Java环境百度地图Api的使用

1.介绍

官网地址：http://lbsyun.baidu.com/

百度地图开放平台提供了多种服务接入方式：

2 注册账号、申请AK

要使用百度地图提供的服务，需要注册百度账号、申请服务密钥等，具体步骤如下：

注册百度账号，使用手机号即可完成注册

注册完成后登录

要使用地图服务还需要申请密钥(AK)，地址：http://lbsyun.baidu.com/apiconsole/key#/home

点击"创建应用"按钮，跳转到创建应用页面

应用类型下拉框选项如下：

点击"提交"按钮完成AK创建。
注意：应用类别需要根据我们使用百度地图的方式进行相应选择，如果在网页中通过js方式使用百度地图，应用类别为浏览器端，如果要通过HTTP方式使用百度地图，应用类别为服务端。

3.入门案例

3.1 案例一

<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}</style><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己AK"></script><title>地图展示</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">// 百度地图API功能var map = new BMap.Map("allmap");    // 创建Map实例map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);  // 初始化地图,设置中心点坐标和地图级别//添加地图类型控件map.addControl(new BMap.MapTypeControl({mapTypes:[BMAP_NORMAL_MAP,BMAP_HYBRID_MAP]}));map.enableScrollWheelZoom(true);     //开启鼠标滚轮缩放
</script>

3.2 案例二

<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}</style><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己AK"></script><title>计算两点间距离</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">// 百度地图API功能var map = new BMap.Map("allmap");map.centerAndZoom("重庆",12);  //初始化地图,设置城市和地图级别。var pointA = new BMap.Point(106.486654,29.490295);  // 创建点坐标A--大渡口区var pointB = new BMap.Point(106.581515,29.615467);  // 创建点坐标B--江北区alert('从大渡口区到江北区的距离是：'+(map.getDistance(pointA,pointB)).toFixed(2)+' 米。');  //获取两点距离,保留小数点后两位var polyline = new BMap.Polyline([pointA,pointB], {strokeColor:"blue", strokeWeight:6, strokeOpacity:0.5});  //定义折线map.addOverlay(polyline);     //添加折线到地图上
</script>

3.3 案例三

<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}</style><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己AK"></script><title>单击获取点击的经纬度</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">// 百度地图API功能var map = new BMap.Map("allmap");map.centerAndZoom("北京",12);//单击获取点击的经纬度map.addEventListener("click",function(e){alert(e.point.lng + "," + e.point.lat);});
</script>

3.4 案例四

<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html,#allmap {width: 100%;height: 100%;overflow: hidden;margin:0;font-family:"微软雅黑";}</style><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己AK"></script><title>根据关键字检索</title>
</head>
<body>
<div id="allmap"></div>
<p>返回北京市地图上圆形覆盖范围内的“餐馆”检索结果，并展示在地图上</p>
</body>
</html>
<script type="text/javascript">// 百度地图API功能var map = new BMap.Map("allmap");            // 创建Map实例var mPoint = new BMap.Point(116.404, 39.915);map.enableScrollWheelZoom();map.centerAndZoom(mPoint,15);
var circle = new BMap.Circle(mPoint,1000,{fillColor:"blue", strokeWeight: 1 ,fillOpacity: 0.3, strokeOpacity: 0.3});map.addOverlay(circle);var local =  new BMap.LocalSearch(map, {renderOptions: {map: map, autoViewport: false}});local.searchNearby('餐馆',mPoint,1000);
</script>

