import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.URLEncoder; import java.security.KeyStore; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Map.Entry; import org.apache.http.HttpResponse; import org.apache.http.HttpVersion; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.scheme.PlainSocketFactory; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.scheme.SchemeRegistry; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager; import org.apache.http.message.BasicNameValuePair; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.HttpParams; import org.apache.http.params.HttpProtocolParams; import org.apache.http.protocol.HTTP; import org.apache.http.util.EntityUtils; import android.content.Context; import android.net.ConnectivityManager; /**  * 网络工具类  *  * @author malinkang  *  */ public class NetUtils {     /**      * 对网络连接状态进行判断      *      * @return true, 可用； false， 不可用      */     public static boolean isOpenNetwork(Context context) {         ConnectivityManager connManager = (ConnectivityManager) context                 .getSystemService(Context.CONNECTIVITY_SERVICE);         if (connManager.getActiveNetworkInfo() != null) {             return connManager.getActiveNetworkInfo().isAvailable();         }         return false;     }     /**      * get请求      *      * @param urlString      * @param params      * @return      */     public static String getRequest(String urlString, Map<String, String> params) {         try {             StringBuilder urlBuilder = new StringBuilder();             urlBuilder.append(urlString);             if (null != params) {                 urlBuilder.append("?");                 Iterator<Entry<String, String>> iterator = params.entrySet()                         .iterator();                 while (iterator.hasNext()) {                     Entry<String, String> param = iterator.next();                     urlBuilder                             .append(URLEncoder.encode(param.getKey(), "UTF-8"))                             .append('=')                             .append(URLEncoder.encode(param.getValue(), "UTF-8"));                     if (iterator.hasNext()) {                         urlBuilder.append('&');                     }                 }             }             // 创建HttpClient对象             HttpClient client = getNewHttpClient();             // 发送get请求创建HttpGet对象             HttpGet getMethod = new HttpGet(urlBuilder.toString());             HttpResponse response = client.execute(getMethod);             // 获取状态码             int res = response.getStatusLine().getStatusCode();             if (res == 200) {                 StringBuilder builder = new StringBuilder();                 // 获取响应内容                 BufferedReader reader = new BufferedReader(                         new InputStreamReader(response.getEntity().getContent()));                 for (String s = reader.readLine(); s != null; s = reader                         .readLine()) {                     builder.append(s);                 }                 return builder.toString();             }         } catch (Exception e) {         }         return null;     }     /**      * post请求      *      * @param urlString      * @param params      * @return      */     public static String postRequest(String urlString,             List<BasicNameValuePair> params) {         try {             // 1. 创建HttpClient对象             HttpClient client = getNewHttpClient();             // 2. 发get请求创建HttpGet对象             HttpPost postMethod = new HttpPost(urlString);             postMethod.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));             HttpResponse response = client.execute(postMethod);             int statueCode = response.getStatusLine().getStatusCode();             if (statueCode == 200) {                 System.out.println(statueCode);                 return EntityUtils.toString(response.getEntity());             }         } catch (Exception e) {         }         return null;     }     // 保存时+当时的秒数，     public static long expires(String second) {         Long l = Long.valueOf(second);         return l * 1000L + System.currentTimeMillis();     }     private static HttpClient getNewHttpClient() {         try {             KeyStore trustStore = KeyStore.getInstance(KeyStore                     .getDefaultType());             trustStore.load(null, null);             SSLSocketFactory sf = new SSLSocketFactoryEx(trustStore);             sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);             HttpParams params = new BasicHttpParams();             HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);             HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);             SchemeRegistry registry = new SchemeRegistry();             registry.register(new Scheme("http", PlainSocketFactory                     .getSocketFactory(), 80));             registry.register(new Scheme("https", sf, 443));             ClientConnectionManager ccm = new ThreadSafeClientConnManager(                     params, registry);             return new DefaultHttpClient(ccm, params);         } catch (Exception e) {             return new DefaultHttpClient();         }     } }

public class HttpUtils {     private final static String TAG = "EasyTokenSevice";     private final static int connectionTimeout = 5000;     private static InputStream inputStream = null;     private static String urlStr = null;     private static boolean isConnecting;     /**      * 封装http get请求      *      * @param url      * @return is      */     public static InputStream get(String url)throws IOException ,Exception {         urlStr = url;         isConnecting = true;             HttpGet httpGet = new HttpGet(urlStr);             HttpParams httpParameters = new BasicHttpParams();             HttpConnectionParams.setConnectionTimeout(httpParameters,                     connectionTimeout);             DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);             HttpResponse response = httpClient.execute(httpGet);             if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {                 HttpEntity entity = response.getEntity();                 inputStream = entity.getContent();                 return inputStream;}             else return null;                             } }