java根據ip地址獲取城市地域信息

java根據ip地址獲取城市地域信息

這裏提供兩個公開的接口，一個是阿里的，一個是新浪的
http://ip.taobao.com/service/getIpInfo.php?ip=123.139.94.139

http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=218.192.3.42

接下來上代碼，我這裏用的是springboot自帶的RestTemplate，各位如果沒用到可以用HttpURLConnection。案例是在攔截器裏獲取ip，並查詢地址。如果內網測試的話，獲取到的是內網ip，通過內網穿透出去訪問，可以獲取你的公網出口ip，或者吧ip直接寫死。

@SpringBootApplication
public class LgmallRestApplication {
    @Autowired
    private RestTemplateBuilder builder;
    @Bean
    public RestTemplate restTemplate() {
        return builder.build();
    }
    public static void main(String[] args) {
        SpringApplication.run(LgmallRestApplication.class, args);
    }
}

/**
 * @Author: nelson
 * @Description: 商品瀏覽記錄攔截器
 * @Date: created in 2018/03/31/16:49
 */
public class BrowseItemInterceptor implements HandlerInterceptor {

    @Autowired
    private RestTemplate restTemplate;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String ip = request.getHeader("x-forwarded-for");
        if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
            // 多次反向代理後會有多個ip值，第一個ip纔是真實ip
            if( ip.indexOf(",")!=-1 ){
                ip = ip.split(",")[0];
            }
        }
        //新浪查詢失敗查詢阿里
        String sina = restTemplate.getForObject("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip={ip}", String.class,ip);
        SinaIpVo sinaIpVo = new Gson().fromJson(sina, SinaIpVo.class);
        if(sinaIpVo.getRet()!=-1){
            System.out.println(sinaIpVo.getProvince());
            System.out.println(sinaIpVo.getCity());
        }else{
            String object = restTemplate.getForObject("http://ip.taobao.com/service/getIpInfo.php?ip={ip}", String.class,ip);
            IpVo ipVo = new Gson().fromJson(object, IpVo.class);
            // XX表示內網 
            if(ipVo.getCode()==0 && !ipVo.getAddress().getRegion().equals("XX")){
                System.out.println(ipVo.getAddress().getRegion());
                System.out.println(ipVo.getAddress().getCity());
            }
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    }
}

阿里返回結果封裝的vo,省去get、set方法，需要其他的屬性根據返回json自己擴展。

/**
 * @Author: nelson
 * @Description: get city by ip
 * @Date: created in 2018/03/31/17:40
 */
public class IpVo implements Serializable{
    private Integer code;
    private Address address;

    public class Address implements Serializable{
        private String ip;
        private String region;
        private String city;
    }
}

新浪返回結果封裝的vo,省去get、set方法，需要其他的屬性根據返回json自己擴展。

/**
 * @Author: nelson
 * @Description: get city by ip
 * @Date: created in 2018/03/31/17:40
 */
public class SinaIpVo implements Serializable{
    private Integer ret;
    private String province;
    private String city;
}

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