将多个 web 应用程序部署到单个端口 80 上的 tomcat

Question

1. I need to host two websites on one tomcat server. Both on port 80. Eg

A) abc.com B) def.com both on one apache tomcat server.

I do have two folders named: abc-app1-apps and def-app2-apps instead of the standard webapps and webapps2 as I have read using folders starting with webapps may cause a conflict?

How do I do this?

2. I'm confused between appBase and docBase. one guide claims i need it, another claims I do not need it. Is there a good guide to this somewhere? I've tried looking at the tomcat reference but it doesn't provide examples.

    <Host name="abc.com"  appBase="abc-app1-apps" unpackWARs="true" autoDeploy="true" reloadable="true">
    <Alias>abc.com</Alias>

    </Host>


    <Host name="def.com"  appBase="def-app2-apps" unpackWARs="true" autoDeploy="true" reloadable="true">
    <Alias>def.com</Alias>

    <Context path="" docBase="."/>

    </Host>

Answer 1

You can add all the .war files you want in the same webapps folder.

For example, you could have two .war files: website1.war and website2.war and both websites working under the same port (80).

Answer 2

I am getting the following errors when I try to deploy it. 2-Aug-2022 14:47:53.116 SEVERE [main] org.apache.catalina.startup.HostConfig.deployWAR Error deploying web application archive [C:\apache-tomcat-9.0.46\webapps\Test2-0.0.1-SNAPSHOT.war] java.lang.IllegalStateException: Error starting child at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:720) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:692) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1023) at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1903 ) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:824) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1611) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:829) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) at org.ZB6EFD606D118D0F62066E31419FF04CC Z.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) at java.util.concurrent.FutureTask.run(Unknown Source) at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) at java.util.concurrent.AbstractExecutorService.submit(Unknown Source) at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardService.startInternal(StandardService.Z93F725A07423FE1C889F4 48B33D21F46Z:433) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.startup.Catalina.start(Catalina.java:772) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:342) at org.apache.catalina.startup.B ootstrap.main(Bootstrap.java:473) Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Test2-0.0.1-SNAPSHOT]] at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)... 37 more Caused by: java.lang.IllegalArgumentException: More than one fragment with the name [org_apache_jasper_el] was found. This is not legal with relative ordering. See section 8.2.2 2c of the Servlet specification for details. Consider using absolute ordering. at org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2260) at org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2218) at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1294) at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:986) at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:303) at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) at org.ZB6EFD606D118D0F62066E3141 9FF04CCZ.catalina.core.StandardContext.startInternal(StandardContext.java:5077) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)... 38 more 2