Java Servlets 4.0

This feature enables support for HTTP Servlets written to the Java Servlet 4.0 specification. We can package servlets in Java EE specified WAR or EAR files. If servlet security is required, you should also configure an appSecurity feature. Without a security feature, any security constraints for the application are ignored.

Enable this feature

To enable the Java Servlets 4.0 feature, add the following element declaration into the server.xml file, inside the featureManager element:

<feature>servlet-4.0</feature>

Feature configuration elements

• application
• applicationManager
• applicationMonitor
• channelfw
• classloader
• classloading
• compression
• cors
• enterpriseApplication
• headers
• httpAccessLogging
• httpDispatcher
• httpEncoding
• httpEndpoint
• httpOptions
• httpProxyRedirect
• httpSession
• javaPermission
• library
• mimeTypes
• pluginConfiguration
• remoteIp
• samesite
• tcpOptions
• virtualHost
• webApplication
• webContainer

Standard API packages provided by this feature

• javax.annotation
• javax.annotation.security
• javax.annotation.sql
• javax.servlet
• javax.servlet.annotation
• javax.servlet.descriptor
• javax.servlet.http
• javax.servlet.resources

Liberty API packages provided by this feature

• com.ibm.websphere.endpoint
• com.ibm.websphere.servlet.container
• com.ibm.websphere.servlet.context
• com.ibm.websphere.servlet.error
• com.ibm.websphere.servlet.event
• com.ibm.websphere.servlet.session
• com.ibm.websphere.webcontainer
• com.ibm.wsspi.servlet.session

Supported Java versions

• JavaSE-1.8
• JavaSE-11.0
• JavaSE-17.0
• JavaSE-21.0
• JavaSE-24.0

Platform Versions

• javaee-8.0
• jakartaee-8.0

Features that enable this feature

• acmeCA-2.0
• adminCenter-1.0
• apiDiscovery-1.0
• appSecurity-1.0
• appSecurity-3.0
• audit-1.0
• audit-2.0
• batch-1.0
• batchManagement-1.0
• clusterMember-1.0
• collectiveController-1.0
• collectiveMember-1.0
• dynamicRouting-1.0
• grpc-1.0
• grpcClient-1.0
• healthAnalyzer-1.0
• healthManager-1.0
• httpWhiteboard-1.0
• jakartaee-8.0
• jaspic-1.1
• javaee-8.0
• jaxrs-2.1
• jaxrsClient-2.1
• jsf-2.3
• jsfContainer-2.3
• jsp-2.3
• jwtSso-1.0
• microProfile-1.2
• microProfile-1.3
• microProfile-1.4
• microProfile-2.0
• microProfile-2.1
• microProfile-2.2
• microProfile-3.0
• microProfile-3.2
• microProfile-3.3
• microProfile-4.0
• microProfile-4.1
• mpGraphQL-1.0
• mpHealth-1.0
• mpHealth-2.0
• mpHealth-2.1
• mpHealth-2.2
• mpHealth-3.0
• mpHealth-3.1
• mpJwt-1.0
• mpJwt-1.1
• mpJwt-1.2
• mpMetrics-1.0
• mpMetrics-1.1
• mpMetrics-2.0
• mpMetrics-2.2
• mpMetrics-2.3
• mpMetrics-3.0
• mpOpenAPI-1.0
• mpOpenAPI-1.1
• mpOpenAPI-2.0
• oauth-2.0
• openapi-3.0
• openapi-3.1
• openid-2.0
• openidConnectClient-1.0
• openidConnectServer-1.0
• passwordUtilities-1.0
• passwordUtilities-1.1
• restConnector-2.0
• rtcomm-1.0
• rtcommGateway-1.0
• samlWeb-2.0
• scalingController-1.0
• scalingMember-1.0
• scim-1.0
• sipServlet-1.1
• socialLogin-1.0
• spnego-1.0
• webCache-1.0
• webProfile-8.0
• websocket-1.0
• websocket-1.1
• wsAtomicTransaction-1.2
• wsSecuritySaml-1.1

Develop a feature that depends on this feature

If we are developing a feature that depends on this feature, include the following item in the Subsystem-Content header in your feature manifest file.

com.ibm.websphere.appserver.servlet-4.0; type="osgi.subsystem.feature"

SPI packages provided by this feature

• com.ibm.websphere.servlet.filter
• com.ibm.websphere.servlet.request
• com.ibm.websphere.servlet.response
• com.ibm.websphere.webcontainer.async
• com.ibm.ws.adaptable.module.structure
• com.ibm.ws.anno.classsource.specification
• com.ibm.ws.webcontainer.extension
• com.ibm.ws.webcontainer.spiadapter.collaborator
• com.ibm.wsspi.adaptable.module
• com.ibm.wsspi.adaptable.module.adapters
• com.ibm.wsspi.anno.classsource
• com.ibm.wsspi.anno.info
• com.ibm.wsspi.anno.service
• com.ibm.wsspi.anno.targets
• com.ibm.wsspi.anno.util
• com.ibm.wsspi.artifact
• com.ibm.wsspi.artifact.equinox.module
• com.ibm.wsspi.artifact.factory
• com.ibm.wsspi.artifact.factory.contributor
• com.ibm.wsspi.artifact.overlay
• com.ibm.wsspi.http
• com.ibm.wsspi.http.ee8
• com.ibm.wsspi.webcontainer
• com.ibm.wsspi.webcontainer.collaborator
• com.ibm.wsspi.webcontainer.extension
• com.ibm.wsspi.webcontainer.filter
• com.ibm.wsspi.webcontainer.metadata
• com.ibm.wsspi.webcontainer.osgi.extension
• com.ibm.wsspi.webcontainer.servlet
• com.ibm.wsspi.webcontainer.webapp