百度~自动定位

百度~第三方自动定位API       http://lbsyun.baidu.com/index.php?title=webapi/ip-api

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;

import java.io.*;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.List;

/**
 *  将字符拼接成字符串
 * */
private String readAll(Reader rd) throws IOException {
    StringBuilder sb = new StringBuilder();
    int cp;
    while ((cp = rd.read()) != -1) {
        sb.append((char) cp);
    }
    return sb.toString();
}

/*
 *   URL资源解析成json对象
 * */

public JSONObject readJsonFromUrl(String url) throws IOException, JSONException {
    InputStream is = null;
    try {
        is = new URL(url).openStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
        String jsonText = readAll(rd);
        JSONObject json = JSONObject.parseObject(jsonText);
        return json;
    } finally {
        //关闭输入流
        is.close();
    }
}

/*
 *   自动定位，传入用户IP获取当地地址名
 * */
@GetMapping("/amtLocation")
public BaseResponse amtLocation(String ip) throws JSONException, IOException{
    BaseResponse response = new BaseResponse();
    try{
        LOGGER.info("自动定位开始");
        //这里调用百度的ip定位api服务 详见 http://api.map.baidu.com/lbsapi/cloud/ip-location-api.htm
        JSONObject json = readJsonFromUrl("http://api.map.baidu.com/location/ip?ak=iTrwV0ddxeFT6QUziPQh2wgGofxmWkmg&ip="+ip);
        //如果IP是本地127.0.0.1或者内网IP192.168则status分别返回 1和2
        String status = json.getString("status");
        if(!"0".equals(status)){
            response.setErrorMsg(ErrorCode.RB_FIND_LACTION_STUTAS.getDesc());
        }
        JSONObject content=((JSONObject) json).getJSONObject("content");              //获取json对象里的content对象
        JSONObject addr_detail=((JSONObject) content).getJSONObject("address_detail");//从content对象里获取address_detail
        String city = addr_detail.getString("city");                            //获取市名，可以根据具体需求更改
        LOGGER.info(city);
        response.setData(json);
        response.setSuccess(true);
        return response;
    }catch (Exception e){
        response.setErrorMsg(ErrorCode.SYSTEM_ERROR.getDesc());
    }
    return response;
}