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详解spring boot 以jar的方式启动常用shell脚本

2019年07月19日  | 移动技术网IT编程  | 我要评论

用spring boot框架做的项目，将第三方包全部打在jar里面，通过shell脚本启动和停止服务，常用的shell脚本模板如下：

#!/bin/bash
java_options_initial=-xms128m
java_options_max=-xmx512m
_jar_keywords=monitor-alarm-task-1.0-snapshot.jar
app_name=monitor-alarm-task
application_file=/opt/scpip_monitor/application.properties
pid=$(ps aux | grep ${_jar_keywords} | grep -v grep | awk '{print $2}' )
alarm_config_file=`pwd`/alarmconfig.yaml


function check_if_process_is_running {
 if [ "$pid" = "" ]; then
 return 1
 fi
 ps -p $pid | grep "java"
 return $?
}



case "$1" in
 status)
 if check_if_process_is_running
 then
 echo -e "\033[32m $app_name is running \033[0m"
 else
 echo -e "\033[32m $app_name not running \033[0m"
 fi
 ;;
 stop)
 if ! check_if_process_is_running
 then
 echo -e "\033[32m $app_name already stopped \033[0m"
 exit 0
 fi
 kill -9 $pid
 echo -e "\033[32m waiting for process to stop \033[0m"
 not_killed=1
 for i in {1..20}; do
 if check_if_process_is_running
 then
 echo -ne "\033[32m . \033[0m"
 sleep 1
 else
 not_killed=0
 fi
 done
 echo
 if [ $not_killed = 1 ]
 then
 echo -e "\033[32m cannot kill process \033[0m"
 exit 1
 fi
 echo -e "\033[32m $app_name already stopped \033[0m"
 ;;
 start)
 if [ "$pid" != "" ] && check_if_process_is_running
 then
 echo -e "\033[32m $app_name already running \033[0m"
 exit 1
 fi
 nohup java -jar -dalarm.config.file=$alarm_config_file $java_options_initial $java_options_max $_jar_keywords --spring.config.location=$application_file > /dev/null 2>&1 & 
 echo -ne "\033[32m starting \033[0m" 
 for i in {1..20}; do
 echo -ne "\033[32m.\033[0m"
 sleep 1
 done
 if check_if_process_is_running 
 then
 echo -e "\033[32m $app_name fail \033[0m"
 else
 echo -e "\033[32m $app_name started \033[0m"
 fi
 ;;
 restart)
 $0 stop
 if [ $? = 1 ]
 then
 exit 1
 fi
 $0 start
 ;;
 *)
 echo "usage: $0 {start|stop|restart|status}"
 exit 1
esac


exit 0

正真启动的命令：

复制代码 代码如下:

nohup java -jar -dalarm.config.file=$alarm_config_file $java_options_initial $java_options_max $_jar_keywords --spring.config.location=$application_file > /dev/null 2>&1 &

其中-dalarm.config.file 指定了外部配置文件的路径，在service初始化中通过这个路径读取外部配置文件，然后解析成对象，如下：

import java.io.bufferedreader;
import java.io.fileinputstream;
import java.io.inputstream;
import java.io.inputstreamreader;
import java.util.hashmap;
import java.util.list;
import java.util.map;

import org.slf4j.logger;
import org.slf4j.loggerfactory;
import org.springframework.stereotype.service;
import org.yaml.snakeyaml.yaml;

import scpip.monitor.task.obj.metricobj;

@service
public class alarmconfigservice {
  private final logger logger = loggerfactory.getlogger(this.getclass());
  private map<string,metricobj> metricmap;
  public alarmconfigservice (){
    metricmap = new hashmap<string,metricobj>();
    init();
  }
  
  private void init(){
    
    bufferedreader buffer;
    try {
      
      inputstream cpresource = new fileinputstream(getalarmconfigfile());
      buffer = new bufferedreader(new inputstreamreader(cpresource,"utf-8"));
      yaml yaml = new yaml();
      //map<string, list<map<string,string>>> object = (map<string, list<map<string,string>>>) yaml.load(getalarmconfigfile());
      map<string, list<map<string,string>>> object = (map<string, list<map<string,string>>>) yaml.load(buffer);
      logger.info("object==" + object);
      parseconfigmap(object);
    } catch (exception e) {
      e.printstacktrace();
    }
    
  }

  public map<string, metricobj> getmetricmap() {
    return metricmap;
  }

  //{metricname=当前响应时间, alarmvalue=10,20,40, columnname=response_time}, 
  private void parseconfigmap(map<string,list<map<string,string>>> object){
    metricobj obj = null;
    for (string key : object.keyset()) {
      list<map<string,string>> values = object.get(key);
      for(map<string,string> map : values){
        obj = new metricobj();
        string metricname = map.get("metricname");
        obj.setalarmvalue(map.get("alarmvalue"));
        obj.setcolumnname(map.get("columnname"));
        obj.settablename(map.get("tablename"));
        obj.setmetricname(metricname);
        metricmap.put(metricname,obj);
       }
    }
  }
  
  private static string getalarmconfigfile() {
      return system.getproperty("alarm.config.file");
  }
}

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