百度地图API调用转换WGS坐标以及上传点到鹰视

* 根据某个对象的经纬度和高度在百度地图上绘制出车辆的轨迹

* 首先根据离散的点，拟合出一个平滑的曲线

* 然后将采样后的曲线绘制在百度地图上

* 首先获取百度的AK : 121

* service:

* 开发者使用一个百度的service可以管理很多的电动车，每一个电动车称为一个entity，service的service_id是唯一的，开发者可以使用轨迹管理平台管理service，包括创建，编辑和查看

* entity:

* 一个设备有一个唯一的entity_name作为唯一标识，一个service最多同时管理一百万个entity，鹰眼web api提供entity的增删改查的接口

* entity column:

* entity自定义的字段，可以用于描述eneity

* track:

* entity移动产生的轨迹，由point组成，数量可以没有限制，web api提供了添加，批量添加，查询历史轨迹的接口。

* track column:

* 除了，坐标，速度，方向，定位时间等轨迹的系统字段之外，可以添加自定义的字段。例如心率，油量等等，可以自定义10个字段

* fence:

* 地理围栏，是一个区域，离开这个区域报警

* object：

* 代表图像和视频对象，支持上传图像数据，支持图像数据的存储，查询和下载

 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.json.JSONArray;
import org.json.JSONObject;




/**
 * 
 * @author Administrator
 *
 */
public class BaiDuMapApi {

    public static final String ak="121";
    public static final String coord_type_input_bd="bd09ll";
    public static final String coord_type_input_wgs="wgs84";
    /**
     * WGS坐标转化为baidu需要的坐标，返回的字符串等待处理。。。这是一个GET请求
     */
    public static String WGS2BD09(double lon,double lat) throws IOException {
        String TargetGetURL="http://api.map.baidu.com/geoconv/v1/?coords="+lon+",+"+lat+"&from=1&to=5&ak=9xLNrzeQwWYI3uidYtcLIDlWeLXo7vud";//GET请求
        String result="";
        OutputStreamWriter outputStreamWriter=null;
        BufferedReader bufferedReader=null;
        URL url=new URL(TargetGetURL);
        URLConnection connection=url.openConnection();
        connection.setRequestProperty("accept", "*/*");
        connection.connect();
        //遍历响应头字段
        Map<String, List<String>> map=connection.getHeaderFields();
        for(String key:map.keySet()) {
            //System.out.println(key+"->"+map.get(key));
        }
        bufferedReader=new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        while((line=bufferedReader.readLine())!=null)
            result+=line;
        //System.out.println(result);
        return result;
    }
    /**
     * 返回的字符串处理一下，返回一个坐标对象
     * @param result
     * @return
     */
    public static Lon_Lat_Class FilterLocationFromResult(String result) {
        //System.out.println(result);
        JSONObject my_json =new JSONObject(result);
        //List<Double> location=new ArrayList<>();
        Lon_Lat_Class lon_Lat_Class = new Lon_Lat_Class();
        //System.out.println(my_json.getString("status"));
        if(my_json.getInt("status")==0) {
            
            //System.out.println("转换坐标成功");
            JSONArray jsonArray=my_json.getJSONArray("result");
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject=jsonArray.getJSONObject(i);
                Double loc1=jsonObject.getDouble("x");
                Double loc2=jsonObject.getDouble("y");
                lon_Lat_Class.setLongitude(loc1);
                lon_Lat_Class.setLatitude(loc2);
            }
            //System.out.println(my_json.getJSONArray("result"));
            return lon_Lat_Class;
        }
        System.out.println("坐标转换失败");
        return lon_Lat_Class;
    }
    
    //还要实现一个POST请求用于将指定坐标点上传拟合成一个曲线
    
    public static String SendPost(String URL,String Param) throws IOException {
        PrintWriter out=null;
        BufferedReader in=null;
        String result="";
        URL realURL=new URL(URL);
        URLConnection connection=realURL.openConnection();
        connection.setRequestProperty("accept", "*/*");
        connection.setRequestProperty("connection", "Keep-Alive");
        connection.setDoOutput(true);
        connection.setDoInput(true);
        out=new PrintWriter(connection.getOutputStream());
        //发送请求参数
        out.print(Param);
        out.flush();
        in=new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        while((line=in.readLine())!=null)
            result+=line;
        return result;
                
