Android(安卓)封装http请求的工具类

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 params) {        try {            StringBuilder urlBuilder = new StringBuilder();            urlBuilder.append(urlString);            if (null != params) {                urlBuilder.append("?");                Iterator> iterator = params.entrySet()                        .iterator();                while (iterator.hasNext()) {                    Entry param = iterator.next();                    urlBuilder                            .append(URLEncoder.encode(param.getKey(), "UTF-8"))                            .append('=')                            .append(URLEncoder.encode(param.getValue(), "UTF-8"));                    if (iterator.hasNext()) {                        urlBuilder.append('&');                    }                }            }                        // 重要部分，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 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();        }    }}
本工具类需要传递url的参数，还有一个工具类需要在定义url前传参数将完整的url路径传递过来。
参考链接：http://www.cnblogs.com/yejiurui/archive/2013/04/12/3015924.html
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