Liferay have announced Liferay
7 Community Edition Milestone 4.They have conducted program called Liferay
7 Community Expedition Program so that interested people can join in
the program they can test and experience the Liferay 7 portal.
Liferay released liferay-portal-7.0-ce-m4 and we can
download portal server bundle and we can explore new featured and we can give feedback
to Liferay community so that it will improve the next official release of Liferay 7
The following is download URL for Liferay 7(liferay-portal-7.0-ce-m4)
The following link
for Liferay 7 Tomcat Bundle
Liferay 7 Bundle
consist following things
Tomcat server with deployed Liferay Portal
Data Directory this folder contains document library and hsql
database this is default database for Liferay.
The following
screen shows what Liferay Portal Server Bundle contains.
Liferay 7 Unsupported
Class Version Error with Java 1.6
When we run this bundle with java 1.6 versions (jdk/jre 1.6) then we will get Unsupported
Class Version Error.
Liferay 7 Portal (ROOT) was compiled and packaged with JDK/JRE 1.7 so when we use JAVA 1.6 then we can face Unsupported Class Version Error
Generally when we install Java in our machined we set the JAVA_HOME environment variable so when
we start Tomcat Server it will look for JAVA_HOME
variable and this will point to our JRE/JDK
home directory so that tomcat will use this and start the server successfully.
When we run Liferay
Portal 7 and our system have java 1.6 then portal won’t be started and it
will give above error.
Solution:
Install JDK 1.7
We need to download JDK1.7 and install into local machine
then we need to set JAVA_HOME system environment variable so that we can run
Liferay 7 portal.
Download JDK1.7 from following URL
Install JDK then it will be available in C:\Program
Files\Java
Set JAVA_HOME environment variables as follows
Variable Name
|
JAVA_HOME
|
Value
|
C:\Program Files\Java\jdk1.7.0_75
|
Scenario:
Assume we are running some applications and servers in JAVA 1.6 then we don’t want to change JAVA_HOME variable to java
1.7. But we wanted run Liferay 7 portal
This scenario we will use setenv.bat/setenv.sh files which is in Tomcat Server “bin”
directory there we will explicitly configure Java 1.7 only for this server so that whenever we start Liferay 7 bundle tomcat server then it
will use java 1.7.
Easy Steps:
- Download JDK 1.7 and install
- Copy JRE 1.7 and place in Liferay 7 Portal Tomcat server
- Open setenv.bat/setenv.sh then set java home
Download JDK 1.7 and install
Download JDK1.7 from following URL
Install JDK then it will be available in C:\Program
Files\Java
Copy JRE 1.7 and
place in Liferay 7 Portal Tomcat server
Now copy just jre7
folder from C:\Program Files\Java place this in tomcat server
Create one directory in liferay-portal-7.0-ce-m4\tomcat-7.0.42
say “win” then place jre7 in this
newly created directory.
The following screen
shows that JRE7 available in “win” directory
Open setenv.bat/setenv.sh then set java home
Now go to “tomcat-7.0.42\bin” directory open setenv.bat in editor if you are using
windows OS otherwise use setenv.sh
Replace the existed content with following content
set "JAVA_HOME=%CATALINA_HOME%/win/jre7"
set "CATALINA_OPTS=%CATALINA_OPTS% -Dfile.encoding=UTF8
-Djava.net.preferIPv4Stack=true
-Dorg.apache.catalina.loader.WebappClassLoader.ENABLE_CLEAR_REFERENCES=false
-Duser.timezone=GMT -Xmx1024m -XX:MaxPermSize=256m"
|
Finally save the file and start tomcat serve then Liferay
portal will start successfully by using jre7.
Complete basic configuration steps and you explore Liferay 7
portal.
Liferay default use there hsql database if you want to change to other database engine create
portal-ext.properties
file Liferay Home directory then configure database connection details.
Follow the post which is for Liferay 6.2 Installation same
you can replicate to Liferay 7.
Liferay 7 Portal Screen
Note:
When we install JDK 1.7 then default java will be latest
installed one even we explicitly create JAVA_HOME that point to JAVA1.6.
To make java 1.6 as your default JAVA for your system then
go to “C:\Windows\System32” look for java.exe,
javaw.exe and javaws.exe files and delete it so that your default java in
your machine will be java 1.6 that we set in the JAVA_HOME.
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