| Package | Description | 
|---|---|
| org.springframework.boot.web.embedded.jetty | Embedded reactive and servlet web server implementations backed by Jetty. | 
| org.springframework.boot.web.embedded.tomcat | Embedded reactive and servlet web server implementations backed by Tomcat. | 
| org.springframework.boot.web.embedded.undertow | Embedded reactive and servlet web server implementations backed by Undertow. | 
| org.springframework.boot.web.servlet | Classes and utilities designed to work with the `javax.servlet` specification. | 
| org.springframework.boot.web.servlet.context | Servlet based web integrations with Spring's
  WebApplicationContext. | 
| org.springframework.boot.web.servlet.server | Servlet web server abstractions. | 
| Class and Description | 
|---|
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
| Class and Description | 
|---|
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
| Class and Description | 
|---|
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
| Class and Description | 
|---|
| AbstractFilterRegistrationBean Abstract base  ServletContextInitializerto registerFilters in a
 Servlet 3.0+ container. | 
| DispatcherType Enumeration of filter dispatcher types, identical to
  DispatcherTypeand used in configuration as the servlet API may
 not be present. | 
| DynamicRegistrationBean Base class for Servlet 3.0+  dynamicbased
 registration beans. | 
| RegistrationBean Base class for Servlet 3.0+ based registration beans. | 
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
| ServletContextInitializerBeans.RegistrationBeanAdapter Adapter to convert a given Bean type into a  RegistrationBean(and hence aServletContextInitializer). | 
| ServletRegistrationBean A  ServletContextInitializerto registerServlets in a Servlet 3.0+
 container. | 
| Class and Description | 
|---|
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
| Class and Description | 
|---|
| ServletContextInitializer Interface used to configure a Servlet 3.0+  contextprogrammatically. | 
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