According to city

get ip Because a website , you need to get city based on customer ip, and directly displayed. In the online search fees are in addition to using pure ip address database , looked not too clear, please help gurus , there is no other way , or give a pure ip address database program ! Thank you !
------ Solution ---------------------------------------- ---- nationwide distribution ip assignment with phone numbers
is about the same, are based on the number of regions have different segments

You need to match the look ip given is based on that area . .
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this is java , you can reference .
http://showtime520.iteye.com/blog/340548
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  <script type=text/javascript src=http://fw.qq.com/ipaddress></script>
  <script type=text/javascript>
  document.write(IPData.join(' '));
  </script> 
  

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I have this interface can get into the program code also !
If you need to be able to find me !
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package Test;

import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.soap.SOAP11Constants;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;

public class IPtest {

private static EndpointReference targetRPR =
new EndpointReference ("http://www.webxml.com.cn/WebServices/IpAddressSearchWebService.asmx?wsdl"); / / web service address

public void getResult () throws Exception
{
ServiceClient sender = new ServiceClient ();
sender.setOptions (buildOptions ());

OMElement result = sender.sendReceive (buildParam ());
System.out.println (result.toString ());
}
private OMElement buildParam () {
OMFactory fac = OMAbstractFactory.getOMFactory ();

OMNamespace omNs = fac.createOMNamespace ("http://WebXml.com.cn/", " " ) ;
OMElement data = fac.createOMElement ("getCountryCityByIp", omNs); / / method name
OMElement inner = fac.createOMElement ("theIpAddress", omNs); ;/ / parameter names
inner.setText ("58.195.128.56"); ; ; / / input parameters into
data.addChild (inner);

return data;
}
private Options buildOptions () {
Options options = new Options ();
options.setSoapVersionURI (SOAP11Constants.SOAP_ENVELOPE_NAMESPACE_URI);
options.setAction ("http://WebXml.com.cn/getCountryCityByIp");
options.setTo (targetRPR);
options.setTransportInProtocol (Constants.TRANSPORT_HTTP);

return options;
}
/ **
* @ param args
* /
public static void main (String [] args) {
IPtest t = new IPtest ();
try {
t.getResult ();
} catch (Exception e) {
/ / TODO Auto-generated catch block
e.printStackTrace ();
}

}

}

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  The reply was deleted at the moderator 2011-06-17 13:14:47

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which I also know that the key is to not know how to use java code
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we also use this IP library .
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except pure ip address database , what a way to die ?
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seek expert !
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unrealistic ip, show only the city, how to write it?
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  <script type=text/javascript src=http://fw.qq.com/ipaddress></script>
  <script type=text/javascript>
  document.write(IPData[2] + IPData[3]);
  </script> 
  

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wait master. . . . . .
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Xie 11th floor , I mainly want the background code !
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private static void getData(String querySQL) throws Exception{
          URL url = new URL("http://api.liqwei.com/location/");
          // 打开连接，此处只是创建一个实例，并没有真正的连接
  	HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
  	httpCon.setDoOutput(true);//打开写入属性
  	httpCon.setRequestMethod("GET");//设置提交方法
          String params = "ip=" +rs.getString("ip_address"); 
  	// 此处调用getOutputStream会隐含的进行connect操作，所以不用在上面显示调用connect()
  	httpCon.getOutputStream().write(params.getBytes());
  	httpCon.getOutputStream().flush();
  	httpCon.getOutputStream().close();
  	//如果inputStream读操作在outputStream的写操作之前，会抛java.net.ProtocolException
  	//将内存缓冲区中封装好的完整的HTTP请求电文发送到服务端。 
  	InputStream inputStream = httpCon.getInputStream();
  	InputStreamReader inputReader = new InputStreamReader(inputStream,"gbk");
  	BufferedReader bufferReader = new BufferedReader(inputReader);
  	        String inputLine = null;  
  		StringBuffer sb = new StringBuffer();
  		while ((inputLine = bufferReader.readLine()) != null) {   
  			sb.append(inputLine);
  		}   
  		bufferReader.close();  
  		inputReader.close();
  		inputStream.close();
  		System.out.println(sb.toString());
  }

Before you run this method , go to the next http://api.liqwei.com/location/, that there are many interfaces for you to use , you find the IP 's , you know , how to get city. Sb is printed above the query to the data.
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thank you very much !
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direct use interface calls , now Taobao , Sina interface calls are accurate.
For example, you can go to the next http://ip.taobao.com/service/getIpInfo.php?ip=211.138.125.150 their official website api