java.lang.Object
- javax.servlet.GenericServlet
- - javax.servlet.http.HttpServlet
  - - org.springframework.web.servlet.HttpServletBean
    - - org.springframework.web.servlet.FrameworkServlet

All Implemented Interfaces:
Serializable, Servlet, ServletConfig, Aware, ApplicationContextAware, EnvironmentAware, EnvironmentCapable
Direct Known Subclasses:
DispatcherServlet
```
public abstract class FrameworkServlet
extends HttpServletBean
implements ApplicationContextAware
```
Base servlet for Spring's web framework. Provides integration with a Spring application context, in a JavaBean-based overall solution.
This class offers the following functionality:
- Manages a WebApplicationContext instance per servlet. The servlet's configuration is determined by beans in the servlet's namespace.
- Publishes events on request processing, whether or not a request is successfully handled.
Subclasses must implement doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) to handle requests. Because this extends HttpServletBean rather than HttpServlet directly, bean properties are automatically mapped onto it. Subclasses can override initFrameworkServlet() for custom initialization.
Detects a "contextClass" parameter at the servlet init-param level, falling back to the default context class, XmlWebApplicationContext, if not found. Note that, with the default FrameworkServlet, a custom context class needs to implement the ConfigurableWebApplicationContext SPI.
Accepts an optional "contextInitializerClasses" servlet init-param that specifies one or more ApplicationContextInitializer classes. The managed web application context will be delegated to these initializers, allowing for additional programmatic configuration, e.g. adding property sources or activating profiles against the context's environment. See also ContextLoader which supports a "contextInitializerClasses" context-param with identical semantics for the "root" web application context.
Passes a "contextConfigLocation" servlet init-param to the context instance, parsing it into potentially multiple file paths which can be separated by any number of commas and spaces, like "test-servlet.xml, myServlet.xml". If not explicitly specified, the context implementation is supposed to build a default location from the namespace of the servlet.
Note: In case of multiple config locations, later bean definitions will override ones defined in earlier loaded files, at least when using Spring's default ApplicationContext implementation. This can be leveraged to deliberately override certain bean definitions via an extra XML file.
The default namespace is "'servlet-name'-servlet", e.g. "test-servlet" for a servlet-name "test" (leading to a "/WEB-INF/test-servlet.xml" default location with XmlWebApplicationContext). The namespace can also be set explicitly via the "namespace" servlet init-param.
As of Spring 3.1, FrameworkServlet may now be injected with a web application context, rather than creating its own internally. This is useful in Servlet 3.0+ environments, which support programmatic registration of servlet instances. See FrameworkServlet(WebApplicationContext) Javadoc for details.
Author:
Rod Johnson, Juergen Hoeller, Sam Brannen, Chris Beams, Rossen Stoyanchev, Phillip Webb
See Also:
doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), setContextClass(java.lang.Class<?>), setContextConfigLocation(java.lang.String), setContextInitializerClasses(java.lang.String), setNamespace(java.lang.String), Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`static Class<?>`	`DEFAULT_CONTEXT_CLASS`	Default context class for FrameworkServlet.
`static String`	`DEFAULT_NAMESPACE_SUFFIX`	Suffix for WebApplicationContext namespaces.
`static String`	`SERVLET_CONTEXT_PREFIX`	Prefix for the ServletContext attribute for the WebApplicationContext.

