问题:为什么我在编写我的 linux 服务时收到 Exec 格式错误?

我正在编写一个 linux 服务来将我的 Spring Boot Web 应用程序部署为服务。这是服务文件springboot.service

[Unit]
Description=My Webapp Java REST Service

[Service]
User=ubuntu
# The configuration file application.properties should be here:

#change this to your workspace
WorkingDirectory=/home/ubuntu

#path to executable. 
#executable is a bash script which calls jar file
ExecStart=/home/ubuntu/spring-start

SuccessExitStatus=143
TimeoutStopSec=10
Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target

我的脚本文件spring-start.sh

sudo java -jar "/home/ubuntu/FirstWebAppWithoutDB.jar"

我还通过chmod u+x spring-start.sh授予 spring-start.sh 执行权限

sudo systemctl daemon-reload

sudo systemctl enable springboot.service

sudo systemctl start springboot

sudo systemctl status springboot

不幸的是,服务因错误 Exec 格式错误而失败:

springboot.service: Failed to execute command: Exec format error
Jul 14 07:39:56 ip-172-31-40-71 systemd[10075]: springboot.service: Failed at step EXEC spawning /home/ubuntu/spring-start.sh: Exec format error

解答

将 shebang 添加到脚本中

#!/bin/bash
sudo java -jar "/home/ubuntu/FirstWebAppWithoutDB.jar"

和执行许可

chmod +x spring-start.sh