JAVA服务通用启动脚本

通用java服务端程序启动脚本，免去nohup java -jar xxx.jar &的烦恼

#!/bin/bash

# 程序包目录
APP_HOME=$(readlink -f "$(dirname "$0")")
# 程序包名
APP_NAME=`echo ${APP_HOME}/*.jar`
# 程序日志文件目录
APP_LOG_PATH=${APP_HOME}/logs/
# 程序日志文件名
APP_LOG_NAME=show.log
# 程序启动参数
JAVA_OPTIONS="-Xms128m -Xmx128m -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintHeapAtGC -Xloggc:./logs/app-gc-%t.log -XX:+UseG1GC -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=5 -XX:GCLogFileSize=50M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=./logs/app-oom-dump.hprof  "
# 关闭程序等待时间（单位：秒）
SHUTDOWN_WAIT_TIME=10

if [ ! -d  $APP_LOG_PATH ];then
        mkdir -p $APP_LOG_PATH
fi

if [ ! -f  $APP_LOG_PATH$APP_LOG_NAME ];then
        touch  $APP_LOG_PATH$APP_LOG_NAME
fi

# 使用说明, 用来提示输入参数
usage() {
        echo "Usage: sh 执行脚本.sh [start|stop|restart|status]"
        exit 1
}

# 检查程序是否运行中
is_exist() {
        pid=` ps -ef | grep java | grep $APP_NAME | grep -v grep | awk '{print $2}' `
        if [ -z "${pid}" ]; then
                return 1
        else
                return 0
        fi
}

# 启动程序
start() {
        is_exist

        if [ $? -eq "0" ]; then
                echo -e "\n>>> ${APP_NAME} is already running. PID=${pid}<<<"

        else

                nohup java $JAVA_OPTIONS -jar $APP_NAME > $APP_LOG_PATH$APP_LOG_NAME 2>&1 &

                is_exist

                if [ $? -eq "0" ]; then
                        echo -e "\n>>> ${APP_NAME} started. PID=${pid}<<<"
                fi
        fi
}

# 停止程序
stop() {
        is_exist

        if [ $? -eq "0" ]; then
                kill $pid

                let kwait=$SHUTDOWN_WAIT_TIME
                count=0
                until [ `ps -p $pid | grep -c $pid` = '0' ] || [ $count -gt $kwait ]
                do
                        echo -n -e "\n\e[00;31mwaiting for processes to exit\e[00m"
                        sleep 1
                        let count=$count+1
                done

                if [ $count -gt $kwait ]; then
                        echo -n -e "\n\e[00;31mkilling processes didn't stop after $SHUTDOWN_WAIT_TIME seconds\e[00m"
                        kill -9 $pid
                fi

                echo -e "\n${APP_NAME} stoped."
        else
                echo -e "\n${APP_NAME} is not running"
        fi
}

# 查看状态
status() {
        is_exist

        if [ $? -eq "0" ]; then
                echo -e "\n${APP_NAME} is running. PID=${pid}"
        else
                echo -e "\n${APP_NAME} is not running."
        fi
}

# 重启
restart() {
        stop

        sleep 3

        start
}

# 选项
case "$1" in
        "start")
                start
                ;;
        "stop")
                stop
                ;;
        "status")
                status
                ;;
        "restart")
                restart
                ;;
        *)
                usage
                ;;
esac