Fields inherited from class org.springframework.web.servlet.HttpServletBean
logger

Constructor Summary

Constructors
Constructor	Description
`FrameworkServlet()`	Create a new `FrameworkServlet` that will create its own internal web application context based on defaults and values provided through servlet init-params.
`FrameworkServlet(WebApplicationContext webApplicationContext)`	Create a new `FrameworkServlet` with the given web application context.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`applyInitializers(ConfigurableApplicationContext wac)`	Delegate the WebApplicationContext before it is refreshed to any `ApplicationContextInitializer` instances specified by the "contextInitializerClasses" servlet init-param.
`protected LocaleContext`	`buildLocaleContext(HttpServletRequest request)`	Build a LocaleContext for the given request, exposing the request's primary locale as current locale.
`protected ServletRequestAttributes`	`buildRequestAttributes(HttpServletRequest request, HttpServletResponse response, RequestAttributes previousAttributes)`	Build ServletRequestAttributes for the given request (potentially also holding a reference to the response), taking pre-bound attributes (and their type) into consideration.
`protected void`	`configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext wac)`
`protected WebApplicationContext`	`createWebApplicationContext(ApplicationContext parent)`	Instantiate the WebApplicationContext for this servlet, either a default `XmlWebApplicationContext` or a `custom context class`, if set.
`protected WebApplicationContext`	`createWebApplicationContext(WebApplicationContext parent)`	Instantiate the WebApplicationContext for this servlet, either a default `XmlWebApplicationContext` or a `custom context class`, if set.
`void`	`destroy()`	Close the WebApplicationContext of this servlet.
`protected void`	`doDelete(HttpServletRequest request, HttpServletResponse response)`	Delegate DELETE requests to `processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)`.
`protected void`	`doGet(HttpServletRequest request, HttpServletResponse response)`	Delegate GET requests to processRequest/doService.
`protected void`	`doOptions(HttpServletRequest request, HttpServletResponse response)`	Delegate OPTIONS requests to `processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)`, if desired.
`protected void`	`doPost(HttpServletRequest request, HttpServletResponse response)`	Delegate POST requests to `processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)`.
`protected void`	`doPut(HttpServletRequest request, HttpServletResponse response)`	Delegate PUT requests to `processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)`.
`protected abstract void`	`doService(HttpServletRequest request, HttpServletResponse response)`	Subclasses must implement this method to do the work of request handling, receiving a centralized callback for GET, POST, PUT and DELETE.
`protected void`	`doTrace(HttpServletRequest request, HttpServletResponse response)`	Delegate TRACE requests to `processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)`, if desired.
`protected WebApplicationContext`	`findWebApplicationContext()`	Retrieve a `WebApplicationContext` from the `ServletContext` attribute with the `configured name`.
`String`	`getContextAttribute()`	Return the name of the ServletContext attribute which should be used to retrieve the `WebApplicationContext` that this servlet is supposed to use.
`Class<?>`	`getContextClass()`	Return the custom context class.
`String`	`getContextConfigLocation()`	Return the explicit context config location, if any.
`String`	`getContextId()`	Return the custom WebApplicationContext id, if any.
`String`	`getNamespace()`	Return the namespace for this servlet, falling back to default scheme if no custom namespace was set: e.g.
`String`	`getServletContextAttributeName()`	Return the ServletContext attribute name for this servlet's WebApplicationContext.
`protected String`	`getUsernameForRequest(HttpServletRequest request)`	Determine the username for the given request.
`WebApplicationContext`	`getWebApplicationContext()`	Return this servlet's WebApplicationContext.
`protected void`	`initFrameworkServlet()`	This method will be invoked after any bean properties have been set and the WebApplicationContext has been loaded.
`protected void`	`initServletBean()`	Overridden method of `HttpServletBean`, invoked after any bean properties have been set.
`protected WebApplicationContext`	`initWebApplicationContext()`	Initialize and publish the WebApplicationContext for this servlet.
`void`	`onApplicationEvent(ContextRefreshedEvent event)`	Callback that receives refresh events from this servlet's WebApplicationContext.
`protected void`	`onRefresh(ApplicationContext context)`	Template method which can be overridden to add servlet-specific refresh work.
`protected void`	`postProcessWebApplicationContext(ConfigurableWebApplicationContext wac)`	Post-process the given WebApplicationContext before it is refreshed and activated as context for this servlet.
`protected void`	`processRequest(HttpServletRequest request, HttpServletResponse response)`	Process this request, publishing an event regardless of the outcome.
`void`	`refresh()`	Refresh this servlet's application context, as well as the dependent state of the servlet.
`protected void`	`service(HttpServletRequest request, HttpServletResponse response)`	Override the parent class implementation in order to intercept PATCH requests.
`void`	`setApplicationContext(ApplicationContext applicationContext)`	Called by Spring via `ApplicationContextAware` to inject the current application context.
`void`	`setContextAttribute(String contextAttribute)`	Set the name of the ServletContext attribute which should be used to retrieve the `WebApplicationContext` that this servlet is supposed to use.
`void`	`setContextClass(Class<?> contextClass)`	Set a custom context class.
`void`	`setContextConfigLocation(String contextConfigLocation)`	Set the context config location explicitly, instead of relying on the default location built from the namespace.
`void`	`setContextId(String contextId)`	Specify a custom WebApplicationContext id, to be used as serialization id for the underlying BeanFactory.
`void`	`setContextInitializerClasses(String contextInitializerClasses)`	Specify the set of fully-qualified `ApplicationContextInitializer` class names, per the optional "contextInitializerClasses" servlet init-param.
`void`	`setContextInitializers(ApplicationContextInitializer<?>... initializers)`	Specify which `ApplicationContextInitializer` instances should be used to initialize the application context used by this `FrameworkServlet`.
`void`	`setDispatchOptionsRequest(boolean dispatchOptionsRequest)`	Set whether this servlet should dispatch an HTTP OPTIONS request to the `doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)` method.
`void`	`setDispatchTraceRequest(boolean dispatchTraceRequest)`	Set whether this servlet should dispatch an HTTP TRACE request to the `doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)` method.
`void`	`setNamespace(String namespace)`	Set a custom namespace for this servlet, to be used for building a default context config location.
`void`	`setPublishContext(boolean publishContext)`	Set whether to publish this servlet's context as a ServletContext attribute, available to all objects in the web container.
`void`	`setPublishEvents(boolean publishEvents)`	Set whether this servlet should publish a ServletRequestHandledEvent at the end of each request.
`void`	`setThreadContextInheritable(boolean threadContextInheritable)`	Set whether to expose the LocaleContext and RequestAttributes as inheritable for child threads (using an `InheritableThreadLocal`).

