Use jsvc to embed java programs into linux services

Use jsvc to embed a java program into a linux service-Linux general technology-Linux programming and kernel information. The following is a detailed description. Start java programs as a service in linux

1. Install jsvc
There is a jsvc.tar.gz file under the bindirectory of tomcat. Go to the bin directory of tomcat.
# Tar xvfz jsvc.tar.gz
# Cd jsvc-src
# Sh support/buildconf. sh
# Chmod 755 configure
#./Configure -- with-java =/usr/local/java (change to your JDK location)
# Make

2. Compile the Service Startup class
Package com. sohu. jsvc. test;

Public class TestJsvc {

Public static void main (String args []) {
System. out. println ("execute main method! ");
}

Public void init () throws Exception {
System. out. println ("execute init method! ");
}

Public void init (String [] args) throws Exception {
System. out. println ("execute init (args) method ");
}

Public void start () throws Exception {
System. out. println ("execute start method! ");
}

Public void stop () throws Exception {
System. out. println ("execute stop method! ");
}

Public void destroy () throws Exception {
System. out. println ("execute destroy method! ");
}

}

The main method can be removed, but the init (String [] args), start (), stop (), destroy () methods cannot be fewer, the service first calls the init (String [] args) method at startup.
Call the start () method. when the service is stopped, the stop () method is called first, and then the destroy () method is called.

3. package this class into testjsvc. jar and put it in the/test directory.

4. write the script for starting the service myjsvc
#! /Bin/sh

# Myjsvc This shell script takes care of starting and stopping
#
# Chkconfig:-60 50
# Description: tlstat stat is a stat data daemon.
# Processname: myjsvc

# Source function library.
./Etc/rc. d/init. d/functions

RETVAL = 0
Prog = "MYJSVC"

# Jdk installation directory
JAVA_HOME =/usr/java/jdk1.5.0 _ 15
# Application directory
MYJSVC_HOME =/test
# Jsvc directory
DAEMON_HOME =/usr/local/tomcat5/bin/jsvc-src
# User
MYJSVC_USER = root

# For multi instances adapt those lines.
TMP_DIR =/var/tmp
PID_FILE =/var/run/tlstat. pid

# Program running is required jar package, commons-daemon.jar is not less
CLASSPATH = \
/Test/testjsvc. jar :\
/Usr/local/tomcat5/bin/commons-daemon.jar :\

Case "$1" in
Start)
#
# Start TlStat Data Serivce
#
$ DAEMON_HOME/jsvc \
-User $ MYJSVC_USER \
-Home $ JAVA_HOME \
-Djava. io. tmpdir = $ TMP_DIR \
-Wait 10 \
-Pidfile $ PID_FILE \
# The console output will be written to the tlstat. out file.
-Outfile $ MYJSVC_HOME/log/myjsvc. out \
-Errfile '& 1 '\
-Cp $ CLASSPATH \
# Service Startup
Com. sohu. jsvc. test. TestJsvc
#
# To get a verbose JVM
#-Verbose \
# To get a debug of jsvc.
#-Debug \
Exit $?
;;

Stop)
#
# Stop TlStat Data Serivce
#
$ DAEMON_HOME/jsvc \
-Stop \
-Pidfile $ PID_FILE \
Com. sohu. jsvc. test. TestJsvc
Exit $?
;;

*)
Echo "Usage myjsvc start/stop"
Exit 1 ;;
Esac

5. Copy the myjsvc file to the/etc/init. d/directory.
6. # chmod-c 777/etc/init. d/myjsvc
7. Add a service
# Chkconfig -- add myjsvc
# Chkconfig -- level 345 myjsvc on

8. Complete. Start the service.
# Service myjsvc start
You can see the following information in the/test/log/myjsvc. out file:
Execute init (args) method
Execute start method

# Service myjsvc stop
You will find the following information added to the/test/log/myjsvc. out file:
Execute stop method
Execute destroy method

The myjsvc service is automatically started when the system restarts.

Well, a simple liunx service is ready. You can add your business in the init (), start (), stop (), destroy () Methods of TestJsvc, do what you want to do.