This helped me to resolve java.lang.ClassNotFoundException. Bash command scans jar files in the folder and prints who contains given class.
|
1 |
find . -name '*.jar' -print0 | xargs -0 -I '{}' sh -c 'jar tf {} | grep Hello.class && echo {}' |
Tomcat 7 worked fine with Java 1.7 When I updated Java to 1.8 I got Unsupported major.minor version 52.0 error in Tomcat.
Solution: edit /etc/default/tomcat7 and set JAVA_HOME to Java 8 location. My variant is
|
1 |
JAVA_HOME=/usr/lib/jvm/java-8-oracle |
Adding local jar to maven repository.
Syntax:
|
1 |
mvn install:install-file -Dfile=<path-to-file> -DgroupId=<group-id> -DartifactId=<artifact-id> -Dversion=<version> -Dpackaging=<packaging> |
Example:
|
1 |
mvn install:install-file -Dfile=dans-dbf-lib-1.0.0-beta-10.jar -DgroupId=nl.knaw.dans.common -DartifactId=dans-dbf-lib -Dpackaging=jar -Dversion=1.0.0-beta-10 |
|
1 2 3 4 5 |
<dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.5.2</version> </dependency> |
The best article of Hadoop installation I found is http://codesfusion.blogspot.ru/2013/10/setup-hadoop-2x-220-on-ubuntu.html
I adopted it a little for my configuration: Ubuntu 14.04, Hadoop 2.2.0 single node, JDK 6. Not latest versions of Java and Hadoop but I had to reproduce existing production system.
My steps are:
JDK 6 and ssh:
$ sudo apt-get install oracle-java6-installer
$ sudo apt-get install python-software-properties
$ sudo add-apt-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java6-installer
$ sudo apt-get install ssh
Install JDK from repository (oracle-java7-installer from this ppa is JDK)
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer
Set this version to be used by default
sudo update-java-alternatives -s java-7-oracle
Set up environment variables
sudo apt-get install oracle-java7-set-default
Last week I spent some time to bring together Spring MVC, Apache Tiles, Hibernate+JPA with JTA.
My EAR application consists of two modules: WAR and EJB project.
WAR project: Spring MVC 3.1.1, Apache Tiles,Maven
EJB project: Hibernate through JPA, Spring 3.1.1, JBoss AS 7.1, JTA data source, Maven.
Configuration artifacts are:
Contains Spring MVC and Apache Tiles dependencies
Today I faced an interesting problem at work. It was JSP + Spring MVC 4 + Apache Tiles 2 + JBoss AS 7.1 application. JSP pages contain UTF-8 encoded Russian text encoding and should be displayed in UTF-8 in browser. I placed @Page directive in some pages:
Pages with above directive started to display non-English text perfectly fine. Others continued to show me unreadable rubbish instead (in default JBoss ISO-8859-1). So I already had a solution:
Solution 1 – modify every JSP page in the project to add proper @page directive.
From time to time I use JFreeChart library. This is a CandlestickChart sample to copy paste from here in future.
Maven dependencies in pom.xml
This post is about adding PostgreSQL driver and data source to JBoss Application Server.
Used versions are: JBoss AS 7.1.1, PostgreSQL 9.1.10 and postgresql-9.3-1100.jdbc41 driver.
Download postgresql jdbc driver here http://jdbc.postgresql.org/download.html
