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java.lang.Objectorg.apache.catalina.core.ApplicationContext
public class ApplicationContext
Standard implementation of ServletContext that represents
a web application's execution environment. An instance of this class is
associated with each instance of StandardContext.
| Field Summary | |
|---|---|
protected java.util.Map |
attributes
The context attributes for this context. |
| Constructor Summary | |
|---|---|
ApplicationContext(java.lang.String basePath,
StandardContext context)
Construct a new instance of this class, associated with the specified Context instance. |
|
| Method Summary | |
|---|---|
protected void |
clearAttributes()
Clear all application-created attributes. |
java.lang.Object |
getAttribute(java.lang.String name)
Return the value of the specified context attribute, if any; otherwise return null. |
java.util.Enumeration |
getAttributeNames()
Return an enumeration of the names of the context attributes associated with this context. |
protected StandardContext |
getContext()
|
javax.servlet.ServletContext |
getContext(java.lang.String uri)
Return a ServletContext object that corresponds to a
specified URI on the server. |
java.lang.String |
getContextPath()
Return the main path associated with this context. |
protected javax.servlet.ServletContext |
getFacade()
Return the facade associated with this ApplicationContext. |
java.lang.String |
getInitParameter(java.lang.String name)
Return the value of the specified initialization parameter, or null if this parameter does not exist. |
java.util.Enumeration<java.lang.String> |
getInitParameterNames()
Return the names of the context's initialization parameters, or an empty enumeration if the context has no initialization parameters. |
int |
getMajorVersion()
Return the major version of the Java Servlet API that we implement. |
java.lang.String |
getMimeType(java.lang.String file)
Return the MIME type of the specified file, or null if
the MIME type cannot be determined. |
int |
getMinorVersion()
Return the minor version of the Java Servlet API that we implement. |
javax.servlet.RequestDispatcher |
getNamedDispatcher(java.lang.String name)
Return a RequestDispatcher object that acts as a
wrapper for the named servlet. |
protected java.util.Map |
getReadonlyAttributes()
|
java.lang.String |
getRealPath(java.lang.String path)
Return the real path for a given virtual path, if possible; otherwise return null. |
javax.servlet.RequestDispatcher |
getRequestDispatcher(java.lang.String path)
Return a RequestDispatcher instance that acts as a
wrapper for the resource at the given path. |
java.net.URL |
getResource(java.lang.String path)
Return the URL to the resource that is mapped to a specified path. |
java.io.InputStream |
getResourceAsStream(java.lang.String path)
Return the requested resource as an InputStream. |
java.util.Set |
getResourcePaths(java.lang.String path)
Return a Set containing the resource paths of resources member of the specified collection. |
javax.naming.directory.DirContext |
getResources()
Return the resources object that is mapped to a specified path. |
java.lang.String |
getServerInfo()
Return the name and version of the servlet container. |
javax.servlet.Servlet |
getServlet(java.lang.String name)
Deprecated. As of Java Servlet API 2.1, with no direct replacement. |
java.lang.String |
getServletContextName()
Return the display name of this web application. |
java.util.Enumeration |
getServletNames()
Deprecated. As of Java Servlet API 2.1, with no direct replacement. |
java.util.Enumeration |
getServlets()
Deprecated. As of Java Servlet API 2.1, with no direct replacement. |
void |
log(java.lang.Exception exception,
java.lang.String message)
Deprecated. As of Java Servlet API 2.1, use log(String, Throwable) instead |
void |
log(java.lang.String message)
Writes the specified message to a servlet log file. |
void |
log(java.lang.String message,
java.lang.Throwable throwable)
Writes the specified message and exception to a servlet log file. |
void |
removeAttribute(java.lang.String name)
Remove the context attribute with the specified name, if any. |
void |
setAttribute(java.lang.String name,
java.lang.Object value)
Bind the specified value with the specified context attribute name, replacing any existing value for that name. |
boolean |
setInitParameter(java.lang.String name,
java.lang.String value)
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected java.util.Map attributes
| Constructor Detail |
|---|
public ApplicationContext(java.lang.String basePath,
StandardContext context)
context - The associated Context instance| Method Detail |
|---|
public javax.naming.directory.DirContext getResources()
public java.lang.Object getAttribute(java.lang.String name)
null.
getAttribute in interface javax.servlet.ServletContextname - Name of the context attribute to return
Object containing the value
of the attribute, or null
if no attribute exists matching the given
nameServletContext.getAttributeNames()public java.util.Enumeration getAttributeNames()
getAttributeNames in interface javax.servlet.ServletContextEnumeration of attribute
namesServletContext.getAttribute(java.lang.String)public javax.servlet.ServletContext getContext(java.lang.String uri)
ServletContext object that corresponds to a
specified URI on the server. This method allows servlets to gain
access to the context for various parts of the server, and as needed
obtain RequestDispatcher objects or resources from the
context. The given path must be absolute (beginning with a "/"),
and is interpreted based on our virtual host's document root.
