请问这个错误什么意思？为什么会有这个错误呢？
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:1241)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1201)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at com.mysql.jdbc.CommunicationsException. <init> (CommunicationsException.java:155)
at com.mysql.jdbc.MysqlIO.send(MysqlIO.java:2723)
at com.mysql.jdbc.MysqlIO.quit(MysqlIO.java:1401)
at com.mysql.jdbc.Connection.realClose(Connection.java:4882)
at com.mysql.jdbc.Connection.cleanup(Connection.java:2062)
at com.mysql.jdbc.Connection.finalize(Connection.java:3369)
at java.lang.ref.Finalizer.invokeFinalizeMethod(Native Method)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:83)
at java.lang.ref.Finalizer.access$100(Finalizer.java:14)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:160)
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找错误，你最好是一步一步排除，或者你把代码发上来，大家参考一下就知道了
------解决方案--------------------
可能是数据库关了
------解决方案--------------------
可能数据库服务关了，以前我关了数据库的服务好象就是这样的，
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1.看看你尖括号是不是对应的。
2.看看 <%%> 之间的代码有无错误。比如类型转换。
3.看看javascript脚本中是不是有错。
------解决方案--------------------
应该是数据库连接关掉了
this web application instance has been stopped already.