如何使 LogbackValve 异步支持？答案

【问题标题】：How to make LogbackValve async supported?如何使 LogbackValve 异步支持？
【发布时间】：2013-03-23 11:49:22
【问题描述】：

我在我的网络应用中使用 logback-access。

但是当我在 server.xml 中使用<Valve className="ch.qos.logback.access.tomcat.LogbackValve"/> 时，我使用 request.startAsync() 的 servlet 将失败。

java.lang.IllegalStateException: Not supported.
at org.apache.catalina.connector.Request.startAsync(Request.java:1664)
at org.apache.catalina.connector.Request.startAsync(Request.java:1657)
at org.apache.catalina.connector.RequestFacade.startAsync(RequestFacade.java:1023)
at com.nut.NutServlet.doPost(NutServlet.java:61)
at com.nut.NutServlet.doGet(NutServlet.java:51)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at ch.qos.logback.access.tomcat.LogbackValve.invoke(LogbackValve.java:172)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1770)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

这是因为 ch.qos.logback.access.tomcat.LogbackValve 不支持异步。那么我怎样才能让它异步支持呢？

【问题讨论】：

标签： logback servlet-3.0

【解决方案1】：

您只需要在server.xml 中配置阀门的位置设置asyncSupported="true" 属性。

<Valve className="ch.qos.logback.access.tomcat.LogbackValve" asyncSupported="true"/>

【讨论】：

这没有帮助。也许应该更改 logback 代码以支持这一点。