public class XmlTransfer{
  private String urlAddr;
  private String xmlStr;
  HttpURLConnection urlCon = null;

  public XmlTransfer(String _urlAddr,String _xmlStr) {
    this.urlAddr = _urlAddr;
    this.xmlStr = _xmlStr;
  }
  public InputStream get() throws Exception
  {
    if(urlCon==null){urlCon=getUrlConnection();}
    if(urlCon==null){throw new Exception("连接失败");}
    PrintWriter out = new PrintWriter(urlCon.getOutputStream());
   

    urlCon.disconnect();
    InputStream fin1 = urlCon.getInputStream();
    return fin1;
  }

  private HttpURLConnection getUrlConnection(){

    try{
      URL url = new URL(urlAddr);
      URLConnection conn = url.openConnection();
      urlCon = (HttpURLConnection)conn;
      urlCon.setRequestProperty("Content-type", "text/html;charset=utf-8");
      urlCon.setDoOutput(true);
      urlCon.setRequestMethod("GET");
      urlCon.setUseCaches(false);
    }
    catch (MalformedURLException mex) {
      mex.printStackTrace();
    }
    catch (ProtocolException pex) {
      pex.printStackTrace();
    }
    catch (IOException iex) {
      iex.printStackTrace();
    }

    return urlCon;
  }


  public   String getHttp( String strURL ){
      XmlTransfer xt=new XmlTransfer(strURL,"");
      StringBuffer sb = new StringBuffer();
      try{
          InputStream is = xt.get();
          
          byte[] b = new byte[1024];
          int iCount = 0;
          while ((iCount = is.read(b)) > 0) {
              sb.append(new String(b, 0, iCount));
          }
      }catch(Exception e){
          sb.append("An error occurs in XmlTransfer.getHttp\n");
          sb.append(e.getMessage());
      }

     return (sb.toString());
  }
  
  
}

StringBuffer temp = new StringBuffer();
InputStream in = new BufferedInputStream(urlCon.getInputStream(););
                Reader rd = new InputStreamReader(in,"UTF-8");
                int c = 0;
                while ((c = rd.read()) != -1) {
                    temp.append((char) c);
                }
                in.close();
temp.toString();//得到xml

------解决方案--------------------
你一个过滤器就ok!

package com.shop.filter;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
/**************************************************
  * author:East
  * date:2008-6-13
  * note: EncodingFilter用来解决中文的乱码
  **************************************************/

public class EncodingFilter extends HttpServlet implements Filter {
   private FilterConfig filterConfig;
   //Handle the passed-in FilterConfig
   public void init(FilterConfig filterConfig) throws Servle