org.apache.felix.http.samples.filter
Class TestServlet

java.lang.Object
  extended by javax.servlet.GenericServlet
      extended by javax.servlet.http.HttpServlet
          extended by org.apache.felix.http.samples.filter.TestServlet
All Implemented Interfaces:
Serializable, Servlet, ServletConfig

public class TestServlet
extends HttpServlet

See Also:
Serialized Form

Constructor Summary
TestServlet(String name)
           
 
Method Summary
 void destroy()
          Called by the servlet container to indicate to a servlet that the servlet is being taken out of service.
protected  void doGet(HttpServletRequest req, HttpServletResponse res)
          Called by the server (via the service method) to allow a servlet to handle a GET request.
 void init(ServletConfig config)
          Called by the servlet container to indicate to a servlet that the servlet is being placed into service.
 
Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service
 
Methods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, init, log, log
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TestServlet

public TestServlet(String name)
Method Detail

init

public void init(ServletConfig config)
          throws ServletException
Description copied from class: GenericServlet
Called by the servlet container to indicate to a servlet that the servlet is being placed into service. See Servlet.init(javax.servlet.ServletConfig).

This implementation stores the ServletConfig object it receives from the servlet container for later use. When overriding this form of the method, call super.init(config).

Specified by:
init in interface Servlet
Overrides:
init in class GenericServlet
Parameters:
config - the ServletConfig object that contains configutation information for this servlet
Throws:
ServletException - if an exception occurs that interrupts the servlet's normal operation
See Also:
UnavailableException

destroy

public void destroy()
Description copied from class: GenericServlet
Called by the servlet container to indicate to a servlet that the servlet is being taken out of service. See Servlet.destroy().

Specified by:
destroy in interface Servlet
Overrides:
destroy in class GenericServlet

doGet

protected void doGet(HttpServletRequest req,
                     HttpServletResponse res)
              throws ServletException,
                     IOException
Description copied from class: HttpServlet
Called by the server (via the service method) to allow a servlet to handle a GET request.

Overriding this method to support a GET request also automatically supports an HTTP HEAD request. A HEAD request is a GET request that returns no body in the response, only the request header fields.

When overriding this method, read the request data, write the response headers, get the response's writer or output stream object, and finally, write the response data. It's best to include content type and encoding. When using a PrintWriter object to return the response, set the content type before accessing the PrintWriter object.

The servlet container must write the headers before committing the response, because in HTTP the headers must be sent before the response body.

Where possible, set the Content-Length header (with the ServletResponse.setContentLength(int) method), to allow the servlet container to use a persistent connection to return its response to the client, improving performance. The content length is automatically set if the entire response fits inside the response buffer.

The GET method should be safe, that is, without any side effects for which users are held responsible. For example, most form queries have no side effects. If a client request is intended to change stored data, the request should use some other HTTP method.

The GET method should also be idempotent, meaning that it can be safely repeated. Sometimes making a method safe also makes it idempotent. For example, repeating queries is both safe and idempotent, but buying a product online or modifying data is neither safe nor idempotent.

If the request is incorrectly formatted, doGet returns an HTTP "Bad Request" message.

Overrides:
doGet in class HttpServlet
Parameters:
req - an HttpServletRequest object that contains the request the client has made of the servlet
res - an HttpServletResponse object that contains the response the servlet sends to the client
Throws:
ServletException - if the request for the GET could not be handled
IOException - if an input or output error is detected when the servlet handles the GET request
See Also:
ServletResponse.setContentType(java.lang.String)


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