Methods inherited from class org.springframework.web.servlet.HttpServletBean
addRequiredProperty, createEnvironment, getEnvironment, getServletContext, getServletName, init, initBeanWrapper, setEnvironment

Methods inherited from class javax.servlet.http.HttpServlet
doHead, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletInfo, init, log, log

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEFAULT_NAMESPACE_SUFFIX
```
public static final String DEFAULT_NAMESPACE_SUFFIX
```
    Suffix for WebApplicationContext namespaces. If a servlet of this class is given the name "test" in a context, the namespace used by the servlet will resolve to "test-servlet".
    See Also:
    Constant Field Values
  - DEFAULT_CONTEXT_CLASS
```
public static final Class<?> DEFAULT_CONTEXT_CLASS
```
    Default context class for FrameworkServlet.
    See Also:
    XmlWebApplicationContext
  - SERVLET_CONTEXT_PREFIX
```
public static final String SERVLET_CONTEXT_PREFIX
```
    Prefix for the ServletContext attribute for the WebApplicationContext. The completion is the servlet name.
- Constructor Detail
  - FrameworkServlet
```
public FrameworkServlet()
```
    Create a new FrameworkServlet that will create its own internal web application context based on defaults and values provided through servlet init-params. Typically used in Servlet 2.5 or earlier environments, where the only option for servlet registration is through web.xml which requires the use of a no-arg constructor.
    Calling setContextConfigLocation(java.lang.String) (init-param 'contextConfigLocation') will dictate which XML files will be loaded by the default XmlWebApplicationContext
    Calling setContextClass(java.lang.Class<?>) (init-param 'contextClass') overrides the default XmlWebApplicationContext and allows for specifying an alternative class, such as AnnotationConfigWebApplicationContext.
    Calling setContextInitializerClasses(java.lang.String) (init-param 'contextInitializerClasses') indicates which ApplicationContextInitializer classes should be used to further configure the internal application context prior to refresh().
    See Also:
    FrameworkServlet(WebApplicationContext)
  - FrameworkServlet
```
public FrameworkServlet(WebApplicationContext webApplicationContext)
```
    Create a new FrameworkServlet with the given web application context. This constructor is useful in Servlet 3.0+ environments where instance-based registration of servlets is possible through the ServletContext.addServlet(java.lang.String, java.lang.String) API.
    Using this constructor indicates that the following properties / init-params will be ignored:
    setContextClass(Class) / 'contextClass'
    setContextConfigLocation(String) / 'contextConfigLocation'
    setContextAttribute(String) / 'contextAttribute'
    setNamespace(String) / 'namespace'
    The given web application context may or may not yet be refreshed. If it (a) is an implementation of ConfigurableWebApplicationContext and (b) has not already been refreshed (the recommended approach), then the following will occur:
    If the given context does not already have a parent, the root application context will be set as the parent.
    If the given context has not already been assigned an id, one will be assigned to it
    ServletContext and ServletConfig objects will be delegated to the application context
    postProcessWebApplicationContext(org.springframework.web.context.ConfigurableWebApplicationContext) will be called
    Any ApplicationContextInitializers specified through the "contextInitializerClasses" init-param or through the setContextInitializers(org.springframework.context.ApplicationContextInitializer<?>...) property will be applied.
    refresh() will be called
    If the context has already been refreshed or does not implement ConfigurableWebApplicationContext, none of the above will occur under the assumption that the user has performed these actions (or not) per his or her specific needs.
    See WebApplicationInitializer for usage examples.
    Parameters:
    webApplicationContext - the context to use
    See Also:
    initWebApplicationContext(), configureAndRefreshWebApplicationContext(org.springframework.web.context.ConfigurableWebApplicationContext), WebApplicationInitializer
- Method Detail
  - setContextAttribute
```
public void setContextAttribute(String contextAttribute)
```
    Set the name of the ServletContext attribute which should be used to retrieve the WebApplicationContext that this servlet is supposed to use.
  - getContextAttribute
```
public String getContextAttribute()
```
    Return the name of the ServletContext attribute which should be used to retrieve the WebApplicationContext that this servlet is supposed to use.
  - setContextClass
```
public void setContextClass(Class<?> contextClass)
```
    Set a custom context class. This class must be of type WebApplicationContext.
