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Created by Fang on January 04, 2013 08:00:37    Last update: January 04, 2013 08:00:37
This is a Maven POM that prints out some built-in project properties: <project xmlns="http://maven.apache.org/PO... Output: $ mvn validate [INFO] Scanning for projects.....
Created by Dr. Xi on April 19, 2012 10:10:08    Last update: April 19, 2012 10:11:06
The default servlet for Tomcat is declared in $CATALINA_HOME/conf/web.xml : <servlet> <servlet-name>default</servle... Therefore, static content is rendered by the default configuration unless you override it with your own definitions. If you want to allow directory listing, just change the listing parameter to true : <init-param> <param-name>listings</para... Change the welcome-file-list to display a default page in lieu of a directory listing: <welcome-file-list> <welcome-file>home.xhtml</... Welcome pages are defined at the Web application level.
Created by Fang on January 31, 2012 15:40:34    Last update: January 31, 2012 15:41:28
This is a simple Hello World application with Spring 3 MVC. Like the default Apache HTTPd welcome page, it displays " It works! " when successfully deployed. The sole purpose is to show the minimum elements needed to setup Spring 3 MVC. I use Maven since it's so much easier than downloading the dependencies manually. Directory layout: ./src ./src/main ./src/main/webapp ./src/... pom.xml : <?xml version="1.0" encoding="UTF-8"?> <project... WEB-INF/web.xml : <?xml version="1.0" encoding="UTF-8"?> <web-app... WEB-INF/applicationContext.xml (empty, but needed): <?xml version="1.0" encoding="UTF-8"?> <beans x... WEB-INF/spring-servlet.xml : <?xml version="1.0" encoding="UTF-8"?> <beans x... WEB-INF/jsp/home.jsp : <!DOCTYPE html> <html> <head> <title>H... Build with: mvn clean package The resulting webapp is target/springmvc.war .
Created by nogeek on December 29, 2011 13:31:44    Last update: December 29, 2011 14:29:13
Tomcat allows you to create multiple server instances for the same installation. The installation directory is identified as CATALINA_HOME , the instance directory is identified as CATALINA_BASE . Here are the steps: Create a base directory for the new instance, for example: /home/nogeek/tomcat1 . Create the subdirectories: mkdir -p /home/nogeek/tomcat/{bin,conf,logs,temp,w... Copy web.xml from the installation directory: cp $CATALINA_HOME/conf/web.xml /home/nogeek/tomcat... Copy logging.properties from the installation directory: cp $CATALINA_HOME/conf/logging.properties /home/no... Create server.xml under tomcat1/conf : <?xml version='1.0' encoding='utf-8'?> <Server ... Create script setenv.sh under tomcat1/bin : # Edit this file to set custom options # Tomcat... Copy startup.sh and shutdown.sh from the installation directory. Add the following two lines to the beginning of each: CATALINA_BASE=/home/nogeek/tomcat1 export CATAL... Create a soft link for catalina.sh in tomcat1/bin : $ ln -s ~/apache-tomcat-7.0.22/bin/catalina.sh cat...
Created by mee2 on November 20, 2011 21:23:02    Last update: November 20, 2011 21:23:02
By default, alfresco.log is located in the current working directory (where you started Tomcat from). But you can override the default location with a custom lo4g.properties file: Create file $TOMCAT_HOME/shared/classes/alfresco/extension/custom-log4j.properties with contents: log4j.rootLogger=error, File log4j.appender... The Alfresco log will be relocated to /home/alfresco/logs (but somehow s small portion remains in the CWD). This works only when the shared.loader property in conf/catalina.properties includes ${catalina.home}/shared/classes .
Created by mee2 on November 20, 2011 21:00:58    Last update: November 20, 2011 21:10:22
Alfresco community-4.0.b has only 64-bit installer for Linux. These are the steps to manually install it on 32-bit Ubuntu Linux. Download alfresco-community-4.0.b.zip from http://wiki.alfresco.com/wiki/Download_and_Install_Alfresco . Install dependencies: $ sudo apt-get install imagemagick swftools postgr... Note: swftools was not available as a package for Ubuntu 11.10, I installed it with source . Create alfresco database: $ sudo bash [sudo] password for alfresco: ... Copy everything from the Alfresco web-server folder to Tomcat: $ cp -R alfresco-community-4.0.b/web-server/* apac... Edit $TOMCAT_HOME/conf/catalina.properties , change shared.loader to: shared.loader=${catalina.base}/shared/classes,${ca... Edit Tomcat conf file conf/server.xml , add URIEncoding="UTF-8" : <Connector port="8080" protocol="HTTP/1.1" ... Customize alfresco-global.properties : $ mv shared/classes/alfresco-global.properties.sam... Edit shared/classes/alfresco-global.properties : ############################### ## Common A... Copy keystore files from alfresco.war : expand alfresco.war , grab the whole keystore directory from...
