通过 httpclientget 方法 向服务器中请求数据

/*   * 通过 httpclientget 方法 向服务器中请求数据   */

 public String getweb(String username, String userpass, String url) {  

 String str = "";  

 StringBuffer sb = new StringBuffer(url);

  sb.append("?username=");  

 sb.append(username);  

 sb.append("&userpass=");

  sb.append(userpass);

  HttpGet get = new HttpGet(sb.toString());

  HttpParams pare = new BasicHttpParams();   

HttpConnectionParams.setConnectionTimeout(pare, 5000);  

 HttpConnectionParams.setSoTimeout(pare, 5000);

  HttpClient client = new DefaultHttpClient();

  try {  

  HttpResponse res = client.execute(get);

   if (res.getStatusLine().getStatusCode() == 200) {   

  HttpEntity enti = res.getEntity();   

  str = EntityUtils.toString(enti, "utf-8");

   }

  } catch (Exception e) {  

  // TODO Auto-generated catch block   

 e.printStackTrace();   }

  return str;

 }

 /*   * 判断网络是否连接   */  

public class NetWorkUtil {

 public static final String LOGIN_URL = "http://101.200.142.201:8080/tqyb/login";

 public static boolean isNetAvailable(Context context){
  //获得网络管理器
  ConnectivityManager connM =
    (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkInfo netInfo = connM.getActiveNetworkInfo();//得到网络详情
  
  if(netInfo == null || !netInfo.isAvailable())
   return false;
  
  return true;
 }