    When using the default FrameworkServlet implementation, the context class must also implement the ConfigurableWebApplicationContext interface.
    See Also:
    createWebApplicationContext(org.springframework.context.ApplicationContext)
  - getContextClass
```
public Class<?> getContextClass()
```
    Return the custom context class.
  - setContextId
```
public void setContextId(String contextId)
```
    Specify a custom WebApplicationContext id, to be used as serialization id for the underlying BeanFactory.
  - getContextId
```
public String getContextId()
```
    Return the custom WebApplicationContext id, if any.
  - setNamespace
```
public void setNamespace(String namespace)
```
    Set a custom namespace for this servlet, to be used for building a default context config location.
  - getNamespace
```
public String getNamespace()
```
    Return the namespace for this servlet, falling back to default scheme if no custom namespace was set: e.g. "test-servlet" for a servlet named "test".
  - setContextConfigLocation
```
public void setContextConfigLocation(String contextConfigLocation)
```
    Set the context config location explicitly, instead of relying on the default location built from the namespace. This location string can consist of multiple locations separated by any number of commas and spaces.
  - getContextConfigLocation
```
public String getContextConfigLocation()
```
    Return the explicit context config location, if any.
  - setContextInitializers
```
public void setContextInitializers(ApplicationContextInitializer<?>... initializers)
```
    Specify which ApplicationContextInitializer instances should be used to initialize the application context used by this FrameworkServlet.
    See Also:
    configureAndRefreshWebApplicationContext(org.springframework.web.context.ConfigurableWebApplicationContext), applyInitializers(org.springframework.context.ConfigurableApplicationContext)
  - setContextInitializerClasses
```
public void setContextInitializerClasses(String contextInitializerClasses)
```
    Specify the set of fully-qualified ApplicationContextInitializer class names, per the optional "contextInitializerClasses" servlet init-param.
    See Also:
    configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext), applyInitializers(ConfigurableApplicationContext)
  - setPublishContext
```
public void setPublishContext(boolean publishContext)
```
    Set whether to publish this servlet's context as a ServletContext attribute, available to all objects in the web container. Default is "true".
    This is especially handy during testing, although it is debatable whether it's good practice to let other application objects access the context this way.
  - setPublishEvents
```
public void setPublishEvents(boolean publishEvents)
```
    Set whether this servlet should publish a ServletRequestHandledEvent at the end of each request. Default is "true"; can be turned off for a slight performance improvement, provided that no ApplicationListeners rely on such events.
    See Also:
    ServletRequestHandledEvent
  - setThreadContextInheritable
```
public void setThreadContextInheritable(boolean threadContextInheritable)
```
    Set whether to expose the LocaleContext and RequestAttributes as inheritable for child threads (using an InheritableThreadLocal).
    Default is "false", to avoid side effects on spawned background threads. Switch this to "true" to enable inheritance for custom child threads which are spawned during request processing and only used for this request (that is, ending after their initial task, without reuse of the thread).
    WARNING: Do not use inheritance for child threads if you are accessing a thread pool which is configured to potentially add new threads on demand (e.g. a JDK ThreadPoolExecutor), since this will expose the inherited context to such a pooled thread.
  - setDispatchOptionsRequest
```
public void setDispatchOptionsRequest(boolean dispatchOptionsRequest)
```
    Set whether this servlet should dispatch an HTTP OPTIONS request to the doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) method.
    Default in the FrameworkServlet is "false", applying HttpServlet's default behavior (i.e.enumerating all standard HTTP request methods as a response to the OPTIONS request). Note however that as of 4.3 the DispatcherServlet sets this property to "true" by default due to its built-in support for OPTIONS.
    Turn this flag on if you prefer OPTIONS requests to go through the regular dispatching chain, just like other HTTP requests. This usually means that your controllers will receive those requests; make sure that those endpoints are actually able to handle an OPTIONS request.
    Note that HttpServlet's default OPTIONS processing will be applied in any case if your controllers happen to not set the 'Allow' header (as required for an OPTIONS response).
