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To generate the

web.xml

file from the Java source, you need to use XDoclet s

webdoclet

task, as shown:

destdir="${WEBINF}" />

The

webdoclet

task is used in a Ant target called

generateDD

. The output directory

of is specified with the

webdoclet

task s

destdir

attribute

webdoclet

destdir="${dest}"

. The dest property is set in the

build.properties

file

(/tutorials/J2EEXdoclet/webdoclet/web/WEB INF).

The input files for the

webdoclet

task are specified with a fileset:

fileset

dir="${src}"

. The src property is set in the

build.properties

file

/tutorials/webdoclet/src

). The fileset uses a filter so that only the classes ending in

Servlet will be selected as in BasicServlet:

name="**/*Servlet.java"/>

. This is to avoid processing all of the source code

instead of just the source code that uses XDoclet tags.

The

deploymentdescriptor

subtask specifies the location for the generated

deployment descriptor using the destdir attribute:

deploymentdescriptor ...

destdir="${WEBINF}"

. The

deploymentdescriptor

is the subtask that actually

generates the

web.xml

file.

Running Ant

To run the sample Ant build file, go to the directory that contains the project files. To

run Ant, navigate to the

/tutorials/J2EEXdoclet/webdoclet

directory and type:

ant

deploy

As I stated earlier, Ant will locate

build.xml

, the default name for the build file. (You may

have to adjust your

build.properties

files.) For this example, here is the command line

output you should expect:

C:\tutorials\J2EEXdoclet\webdoclet>ant deploy

Buildfile: build.xml

init:

[mkdir] Created dir: C:\tutorials\J2EEXdoclet\webdoclet\tmp\war

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Enhance J2EE component reuse with XDoclets

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