【Spring Boot】SpringBoot实现社交网站用户主页的IP归属地显示功能代码

下面是一个简单的Spring Boot用户主页IP归属地显示功能的代码示例：

1. 首先需要引入依赖：

    com.maxmind.geoip2
    geoip2
    2.7.0

geoip2介绍：

geoip2是一个国外提供IP数据库的，提供有免费的IP数据库，只需要注册他们的账号即可下载IP数据库。

• 2.创建一个IPUtils工具类，用于获取IP地址和归属地信息：

@Component
public class IPUtils {

    @Value("${geoip.db-location}")
    private String dbLocation;

    private DatabaseReader reader;

    @PostConstruct
    public void setup() throws IOException {
        File database = new File(dbLocation);
        reader = new DatabaseReader.Builder(database).build();
    }

    public String getIpAddress(HttpServletRequest request) {
        String ipAddress = request.getHeader("X-Forwarded-For");
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getRemoteAddr();
        }
        return ipAddress;
    }

    public String getCountry(String ipAddress) throws IOException {
        InetAddress inetAddress = InetAddress.getByName(ipAddress);
        CityResponse response = reader.city(inetAddress);
        return response.getCountry().getName();
    }
}

3.在UserController中调用IPUtils获取IP地址和归属地信息：

@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private IPUtils ipUtils;

    @GetMapping("/{id}")
    public UserDTO getUserById(@PathVariable Long id, HttpServletRequest request) throws IOException {
        User user = userService.getUserById(id);
        UserDTO userDTO = new UserDTO();
        BeanUtils.copyProperties(user, userDTO);

        String ipAddress = ipUtils.getIpAddress(request);
        String country = ipUtils.getCountry(ipAddress);
        userDTO.setIpAddress(ipAddress);
        userDTO.setCountry(country);

        return userDTO;
    }

}

4.创建一个UserDTO，用于向前端返回用户信息和IP归属地信息：

public class UserDTO {

    private Long id;

    private String username;

    private String email;

    private Date createTime;

    private String ipAddress;

    private String country;

    // getter/setter省略
}

5.在application.properties中配置GeoIP2数据库文件的位置：

geoip.db-location=/path/to/GeoLite2-City.mmdb

6.在前端页面中显示IP归属地信息：

    
用户ID：{{user.id}}
    
用户名：{{user.username}}
    
邮箱地址：{{user.email}}
    
注册时间：{{user.createTime}}
    
IP地址：{{user.ipAddress}}
    
归属地：{{user.country}}