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JAVA

Slapping Together A JSP Development Environment
By: icarus, (c) Melonfire
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    2001-03-05

    Table of Contents:
  • Slapping Together A JSP Development Environment
  • Essential Software
  • One Tomcat, Standing Alone
  • Connecting The Dots
  • Same Story, Different OS
  • Putting It In Context
  • Making The Grade

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    Slapping Together A JSP Development Environment - Same Story, Different OS


    (Page 5 of 7 )

    If you're using Linux, the procedure is almost identical. First, install the Linux version of the JDK to a directory of your choice (I used /usr/local/jdk/) and then follow that up by installing the Tomcat server (/usr/local/tomcat/). You shouldn't usually need to install Apache, since that comes standard on most Linux distros - however, you should check and ensure that the version you have supports loadable modules. You can verify this by typing

    $ /usr/local/apache/bin/httpd -l (assuming that Apache has been installed to /usr/local/apache/)

    and viewing the resulting output - if you see the line

    mod_so.c

    in the list of compiled-in modules, you're good to go. If not, you'll need to recompile your Apache server with support for loadable modules.

    You first need to test whether the Tomcat server is working in stand-alone mode. First set the environment variables JAVA_HOME and TOMCAT_HOME to the appropriate locations, like this:

    $ JAVA_HOME=/usr/local/jdk; export JAVA_HOME $ TOMCAT_HOME=/usr/local/tomcat; export TOMCAT_HOME

    Add the Java interpreter to your PATH.

    $ PATH=$PATH:/usr/local/jdk/bin; export PATH

    And then run Tomcat using the shell script in the /usr/local/tomcat/bin directory

    $ /usr/local/tomcat/bin/tomcat.sh start

    Tomcat should start up, displaying messages similar to the ones above.

    In order to test your Tomcat installation, point your browser to http://localhost:8080/ and try browsing through the various JSP examples available on the default page at http://localhost:8080/examples/jsp/

    Alternatively, you could create a simple JSP file called "hello.jsp" in the directory /usr/local/tomcat/webapps/examples/jsp/, containing the following JSP code:

    <html> <body> <% out.println("Waiter, can I have a cup of Java, please?"); %> </body> </html>

    And now, when you point your browser to http://localhost:8080/examples/jsp/hello.jsp, you should be presented with a page which looks like this:

    <html> <body> Waiter, can I have a cup of Java, please? </body> </html>

    Next, you have to set up Apache to communicate with Tomcat via mod_jserv. Install the mod_jserv.so module that you downloaded (you can either get the source and compile it, or use one of the pre-built RPMs) and then edit Apache's "httpd.conf" file to insert the following lines into it:

    LoadModule jserv_module modules/mod_jserv.so

    If you're using an RPM, this may be done for you automatically.

    And then add the following line to the end of "httpd.conf":

    Include /usr/local/tomcat/conf/tomcat-apache.conf

    Shut down Apache, start Tomcat, and then restart Apache. If all has gone well, you should now be able to browse to http://localhost/examples/jsp/hello.jsp and view the JSP document correctly.

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