getContext in interface javax.servlet.ServletContexturi - Absolute URI of a resource on the server
ServletContext object that
corresponds to the named URL, or null if either
none exists or the container wishes to restrict
this access.RequestDispatcherpublic java.lang.String getContextPath()
getContextPath in interface javax.servlet.ServletContextpublic java.lang.String getInitParameter(java.lang.String name)
null if this parameter does not exist.
getInitParameter in interface javax.servlet.ServletContextname - Name of the initialization parameter to retrieve
String containing the value of the initialization
parameterServletConfig.getInitParameter(java.lang.String)
public boolean setInitParameter(java.lang.String name,
java.lang.String value)
public java.util.Enumeration<java.lang.String> getInitParameterNames()
getInitParameterNames in interface javax.servlet.ServletContextEnumeration of String
objects containing the names of the context's
initialization parametersServletConfig.getInitParameter(java.lang.String)public int getMajorVersion()
getMajorVersion in interface javax.servlet.ServletContextpublic int getMinorVersion()
getMinorVersion in interface javax.servlet.ServletContextpublic java.lang.String getMimeType(java.lang.String file)
null if
the MIME type cannot be determined.
getMimeType in interface javax.servlet.ServletContextfile - Filename for which to identify a MIME type
String specifying the file's MIME typepublic javax.servlet.RequestDispatcher getNamedDispatcher(java.lang.String name)
RequestDispatcher object that acts as a
wrapper for the named servlet.
getNamedDispatcher in interface javax.servlet.ServletContextname - Name of the servlet for which a dispatcher is requested
RequestDispatcher object
that acts as a wrapper for the named servlet,
or null if the ServletContext
cannot return a RequestDispatcherRequestDispatcher,
ServletContext.getContext(java.lang.String),
ServletConfig.getServletName()public java.lang.String getRealPath(java.lang.String path)
null.
getRealPath in interface javax.servlet.ServletContextpath - The path to the desired resource
String specifying the real path,
or null if the translation cannot be performedpublic javax.servlet.RequestDispatcher getRequestDispatcher(java.lang.String path)
RequestDispatcher instance that acts as a
wrapper for the resource at the given path. The path must begin
with a "/" and is interpreted as relative to the current context root.
getRequestDispatcher in interface javax.servlet.ServletContextpath - The path to the desired resource.
RequestDispatcher object
that acts as a wrapper for the resource
at the specified path, or null if
the ServletContext cannot return
a RequestDispatcherRequestDispatcher,
ServletContext.getContext(java.lang.String)
public java.net.URL getResource(java.lang.String path)
throws java.net.MalformedURLException
getResource in interface javax.servlet.ServletContextpath - The path to the desired resource
null if there is no resource
at that path
java.net.MalformedURLException - if the path is not given
in the correct formpublic java.io.InputStream getResourceAsStream(java.lang.String path)
InputStream. The
path must be specified according to the rules described under
getResource. If no such resource can be identified,
return null.
getResourceAsStream in interface javax.servlet.ServletContextpath - The path to the desired resource.
InputStream returned to the
servlet, or null if no resource
exists at the specified pathpublic java.util.Set getResourcePaths(java.lang.String path)
getResourcePaths in interface javax.servlet.ServletContextpath - Collection path
public java.lang.String getServerInfo()
getServerInfo in interface javax.servlet.ServletContextString containing at least the
servlet container name and version numberpublic javax.servlet.Servlet getServlet(java.lang.String name)
getServlet in interface javax.servlet.ServletContextpublic java.lang.String getServletContextName()
getServletContextName in interface javax.servlet.ServletContextpublic java.util.Enumeration getServletNames()
getServletNames in interface javax.servlet.ServletContextpublic java.util.Enumeration getServlets()
getServlets in interface javax.servlet.ServletContextpublic void log(java.lang.String message)
log in interface javax.servlet.ServletContextmessage - Message to be written
public void log(java.lang.Exception exception,
java.lang.String message)
log(String, Throwable) instead
log in interface javax.servlet.ServletContextexception - Exception to be reportedmessage - Message to be written
public void log(java.lang.String message,
java.lang.Throwable throwable)
log in interface javax.servlet.ServletContextmessage - Message to be writtenthrowable - Exception to be reportedpublic void removeAttribute(java.lang.String name)
removeAttribute in interface javax.servlet.ServletContextname - Name of the context attribute to be removed
public void setAttribute(java.lang.String name,
java.lang.Object value)
setAttribute in interface javax.servlet.ServletContextname - Attribute name to be boundvalue - New attribute value to be boundprotected StandardContext getContext()
protected java.util.Map getReadonlyAttributes()
protected void clearAttributes()
protected javax.servlet.ServletContext getFacade()
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