Install Apache Tika on Debian

1. 1. Update java (your current java should be java7 or higher, if its already updated proceed to step 2.

   echo “deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main” | tee /etc/apt/sources.list.d/webupd8team-java.list

   echo “deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main” | tee -a /etc/apt/sources.list.d/webupd8team-java.list

   apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv-keys EEA14886

   apt-get update

   apt-get install oracle-java8-installer

   now check the java version: eg. java -version

   I should show like 

   java version “1.8.0_25”

   Java(TM) SE Runtime Environment (build 1.8.0_25-b17)

   Java HotSpot(TM) 64-Bit Server VM (build 25.25-b02, mixed mode)

   If its still an old version you can follow the link below

   https://www.digitalocean.com/community/tutorials/how-to-install-java-on-ubuntu-with-apt-get

   2. Donwload Tika

      a. Download: eg. wget http://mirror.sdunix.com/apache/tika/tika-1.6-src.zip

      b. Unzip:    eg. unzip tika-1.6-src.zip

   3. Intall Maven 2 for our Tika build system

      a. Download: eg. wget http://psg.mtu.edu/pub/apache/maven/maven-3/3.2.3/binaries/apache-maven-3.2.3-bin.zip

      b. Unzip: eg. unzip apache-maven-3.2.3-bin.zip

      c. Follow the installation guide here-> http://maven.apache.org/download.cgi#Installation

   4. Install Tika

      a. Enter to tika base directory eg. cd tika-1.6

      b. build tika using maven2: eg mvn install

   5. Finish. Now you can test tika 

      a. From the base directory of tika you can do

         java -jar tika-app/target/tika-app-1.6.jar -j [file]  

         The output should be a json encoded metadata of a file

         For some options you can see http://tika.apache.org/1.6/gettingstarted.html or java -jar tika-app/target/tika-app-1.6.jar –help