java http 发送xml报文

public class TestHttp {  
    public void testRegist(){  
        try{  
       StringBuffer sb = new StringBuffer("<?xml version=\"1.0\" encoding=\"UTF-8\" ?> ");  
       sb.append("<getData>");  
       sb.append("<recNum>2010</recNum>");  
       sb.append("</getvData>");  
       byte[] xmlbyte = sb.toString().getBytes("UTF-8");  
              URL url = new URL("http://xx:8180/xuxxx/xxxxxx");  
              HttpURLConnection conn = (HttpURLConnection)url.openConnection();  
              conn.setDoOutput(true);  
              conn.setRequestMethod("POST");  
              DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());  
              outStream.write(xmlbyte);  
              outStream.flush();  
              BufferedReader  in = new BufferedReader(new InputStreamReader(conn.getInputStream()));  
             StringBuffer sb2 = new StringBuffer();  
             String lines = "";  
              while(null!=(lines = in.readLine()))  
              {  
                  sb2.append(lines);  
              }  
            System.out.println(sb2.toString());  
             // in.read(b)  
              in.close();  
              outStream.close();  
             }catch(Exception ex){  
                    ex.printStackTrace();  
           }  
       }