eclipse上启动的tomcat无法热部署？
求大神分析分析
tomcat版本：apache-tomcat-6.0.35
我怀疑多半是工程的问题，可是我找不出原因，以前我做的web项目，都支持热部署的，java类修改后，会自动生效，不用重启服务器，很方便。可是最近这个项目，随便修改一点java代码，比如就是在方法里加一个空白行，tomcat都会自动重启，最恶心的是，重启还总是报错，停在WebappClassLoader.loaderClass，还找不到源文件，最后报以下错误：
2013-2-20 10:44:29 org.apache.catalina.loader.WebappClassLoader loadClass
信息: Illegal access: this web application instance has been stopped already. Could not load org.apache.mina.util.SessionLog. 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:1566)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextExceptionCaught(AbstractIoFilterChain.java:348)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1000(AbstractIoFilterChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.exceptionCaught(AbstractIoFilterChain.java:643)
at org.apache.mina.common.IoFilterAdapter.exceptionCaught(IoFilterAdapter.java:75)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextExceptionCaught(AbstractIoFilterChain.java:345)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1000(AbstractIoFilterChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.exceptionCaught(AbstractIoFilterChain.java:643)
at org.apache.mina.common.support.AbstractIoFilterChain$HeadFilter.exceptionCaught(AbstractIoFilterChain.java:494)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextExceptionCaught(AbstractIoFilterChain.java:345)
at org.apache.mina.common.support.AbstractIoFilterChain.fireExceptionCaught(AbstractIoFilterChain.java:334)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextSessionIdle(AbstractIoFilterChain.java:287)
at org.apache.mina.common.support.AbstractIoFilterChain.access$900(AbstractIoFilterChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.sessionIdle(AbstractIoFilterChain.java:638)
at org.apache.mina.common.IoFilterAdapter.sessionIdle(IoFilterAdapter.java:70)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextSessionIdle(AbstractIoFilterChain.java:284)
at org.apache.mina.common.support.AbstractIoFilterChain.access$900(AbstractIoFilterChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.sessionIdle(AbstractIoFilterChain.java:638)
at org.apache.mina.common.support.AbstractIoFilterChain$HeadFilter.sessionIdle(AbstractIoFilterChain.java:489)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextSessionIdle(AbstractIoFilterChain.java:284)
at org.apache.mina.common.support.AbstractIoFilterChain.fireSessionIdle(AbstractIoFilterChain.java:278)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.notifyIdleness0(SocketIoProcessor.java:289)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.notifyIdleness(SocketIoProcessor.java:271)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.notifyIdleness(SocketIoProcessor.java:260)
at org.apache.mina.transport.socket.nio.SocketIoProcessor.access$700(SocketIoProcessor.java:45)
at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(SocketIoProcessor.java:490)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
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)
2013-2-20 10:44:29 org.apache.catalina.loader.WebappClassLoader loadClass
信息: Illegal access: this web application instance has been stopped already. Could not load org.apache.mina.common.ExceptionMonitor. 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:1566)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(SocketIoProcessor.java:512)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Exception in thread "ConfigClientWorker-Default" java.lang.NoClassDefFoundError: org/apache/log4j/spi/VectorWriter
at org.apache.log4j.spi.LoggingEvent.<init>(LoggingEvent.java:154)
at org.apache.log4j.Category.forcedLog(Category.java:388)
at org.apache.log4j.Category.error(Category.java:319)
at com.taobao.config.client.ConfigClientWorker$WorkerThread.run(ConfigClientWorker.java:268)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.spi.VectorWriter
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
... 4 more
Exception in thread "LOGSTAT-WRITE" java.lang.NullPointerException
at com.taobao.logstat.StatLog.writeLog(StatLog.java:190)
at com.taobao.logstat.StatLog.access$300(StatLog.java:33)
at com.taobao.logstat.StatLog$1.run(StatLog.java:156)
at java.lang.Thread.run(Thread.java:662)
Exception in thread "thread-2" java.lang.NoClassDefFoundError: org/apache/mina/common/ExceptionMonitor
at org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(SocketIoProcessor.java:512)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
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)
Caused by: java.lang.ClassNotFoundException: org.apache.mina.common.ExceptionMonitor
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
... 5 more
tomcat eclipse 启动报错
[解决办法]
你看看eclipse是不是配置了多个版本的JDK。
[解决办法]
应该是容器的问题吧，把项目重新导入进你的eclipse里面，然后再启动下看？
[解决办法]
你先试试把其他版本的JDK删掉，然后project-clean一下，
[解决办法]
project clean一下，把tomcat的work文件夹的东西删掉试试，或者重新导入项目
[解决办法]
回复于： 2013-02-20 11:03:08
你看看eclipse是不是配置了多个版本的JDK。
[解决办法]
Servers 中的 server.xml文件 打开 拖到最后 修改
<Context docBase="test" path="/test" reloadable="false" source="org.eclipse.jst.jee.server:t8"/></Host>
[解决办法]
不用 只要你是在 调试状态下打开的tomcat 就不用重启服务器
[解决办法]
8#是正确的，楼主不试试怎么知道不行？工作几年不一定知道这个秘密，嘿嘿。
[解决办法]
+1用调试模式；不要用启动模式