java调用百度地图API根据地理位置获取经纬度

  	   <dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.5.3</version>
		</dependency>

	/**
	 * http://lbsyun.baidu.com/apiconsole/key
	 * <百度开发者>用户申请注册的key，自v2开始参数修改为“ak”，之前版本参数为“key” 申请ak
	 */
	final static String AK = "edGc5mIugVxx7lwUx9YpraKeWmExG64o";


	/**
	 * 地理编码 URL
	 */
	final static String ADDRESS_TO_LONGITUDEA_URL = "http://api.map.baidu.com/geocoding/v3/?output=json&location=showLocation";

	/**
	 * 地理编码
	 * @param address  (广东省广州市黄埔区)
	 *         详细的位置信息
	 * @return
	 */
	public ReturnLocationBean AddressTolongitudea(String address) {

         if(StringUtils.isBlank(address)){
        	
        	 return null;
         }
        
		String url = ADDRESS_TO_LONGITUDEA_URL + "&ak=" + AK + "&address="+ address;
		log.info("请求url:" + url);
		HttpClient client = HttpClients.createDefault(); // 创建默认http连接
		HttpPost post = new HttpPost(url);// 创建一个post请求

		try {
			HttpResponse response = client.execute(post);// 用http连接去执行get请求并且获得http响应
			HttpEntity entity = response.getEntity();// 从response中取到响实体
			String html = EntityUtils.toString(entity);// 把响应实体转成文本
			log.info("返回信息：" + html);
			// JSON转对象
			return JSON.parseObject(html, ReturnLocationBean.class);
		} catch (Exception e) {

			log.error("地理编码[异常],", e);
			return null;
		}

	/**
	 * 逆地理编码 URL
	 */
	final static String LONGITUDE_TO_ADDRESS_URL = "http://api.map.baidu.com/reverse_geocoding/v3/?output=json&coordtype=BD09&pois=1";
   
     	
	/**
	 * 逆地理编码
	 * @param lat 
	 *        纬度 23.1067,
	 * @param lng 
	 *        经度 113.325
	 * @return
	 */ 
    public ReturnLocationBean longitudeToAddress(float lat, float lng) {

		String url = LONGITUDE_TO_ADDRESS_URL + "&ak=" + AK + "&location=" + lat + "," + lng;
		log.info("请求url:" + url);
		HttpClient client = HttpClients.createDefault(); // 创建默认http连接
		HttpPost post = new HttpPost(url);// 创建一个post请求

		try {

			HttpResponse response = client.execute(post);// 用http连接去执行get请求并且获得http响应
			HttpEntity entity = response.getEntity();// 从response中取到响实体
			String html = EntityUtils.toString(entity);// 把响应实体转成文本
			log.info("返回信息：" + html);
			// JSON转对象
			return JSON.parseObject(html, ReturnLocationBean.class);
		} catch (Exception e) {

			log.error("逆地理编码[异常],", e);
			return null;
		}

	}

 之所以会写这个是因为我公众号的经纬度是腾讯提供的。。。。所以要转一次。。。。。

     void fun() throws IOException{
	   	
	   	   String url = "http://api.map.baidu.com/geoconv/v1/?coords=113.538248,23.132953&from=1&to=5&ak=edGc5mIugVxx7lwUx9YpraKeWmExG64o";
	   	
	       HttpClient client = HttpClients.createDefault();// 创建默认http连接
	       HttpPost post = new HttpPost(url);// 创建一个post请求
	      
	       HttpResponse response = client.execute(post);// 用http连接去执行get请求并且获得http响应
	       HttpEntity entity = response.getEntity();// 从response中取到响实体
	       String html = EntityUtils.toString(entity);// 把响应实体转成文本
	       System.out.println("返回信息"+html);
	  }