向您。

但是抓住堆栈溢出是不好的做法。有许多方法可以防止这种情况，例如限制查询，限制输入大小，跟踪已处理的记录或跟踪实际堆栈并自行完成。

所以我的建议是防止堆栈溢出而不是在wicket中捕获它。

Answer 2

作为一般规则，捕捉错误是一个坏主意，因为它们通常意味着某些东西处于严重不一致的状态。

捕获国有企业尤其成问题，因为无法保证您能够对其采取行动。虽然在您的特定情况下，当您捕获它以允许进一步调用时，堆栈可能已经足够空，但是您可能会触发另一个SOE。

顺便说一下，你绝对不能这样做：

Query query = dbConnect
            .createQuery("select nitem from NItem nitem where nitem.id in ("+nitemIdStr+")");

说真的，不要。