一套通过输入参数来启动或停止jar的脚本

#!/bin/sh
# ./circles-admin-server.sh start 启动 stop 停止 restart 重启 status 状态
# 定义应用程序名称 AppName
AppName=/opt/circles-admin/server/jar/circles-admin.jar

# 配置JVM参数，包括堆内存大小、元空间大小等配置
JVM_OPTS="-Dname=$AppName  -Duser.timezone=Asia/Shanghai -Xms512m -Xmx1024m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError -XX:+PrintGCDateStamps  -XX:+PrintGCDetails -XX:NewRatio=1 -XX:SurvivorRatio=30 -XX:+UseParallelGC -XX:+UseParallelOldGC"
# shellcheck disable=SC2034
# shellcheck disable=SC2006
# 获取 APP_HOME 路径信息（此处使用反引号表示执行命令）
APP_HOME=`/opt/circles-admin`
# springboot启动参数
# shellcheck disable=SC2034
# 配置 Spring Boot 启动参数，指定激活的 Spring profile
SPRING_OPTS="--spring.profiles.active=test"

if [ "$1" = "" ];
then
    # shellcheck disable=SC2039
    # 如果未输入操作名，则提示用户输入 {start|stop|restart|status}
    echo -e "\033[0;31m 未输入操作名 \033[0m  \033[0;34m {start|stop|restart|status} \033[0m"
    exit 1
fi

if [ "$AppName" = "" ];
then
    # shellcheck disable=SC2039
    # 如果未设置应用名，则输出“未输入应用名”提示信息并退出脚本。
    echo -e "\033[0;31m 未输入应用名 \033[0m"
    exit 1
fi

# shellcheck disable=SC2112
function start()
{
    # shellcheck disable=SC2006
    # shellcheck disable=SC2009
    PID=`ps -ef |grep java|grep $AppName|grep -v grep|awk '{print $2}'`

    if [ x"$PID" != x"" ]; then
        # 判断 PID 是否为空，若非空则输出进程正在运行。否则启动新的Java进程。
        echo "$AppName is running..."
    else
         # 使用 nohup命令后台运行 Java 应用程序，并将输出定向到/dev/null文件。
        nohup java "$JVM_OPTS" -jar $AppName $SPRING_OPTS > /dev/null 2>&1 &
        echo "Start $AppName success..."
    fi
}

# shellcheck disable=SC2112
function stop()
{
    echo "Stop $AppName"

    PID=""
    query(){
        # shellcheck disable=SC2006
        # shellcheck disable=SC2009
        PID=`ps -ef |grep java|grep $AppName|grep -v grep|awk '{print $2}'`
    }

    query
    if [ x"$PID" != x"" ]; then
        kill -TERM "$PID"
        echo "$AppName (pid:$PID) exiting..."
        while [ x"$PID" != x"" ]
        do
            sleep 1
            query
        done
        echo "$AppName exited."
    else
        echo "$AppName already stopped."
    fi
}

# shellcheck disable=SC2112
function restart()
{
    stop
    sleep 2
    start
}

# shellcheck disable=SC2112
function status()
{
    # shellcheck disable=SC2006
    # shellcheck disable=SC2126
    # shellcheck disable=SC2009
    PID=`ps -ef |grep java|grep $AppName|grep -v grep|wc -l`
    if [ "$PID" != 0 ];then
        echo "$AppName is running..."
    else
        echo "$AppName is not running..."
    fi
}

case $1 in
    start)
    start;;
    stop)
    stop;;
    restart)
    restart;;
    status)
    status;;
    *)

esac

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