问题描述
我安装了Windows 2016 64位服务器，该服务器运行带有Tomcat / 8.5.35和BonCodeAJP Connector的lucee 5.3.1.102。
一切通常都很顺利，该网站平均每天有60万至100万用户。在极少数情况下，我们会出现以下错误：
Generic Connector Communication Error:
Please check and adjust your setup:
Ensure that Tomcat is running on given host and port.
If this is a timeout error consider adjusting IIS timeout by changing
executionTimeout attribute in web.config (see manual).
当浏览器显示错误时，再次显示网站的实际页面的唯一方法是清除所有网站数据。如果仅刷新，它会再次显示错误，尽管该网站现在可以正常运行了（该错误被显示一次，但是无论重新加载多少次，错误页面仍会显示在浏览器上，因此用户认为该网站已关闭，直到他尝试使用隐身窗口或其他浏览器。
那么，有什么方法可以更改错误页面，使其自动重定向或使内容过期，以便浏览器可以再次访问该网站。 您还知道为什么即使在极少数情况下也会出现此错误吗？
预先感谢您的帮助 这是server.xml
<?xml version='1.0' encoding='utf-8'?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License,Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,software
distributed under the License is distributed on an "AS IS" BASIS,WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- Note: A "Server" is not itself a "Container",so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener" />
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<!-- <GlobalNamingResources> -->
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<!-- <Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" /> -->
<!-- </GlobalNamingResources> -->
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor,you can define one or more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL/TLS HTTP/1.1 Connector on port 8080
-->
<Connector port="8888" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443
This connector uses the NIO implementation that requires the JSSE
style configuration. When using the APR/native implementation,the
OpenSSL style configuration is required as described in the APR/native
documentation -->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8009" protocol="AJP/1.3" keepAliveTimeout="-1" connectionTimeout="121000" packetSize="65530" redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request,and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="127.0.0.1">
<!--For clustering,please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<!-- <Realm className="org.apache.catalina.realm.LockOutRealm"> -->
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<!-- <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/> -->
<!-- </Realm> -->
<Host name="127.0.0.1" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<!-- SingleSignOn valve,share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log" suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
<!-- visit modcfml.org for details on mod_cfml configuration options -->
<Valve className="mod_cfml.core"
loggingEnabled="false"
maxContexts="200"
timeBetweenContexts="2000"
scanClasspaths="false"
sharedKey="8cb4bca1476f6af2ef9e5f548bfdf7c58015ba1fad1adc9818863b8ea2b8af50"
/>
</Host>
<!--
Add additional VIRTUALHOSTS by copying the following example config:
REPLACE:
[ENTER DOMAIN NAME] with a domain,IE: "mysite.com"
[ENTER SYstem PATH] with your web site's base directory. IE: /home/user/public_html/ or C:\websites\www.mysite.com\ etc...
[ENTER DOMAIN ALIAS] with any domain that also points to this same site/directory. You can repeat this tag as often as needed.
Don't forget to remove comments!
-->
<!--
EXAMPLE HOST ENTRY:
<Host name="lucee.org" appBase="webapps">
<Context path="" docBase="/var/sites/lucee.org" />
<Alias>www.lucee.org</Alias>
<Alias>my.lucee.org</Alias>
</Host>
HOST ENTRY TEMPLATE:
<Host name="[ENTER DOMAIN NAME]" appBase="webapps">
<Context path="" docBase="[ENTER SYstem PATH]" />
<Alias>[ENTER DOMAIN ALIAS]</Alias>
</Host>
-->
<!-- ADD NEW HOSTS HERE -->
<Host name="xxxx.xx" appBase="webapps">
<Context path="" docBase="C:\xxxxxx" />
<Alias>xxx.xx</Alias>
<Alias>www.xxxxx.xx</Alias>
<Alias>xxxx.xxxxxx.xx</Alias>
</Host>
</Engine>
</Service>
</Server>
解决方法
类似您的声音可能达到某种连接限制。尝试为现有连接添加超时（以便清除无效的连接），如果有足够的内存，请尝试添加更多连接。您将需要在BonCode连接器（它使用.NET）和Tomcat的AJP连接器设置中修改设置。可在以下位置找到有关如何执行此操作的文档以及有用的调试部分： http://www.boncode.net/boncode-connector