  - setDispatchTraceRequest
```
public void setDispatchTraceRequest(boolean dispatchTraceRequest)
```
    Set whether this servlet should dispatch an HTTP TRACE request to the doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) method.
    Default is "false", applying HttpServlet's default behavior (i.e. reflecting the message received back to the client).
    Turn this flag on if you prefer TRACE requests to go through the regular dispatching chain, just like other HTTP requests. This usually means that your controllers will receive those requests; make sure that those endpoints are actually able to handle a TRACE request.
    Note that HttpServlet's default TRACE processing will be applied in any case if your controllers happen to not generate a response of content type 'message/http' (as required for a TRACE response).
  - setApplicationContext
```
public void setApplicationContext(ApplicationContext applicationContext)
```
    Called by Spring via ApplicationContextAware to inject the current application context. This method allows FrameworkServlets to be registered as Spring beans inside an existing WebApplicationContext rather than finding a bootstrapped context.
    Primarily added to support use in embedded servlet containers.
    Specified by:
    setApplicationContext in interface ApplicationContextAware
    Parameters:
    applicationContext - the ApplicationContext object to be used by this object
    Since:
    4.0
    See Also:
    BeanInitializationException
  - initServletBean
```
protected final void initServletBean()
                              throws ServletException
```
    Overridden method of HttpServletBean, invoked after any bean properties have been set. Creates this servlet's WebApplicationContext.
    Overrides:
    initServletBean in class HttpServletBean
    Throws:
    ServletException - if subclass initialization fails
  - initWebApplicationContext
```
protected WebApplicationContext initWebApplicationContext()
```
    Initialize and publish the WebApplicationContext for this servlet.
    Delegates to createWebApplicationContext(org.springframework.context.ApplicationContext) for actual creation of the context. Can be overridden in subclasses.
    Returns:
    the WebApplicationContext instance
    See Also:
    FrameworkServlet(WebApplicationContext), setContextClass(java.lang.Class<?>), setContextConfigLocation(java.lang.String)
  - findWebApplicationContext
```
protected WebApplicationContext findWebApplicationContext()
```
    Retrieve a WebApplicationContext from the ServletContext attribute with the configured name. The WebApplicationContext must have already been loaded and stored in the ServletContext before this servlet gets initialized (or invoked).
    Subclasses may override this method to provide a different WebApplicationContext retrieval strategy.
    Returns:
    the WebApplicationContext for this servlet, or null if not found
    See Also:
    getContextAttribute()
  - createWebApplicationContext
```
protected WebApplicationContext createWebApplicationContext(ApplicationContext parent)
```
    Instantiate the WebApplicationContext for this servlet, either a default XmlWebApplicationContext or a custom context class, if set.
    This implementation expects custom contexts to implement the ConfigurableWebApplicationContext interface. Can be overridden in subclasses.
    Do not forget to register this servlet instance as application listener on the created context (for triggering its callback, and to call ConfigurableApplicationContext.refresh() before returning the context instance.
    Parameters:
    parent - the parent ApplicationContext to use, or null if none
    Returns:
    the WebApplicationContext for this servlet
    See Also:
    XmlWebApplicationContext
  - configureAndRefreshWebApplicationContext
```
protected void configureAndRefreshWebApplicationContext(ConfigurableWebApplicationContext wac)
```
  - createWebApplicationContext
```
protected WebApplicationContext createWebApplicationContext(WebApplicationContext parent)
```
    Instantiate the WebApplicationContext for this servlet, either a default XmlWebApplicationContext or a custom context class, if set. Delegates to #createWebApplicationContext(ApplicationContext).
    Parameters:
    parent - the parent WebApplicationContext to use, or null if none
    Returns:
    the WebApplicationContext for this servlet
    See Also:
    XmlWebApplicationContext, createWebApplicationContext(ApplicationContext)
  - postProcessWebApplicationContext
```
protected void postProcessWebApplicationContext(ConfigurableWebApplicationContext wac)
```
    Post-process the given WebApplicationContext before it is refreshed and activated as context for this servlet.
    The default implementation is empty. refresh() will be called automatically after this method returns.
