对接高德地图API规划路线
一，首先是去高德官网申请
这边是java服务端调用api接口，所以应该社区web服务的appkey
二，然后写几个工具类
a.发送http请求
b.参数对象
c.返回接收对象
httpRequest
package com.gaodeMap.utils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
/**
*
* @author 郑文
*
*/
public class HttpRequest {
/**
* 向指定URL发送GET方法的请求
*
* @param url 发送请求的URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
public static String sendGet(String url, String param) {
String result = "";
BufferedReader in = null;
try {
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
for (String key : map.keySet()) {
// System.out.println(key + "--->" + map.get(key));
}
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally {
try {
if (in != null) {
in.close();
}
} catch (Exception e2) {
e2.printStackTrace();
}
}
return result;
}
/**
* 向指定 URL 发送POST方法的请求
*
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String sendPost(String url, String param) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
System.out.println("发送 POST 请求出现异常！" + e);
e.printStackTrace();
}
//使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result;
}
}
MapNavResults
package com.gaodeMap.utils;
/**
*
* @author 郑文
*
*/
public class MapNavResults {
private String distance;//行驶距离
private String duration;//行驶时间（单位：秒）
private String tolls;//道路收费（单位：元）
public String getDistance() {
return distance;
}
public void setDistance(String distance) {
this.distance = distance;
}
public String getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration = duration;
}
public String getTolls() {
return tolls;
}
public void setTolls(String tolls) {
this.tolls = tolls;
}
@Override
public String toString() {
return "MapNavResults [distance=" + distance + ", duration=" + duration
+ ", tolls=" + tolls + "]";
}
}
MapNavUtil
package com.gaodeMap.utils;
import org.apache.commons.lang.StringUtils;
import com.tjhx.core.util.PropertiesUtils;
import com.yaysyc.ysyc.BussinessConstant;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
/**
*
* @author 郑文
*
*/
public class MapNavUtil {
private String startCoordinate;
private String endCoordinate;
private String applicationKey;
private String param;
/**
* 必须要构造参数
* @param startCoordinate 起点经纬度 经度在前，纬度在后
* @param endCoordinate 终点经纬度 经度在前，纬度在后
* @param applicationKey 高德地图应用key，需要Web服务类型的key
*/
public MapNavUtil(String startCoordinate, String endCoordinate,
String applicationKey) {
this.startCoordinate = startCoordinate;
this.endCoordinate = endCoordinate;
this.applicationKey = applicationKey;
String param = "origin="+this.startCoordinate+"&destination="+this.endCoordinate+"&key="+this.applicationKey;
//这里事读取properties文件里配置的规划路线规则，参数详情见后面的补充说明
String strategy = PropertiesUtils.getProperty("planPathRule");
if(StringUtils.isNotBlank(strategy)) {
param += "&strategy=" + strategy;
}
this.param = param;
}
/**
* 获取地图导航返回值
* @return
*/
public MapNavResults getResults(){
String apiUrl = PropertiesUtils.getProperty(BussinessConstant.GAODE_DRIVER_API_URL);
if(StringUtils.isBlank(apiUrl)) {
apiUrl = "https://restapi.amap.com/v3/direction/driving";
}
String sendGet = HttpRequest.sendGet(apiUrl, param);
JSONObject jsonObject=JSONObject.fromObject(sendGet);
String routeJsonString = jsonObject.get("route").toString();
JSONObject routeObject=JSONObject.fromObject(routeJsonString);
JSONArray jsonArray = routeObject.getJSONArray("paths");
JSONObject zuiJson = jsonArray.getJSONObject(0);
MapNavResults mapResult=new MapNavResults();
mapResult.setDistance(zuiJson.get("distance").toString());
mapResult.setDuration(zuiJson.get("duration").toString());
mapResult.setTolls(zuiJson.get("tolls").toString());
return mapResult;
}
}
顺便送上测试类
TestRequest
package com.gaodeMap.utils;
/**
*
* @author 郑文
*
*/
public class TestRequest {
public static void main(String[] args) {
String origin="104.07,30.67";//出发点经纬度 -- 四川省成都市青羊区草市街街道锣锅巷40号棉麻大厦
String destination="104.46,29.23";//目的地经纬度 -- 四川省自贡市贡井区五宝镇高林村
String key="yourkey";//高德用户key
MapNavUtil mapResult=new MapNavUtil(origin, destination, key);
System.out.println(mapResult.getResults().toString());
}
}
api接口请求的url拼接的参数见官方文档
https://lbs.amap.com/api/webservice/guide/api/direction
