org.apache.catalina.ssi

## Class SSIServlet

- java.lang.Object
- - javax.servlet.GenericServlet
  - - javax.servlet.http.HttpServlet
    - - org.apache.catalina.ssi.SSIServlet

- All Implemented Interfaces:
    Serializable, Servlet, ServletConfig

      public class SSIServlet
      extends HttpServlet

  Servlet to process SSI requests within a webpage. Mapped to a path from within web.xml.
  Author:
    Bip Thelin, Amy Roh, Dan Sandberg, David Becker
  See Also:
    Serialized Form

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected boolean` | `allowExec` Allow exec (normally blocked for security)
    `protected boolean` | `buffered` Should the output be buffered.
    `protected int` | `debug` Debug level for this servlet.
    `protected Long` | `expires` Expiration time in seconds for the doc.
    `protected String` | `inputEncoding` Input encoding.
    `protected boolean` | `isVirtualWebappRelative` virtual path can be webapp-relative
    `protected String` | `outputEncoding` Output encoding.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SSIServlet()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `doGet(HttpServletRequest req, HttpServletResponse res)` Process and forward the GET request to our `requestHandler()`*
    `void` | `doPost(HttpServletRequest req, HttpServletResponse res)` Process and forward the POST request to our `requestHandler()`.
    `void` | `init()` Initialize this servlet.
    `protected void` | `processSSI(HttpServletRequest req, HttpServletResponse res, URL resource)`
    `protected void` | `requestHandler(HttpServletRequest req, HttpServletResponse res)` Process our request and locate right SSI command.

    - ### Methods inherited from class javax.servlet.http.HttpServlet

      `doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service`

    - ### Methods inherited from class javax.servlet.GenericServlet

      `destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### debug

          protected int debug

      Debug level for this servlet.

    - #### buffered

          protected boolean buffered

      Should the output be buffered.

    - #### expires

          protected Long expires

      Expiration time in seconds for the doc.

    - #### isVirtualWebappRelative

          protected boolean isVirtualWebappRelative

      virtual path can be webapp-relative

    - #### inputEncoding

          protected String inputEncoding

      Input encoding. If not specified, uses platform default

    - #### outputEncoding

          protected String outputEncoding

      Output encoding. If not specified, uses platform default

    - #### allowExec

          protected boolean allowExec

      Allow exec (normally blocked for security)

  - ### Constructor Detail

    - #### SSIServlet

          public SSIServlet()

  - ### Method Detail

    - #### init

          public void init()
                    throws ServletException

      Initialize this servlet.
      Overrides:
        `init` in class `GenericServlet`
      Throws:
        `ServletException` - if an error occurs

    - #### doGet

          public void doGet(HttpServletRequest req,
                   HttpServletResponse res)
                     throws IOException,
                            ServletException

      Process and forward the GET request to our `requestHandler()`*
      Overrides:
        `doGet` in class `HttpServlet`
      Parameters:
        `req` - a value of type 'HttpServletRequest'
        `res` - a value of type 'HttpServletResponse'
      Throws:
        `IOException` - if an error occurs
        `ServletException` - if an error occurs
      See Also:
        `ServletResponse.setContentType(java.lang.String)`

    - #### doPost

          public void doPost(HttpServletRequest req,
                    HttpServletResponse res)
                      throws IOException,
                             ServletException

      Process and forward the POST request to our `requestHandler()`.
      Overrides:
        `doPost` in class `HttpServlet`
      Parameters:
        `req` - a value of type 'HttpServletRequest'
        `res` - a value of type 'HttpServletResponse'
      Throws:
        `IOException` - if an error occurs
        `ServletException` - if an error occurs
      See Also:
        `ServletOutputStream`, `ServletResponse.setContentType(java.lang.String)`

    - #### requestHandler

          protected void requestHandler(HttpServletRequest req,
                            HttpServletResponse res)
                                 throws IOException

      Process our request and locate right SSI command.
      Parameters:
        `req` - a value of type 'HttpServletRequest'
        `res` - a value of type 'HttpServletResponse'
      Throws:
        `IOException` - an IO error occurred

    - #### processSSI

          protected void processSSI(HttpServletRequest req,
                        HttpServletResponse res,
                        URL resource)
                             throws IOException

      Throws:
        `IOException`

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