In addition to its other Java services, the WebLogic Server is a fully functional HTTP server that supports Java HTTP servlets. In general, each servlet must be registered with a virtual name in the config.xml file.

A servlet may be invoked directly, that is, may actually present HTML to the browser, or may be invoked indirectly from an HTML form when the user submits the form. When the WebLogic Server receives a request containing the registered virtual name of a servlet, it invokes the appropriate servlet's service() method. For more information on HTTP servlets, refer to the Programming WebLogic HTTP Servlets guide.

The HTTP servlet's service() method (which invokes either the servlet's doPost() or doGet() method, depending on the context) is invoked and passes an HttpServletRequest object containing the HTTP data sent from the browser. In the example packages described in “Using the Example Packages”, the client's query data is used in a transaction call to Tuxedo, and the response is built into the new HTML page.