[root@switch-sz-service-test ~]# yum install -y java-1.8.0-openjdk-devel.x86_64

# 可以看到Java的版本是1.8
[root@switch-sz-service-test ~]# java -version
openjdk version "1.8.0_302"
OpenJDK Runtime Environment (build 1.8.0_302-b08)
OpenJDK 64-Bit Server VM (build 25.302-b08, mixed mode)

# 可以看到JAVA_HOME是/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64
[root@switch-sz-service-test ~]# find / -name java 
/etc/pki/ca-trust/extracted/java
/etc/pki/java
/etc/alternatives/java
/etc/java
/var/lib/alternatives/java
/usr/bin/java
/usr/lib/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64/jre/bin/java
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64/bin/java
/usr/lib/jvm/java
/usr/share/bash-completion/completions/java
/usr/share/java
[root@switch-sz-service-test ~]# ll /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64
total 180
-rw-r--r-- 1 root root   1522 Jul 22 01:18 ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root   4096 Oct  4 00:29 bin
drwxr-xr-x 3 root root    132 Oct  4 00:29 include
drwxr-xr-x 4 root root     95 Oct  4 00:29 jre
drwxr-xr-x 3 root root    144 Oct  4 00:29 lib
-rw-r--r-- 1 root root  19274 Jul 22 01:18 LICENSE
drwxr-xr-x 2 root root    204 Oct  4 00:29 tapset
-rw-r--r-- 1 root root 155003 Jul 22 01:18 THIRD_PARTY_README

# 配置JAVA_HOME
[root@switch-sz-service-test ~]# vim /etc/profile

# 在最后面添加上如下語句
JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64
export JAVA_HOME

# 可以看到已經(jīng)配置好了JAVA_HOME了
[root@switch-sz-service-test ~]# source /etc/profile
[root@switch-sz-service-test ~]# echo $JAVA_HOME
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64
[root@switch-sz-service-test ~]# 

package com.switchvov.springboot.remote.deploy.demo.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author switch
 * @since 2021/10/3
 */
@RestController
@RequestMapping("/hello")
@Slf4j
public class HelloController {
    @GetMapping("/{name}")
    public String hello(@PathVariable("name") String name) {
        String hello = "hello " + name;
        log.info(hello);
        return hello;
    }
}

package com.switchvov.springboot.remote.deploy.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringbootRemoteDeployDemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringbootRemoteDeployDemoApplication.class, args);
    }
}

$ curl http://127.0.0.1:8080/hello/world
hello world%

Successfully connected to root@120.78.218.44:22

> pwd
/root
Command finished with exit code 0


Checking rsync connection...
/usr/bin/rsync -n -e "ssh -p 22 " root@120.78.218.44:

root@120.78.218.44's password: 


dr-xr-x---         190 2021/10/04 00:56:11 .

Process finished with exit code 0


Starting introspection for Java...
> echo ${SHELL}
/bin/bash
Command finished with exit code 0
> echo ${JAVA_HOME}
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.302.b08-0.el8_4.x86_64
Command finished with exit code 0
> java -version
openjdk version "1.8.0_302"
OpenJDK Runtime Environment (build 1.8.0_302-b08)
OpenJDK 64-Bit Server VM (build 25.302-b08, mixed mode)
Command finished with exit code 0

Introspection completed

$ curl http://localhost:63006/hello/world
hello world%

[root@switch-sz-service-test ~]# pwd
/root
[root@switch-sz-service-test ~]# ll
total 4
drwxr-xr-x 38 root root 4096 Oct  4 01:08 springboot-remote-deploy-demo
[root@switch-sz-service-test ~]# curl http://127.0.0.1:8080/hello/world
hello world[root@switch-sz-service-test ~]#