Invoking a Servlet by Alternate Means

You can call a servlet deployed to GlassFish Server by using a URL in a browser or embedded as a link in an HTML or JSP file. The format of a servlet invocation URL is as follows:

http://server:port/context-root/servlet-mapping?name=value

The following table describes each URL section.

Table 6-1 URL Fields for Servlets Within an Application

URL element	Description
`server:port`	The IP address (or host name) and optional port number. To access the default web module for a virtual server, specify only this URL section. You do not need to specify the `context-root` or servlet-name unless you also wish to specify name-value parameters.
`context-root`	For an application, the context root is defined in the `context-root` element of the `application.xml`, `sun-application.xml`, or `sun-web.xml` file. For an individually deployed web module, the context root is specified during deployment. For both applications and individually deployed web modules, the default context root is the name of the WAR file minus the `.war` suffix.
`servlet-mapping`	The `servlet-mapping` as configured in the `web.xml` file.
`?name=value...`	Optional request parameters.

Example 6-1 Invoking a Servlet With a URL

In this example, localhost is the host name, MortPages is the context root, and calcMortgage is the servlet mapping.

http://localhost:8080/MortPages/calcMortgage?rate=8.0&per=360&bal=180000

Example 6-2 Invoking a Servlet From Within a JSP File

To invoke a servlet from within a JSP file, you can use a relative path. For example:

<jsp:forward page="TestServlet"/><jsp:include page="TestServlet"/>

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	Oracle GlassFish Server 3.1 Administration Guide