java - Web 实例已经停止

Question

我收到这个错误

Mar 22, 2011 12:36:01 AM org.apache.catalina.loader.WebappClassLoader findResourceInternal
INFO: Illegal access: this web application instance has been stopped already.  Could not load META-INF/services/javax.xml.parsers.DocumentBuilderFactory.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
Mar 22, 2011 12:36:01 AM org.apache.catalina.loader.WebappClassLoader loadClass
INFO: Illegal access: this web application instance has been stopped already.  Could not load com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl.  The eventual following stack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
java.lang.IllegalStateException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1562)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
    at javax.xml.parsers.FactoryFinder.getProviderClass(Unknown Source)
    at javax.xml.parsers.FactoryFinder.newInstance(Unknown Source)
    at javax.xml.parsers.FactoryFinder.find(Unknown Source)
    at javax.xml.parsers.DocumentBuilderFactory.newInstance(Unknown Source)
    at com.xmlparser.XmlParser.parseXmlFile(XmlParser.java:33)
    at com.xmlparser.XmlParser.<init>(XmlParser.java:25)
    at com.jobs.SendRoutineMessagesJob.execute(SendRoutineMessagesJob.java:29)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:546)

有人可以指导我我在这里犯了什么错误吗？我不确定是否还需要粘贴源代码。

Answer 1

这是因为您正在将应用程序的新实例部署到服务器，但先前实例的某些线程或连接尝试执行您编写的某些业务逻辑。这就是为什么 JVM 的主要部分称为 ClassLoader 会通知您“非法访问:此 Web 应用程序实例已经停止”并抛出适当的异常......您可以关闭应用程序服务器的自动部署功能，这在生产环境和之后更可取手动部署应用程序重启服务器。或者您可以在类级别控制 Servlet 生命周期 :))) 在“预部署”期间关闭所有连接或停止某些线程。或者使用复杂的方式通过 ManagedExecutorService 控制线程。祝你好运!!!