Want to kill my localhost8080 automatically after my spring boot application completed its execution-CodePudding

I have written a spring boot application for file uploading. I want my spring boot application to shutdown the running localhost 8080 after its execution has been completed .

Is there any possible ways to kill the server after the spring boot execution is completed

Could someone help me on this

want to kill the localhost programmatically.

CodePudding user response：

You can do this in the following way by creating a bean:

@Component
class ShutdownManager {
@Autowired
private ApplicationContext appContext;
public void initiateShutdown(int returnCode){
    SpringApplication.exit(appContext, () -> returnCode);
}

}

You can autowire this bean anywhere and use the initiateShutdown function to close teh application context and server like this:

@Component
public class Controller{
@Autowired
private final ShutdownManager shutdownManager;
  @GetMapping("/")
public void Shutdown(){
   shutdownManager.initiateShutdown(0);
}
}

Or you can simply Autowire this bean on any controller and call this method any where you want with the return code.

CodePudding user response：

Method 1:

If you are using the actuator module, you can shutdown the application via JMX or HTTP if the endpoint is enabled.

add to application.properties:

endpoints.shutdown.enabled=true

Depending on how an endpoint is exposed, the sensitive parameter may be used as a security hint.

For example, sensitive endpoints will require a username/password when they are accessed over HTTP (or simply disabled if web security is not enabled).

you can check this : spring boot documentation

Method 2: Here is another option that does not require you to change the code or exposing a shut-down endpoint. Create the following scripts and use them to start and stop your app.

start.sh

#!/bin/bash
kill $(cat ./pid.file)

Stops your app using the saved process id

start_silent.sh

#!/bin/bash
nohup ./start.sh > foo.out 2> foo.err < /dev/null &

If you need to start the app using ssh from a remote machine or a CI pipeline then use this script instead to start your app. Using start.sh directly can leave the shell to hang.

After eg. re/deploying your app you can restart it using:

sshpass -p password ssh -oStrictHostKeyChecking=no [email protected] 'cd /home/user/pathToApp; ./stop.sh; ./start_silent.sh'

Method 3 here is a maven quick example for maven user to configure HTTP endpoint to shutdown a spring boot web app using spring-boot-starter-actuator so that you can copy and paste: 1.Maven pom.xml:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

2.application.properties:

#No auth  protected 
endpoints.shutdown.sensitive=false

#Enable shutdown endpoint
endpoints.shutdown.enabled=true

All endpoints are listed here

3.Send a post method to shutdown the app: curl -X POST localhost:port/shutdown

Security Note:

if you need the shutdown method auth protected, you may also need

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

config ditails

CodePudding user response：

just put this code at end of your uploading code:

@Controller
public class Upload {

    @Autowired
    private ApplicationContext context;

    @PostMapping("/upload")
    public void uploadFile(){

    // do upload the file here.
    //after uploading shutdown the spring boot application.

    SpringApplication.exit(context, (ExitCodeGenerator) () -> 0);

       }    

     }

I have checked it myself it is working.