相关疑难解决方法(0)

我有一个每5秒钟发出一次AJAX请求.但问题是在AJAX请求之前,如果先前的请求没有完成,我将中止该请求并发出新请求.

我的代码是这样的,如何解决这个问题？

$(document).ready(
    var fn = function(){
        $.ajax({
            url: 'ajax/progress.ftl',
            success: function(data) {
                //do something
            }
        });
    };

    var interval = setInterval(fn, 500);
);

我在我的Web应用程序中使用Jersey 2.13来检索数据异步.在某些情况下,请求需要一些时间(执行复杂报告时),直到他们的响应返回到客户端.

当客户端不等待异步响应(离开页面,关闭浏览器等)时,将抛出ClientAbortException.此行为与预期的一样,但它会使我的日志文件充满堆栈跟踪,因为在响应返回之前取消的每个异步请求都会打印堆栈跟踪.

堆栈跟踪如下所示:

Oct 15, 2014 2:25:23 PM org.glassfish.jersey.server.ServerRuntime$Responder writeResponse
SEVERE: An I/O error has occurred while writing a response message entity to the container output stream.
org.glassfish.jersey.server.internal.process.MappableException: ClientAbortException:  java.io.IOException
                at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:91)
                at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
                at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1154)
                at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:621)
                at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:377)
                at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:367)
                at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:274)
                at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
                at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
                at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
                at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
                at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
                at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:297)
                at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:254)
                at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1030)
                at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
                at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:381)
                at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:344)
                at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:221)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
                at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
                at …