java servlet API学习网址：

http://tomcat.apache.org/tomcat-7.0-doc/servletapi/

http://tomcat.apache.org/tomcat-5.5-doc/servletapi/javax/servlet/package-tree.html

一、API 概述

二、Tree

Hierarchy For All Packages

　　Package Hierarchies:

• • javax.servlet,
  • javax.servlet.annotation,
  • javax.servlet.descriptor,
  • javax.servlet.http

Class Hierarchy

• • java.lang.Object
    • javax.servlet.AsyncEvent
    • javax.servlet.http.Cookie (implements java.lang.Cloneable, java.io.Serializable)
    • java.util.EventObject (implements java.io.Serializable)
    • javax.servlet.http.HttpSessionEvent
      • javax.servlet.http.HttpSessionBindingEvent
    • javax.servlet.ServletContextEvent
      • javax.servlet.ServletContextAttributeEvent
    • javax.servlet.ServletRequestEvent
      • javax.servlet.ServletRequestAttributeEvent
    • javax.servlet.GenericServlet (implements java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig)
    • javax.servlet.http.HttpServlet
    • javax.servlet.HttpConstraintElement
    • javax.servlet.HttpMethodConstraintElement
    • javax.servlet.ServletSecurityElement
    • javax.servlet.http.HttpUtils
    • java.io.InputStream (implements java.io.Closeable)
    • javax.servlet.ServletInputStream
    • javax.servlet.MultipartConfigElement
    • java.io.OutputStream (implements java.io.Closeable, java.io.Flushable)
    • javax.servlet.ServletOutputStream
    • javax.servlet.ServletRequestWrapper (implements javax.servlet.ServletRequest)
    • javax.servlet.http.HttpServletRequestWrapper (implements javax.servlet.http.HttpServletRequest)
    • javax.servlet.ServletResponseWrapper (implements javax.servlet.ServletResponse)
    • javax.servlet.http.HttpServletResponseWrapper (implements javax.servlet.http.HttpServletResponse)
    • java.lang.Throwable (implements java.io.Serializable)
    • java.lang.Exception
      • javax.servlet.ServletException
        • javax.servlet.UnavailableException

Interface Hierarchy

• • javax.servlet.AsyncContext
  • java.util.EventListener
    • javax.servlet.AsyncListener
    • javax.servlet.http.HttpSessionActivationListener
    • javax.servlet.http.HttpSessionAttributeListener
    • javax.servlet.http.HttpSessionBindingListener
    • javax.servlet.http.HttpSessionListener
    • javax.servlet.ServletContextAttributeListener
    • javax.servlet.ServletContextListener
    • javax.servlet.ServletRequestAttributeListener
    • javax.servlet.ServletRequestListener
  • javax.servlet.Filter
  • javax.servlet.FilterChain
  • javax.servlet.FilterConfig
  • javax.servlet.http.HttpSession
  • javax.servlet.http.HttpSessionContext
  • javax.servlet.descriptor.JspConfigDescriptor
  • javax.servlet.descriptor.JspPropertyGroupDescriptor
  • javax.servlet.http.Part
  • javax.servlet.Registration
    • javax.servlet.FilterRegistration
    • javax.servlet.FilterRegistration.Dynamic (also extends javax.servlet.Registration.Dynamic)
    • javax.servlet.FilterRegistration.Dynamic (also extends javax.servlet.FilterRegistration, javax.servlet.Registration.Dynamic)
    • javax.servlet.Registration.Dynamic
    • javax.servlet.FilterRegistration.Dynamic (also extends javax.servlet.FilterRegistration)
    • javax.servlet.ServletRegistration.Dynamic (also extends javax.servlet.ServletRegistration)
    • javax.servlet.ServletRegistration
    • javax.servlet.ServletRegistration.Dynamic (also extends javax.servlet.Registration.Dynamic)
    • javax.servlet.ServletRegistration.Dynamic (also extends javax.servlet.Registration.Dynamic, javax.servlet.ServletRegistration)
  • javax.servlet.RequestDispatcher
  • javax.servlet.Servlet
  • javax.servlet.ServletConfig
  • javax.servlet.ServletContainerInitializer
  • javax.servlet.ServletContext
  • javax.servlet.ServletRequest
    • javax.servlet.http.HttpServletRequest
  • javax.servlet.ServletResponse
    • javax.servlet.http.HttpServletResponse
  • javax.servlet.SessionCookieConfig
  • javax.servlet.SingleThreadModel
  • javax.servlet.descriptor.TaglibDescriptor

Annotation Type Hierarchy

• • javax.servlet.annotation.WebServlet (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.WebListener (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.WebInitParam (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.WebFilter (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.ServletSecurity (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.MultipartConfig (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.HttpMethodConstraint (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.HttpConstraint (implements java.lang.annotation.Annotation)
  • javax.servlet.annotation.HandlesTypes (implements java.lang.annotation.Annotation)

Enum Hierarchy

• • java.lang.Object
    • java.lang.Enum<E> (implements java.lang.Comparable<T>, java.io.Serializable)
    • javax.servlet.SessionTrackingMode
    • javax.servlet.DispatcherType
    • javax.servlet.annotation.ServletSecurity.EmptyRoleSemantic
    • javax.servlet.annotation.ServletSecurity.TransportGuarantee