    Note that this method is designed to allow subclasses to modify the application context, while initWebApplicationContext() is designed to allow end-users to modify the context through the use of ApplicationContextInitializers.
    Parameters:
    wac - the configured WebApplicationContext (not refreshed yet)
    See Also:
    createWebApplicationContext(org.springframework.context.ApplicationContext), initWebApplicationContext(), ConfigurableApplicationContext.refresh()
  - applyInitializers
```
protected void applyInitializers(ConfigurableApplicationContext wac)
```
    Delegate the WebApplicationContext before it is refreshed to any ApplicationContextInitializer instances specified by the "contextInitializerClasses" servlet init-param.
    See also postProcessWebApplicationContext(org.springframework.web.context.ConfigurableWebApplicationContext), which is designed to allow subclasses (as opposed to end-users) to modify the application context, and is called immediately before this method.
    Parameters:
    wac - the configured WebApplicationContext (not refreshed yet)
    See Also:
    createWebApplicationContext(org.springframework.context.ApplicationContext), postProcessWebApplicationContext(org.springframework.web.context.ConfigurableWebApplicationContext), ConfigurableApplicationContext.refresh()
  - getServletContextAttributeName
```
public String getServletContextAttributeName()
```
    Return the ServletContext attribute name for this servlet's WebApplicationContext.
    The default implementation returns SERVLET_CONTEXT_PREFIX + servlet name.
    See Also:
    SERVLET_CONTEXT_PREFIX, HttpServletBean.getServletName()
  - getWebApplicationContext
```
public final WebApplicationContext getWebApplicationContext()
```
    Return this servlet's WebApplicationContext.
  - initFrameworkServlet
```
protected void initFrameworkServlet()
                             throws ServletException
```
    This method will be invoked after any bean properties have been set and the WebApplicationContext has been loaded. The default implementation is empty; subclasses may override this method to perform any initialization they require.
    Throws:
    ServletException - in case of an initialization exception
  - refresh
```
public void refresh()
```
    Refresh this servlet's application context, as well as the dependent state of the servlet.
    See Also:
    getWebApplicationContext(), ConfigurableApplicationContext.refresh()
  - onApplicationEvent
```
public void onApplicationEvent(ContextRefreshedEvent event)
```
    Callback that receives refresh events from this servlet's WebApplicationContext.
    The default implementation calls onRefresh(org.springframework.context.ApplicationContext), triggering a refresh of this servlet's context-dependent state.
    Parameters:
    event - the incoming ApplicationContext event
  - onRefresh
```
protected void onRefresh(ApplicationContext context)
```
    Template method which can be overridden to add servlet-specific refresh work. Called after successful context refresh.
    This implementation is empty.
    Parameters:
    context - the current WebApplicationContext
    See Also:
    refresh()
  - destroy
```
public void destroy()
```
    Close the WebApplicationContext of this servlet.
    Specified by:
    destroy in interface Servlet
    Overrides:
    destroy in class GenericServlet
    See Also:
    ConfigurableApplicationContext.close()
  - service
```
protected void service(HttpServletRequest request,
                       HttpServletResponse response)
                throws ServletException,
                       IOException
```
    Override the parent class implementation in order to intercept PATCH requests.
    Overrides:
    service in class HttpServlet
    Throws:
    ServletException
    IOException
  - doGet
```
protected final void doGet(HttpServletRequest request,
                           HttpServletResponse response)
                    throws ServletException,
                           IOException
```
    Delegate GET requests to processRequest/doService.
    Will also be invoked by HttpServlet's default implementation of doHead, with a NoBodyResponse that just captures the content length.
    Overrides:
    doGet in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), HttpServlet.doHead(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - doPost
```
protected final void doPost(HttpServletRequest request,
                            HttpServletResponse response)
                     throws ServletException,
                            IOException
```
    Delegate POST requests to processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse).
    Overrides:
    doPost in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - doPut
```
protected final void doPut(HttpServletRequest request,
                           HttpServletResponse response)
