@Configuration
public class RestConfig {

//    @Bean
//    @ConditionalOnMissingBean({RestOperations.class, RestTemplate.class})
//    public RestTemplate restTemplate(ClientHttpRequestFactory factory) {
//        return new RestTemplate(factory);
//    }
//
//    @Bean
//    @ConditionalOnMissingBean({ClientHttpRequestFactory.class})
//    public ClientHttpRequestFactory simpleClientHttpRequestFactory() {
//        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
//        factory.setReadTimeout(30000);
//        factory.setConnectTimeout(30000);
//        return factory;
//    }

    @Bean(value = "restTemplate")
    public RestTemplate getRestTemplateBuilder(){

        RestTemplate restTemplate = new RestTemplateBuilder()
                .setConnectTimeout(Duration.ofMillis(30000))
                .setReadTimeout(Duration.ofMillis(30000))
                .build();
        restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());

        StringHttpMessageConverter stringHttpMessageConverter = new StringHttpMessageConverter(StandardCharsets.UTF_8);
        stringHttpMessageConverter.setWriteAcceptCharset(true);

        List<MediaType> mediaTypeList = new ArrayList<>();
        mediaTypeList.add(MediaType.ALL);

        for (int i = 0; i < restTemplate.getMessageConverters().size(); i++) {
            if (restTemplate.getMessageConverters().get(i) instanceof StringHttpMessageConverter) {
                restTemplate.getMessageConverters().remove(i);
                restTemplate.getMessageConverters().add(i, stringHttpMessageConverter);
            }
            if(restTemplate.getMessageConverters().get(i) instanceof MappingJackson2HttpMessageConverter){
                try{
                    ((MappingJackson2HttpMessageConverter) restTemplate.getMessageConverters().get(i)).setSupportedMediaTypes(mediaTypeList);
                }catch(Exception e){
                    e.printStackTrace();
                }
            }
        }

        return restTemplate;
    }

}

<dependency>
      <groupId>org.jsoup</groupId>
      <artifactId>jsoup</artifactId>
      <version>1.12.1</version>
</dependency>

@Service
@Slf4j
public class WeatherService {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private ObjectMapper objectMapper;

    public String getCurrentIp(HttpServletRequest request) {
        String ipAddress = null;
        try {
            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.getRemoteAddr();
                if (ipAddress.equals("127.0.0.1")) {
                    // 根据网卡取本机配置的IP
                    InetAddress inet = null;
                    try {
                        inet = InetAddress.getLocalHost();
                    } catch (UnknownHostException e) {
                        e.printStackTrace();
                    }
                    ipAddress = inet.getHostAddress();
                }
            }
            // 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
            if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
                // = 15
                if (ipAddress.indexOf(",") > 0) {
                    ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                }
            }
        } catch (Exception e) {
            ipAddress="";
        }
        // ipAddress = this.getRequest().getRemoteAddr();
        return ipAddress;
    }

    public String getPositionByCurrentIp(HttpServletRequest request) throws IOException {
        String ip = getCurrentIp(request);
        log.info(ip);
        return getPositionByIpFromIp138(ip);
    }

    public String getPositionByIpFromTaobao(String ip) throws JsonProcessingException {
        Map<String,String> map = new HashMap<>();
        map.put("ip",ip);
        String result = restTemplate.getForObject("http://ip.taobao.com/service/getIpInfo.php?ip={ip}",String.class,map);
        JsonNode jsonNode = objectMapper.readTree(result);
        System.out.println(jsonNode.toString());
        String response = jsonNode.get("data").get("city").asText();
        return response;
    }

    public String getPositionByIpFromIp138(String ip) throws IOException {
        Document document = Jsoup.connect("http://www.ip138.com/iplookup.asp?action=2&ip="+ip).get();
        //本站数据：上海市闵行区 电信
        String addr = document.getElementsByClass("ul1").get(0).getElementsByTag("li").get(0).text();
        String position = null;
        try{
            position = addr.replaceAll("本站数据：","").replaceAll("特别行政区","");
            log.info(position);
            String[] positions = position.substring(0,position.indexOf(" ")).split("省|市|县|区");
            for (int i = positions.length-1; i >= 0; i--) {
                if (!StringUtils.isEmpty(positions[i])){
                    position = positions[i];
                    break;
                }
            }
        }catch (Exception e){}
        return position;
    }

    public String getWeatherByArea(String area){
        String result = restTemplate.getForObject("http://wthrcdn.etouch.cn/weather_mini?city="+area,String.class);
        return result;
    }

    public String getWeatherByIp(String ip) throws IOException {
        String area = getPositionByIpFromIp138(ip);
        String result = restTemplate.getForObject("http://wthrcdn.etouch.cn/weather_mini?city="+area,String.class);
        return result;
    }

    public String getWeatherByCurrentIp(HttpServletRequest request) throws IOException {
        String area = getPositionByCurrentIp(request);
        String result = restTemplate.getForObject("http://wthrcdn.etouch.cn/weather_mini?city="+area,String.class);
        return result;
    }

}

@RestController
public class WeatherController {
    @Autowired
    private WeatherService weatherService;

    @GetMapping("/weather")
    public String getWeather(HttpServletRequest request,@RequestParam(required = false) String area,@RequestParam(required = false) String ip) throws IOException {
        if (!StringUtils.isEmpty(ip)){
            return weatherService.getWeatherByIp(ip);
        }
        if (!StringUtils.isEmpty(area)){
            return weatherService.getWeatherByArea(area);
        }
        return weatherService.getWeatherByCurrentIp(request);
    }

    @GetMapping("/position")
    public String getCurrentLocation(HttpServletRequest request,@RequestParam(required = false) String ip) throws IOException {
        if (!StringUtils.isEmpty(ip)){
            return weatherService.getPositionByIpFromIp138(ip);
        }
        return weatherService.getPositionByCurrentIp(request);
    }

}