更新了代码，以将数据传递到servlet并从服务器读取响应数据。
public void actionPerformed(ActionEvent ae) { String uname = text1.getText(); String pwd = text2.getText(); HttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost( "http://localhost:8089/SwingChat/LoginAction?uname=" + uname + "&pwd=" + pwd); try { // Add your data List<NamevaluePair> namevaluePairs = new ArrayList<NamevaluePair>(2); namevaluePairs.add(new BasicNamevaluePair("uname", uname)); namevaluePairs.add(new BasicNamevaluePair("pwd", pwd)); post.setEntity(new UrlEnpredFormEntity(namevaluePairs)); // executing the POST request HttpResponse rsp = client.execute(post); // reading response data HttpEntity entity = rsp.getEntity(); InputStream inputStream = entity.getContent(); String response = convertStreamToString(inputStream); System.out.println("Response from server : " + response); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }}private static String convertStreamToString(InputStream is) { BufferedReader reader = new BufferedReader(new InputStreamReader(is)); StringBuilder sb = new StringBuilder(); String line = null; try { while ((line = reader.readLine()) != null) { sb.append(line + "n"); } } catch (IOException e) { e.printStackTrace(); } finally { try { is.close(); } catch (IOException e) { e.printStackTrace(); } } return sb.toString();}请检查
