JAVA联网查询IP地址归属详解编程语言

原理是根据淘宝提供的service查询IP的归属地并且解析http请求返回的json串。

我之前也是伸手党，现在也给伸手党提供下方便。

淘宝返回的数据为：

{“code”:0,”data”:{“country”:”/u4e2d/u56fd”,”country_id”:”CN”,”area”:”/u534e/u4e1c”,”area_id”:”300000″,”region”:”/u5c71/u4e1c/u7701″,”region_id”:”370000″,”city”:”/u4e1c/u8425/u5e02″,”city_id”:”370500″,”county”:””,”county_id”:”-1″,”isp”:”/u8054/u901a”,”isp_id”:”100026″,”ip”:”60.214.183.158″}}

用法：

String arr1 = GetAddressByIp.GetAddressByIp(“120.192.182.1”);

System.out.println(arr1);

详细请看代码

  
package getAddressByIp; 
   
import java.io.ByteArrayOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.net.HttpURLConnection; 
import java.net.MalformedURLException; 
import java.net.URL; 
   
import net.sf.json.JSONObject; 
   
public class GetAddressByIp 
{ 
       
       
    /** 
     *  
     * @param IP 
     * @return 
     */ 
    public static String GetAddressByIp(String IP){ 
        String resout = ""; 
        try{ 
         String str = getJsonContent("http://ip.taobao.com/service/getIpInfo.php?ip="+IP); 
         System.out.println(str); 
            
         JSONObject obj = JSONObject.fromObject(str); 
         JSONObject obj2 =  (JSONObject) obj.get("data"); 
         String code = (String) obj.get("code"); 
         if(code.equals("0")){ 
            
             resout =  obj2.get("country")+"--" +obj2.get("area")+"--" +obj2.get("city")+"--" +obj2.get("isp"); 
         }else{ 
             resout =  "IP地址有误"; 
         } 
        }catch(Exception e){ 
               
            e.printStackTrace(); 
             resout = "获取IP地址异常："+e.getMessage(); 
        } 
        return resout; 
            
    } 
      
    public static String getJsonContent(String urlStr) 
    { 
        try 
        {// 获取HttpURLConnection连接对象 
            URL url = new URL(urlStr); 
            HttpURLConnection httpConn = (HttpURLConnection) url 
                    .openConnection(); 
            // 设置连接属性 
            httpConn.setConnectTimeout(3000); 
            httpConn.setDoInput(true); 
            httpConn.setRequestMethod("GET"); 
            // 获取相应码 
            int respCode = httpConn.getResponseCode(); 
            if (respCode == 200) 
            { 
                return ConvertStream2Json(httpConn.getInputStream()); 
            } 
        } 
        catch (MalformedURLException e) 
        { 
            e.printStackTrace(); 
        } 
        catch (IOException e) 
        { 
            e.printStackTrace(); 
        } 
        return ""; 
    } 
   
      
    private static String ConvertStream2Json(InputStream inputStream) 
    { 
        String jsonStr = ""; 
        // ByteArrayOutputStream相当于内存输出流 
        ByteArrayOutputStream out = new ByteArrayOutputStream(); 
        byte[] buffer = new byte[1024]; 
        int len = 0; 
        // 将输入流转移到内存输出流中 
        try 
        { 
            while ((len = inputStream.read(buffer, 0, buffer.length)) != -1) 
            { 
                out.write(buffer, 0, len); 
            } 
            // 将内存流转换为字符串 
            jsonStr = new String(out.toByteArray()); 
        } 
        catch (IOException e) 
        { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 
        return jsonStr; 
    } 
}