//在webService中写到：

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.xml.ws.WebServiceContext;
import javax.xml.ws.handler.MessageContext;

import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.springframework.beans.factory.annotation.Autowired;

@Resource
 private WebServiceContext context; 

 容器自动把WebSericeContext 注入到该属性中.

  public void  getIpAddress(){

　　MessageContext ctx = context.getMessageContext();

      HttpServletRequest request = (HttpServletRequest) ctx.get(AbstractHTTPDestination.HTTP_REQUEST); 

      String ip=request.getRemoteAddr(); //获得地址

  }

附：通过IP获得详细的市和县：

　　//先写这个类,这是通过网上的一个接口进行IP查询所在地

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

/**
 * @author 丁宗彪
 * @version 创建时间: 2014-5-8 下午04:18:45
 */
public class AddressByIpUtil {

 public static String getIpAddr(HttpServletRequest request) {
  String ip = request.getHeader("x-forwarded-for");
  
  if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

  ip = request.getHeader("Proxy-Client-IP");

  }

  if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

  ip = request.getHeader("WL-Proxy-Client-IP");

  }

  if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

  ip = request.getRemoteAddr();

  }

  return ip;

}

 /**
  *
  * @param content
  *            请求的参数 格式为：name=xxx&pwd=xxx
  * @param encoding
  *            服务器端请求编码。如GBK,UTF-8等
  * @return
  */
 public static String getAddresses(String content, String encodingString) {
  content="ip="+content;
  // 这里调用pconline的接口
  String urlStr = "http://whois.pconline.com.cn/ipJson.jsp";
  // 从http://whois.pconline.com.cn取得IP所在的省市区信息
  String returnStr = AddressByIpUtil.getResult(urlStr, content, encodingString);
  if (returnStr != null) {
   // 处理返回的省市区信息
   int startIndex = returnStr.indexOf("\"pro");
   int endIndex = returnStr.indexOf(",\"addr");
   if (startIndex > 0 && endIndex > 0 && endIndex > startIndex) {
    returnStr = returnStr.substring(startIndex, endIndex);
    returnStr = returnStr.replaceAll("\"", "").replace("pro:", "")
      .replace("city:", "").replace("region:", "");
   }
  }
  return returnStr.substring(0,returnStr.length()-1);
 }

 /**
  * @param urlStr
  *            请求的地址
  * @param content
  *            请求的参数 格式为：name=xxx&pwd=xxx
  * @param encoding
  *            服务器端请求编码。如GBK,UTF-8等
  * @return
  */
 private static String getResult(String urlStr, String content, String encoding) {
  URL url = null;
  HttpURLConnection connection = null;
  try {
   url = new URL(urlStr);
   connection = (HttpURLConnection) url.openConnection();// 新建连接实例
   connection.setConnectTimeout(2000);// 设置连接超时时间，单位毫秒
   connection.setReadTimeout(2000);// 设置读取数据超时时间，单位毫秒

   connection.setDoOutput(true);// 是否打开输出流 true|false
   connection.setDoInput(true);// 是否打开输入流true|false
   connection.setRequestMethod("POST");// 提交方法POST|GET
   connection.setUseCaches(false);// 是否缓存true|false
   connection.connect();// 打开连接端口

   DataOutputStream out = new DataOutputStream(connection
     .getOutputStream());// 打开输出流往对端服务器写数据
   out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx
   out.flush();// 刷新
   out.close();// 关闭输出流
   BufferedReader reader = new BufferedReader(new InputStreamReader(
     connection.getInputStream(), encoding));// 往对端写完数据对端服务器返回数据
   // ,以BufferedReader流来读取
   StringBuffer buffer = new StringBuffer();
   String line = "";
   while ((line = reader.readLine()) != null) {
    buffer.append(line);
   }
   reader.close();
   return buffer.toString();
  } catch (IOException e) {
   e.printStackTrace();
  } finally {
   if (connection != null) {
    connection.disconnect();// 关闭连接
   }
  }
  return null;
 }

}

//这是测试类

public static void main(String[] args) throws Exception {
  AddressByIpUtil addressUtils = new AddressByIpUtil();
  // 测试ip
  String ip = "111.204.22.226";
  String address = addressUtils.getAddresses(ip, "GBK");
  System.out.println(address);

 }