<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>2.0.0.RELEASE</version>
</parent>

<dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
  </dependency>
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
  </dependency>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
    <scope>test</scope>
  </dependency>
</dependencies>

spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.show-sql=true

@RestController
public class VisitorController{
 @Autowired
 private VisitorRepository repository;
 @RequestMapping("/")
 public String index(HttpServletRequest request)
 {
 String ip= request.getHeader("X-Real-IP");
 if(ip== null || "".equals(ip))
 {
  ip = request.getRemoteAddr();
 }
 Visitor visitor = repository.findByIp(ip);
 if(visitor == null)
 {
  visitor = new Visitor();
  visitor.setIp(ip);
  visitor.setTimes(1L);
 }
 else
 {
  visitor.setTimes(visitor.getTimes()+1);
 }
 repository.save(visitor);
 return "ip:"+visitor.getIp()+" "+visitor.getTimes()+" times.";
 }
}

@Entity
public class Visitor {
 @Id
 @GeneratedValue
 private Long id;
 @Column(nullable=false)
 private Long times;
 @Column(nullable=false)
 private String ip;
 // get,set 方法略
}

version: '3'
services:
 nginx:
  container_name: v-nginx
  image: nginx:1.13
  restart: always
  ports:
  - 80:80
  - 443:443
  volumes:
  - ./nginx/conf.d:/etc/nginx/conf.d
 mysql:
  container_name: v-mysql
  image: mysql/mysql-server:5.7
  environment:
  MYSQL_DATABASE: test
  MYSQL_ROOT_PASSWORD: root
  MYSQL_ROOT_HOST: '%'
  ports:
  - "3306:3306"
  volumes:
  - ./mysqldata:/var/lib/mysql
  restart: always
  
 app:
  restart: always
  build: ./app
  working_dir: /app
  volumes:
   - ./app:/app
   - ~/.m2:/root/.m2
  expose:
   - "8080"
  depends_on:
   - nginx
   - mysql
  command: mvn clean spring-boot:run -Dspring-boot.run.profiles=docker

server {
  listen 80;
  charset utf-8;
  access_log off;
  location / {
    proxy_pass http://app:8080;
    proxy_set_header Host $host:$server_port;
    proxy_set_header X-Forwarded-Host $server_name;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }
  location /static {
    access_log  off;
    expires   30d;
    alias /app/static;
  }
}