百度地图gps信息纠正

package com.baiduMap纠错;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import com.google.gson.Gson;
import com.sun.xml.internal.messaging.saaj.util.Base64;



class BaiduMapModifyValue{
	String error;
	String x;
	String y;
	public String getError() {
		return error;
	}
	public void setError(String error) {
		this.error = error;
	}
	public String getX() {
		return x;
	}
	public void setX(String x) {
		this.x = x;
	}
	public String getY() {
		return y;
	}
	public void setY(String y) {
		this.y = y;
	}
}


public class BMapGISModify {
	
	 public static String ConvertToString(InputStream inputStream){  
	        InputStreamReader inputStreamReader = new InputStreamReader(inputStream);  
	        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);  
	        StringBuilder result = new StringBuilder();  
	        String line = null;  
	        try {  
	            while((line = bufferedReader.readLine()) != null){  
	                result.append(line + "\n");  
	            }  
	        } catch (IOException e) {  
	            e.printStackTrace();  
	        } finally {  
	            try{  
	                inputStreamReader.close();  
	                inputStream.close();  
	                bufferedReader.close();  
	            }catch(IOException e){  
	                e.printStackTrace();  
	            }  
	        }  
	        return result.toString();  
	    }  


	 
	 /*
	  * 入参 gis信息， "x,y" xy分别表示经纬度
	  * 出参gis纠正信息，内容 "x,y" xy分别表示经纬度
	  * */
	 public static String modifyGIS(String valueXY){
		 System.out.println("原始gis值:"+valueXY);
		 String[] gisXY = valueXY.split(",");
		 String gisX = gisXY[0];
		 String gisY = gisXY[1];
		 /* 修正连接地址
		  * from和to对应的值分别是：0真实坐标；2google坐标；4baidu坐标。
		 	from：被转换的坐标体系
		 	to：转换到这个坐标体系
		 	x：经度
		 	y：纬度*/
		 String urlValue = "http://api.map.baidu.com/ag/coord/convert?from=0&to=4&x="+gisX+"&y="+gisY;
		 HttpURLConnection urlConnection = null;
		 //json解析回传值
		 String responseStr = "";
		 try{  
	            URL url = new URL(urlValue);  
	             urlConnection = (HttpURLConnection)url.openConnection();  
	            //GET Request Define:   
	            //urlConnection.setRequestMethod("GET");  
	            urlConnection.connect();  
	              
	            //Connection Response From Test Servlet  
	            //System.out.println("Connection Response From Test Servlet");  
	            InputStream inputStream = urlConnection.getInputStream();  
	              
	            //Convert Stream to String  
	            responseStr = ConvertToString(inputStream);  
	            //System.out.println(responseStr);  
	        }catch(IOException e){  
	           System.out.println("百度gis纠正，url强求解析，出现异常");  
	        }finally{
	        	urlConnection.disconnect();
	        } 
		 
		 BaiduMapModifyValue result = new Gson().fromJson(responseStr, BaiduMapModifyValue.class);
		 if(!result.error .equals("0")){
			 System.out.println("百度地图纠正gis，返回结果标记位非0，异常");
			 return "resultError";
		 }else{
			 String gisXY_OK = Base64.base64Decode(result.getX())+","+Base64.base64Decode(result.getY());
			 System.out.println("纠正gis值:"+gisXY_OK);
			 return gisXY_OK;
		 }
		 
	 }
	 public static void main(String[] args) {
		 /*	百度地图拾取坐标系统网址连接
		  * http://api.map.baidu.com/lbsapi/getpoint/index.html?qq-pf-to=pcqq.group
		  * 勾选‘坐标反查’，可以进行数值坐标反查地理坐标
		  * */
		  String gisInfo = "133.94404224820853,21.537722890239518";
		  modifyGIS(gisInfo);
	}
}