java根据地址获取百度API经纬度

直接上代码：

package com.jiaojun.auto;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONObject;

/** 
* 获取经纬度
* 
* @author jueyue 返回格式：Map map map.put("status", 
* reader.nextString());//状态 map.put("result", list);//查询结果 
* list> 
* 密钥:C0a9eecc5b366bde412021d4d7e5d8c4 
*/ 
public class MapBaidu {


	public static void main(String[] args) throws IOException {
		MapBaidu getLatAndLngByBaidu = new MapBaidu();
		
		Map map=getLatAndLngByBaidu.getLngAndLat("海湖新区");
		System.out.println("经度："+map.get("lng")+"---纬度："+map.get("lat"));
	}
	
	public static Map getLngAndLat(String address){
		Map map=new HashMap();
		 String url = "http://api.map.baidu.com/geocoder/v2/?address="+address+"&output=json&ak=C0a9eecc5b366bde412021d4d7e5d8c4";
	        String json = loadJSON(url);
	        JSONObject obj = JSONObject.fromObject(json);
	        if(obj.get("status").toString().equals("0")){
	        	double lng=obj.getJSONObject("result").getJSONObject("location").getDouble("lng");
	        	double lat=obj.getJSONObject("result").getJSONObject("location").getDouble("lat");
	        	map.put("lng", lng);
	        	map.put("lat", lat);
	        	//System.out.println("经度："+lng+"---纬度："+lat);
	        }else{
	        	//System.out.println("未找到相匹配的经纬度！");
	        }
		return map;
	}
	
	 public static String loadJSON (String url) {
	        StringBuilder json = new StringBuilder();
	        try {
	            URL oracle = new URL(url);
	            URLConnection yc = oracle.openConnection();
	            BufferedReader in = new BufferedReader(new InputStreamReader(
	                                        yc.getInputStream()));
	            String inputLine = null;
	            while ( (inputLine = in.readLine()) != null) {
	                json.append(inputLine);
	            }
	            in.close();
	        } catch (MalformedURLException e) {
	        } catch (IOException e) {
	        }
	        return json.toString();
	    }
	 
	 
}

或者你可以去百度地图API申请AK来获取经纬度：

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;

/**
 * 获取经纬度
 *
 * @author jueyue 返回格式：Map map map.put("status",
 * reader.nextString());//状态 map.put("result", list);//查询结果
 * list>
 * 密钥:C0a9eecc5b366bde41202sljdflsjfsldjf   需要自己去申请
 * Created by hellcat on 2016/7/27.
 */
public class GetLatAndLngByBaidu {

    public static Map getLngAndLat(String address){
        Map map=new HashMap();
        String url = "http://api.map.baidu.com/geocoder/v2/?address="+address+"&output=json&ak=你申请的AK";
        try {
            String json = loadJSON(url);
            JSONObject obj = JSONObject.fromObject(json);
            if(obj.get("status").toString().equals("0")){
                double lng=obj.getJSONObject("result").getJSONObject("location").getDouble("lng");
                double lat=obj.getJSONObject("result").getJSONObject("location").getDouble("lat");
                map.put("lng", getDecimal(lng));
                map.put("lat", getDecimal(lat));
                //System.out.println("经度："+lng+"---纬度："+lat);
            }else{
                LogUtil.debug("未找到相匹配的经纬度！");
                //System.out.println("未找到相匹配的经纬度！");
            }
        }catch (Exception e){
            LogUtil.error("未找到相匹配的经纬度，请检查地址");
        }
        return map;
    }

    public static double getDecimal(double num) {
        if (Double.isNaN(num)) {
            return 0;
        }
        BigDecimal bd = new BigDecimal(num);
        num = bd.setScale(6, BigDecimal.ROUND_HALF_UP).doubleValue();
        return num;
    }

    public static String loadJSON (String url) {
        StringBuilder json = new StringBuilder();
        try {
            URL oracle = new URL(url);
            URLConnection yc = oracle.openConnection();
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    yc.getInputStream(),"UTF-8"));
            String inputLine = null;
            while ( (inputLine = in.readLine()) != null) {
                json.append(inputLine);
            }
            in.close();
        } catch (MalformedURLException e) {
        } catch (IOException e) {
        }
        return json.toString();
    }
}