    }
    public static void testSendPost(String ak,int service_id,String devId,double lat,double lon,long loc_time,String coord_type_input,double speed,int direction,double height) throws IOException {
        String URL="http://yingyan.baidu.com/api/v3/track/addpoint";
        String Param="ak"+"="+ak+"&"+
                    "service_id"+"="+service_id+"&"+
                    "entity_name"+"="+devId+"&"+
                    "latitude"+"="+lat+"&"+
                    "longitude"+"="+lon+"&"+
                    "loc_time"+"="+loc_time+"&"+
                    "coord_type_input"+"="+coord_type_input+"&"+
                    "speed"+"="+speed+"&"+
                    "direction"+"="+direction+"&"+
                    "height"+"="+height;
        System.out.println(Param);
        String result=SendPost(URL, Param);
        System.out.println(result);
        JSONObject my_json=new JSONObject(result);
        System.out.println(my_json.getInt("status"));
    }
    
    public static void main(String[] args) throws IOException {

//        String result=WGS2BD09(LambdaTest01.InterSectionLng, LambdaTest01.InterSectionLat);
//        System.out.println(result);
//        System.out.println(FilterLocationFromResult(result));
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983425, latitude=30.18893166666667, longitude=120.19190166666667, satellite=15, hdop=0.84, altitude=11.8, speed=13.15, direction=9.15]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983427, latitude=30.188995, longitude=120.19190666666667, satellite=15, hdop=0.84, altitude=12.4, speed=11.87, direction=354.48]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983430, latitude=30.189076666666665, longitude=120.19189499999999, satellite=15, hdop=0.84, altitude=12.9, speed=11.59, direction=346.11]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983432, latitude=30.189136666666666, longitude=120.19188666666666, satellite=15, hdop=0.84, altitude=11.5, speed=12.89, direction=352.29]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983435, latitude=30.189213333333335, longitude=120.19188666666666, satellite=15, hdop=0.84, altitude=10.5, speed=11.11, direction=343.92]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983437, latitude=30.189258333333335, longitude=120.19187333333333, satellite=15, hdop=0.84, altitude=12.9, speed=12.13, direction=345.98]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983440, latitude=30.189345000000003, longitude=120.19184666666666, satellite=15, hdop=0.84, altitude=13.1, speed=10.91, direction=353.62]
//        ObjectProperty [devId=DD7FDC41, timestamp=1538983444, latitude=30.189450000000004, longitude=120.19183, satellite=16, hdop=0.7, altitude=12.2, speed=11.09, direction=358.76]
//      ObjectProperty [devId=DD7FDC41, timestamp=1538983447, latitude=30.189543333333337, longitude=120.19183, satellite=15, hdop=0.84, altitude=12.1, speed=12.19, direction=3.75]
        //testSendPost(ak, 205899, "DD7FDC41", 30.18893166666667, 120.19190166666667, 1538983425, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.188995000000000, 120.19190666666667, 1538983427, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189076666666665, 120.19189499999999, 1538983430, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189136666666666, 120.19188666666666, 1538983432, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189213333333335, 120.19188666666666, 1538983435, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189258333333335, 120.19187333333333, 1538983437, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189345000000003, 120.19184666666666, 1538983440, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189450000000004, 120.19183, 1538983444, coord_type_input_wgs, 0.98, 319, 12.2);
//        testSendPost(ak, 205899, "DD7FDC41", 30.189543333333337, 120.19183, 1538983447, coord_type_input_wgs, 0.98, 319, 12.2);
//        //坐标转换
        Lon_Lat_Class lon_Lat_Class=BaiDuMapApi.FilterLocationFromResult(BaiDuMapApi.WGS2BD09(120.191689, 30.189142));
        //System.out.println(lon_Lat_Class);
    }

}