Tomcat常见异常及解决方案代码实例
公司项目，开发语言为java，中间件为tomcat，运行过程中，从tomcat出现了一些异常，现将异常及解决办法记录如下，仅供参考。（不断在补充中.......）
异常一：
1、日志内容
org.apache.coyote.http11.abstracthttp11processor.process error parsing http request header
note: further occurrences of http header parsing errors will be logged at debug level.
java.lang.illegalargumentexception: invalid character found in method name. http method names must be tokens
at org.apache.coyote.http11.abstractnioinputbuffer.parserequestline(abstractnioinputbuffer.java:233)
at org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1017)
at org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:684)
at org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1520)
at org.apache.tomcat.util.net.nioendpoint$socketprocessor.run(nioendpoint.java:1476)
at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145)
at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615)
at org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61)
at java.lang.thread.run(thread.java:745)
2、解决办法
在tomcat安装文件夹的 conf/catalina.properties 中最后添加一行：
org.apache.tomcat.util.buf.udecoder.allow_encoded_slash=true
异常二：
1、日志内容
com.alibaba.druid.stat.druidstatservice]unregister mbean error javax.management.instancenotfoundexception: com.alibaba.druid:type=druidstatservice at com.sun.jmx.interceptor.defaultmbeanserverinterceptor.getmbean(defaultmbeanserverinterceptor.java:1095) at com.sun.jmx.interceptor.defaultmbeanserverinterceptor.exclusiveunregistermbean(defaultmbeanserverinterceptor.java:427) at com.sun.jmx.interceptor.defaultmbeanserverinterceptor.unregistermbean(defaultmbeanserverinterceptor.java:415) at com.sun.jmx.mbeanserver.jmxmbeanserver.unregistermbean(jmxmbeanserver.java:546) at com.alibaba.druid.stat.druidstatservice.unregistermbean(druidstatservice.java:374) at com.alibaba.druid.stat.druiddatasourcestatmanager.removedatasource(druiddatasourcestatmanager.java:202) at com.alibaba.druid.pool.druiddatasource$2.run(druiddatasource.java:1479) at java.security.accesscontroller.doprivileged(native method) at com.alibaba.druid.pool.druiddatasource.unregistermbean(druiddatasource.java:1475) at com.alibaba.druid.pool.druiddatasource.close(druiddatasource.java:1434) at sun.reflect.nativemethodaccessorimpl.invoke0(native method) at sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:57) at sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43) at java.lang.reflect.method.invoke(method.java:606) at org.springframework.beans.factory.support.disposablebeanadapter.invokecustomdestroymethod(disposablebeanadapter.java:354) at org.springframework.beans.factory.support.disposablebeanadapter.destroy(disposablebeanadapter.java:277) at org.springframework.beans.factory.support.defaultsingletonbeanregistry.destroybean(defaultsingletonbeanregistry.java:578) at org.springframework.beans.factory.support.defaultsingletonbeanregistry.destroysingleton(defaultsingletonbeanregistry.java:554) at org.springframework.beans.factory.support.defaultlistablebeanfactory.destroysingleton(defaultlistablebeanfactory.java:972) at org.springframework.beans.factory.support.defaultsingletonbeanregistry.destroysingletons(defaultsingletonbeanregistry.java:523) at org.springframework.beans.factory.support.defaultlistablebeanfactory.destroysingletons(defaultlistablebeanfactory.java:979) at org.springframework.context.support.abstractapplicationcontext.destroybeans(abstractapplicationcontext.java:1006) at org.springframework.context.support.abstractapplicationcontext.doclose(abstractapplicationcontext.java:982) at org.springframework.context.support.abstractapplicationcontext.close(abstractapplicationcontext.java:934) at org.springframework.web.context.contextloader.closewebapplicationcontext(contextloader.java:583) at org.springframework.web.context.contextloaderlistener.contextdestroyed(contextloaderlistener.java:116) at org.apache.catalina.core.standardcontext.listenerstop(standardcontext.java:4900) at org.apache.catalina.core.standardcontext.stopinternal(standardcontext.java:5537) at org.apache.catalina.util.lifecyclebase.stop(lifecyclebase.java:221) at org.apache.catalina.core.containerbase$stopchild.call(containerbase.java:1424) at org.apache.catalina.core.containerbase$stopchild.call(containerbase.java:1413) at java.util.concurrent.futuretask.run(futuretask.java:262) at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145) at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615) at java.lang.thread.run(thread.java:745)
2、解决办法
修改tomcat的bin目录下的catalina.sh文件，在# os specific support. $var _must_ be set to either true or false.与cygwin=false之间加上java_opts="-ddruid.registertosysproperty=true"
异常三：
1、日志内容
info [http-nio-80-exec-16] org.apache.coyote.http11.abstracthttp11processor.process error parsing http request header note: further occurrences of http header parsing errors will be logged at debug level. java.lang.illegalargumentexception: invalid character found in method name. http method names must be tokens at org.apache.coyote.http11.abstractnioinputbuffer.parserequestline(abstractnioinputbuffer.java:236) at org.apache.coyote.http11.abstracthttp11processor.process(abstracthttp11processor.java:1065) at org.apache.coyote.abstractprotocol$abstractconnectionhandler.process(abstractprotocol.java:684) at org.apache.tomcat.util.net.nioendpoint$socketprocessor.dorun(nioendpoint.java:1539) at org.apache.tomcat.util.net.nioendpoint$socketprocessor.run(nioendpoint.java:1495) at java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145) at java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615) at org.apache.tomcat.util.threads.taskthread$wrappingrunnable.run(taskthread.java:61) at java.lang.thread.run(thread.java:745)
2、解决办法
修改tomcat安装文件夹的 conf/server.xml，在 <connector port="8080" protocol="http/1.1" connectiontimeout="20000" maxhttpheadersize ="10240" redirectport="8443" />中，maxhttpheadersize的默认值是8*1024，你只需要调成你需要的值就好了。
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