                    throws ServletException,
                           IOException
```
    Delegate PUT requests to processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse).
    Overrides:
    doPut in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - doDelete
```
protected final void doDelete(HttpServletRequest request,
                              HttpServletResponse response)
                       throws ServletException,
                              IOException
```
    Delegate DELETE requests to processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse).
    Overrides:
    doDelete in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - doOptions
```
protected void doOptions(HttpServletRequest request,
                         HttpServletResponse response)
                  throws ServletException,
                         IOException
```
    Delegate OPTIONS requests to processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), if desired.
    Applies HttpServlet's standard OPTIONS processing otherwise, and also if there is still no 'Allow' header set after dispatching.
    Overrides:
    doOptions in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - doTrace
```
protected void doTrace(HttpServletRequest request,
                       HttpServletResponse response)
                throws ServletException,
                       IOException
```
    Delegate TRACE requests to processRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), if desired.
    Applies HttpServlet's standard TRACE processing otherwise.
    Overrides:
    doTrace in class HttpServlet
    Throws:
    ServletException
    IOException
    See Also:
    doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
  - processRequest
```
protected final void processRequest(HttpServletRequest request,
                                    HttpServletResponse response)
                             throws ServletException,
                                    IOException
```
    Process this request, publishing an event regardless of the outcome.
    The actual event handling is performed by the abstract doService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) template method.
    Throws:
    ServletException
    IOException
  - buildLocaleContext
```
protected LocaleContext buildLocaleContext(HttpServletRequest request)
```
    Build a LocaleContext for the given request, exposing the request's primary locale as current locale.
    Parameters:
    request - current HTTP request
    Returns:
    the corresponding LocaleContext, or null if none to bind
    See Also:
    LocaleContextHolder.setLocaleContext(org.springframework.context.i18n.LocaleContext)
  - buildRequestAttributes
```
protected ServletRequestAttributes buildRequestAttributes(HttpServletRequest request,
                                                          HttpServletResponse response,
                                                          RequestAttributes previousAttributes)
```
    Build ServletRequestAttributes for the given request (potentially also holding a reference to the response), taking pre-bound attributes (and their type) into consideration.
    Parameters:
    request - current HTTP request
    response - current HTTP response
    previousAttributes - pre-bound RequestAttributes instance, if any
    Returns:
    the ServletRequestAttributes to bind, or null to preserve the previously bound instance (or not binding any, if none bound before)
    See Also:
    RequestContextHolder.setRequestAttributes(org.springframework.web.context.request.RequestAttributes)
  - getUsernameForRequest
```
protected String getUsernameForRequest(HttpServletRequest request)
```
    Determine the username for the given request.
    The default implementation takes the name of the UserPrincipal, if any. Can be overridden in subclasses.
    Parameters:
    request - current HTTP request
    Returns:
    the username, or null if none found
    See Also:
    HttpServletRequest.getUserPrincipal()
  - doService
```
protected abstract void doService(HttpServletRequest request,
                                  HttpServletResponse response)
                           throws Exception
```
    Subclasses must implement this method to do the work of request handling, receiving a centralized callback for GET, POST, PUT and DELETE.
    The contract is essentially the same as that for the commonly overridden doGet or doPost methods of HttpServlet.
    This class intercepts calls to ensure that exception handling and event publication takes place.
    Parameters:
    request - current HTTP request
    response - current HTTP response
    Throws:
    Exception - in case of any kind of processing failure
    See Also:
    HttpServlet.doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse), HttpServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)

