java根据ip地址获取城市地域信息

java根据ip地址获取城市地域信息

这里提供两个公开的接口，一个是阿里的，一个是新浪的
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

接下来上代码，我这里用的是springboot自带的RestTemplate，各位如果没用到可以用HttpURLConnection。案例是在拦截器里获取ip，并查询地址。如果内网测试的话，获取到的是内网ip，通过内网穿透出去访问，可以获取你的公网出口ip，或者吧ip直接写死。

@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: 商品浏览记录
 * @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)) {
            // 多次反向代理后会有多个ip值，第一个ip才是真实ip
            if( ip.indexOf(",")!=-1 ){
                ip = ip.split(",")[0];
            }
        }
        //新浪查询失败查询阿里
        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表示内网 
            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 {
    }
}

阿里返回结果封装的vo,省去get、set方法，需要其他的属性根据返回json自己扩展。

/**
 * @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;
    }
}

新浪返回结果封装的vo,省去get、set方法，需要其他的属性根据返回json自己扩展。

/**
 * @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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