3.5 案例五

<!DOCTYPE html>
<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta name="viewport" content="initial-scale=1.0, user-scalable=no" /><style type="text/css">body, html {width: 100%;height: 100%; margin:0;font-family:"微软雅黑";}#allmap{height:500px;width:100%;}#r-result,#r-result table{width:100%;}</style><script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=自己AK"></script><script type="text/javascript" src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script><title>根据起终点名称驾车导航</title>
</head>
<body>
<div id="allmap"></div>
<div id="driving_way"><select><option value="0">最少时间</option><option value="1">最短距离</option><option value="2">避开高速</option></select><input type="button" id="result" value="查询"/>
</div>
<div id="r-result"></div>
</body>
</html>
<script type="text/javascript">// 百度地图API功能var map = new BMap.Map("allmap");var start = "天安门";var end = "金燕龙办公楼";map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);map.enableScrollWheelZoom(true);     //开启鼠标滚轮缩放//三种驾车策略：最少时间，最短距离，避开高速var routePolicy = [BMAP_DRIVING_POLICY_LEAST_TIME,BMAP_DRIVING_POLICY_LEAST_DISTANCE,BMAP_DRIVING_POLICY_AVOID_HIGHWAYS];$("#result").click(function(){map.clearOverlays();var i=$("#driving_way select").val();search(start,end,routePolicy[i]);function search(start,end,route){var driving = new BMap.DrivingRoute(map, {renderOptions:{map: map, autoViewport: true},policy: route});driving.search(start,end);}});
</script>

3.6 案例六

本小节案例来调用百度地图提供的HTTP服务接口，实现地理编码，即根据提供的地址获取经纬度。

可以直接在浏览器中访问上面的接口，output参数指定为json：

output参数指定为xml：

注意：调用上面接口时使用的AK应用类别为服务端。
也可以在Java程序中调用上面的HTTP接口，并解析返回的数据：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.DecimalFormat;
import java.util.Map;

public class BaiduMapTest {public static void main(String[] args) {String ak = "自己AK";String address = "北京市海淀区上地十街10号";String httpUrl = "http://api.map.baidu.com/geocoding/v3/?address="+address+"&output=json&ak=" + ak;

StringBuilder json = new StringBuilder();try {URL url = new URL(httpUrl);URLConnection urlConnection = url.openConnection();BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));String inputLine = null;while ((inputLine = in.readLine()) != null) {json.append(inputLine);}in.close();} catch (MalformedURLException e) {} catch (IOException e) {}System.out.println(json.toString());

String data = json.toString();if (data != null && !"".equals(data)) {Map map = JSON.parseObject(data, Map.class);if ("0".equals(map.getOrDefault("status", "500").toString())) {Map childMap = (Map) map.get("result");Map posMap = (Map) childMap.get("location");double lng = Double.parseDouble(posMap.getOrDefault("lng", "0").toString()); // 经度double lat = Double.parseDouble(posMap.getOrDefault("lat", "0").toString()); // 纬度DecimalFormat df = new DecimalFormat("#.######");String lngStr = df.format(lng);String latStr = df.format(lat);String result = lngStr + "," + latStr;System.out.println(result);}}}
}

3.7 案例七

本小节案例来调用百度地图提供的HTTP服务接口，实现驾车路线规划。

可以直接在浏览器中访问上面的接口：

也可以在Java程序中调用上面的HTTP接口，并解析返回的数据：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.DecimalFormat;
import java.util.Map;

public class BaiduMapTest {public static void main(String[] args) {String ak = "自己AK";String origin = "40.01116,116.339303"; //起点经纬度，格式为：纬度,经度；小数点后不超过6位String destination = "39.936404,116.452562"; //终点经纬度，格式为：纬度,经度；小数点后不超过6位String httpUrl = "http://api.map.baidu.com/directionlite/v1/driving?origin="+origin+"&destination="+destination+"&ak=" + ak;

StringBuilder json = new StringBuilder();try {URL url = new URL(httpUrl);URLConnection urlConnection = url.openConnection();BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));String inputLine = null;while ((inputLine = in.readLine()) != null) {json.append(inputLine);}in.close();} catch (MalformedURLException e) {} catch (IOException e) {}System.out.println(json.toString());

