Exception————java.lang.IllegalStateException_java.lang.illegalstateexception: expected state [s-优快云博客

本文链接：https://blog.youkuaiyun.com/java_dotar_01/article/details/100114704

异常：

2013-1-15 15:27:34 org.apache.catalina.core.StandardContext reload

信息: Reloading this Context has started

2013-1-15 15:27:34 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc

严重: The web application [/MapServer] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.

2013-1-15 15:27:34 org.apache.catalina.loader.WebappClassLoader clearReferencesThreads

严重: The web application [/MapServer] appears to have started a thread named [Timer-2] but has failed to stop it. This is very likely to create a memory leak.

2013-1-15 15:27:34 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap

严重: The web application [/MapServer] created a ThreadLocal with key of type [org.apache.axis.utils.XMLUtils.ThreadLocalDocumentBuilder] (value [org.apache.axis.utils.XMLUtils$ThreadLocalDocumentBuilder@e9493a]) and a value of type [org.apache.xerces.jaxp.DocumentBuilderImpl] (value [org.apache.xerces.jaxp.DocumentBuilderImpl@1c6bbd3]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.

2013-1-15 15:27:34 org.apache.catalina.loader.WebappClassLoader clearThreadLocalMap

严重: The web application [/MapServer] created a ThreadLocal with key of type [org.apache.axis.utils.XMLUtils.ThreadLocalDocumentBuilder] (value [org.apache.axis.utils.XMLUtils$ThreadLocalDocumentBuilder@e9493a]) and a value of type [org.apache.xerces.jaxp.DocumentBuilderImpl] (value [org.apache.xerces.jaxp.DocumentBuilderImpl@554189]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.

2013-1-15 15:27:35 org.apache.catalina.loader.WebappClassLoader loadClass

信息: Illegal access: this web application instance has been stopped already. Could not load java.net.BindException. 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:1533)

at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1493)

at com.mysql.jdbc.SQLError.createLinkFailureMessageBasedOnHeuristics(SQLError.java:1276)

at com.mysql.jdbc.exceptions.jdbc4.CommunicationsException.<init>(CommunicationsException.java:58)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0( Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)

at java.lang.reflect.Constructor.newInstance(Unknown Source)

at com.mysql.jdbc.Util.handleNewInstance( Util.java:411)

at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)

at com.mysql.jdbc.MysqlIO.send( MysqlIO.java:3364)

at com.mysql.jdbc.MysqlIO.quit( MysqlIO.java:1708)

at com.mysql.jdbc.ConnectionImpl.realClose(ConnectionImpl.java:4371)

at com.mysql.jdbc.ConnectionImpl.cleanup( ConnectionImpl.java:1360)

at com.mysql.jdbc.ConnectionImpl.finalize(ConnectionImpl.java:2728)

at java.lang.ref.Finalizer.invokeFinalizeMethod( Native Method)

at java.lang.ref.Finalizer.runFinalizer(Unknown Source)

at java.lang.ref.Finalizer.access$100(Unknown Source)

at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

分析：

1. 在这新旧交替的时候，tomcat清掉旧的context，重建新的context，在旧的context中尚未来及终止的线程或者请求，必定会抛错。如果不想出这个错，可以禁用tomcat的自动reload，每次更新后，重启tomcat生效。

2. I found this explanation from web: It is possible that this is caused by Tomcat unsuccessfully reloading the web application. The app is unloaded, but all threads don't get shut down properly. As a result, when the threads try to run, they get clobbered by the fact that Tomcat has shut down its classloader, and an error is logged. The best fix is to turn off automatic webapp reloading for the application: in Tomcat's server.xml , find the <Context> declaration, and ensure it is set to: reloadable="false".

3. 在下面这段代码中

<Host name="localhost" appBase="webapps"

unpackWARs="true" autoDeploy="true"

xmlValidation="false" xmlNamespaceAware="false">

<!-- SingleSignOn valve, share authentication between web applications

Documentation at: /docs/config/valve.html -->

<!--

-->

<!-- Access log processes all example.

Documentation at: /docs/config/valve.html -->

<!--

<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"