Android用户登陆和注册界面

package wzhg.com; import java.io.IOException; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; public class HttpUtil { public static final String BASE_URL="http://192.168.1.100:8080/AndroidWorld_Server/"; public static HttpGet getHttpGet(String url){ HttpGet request = new HttpGet(url); return request; } public static HttpPost getHttpPost(String url){ HttpPost request = new HttpPost(url); return request; } public static HttpResponse getHttpResponse(HttpGet request) throws ClientProtocolException, IOException{ HttpResponse response = new DefaultHttpClient().execute(request); return response; } public static HttpResponse getHttpResponse(HttpPost request) throws ClientProtocolException, IOException{ HttpResponse response = new DefaultHttpClient().execute(request); return response; } public static String queryStringForPost(String url){ HttpPost request = HttpUtil.getHttpPost(url); String result = null; try { HttpResponse response = HttpUtil.getHttpResponse(request); if(response.getStatusLine().getStatusCode()==200){ result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } public static String queryStringForPost(HttpPost request){ String result = null; try { HttpResponse response = HttpUtil.getHttpResponse(request); if(response.getStatusLine().getStatusCode()==200){ result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } public static String queryStringForGet(String url){ HttpGet request = HttpUtil.getHttpGet(url); String result = null; try { HttpResponse response = HttpUtil.getHttpResponse(request); if(response.getStatusLine().getStatusCode()==200){ result = EntityUtils.toString(response.getEntity()); return result; } } catch (ClientProtocolException e) { e.printStackTrace(); result = "网络异常！"; return result; } catch (IOException e) { e.printStackTrace(); result = "网络异常！"; return result; } return null; } }