根据IP定位获取城市代码

时间:2023-03-08 19:06:45
根据IP定位获取城市代码
public String getCityID() throws IOException{
URL url = new URL("http://61.4.185.48:81/g/");
HttpURLConnection urlcon = (HttpURLConnection) url.openConnection();
// 获取连接
InputStream is = urlcon.getInputStream();
BufferedReader buffer = new BufferedReader(new InputStreamReader(is));
StringBuffer bs = new StringBuffer();
String l = null;
while ((l = buffer.readLine()) != null) {
bs.append(l);
}
String getStr = bs.toString();
System.out.println(getStr);
// var ip="121.33.190.178";var id=101280101;if(typeof(id_callback)!="undefined"){id_callback();}
// 获取var id=后面的城市ID
String cityID= getStr.substring(getStr.indexOf("id=") + 3,
getStr.indexOf(";if"));
return cityID; }

我们在浏览器输入

http://61.4.185.48:81/g/可以得到以下信息:

var ip="你当前外网IP";var id=101280101;if(typeof(id_callback)!="undefined"){id_callback();}

上述程序就是将“101280101”这个城市代码解析出来。

附:

中国天气网API:http://www.weather.com.cn/data/sk/101110101.html(其中101110101是城市代码)----->可行

http://www.weather.com.cn/data/cityinfo/101010100.html---------->可行

http://m.weather.com.cn/data/101110101.html(网页上显示的是JSON数据,但控制台打印输出不是JSON数据)

try{
URL url = new URL("http://www.weather.com.cn/data/sk/101110101.html");
URLConnection conn = url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(),"utf-8"));//转码。
String line = null;
while ((line = reader.readLine()) != null)
strBuf.append(line + " ");
reader.close();
}catch(MalformedURLException e) {
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
} String strJson= strBuf.toString();