tomcat web.xml server.xml 学习

最新推荐文章于 2023-12-01 16:53:38 发布

原创最新推荐文章于 2023-12-01 16:53:38 发布 · 253 阅读

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本文深入解析Tomcat服务器的web.xml和server.xml配置文件，涵盖错误页面定制、MIME类型映射、会话管理、监听器配置及连接器参数调整等核心内容。

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web.xml 参数

    <!--
        这个属性可以根据404，500等等http错误代码，tomcat会自动跳转到某个界面
       -->
<!--
<error-page>
    <error-code>404</error-code>
    <location>/index.jsp</location>
</error-page>
<error-page>
    <exception-type>java.lang.NullPointerException</exception-type>
    <location>/index.jsp</location>
</error-page>
-->
    <!--

                是所有的路径拦截就是返回这个界面，而不是原来写的json数据
                  RESPONSE 只是 一个index.jsp界面 不是json数据

    <servlet>
        <servlet-name>dispatcher</servlet-name>
             <jsp-file>/index.jsp</jsp-file>
        <load-on-startup>1</load-on-startup>
    </servlet>-->

    <!--
        http://localhost:9080 默认进入到inde 界面
    -->
<!--<welcome-file-list>-->
    <!--<welcome-file>inde.jsp</welcome-file>-->
<!--</welcome-file-list>-->
<!--
    设定从拓展名到MIME类型的映射关系
    注意 ：</mime-type> 里面有很多的选择
-->
    <!--<mime-mapping>-->
        <!--<extension>foo</extension>-->
        <!--<mime-type>application/alto-costmap+json</mime-type>-->
    <!--</mime-mapping>-->

<!--闲置的购物车在电子商务网站上会消耗掉很多内存资源，浪费RAM资源
    当用户访问已创建回话范围的网页时，Tomcat会记录开始时间，
    如果用户不在访问网页，Tomcat会丢弃该回话并回收内存空间 ，Tomcat孕育你控制在丢弃回话之前，他可闲置的时间长短
    如果设置值太低，会引起用户的反感，如果设置值太高，会浪费内存空间
-->
<!--<session-config>-->
    <!--<session-timeout>30</session-timeout>   &lt;!&ndash; 30分钟&ndash;&gt;-->
<!--</session-config>-->

<!--
    Listener
    实现Web应用程序的Java开发者可能会使用listener类。
    这些类是当发生整个Web应用程序或应用程序中特定的HTTP回话时，系统会以某种事件（如创建或删除）通知的程序
-->

server.xml 参数

<?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.
-->

<Server port="9005" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.startup.VersionLoggerListener" />


<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />

<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />

<GlobalNamingResources>
    
    <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>

<Service name="Catalina">

<Connector port="9080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"
               URIEncoding="UTF-8"

/>

<Connector port="9009" protocol="AJP/1.3" redirectPort="8443" />

<Realm className="org.apache.catalina.realm.LockOutRealm">
        
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t "%r" %s %b" />


           
      </Host>
    </Engine>
</Service>
</Server>