String data = json.toString();if (data != null && !"".equals(data)) {Map map = JSON.parseObject(data, Map.class);if ("0".equals(map.getOrDefault("status", "500").toString())) {Map childMap = (Map) map.get("result");JSONArray jsonArray = (JSONArray) childMap.get("routes");JSONObject jsonObject = (JSONObject) jsonArray.get(0);double distance = Double.parseDouble(jsonObject.get("distance") == null ? "0" : jsonObject.get("distance").toString());System.out.println(distance);}}}
}

4.简单工具类

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.DecimalFormat;
import java.util.Map;/*** 百度地图操作工具类*/
public class BaiduMapUtils2 {public static void main(String[] args) {String origin = getCoordinate("北京市育新花园小区");String destination = getCoordinate("北京市百度大厦");Double distance = getDistance(origin, destination);System.out.println("订单距离：" + distance + "米");Integer time = getTime(origin, destination);System.out.println("线路耗时" + time + "秒");}private static String AK = "自己AK";/*** 调用百度地图地理编码服务接口，根据地址获取坐标（经度、纬度）** @param address* @return*/public static String getCoordinate(String address) {String httpUrl = "http://api.map.baidu.com/geocoding/v3/?address=" + address + "&output=json&ak=" + AK;String json = loadJSON(httpUrl);Map map = JSON.parseObject(json, Map.class);String status = map.get("status").toString();if (status.equals("0")) {//返回结果成功，能够正常解析地址信息Map result = (Map) map.get("result");Map location = (Map) result.get("location");String lng = location.get("lng").toString();String lat = location.get("lat").toString();DecimalFormat df = new DecimalFormat("#.######");String lngStr = df.format(Double.parseDouble(lng));String latStr = df.format(Double.parseDouble(lat));String r = latStr + "," + lngStr;return r;}return null;}/*** 调用百度地图驾车路线规划服务接口，根据寄件人地址和收件人地址坐标计算订单距离** @param origin* @param destination* @return*/public static Double getDistance(String origin, String destination) {String httpUrl = "http://api.map.baidu.com/directionlite/v1/driving?origin="+ origin + "&destination="+ destination + "&ak=" + AK;String json = loadJSON(httpUrl);Map map = JSON.parseObject(json, Map.class);if ("0".equals(map.getOrDefault("status", "500").toString())) {Map childMap = (Map) map.get("result");JSONArray jsonArray = (JSONArray) childMap.get("routes");JSONObject jsonObject = (JSONObject) jsonArray.get(0);double distance = Double.parseDouble(jsonObject.get("distance") == null ? "0" : jsonObject.get("distance").toString());return distance;}return null;}/*** 调用百度地图驾车路线规划服务接口，根据寄件人地址和收件人地址坐标计算订单距离** @param origin* @param destination* @return*/public static Integer getTime(String origin, String destination) {String httpUrl = "http://api.map.baidu.com/directionlite/v1/driving?origin="+ origin + "&destination="+ destination + "&ak=" + AK;String json = loadJSON(httpUrl);Map map = JSON.parseObject(json, Map.class);if ("0".equals(map.getOrDefault("status", "500").toString())) {Map childMap = (Map) map.get("result");JSONArray jsonArray = (JSONArray) childMap.get("routes");JSONObject jsonObject = (JSONObject) jsonArray.get(0);int time = Integer.parseInt(jsonObject.get("duration") == null ? "0" : jsonObject.get("duration").toString());return time;}return null;}/*** 调用服务接口，返回百度地图服务端的结果** @param httpUrl* @return*/public static String loadJSON(String httpUrl) {StringBuilder json = new StringBuilder();try {URL url = new URL(httpUrl);URLConnection urlConnection = url.openConnection();BufferedReader in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));String inputLine = null;while ((inputLine = in.readLine()) != null) {json.append(inputLine);}in.close();} catch (MalformedURLException e) {} catch (IOException e) {}System.out.println(json.toString());return json.toString();}
}