spring 项目 jar 方式部署情况的 部署脚本

#!/bin/sh
## java env
export JAVA_HOME=/usr/local/jdk/jdk1.8.0_101
export JRE_HOME=$JAVA_HOME/jre

API_NAME=api
JAR_NAME=$API_NAME\.jar
#PID 代表是PID文件
PID=$API_NAME\.pid

#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
}

#检查程序是否在运行
is_exist(){
pid=`ps -ef|grep $JAR_NAME|grep -v grep|awk '{print $2}' `
#如果不存在返回1，存在返回0
if [ -z "${pid}" ]; then
return 1
else
return 0
fi
}

#启动方法
start(){
is_exist
if [ $? -eq "0" ]; then
echo ">>> ${JAR_NAME} is already running PID=${pid} <<<"
else
nohup $JRE_HOME/bin/java -Xms256m -Xmx512m -jar $JAR_NAME >/dev/null 2>&1 &
echo $! > $PID
echo ">>> start $JAR_NAME successed PID=$! <<<"
fi
}

#停止方法
stop(){
#is_exist
pidf=$(cat $PID)
#echo "$pidf"
echo ">>> api PID = $pidf begin kill $pidf <<<"
kill $pidf
rm -rf $PID
sleep 2
is_exist
if [ $? -eq "0" ]; then
echo ">>> api 2 PID = $pid begin kill -9 $pid <<<"
kill -9 $pid
sleep 2
echo ">>> $JAR_NAME process stopped <<<"
else
echo ">>> ${JAR_NAME} is not running <<<"
fi
}

#输出运行状态
status(){
is_exist
if [ $? -eq "0" ]; then
echo ">>> ${JAR_NAME} is running PID is ${pid} <<<"
else
echo ">>> ${JAR_NAME} is not running <<<"
fi
}

#重启
restart(){
stop
start
}

#根据输入参数，选择执行对应方法，不输入则执行使用说明
case "$1" in
"start")
start
;;
"stop")
stop
;;
"status")
status
;;
"restart")
restart
;;
*)
usage
;;
esac
exit 0