GpsUtil.java
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package com.genersoft.iot.vmp.utils;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.Socket;
import java.util.Base64;
import com.genersoft.iot.vmp.gb28181.bean.BaiduPoint;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class GpsUtil {
private static Logger logger = LoggerFactory.getLogger(GpsUtil.class);
public static BaiduPoint Wgs84ToBd09(String xx, String yy) {
try {
Socket s = new Socket("api.map.baidu.com", 80);
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream(), "UTF-8"));
OutputStream out = s.getOutputStream();
StringBuffer sb = new StringBuffer("GET /ag/coord/convert?from=0&to=4");
sb.append("&x=" + xx + "&y=" + yy);
sb.append("&callback=BMap.Convertor.cbk_3976 HTTP/1.1\r\n");
sb.append("User-Agent: Java/1.6.0_20\r\n");
sb.append("Host: api.map.baidu.com:80\r\n");
sb.append("Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2\r\n");
sb.append("Connection: Close\r\n");
sb.append("\r\n");
out.write(sb.toString().getBytes());
String json = "";
String tmp = "";
while ((tmp = br.readLine()) != null) {
// logger.info(tmp);
json += tmp;
}
s.close();
int start = json.indexOf("cbk_3976");
int end = json.lastIndexOf("}");
if (start != -1 && end != -1 && json.contains("\"x\":\"")) {
json = json.substring(start, end);
String[] point = json.split(",");
String x = point[1].split(":")[1].replace("\"", "");
String y = point[2].split(":")[1].replace("\"", "");
BaiduPoint bdPoint= new BaiduPoint();
bdPoint.setBdLng(new String(decode(x)));
bdPoint.setBdLat(new String(decode(y)));
return bdPoint;
//return (new String(decode(x)) + "," + new String(decode(y)));
} else {
logger.info("gps坐标无效！！");
}
out.close();
br.close();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* BASE64解码
* @param str
* @return string
*/
public static byte[] decode(String str) {
byte[] bt = null;
final Base64.Decoder decoder = Base64.getDecoder();
bt = decoder.decode(str); // .decodeBuffer(str);
return bt;
}
}