public void login() {         String target = "http://192.168.1.77/android/json_users/login_users.aspx";         HttpPost httprequest = new HttpPost(target);         List<NameValuePair> paramsList = new ArrayList<NameValuePair>();         paramsList.add(new BasicNameValuePair("user_name", EditText1.getText()                 .toString()));         paramsList.add(new BasicNameValuePair("password", EditText2.getText()                 .toString()));         try {             httprequest                     .setEntity(new UrlEncodedFormEntity(paramsList, "UTF-8"));             HttpClient HttpClient1 = new DefaultHttpClient();             HttpResponse httpResponse = HttpClient1.execute(httprequest);             if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {                 result = EntityUtils.toString(httpResponse.getEntity());             } else {                 result = "请求失败";             }             Toast.makeText(LoginActivity.this, result, Toast.LENGTH_SHORT)                     .show();         } catch (UnsupportedEncodingException e1) {             e1.printStackTrace();         } catch (ClientProtocolException e) {             e.printStackTrace();         } catch (IOException e) {             e.printStackTrace();         }     }

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