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Installing Web Applications
A context is a name that gets mapped to a Web application. For example, the context of the
hello1
application is /hello1
. To install an application into Tomcat, you notify Tomcat that a new context is available. An installed application is not available after Tomcat is restarted. To permanently deploy an application you invoke the manager application deploy command (see Deploying Web Applications). Installing an application is the recommended operation when you are iteratively developing an application because you do not have to package the WAR and because you can quickly reload a modified application.You install an application into Tomcat with the manager application
install
command invoked via theAnt
install
task. TheAnt
install
task tells the manager application running at the location specified by theurl
attribute to install an application at the context specified by thepath
attribute. In addition, you must indicate the location of the Web application files. There are two ways to do this:To specify the directory path, you use the
war
attribute. The value of thewar
attribute can be a WAR file:jar:file:/
path/to/bar.war
!/
or an unpacked directoryfile:/
path/to/foo
.The
username
andpassword
attributes are discussed in Appendix B.You can specify the location of the Web application files via a configuration file with the
config
attribute:<install url="url
" path="mywebapp
" config="file:context.xml" username="username
" password="password
"/>The configuration file contains a context entry of the form:
The format of a context entry is described in the Server Configuration Reference at
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/config/context.html
. The context entry specifies the location of the Web application files through itsdocBase
attribute.
Note: The setting of the
docBase
attribute in the tutorial examples contains a path to the example build directory that's defined relative to the<
JWSDP_HOME
>/webapps/
directory:
../../jwstutorial13/examples/web/bookstore1/build/
This setting assumes that you have installed the tutorial in the same directory as the Java WSDP. If you install the tutorial in another directory, you will need to adjust thedocBase
attribute so that it reflects the path between thewebapps
directory and the example build directory. For example, if you install the tutorial in the Java WSDP install directory, thedocBase
attribute should be changed to ../jwstutorial13/examples/web/bookstore1/build/.
The tutorial example build files contain
Ant
install
andinstall-config
targets that invoke theAnt
install
task:<target name="install" description="Install web application" depends="build"> <install url="${url
}" path="${mywebapp
}" war="file:${build
}" username="${username
}" password="${password
}"/> </target> <target name="install-config" description="Install web application" depends="build"> <install url="${url
}" path="${mywebapp
}" config="file:{example.path}/context.xml" username="${username
}" password="${password
}"/> </target>To install the
hello1
application described in Web Application Life Cycle:
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All of the material in The Java(TM) Web Services Tutorial is copyright-protected and may not be published in other works without express written permission from Sun Microsystems.