Created by voodoo on April 14, 2011 13:16:18    Last update: April 14, 2011 13:17:48
From Fedora Project wiki : A security context , or security label , is the mechanism used by SELinux to classify resources, such as processes and files, on a SELinux-enabled system. This context allows SELinux to enforce rules for how and by whom a given resource should be accessed. A security context is typically shown as a string consisting of three or four words. Each word specifies a different component of the security context, namely, the user , role , type , and level of that file or process . Each word is separated by a colon. Use the -Z switch to display security context info. Display security context for Apache files: $ ls -Z /var/www/ drwxr-xr-x. root root system_... Display security for files under...
Created by voodoo on April 13, 2011 13:47:34    Last update: April 13, 2011 13:49:20
You get "permission denied" error from Apache HTTPD for a page. And you checked file/directory permissions (the whole directory path, not just the file) and everything in httpd.conf . If everything seemed right, then SELinux may be blocking the access. Open /var/log/httpd/error_log , you may see a line like this: [Wed Apr 13 15:50:35 2011] [notice] SELinux poli... These are the steps to fix: If the directory resides in a user home directory: # setsebool -P httpd_read_user_content 1 Create a policy package from the audit log: # grep httpd /var/log/audit/audit.log | audit2allo... Apply the policy package just created # semodule -i mypol.pp Restart apache httpd: # apachectl restart
Created by Fang on March 23, 2010 03:50:11    Last update: August 18, 2010 21:59:52
This is a simple web application with a single servlet and a single JSP page. It is intended to be a test bed for JSTL tags. You may want to store all syntax, rules, and exceptions in your head, but in my opinion nothing beats a simple test program that allows you play with it all you want. So here it is (build with Maven ). Prerequisites: Maven: http://maven.apache.org/ . You don't need any prior knowledge of Maven, but you need to install the binary. JBoss: http://jboss.org/jbossas/downloads/ , or Tomcat: http://tomcat.apache.org/ if you don't run the SQL tests. You need to know how to deploy a web application (shh! Don't tell your boss it's just copying a file to the deployment folder). Steps: The directory...
Created by Fang on April 01, 2010 22:24:58    Last update: April 02, 2010 02:49:38
In this note I'll show you how to create and package a JSP custom tag. The purpose of this tag is to display a random splash image for a home page, among a set of images. We should be able to add or delete candidate splash images from the WAR archive without the need to change the JSP. This is the intended use of the tag: <%@ taglib uri="http://custom.tag.com/demo" prefix... In the above example you provide a set of images named splash*.png (e.g., splash1.png, spalsh2.png, ...), and the tag will pick a random one to display when the JSP is rendered. Let's get started. I'll use Maven for this purpose. Create the standard Maven directory structure ./pom.xml ./src ./src/main ./src/main/jav... pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0"... SplashTag.java package tagdemo; import java.util.ArrayList......
Created by Fang on September 07, 2009 16:39:37    Last update: September 07, 2009 18:43:04
It's easiest to use the archetype plugin to start a new Maven project. I'll use struts 1 as example since it's not in the built-in archetypes for archetype:generate . Generate a simple webapp with archetype:generate : C:\work\maven>mvn archetype:generate -DarchetypeAr... It generates a directory structure like this: struts1app struts1app/pom.xml struts1app/src... with a simple POM: <project xmlns="http://maven.apache.org/POM/4.0.0"... Create settings.xml in $HOME/.m2 , add Java.net repository for Java EE dependencies: <?xml version="1.0" encoding="UTF-8"?> <setting... Add Java EE and Struts dependencies in pom.xml . Note that the Java EE dependency has scope provided , meaning that the web app container provides the jars, therefore we don't need to bundle them with our war fie. <project xmlns="http://maven.apache.org/POM/4.0.0"... Create a directory named java under main , create the Struts form and...
Created by Dr. Xi on December 12, 2007 20:30:01    Last update: December 12, 2007 20:32:23
This is a script to tail a log file through the web browser. It uses AJAX, apache web server, mod_python, UNIX utilities tail (requires the --lines switch) and wc . The log file may reside on the web server or any other host accessible from the web server through SSH. Although it's written in python, it should be easy to port to other languages such as Perl. Apache httpd.conf : LoadModule python_module modules/mod_python.so ... Python script: import time, os from os.path import basename ...