servletrequest.java

业界著名的tomcat服务器的最新6.0的源代码。

    public String getScheme();
    
    
    

    /**
     * Returns the host name of the server to which the request was sent.
     * It is the value of the part before ":" in the <code>Host</code>
     * header value, if any, or the resolved server name, or the server IP address.
     *
     * @return		a <code>String</code> containing the name 
     *			of the server
     */

    public String getServerName();
    
    
    

    /**
     * Returns the port number to which the request was sent.
     * It is the value of the part after ":" in the <code>Host</code>
     * header value, if any, or the server port where the client connection
     * was accepted on.
     *
     * @return		an integer specifying the port number
     *
     */

    public int getServerPort();
    
    
    
    /**
     * Retrieves the body of the request as character data using
     * a <code>BufferedReader</code>.  The reader translates the character
     * data according to the character encoding used on the body.
     * Either this method or {@link #getInputStream} may be called to read the
     * body, not both.
     * 
     *
     * @return					a <code>BufferedReader</code>
     *						containing the body of the request	
     *
     * @exception UnsupportedEncodingException 	if the character set encoding
     * 						used is not supported and the 
     *						text cannot be decoded
     *
     * @exception IllegalStateException   	if {@link #getInputStream} method
     * 						has been called on this request
     *
     * @exception IOException  			if an input or output exception occurred
     *
     * @see 					#getInputStream
     *
     */

    public BufferedReader getReader() throws IOException;
    
    
    

    /**
     * Returns the Internet Protocol (IP) address of the client 
     * or last proxy that sent the request.
     * For HTTP servlets, same as the value of the 
     * CGI variable <code>REMOTE_ADDR</code>.
     *
     * @return		a <code>String</code> containing the 
     *			IP address of the client that sent the request
     *
     */
    
    public String getRemoteAddr();
    
    
    

    /**
     * Returns the fully qualified name of the client
     * or the last proxy that sent the request.
     * If the engine cannot or chooses not to resolve the hostname 
     * (to improve performance), this method returns the dotted-string form of 
     * the IP address. For HTTP servlets, same as the value of the CGI variable 
     * <code>REMOTE_HOST</code>.
     *
     * @return		a <code>String</code> containing the fully 
     *			qualified name of the client
     *
     */

    public String getRemoteHost();
    
    
    

    /**
     *
     * Stores an attribute in this request.
     * Attributes are reset between requests.  This method is most
     * often used in conjunction with {@link RequestDispatcher}.
     *
     * <p>Attribute names should follow the same conventions as
     * package names. Names beginning with <code>java.*</code>,
     * <code>javax.*</code>, and <code>com.sun.*</code>, are
     * reserved for use by Sun Microsystems.
     *<br> If the object passed in is null, the effect is the same as
     * calling {@link #removeAttribute}.
     * <br> It is warned that when the request is dispatched from the
     * servlet resides in a different web application by
     * <code>RequestDispatcher</code>, the object set by this method
     * may not be correctly retrieved in the caller servlet.
     *
     *
     * @param name			a <code>String</code> specifying 
     *					the name of the attribute
     *
     * @param o				the <code>Object</code> to be stored
     *
     */

    public void setAttribute(String name, Object o);
    
    
    

    /**
     *
     * Removes an attribute from this request.  This method is not
     * generally needed as attributes only persist as long as the request
     * is being handled.
     *
     * <p>Attribute names should follow the same conventions as
     * package names. Names beginning with <code>java.*</code>,
     * <code>javax.*</code>, and <code>com.sun.*</code>, are
     * reserved for use by Sun Microsystems.
     *
     *
     * @param name			a <code>String</code> specifying 
     *					the name of the attribute to remove
     *
     */

    public void removeAttribute(String name);
    
    
    

    /**
     *
     * Returns the preferred <code>Locale</code> that the client will 
     * accept content in, based on the Accept-Language header.
     * If the client request doesn't provide an Accept-Language header,
     * this method returns the default locale for the server.
     *
     *
     * @return		the preferred <code>Locale</code> for the client
     *
     */

    public Locale getLocale();
    
    
    

    /**
     *
     * Returns an <code>Enumeration</code> of <code>Locale</code> objects
     * indicating, in decreasing order starting with the preferred locale, the
     * locales that are acceptable to the client based on the Accept-Language
     * header.
     * If the client request doesn't provide an Accept-Language header,
     * this method returns an <code>Enumeration</code> containing one 
     * <code>Locale</code>, the default locale for the server.
     *
     *
     * @return		an <code>Enumeration</code> of preferred 
     *                  <code>Locale</code> objects for the client
     *
     */

    public Enumeration getLocales();
    
    
    

    /**
     *
     * Returns a boolean indicating whether this request was made using a
     * secure channel, such as HTTPS.
     *
     *
     * @return		a boolean indicating if the request was made using a
     *                  secure channel
     *
     */

    public boolean isSecure();
    
    
    

    /**
     *
     * Returns a {@link RequestDispatcher} object that acts as a wrapper for
     * the resource located at the given path.  
     * A <code>RequestDispatcher</code> object can be used to forward
     * a request to the resource or to include the resource in a response.
     * The resource can be dynamic or static.
     *
     * <p>The pathname specified may be relative, although it cannot extend
     * outside the current servlet context.  If the path begins with 
     * a "/" it is interpreted as relative to the current context root.  
     * This method returns <code>null</code> if the servlet container
     * cannot return a <code>RequestDispatcher</code>.
     *
     * <p>The difference between this method and {@link
     * ServletContext#getRequestDispatcher} is that this method can take a
     * relative path.
     *
     * @param path      a <code>String</code> specifying the pathname
     *                  to the resource. If it is relative, it must be
     *                  relative against the current servlet.
     *
     * @return          a <code>RequestDispatcher</code> object
     *                  that acts as a wrapper for the resource
     *                  at the specified path, or <code>null</code>
     *                  if the servlet container cannot return a
     *                  <code>RequestDispatcher</code>
     *
     * @see             RequestDispatcher
     * @see             ServletContext#getRequestDispatcher
     *
     */

    public RequestDispatcher getRequestDispatcher(String path);
    
    
    

    /**
     * 
     * @deprecated 	As of Version 2.1 of the Java Servlet API,
     * 			use {@link ServletContext#getRealPath} instead.
     *
     */

    public String getRealPath(String path);
    
    
    /**
     * Returns the Internet Protocol (IP) source port of the client
     * or last proxy that sent the request.
     *
     * @return	an integer specifying the port number
     *
     * @since 2.4
     */    
    public int getRemotePort();


    /**
     * Returns the host name of the Internet Protocol (IP) interface on
     * which the request was received.
     *
     * @return	a <code>String</code> containing the host
     *		name of the IP on which the request was received.
     *
     * @since 2.4
     */
    public String getLocalName();

    /**
     * Returns the Internet Protocol (IP) address of the interface on
     * which the request  was received.
     *
     * @return	a <code>String</code> containing the
     *		IP address on which the request was received. 
     *
     * @since 2.4
     *
     */       
    public String getLocalAddr();


    /**
     * Returns the Internet Protocol (IP) port number of the interface
     * on which the request was received.
     *
     * @return an integer specifying the port number
     *
     * @since 2.4
     */
    public int getLocalPort();

}