Class FrameworkServlet

Field Summary

Fields inherited from class org.springframework.web.servlet.HttpServletBean

Constructor Summary

Method Summary

Methods inherited from class org.springframework.web.servlet.HttpServletBean

Methods inherited from class javax.servlet.http.HttpServlet

Methods inherited from class javax.servlet.GenericServlet

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_NAMESPACE_SUFFIX

DEFAULT_CONTEXT_CLASS

SERVLET_CONTEXT_PREFIX

Constructor Detail

FrameworkServlet

FrameworkServlet

Method Detail

setContextAttribute

getContextAttribute

setContextClass

getContextClass

setContextId

getContextId

setNamespace

getNamespace

setContextConfigLocation

getContextConfigLocation

setContextInitializers

setContextInitializerClasses

setPublishContext

setPublishEvents

setThreadContextInheritable

setDispatchOptionsRequest

setDispatchTraceRequest

setApplicationContext

initServletBean

initWebApplicationContext

findWebApplicationContext

createWebApplicationContext

configureAndRefreshWebApplicationContext

createWebApplicationContext

postProcessWebApplicationContext

applyInitializers

getServletContextAttributeName

getWebApplicationContext

initFrameworkServlet

refresh

onApplicationEvent

onRefresh

destroy

service

doGet

doPost

doPut

doDelete

doOptions

doTrace

processRequest

buildLocaleContext

buildRequestAttributes

getUsernameForRequest

doService