HTTP请求工具类

闲着没有事情，封装了一个HttpClient请求工具类，包含了超时时间，设置代理，支持HTTP与HTTPS, 已经GET和POST两种网络请求方式，复制代码到你的项目就能用！！

package com.mars.test;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.HashMap;import java.util.List;import org.apache.http.HttpHost;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;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.params.ConnManagerParams;import org.apache.http.conn.params.ConnPerRouteBean;import org.apache.http.conn.params.ConnRoutePNames;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.CoreProtocolPNames;import org.apache.http.params.HttpConnectionParams;import org.apache.http.protocol.HTTP;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.Proxy;import android.text.TextUtils;/** * HTTP请求工具类 *  * @author Administrator *  */public class HttpUtils {private static final String TAG = "HttpUtils";private static final int DEFAULT_SOCKET_BUFFER_SIZE = 8 * 1024; // 8KBprivate static final int MAX_CONNECTIONS = 10; // HTTP请求最大并发连接数private static final int SOCKET_TIMEOUT = 55 * 1000; // 55sprivate static final String MAP_KEY_APN = "apn";private static final String MAP_KEY_APN_PROXY = "apn_proxy";private static final String MAP_KEY_APN_PORT = "apn_port";@SuppressWarnings("deprecation")public static HashMap<String, Object> getNetInfo(Context context) {HashMap<String, Object> hashMap = null;ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo activeNetworkInfo = manager.getActiveNetworkInfo();if (null != activeNetworkInfo) {if (ConnectivityManager.TYPE_MOBILE == activeNetworkInfo.getType()) {String apn = activeNetworkInfo.getExtraInfo();String apnProxy = Proxy.getDefaultHost();int apnPort = Proxy.getDefaultPort();hashMap = new HashMap<String, Object>();hashMap.put(MAP_KEY_APN, apn);hashMap.put(MAP_KEY_APN_PROXY, apnProxy);hashMap.put(MAP_KEY_APN_PORT, apnPort);}}return hashMap;}/** * 创建并初始化HttpClient对象 *  * @return */public static DefaultHttpClient create(Context context, String url) {DefaultHttpClient httpClient = null;BasicHttpParams httpParams = new BasicHttpParams();ConnManagerParams.setTimeout(httpParams, SOCKET_TIMEOUT);ConnManagerParams.setMaxConnectionsPerRoute(httpParams,new ConnPerRouteBean(MAX_CONNECTIONS));ConnManagerParams.setMaxTotalConnections(httpParams, 10);HttpConnectionParams.setSoTimeout(httpParams, SOCKET_TIMEOUT);HttpConnectionParams.setConnectionTimeout(httpParams, SOCKET_TIMEOUT);HttpConnectionParams.setTcpNoDelay(httpParams, true);HttpConnectionParams.setSocketBufferSize(httpParams,DEFAULT_SOCKET_BUFFER_SIZE);String agentProperty = System.getProperty("http.agent");if (!TextUtils.isEmpty(agentProperty)) {httpParams.setParameter(CoreProtocolPNames.USER_AGENT,System.getProperty("http.agent"));}if (null != url && url.startsWith("https://")) {// 支持HTTP与HTTPSSchemeRegistry schemeRegistry = new SchemeRegistry();schemeRegistry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));schemeRegistry.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));// ThreadSafeClientConnManager线程安全管理类ThreadSafeClientConnManager cm = new ThreadSafeClientConnManager(httpParams, schemeRegistry);httpClient = new DefaultHttpClient(cm, httpParams);} else {httpClient = new DefaultHttpClient(httpParams);}HashMap<String, Object> netInfo = getNetInfo(context);if (null != netInfo) {String apn = (String) netInfo.get(MAP_KEY_APN);String apnProxy = (String) netInfo.get(MAP_KEY_APN_PROXY);int apnPort = (Integer) netInfo.get(MAP_KEY_APN_PORT);// 判断是否需要设置代理信息if (null != apn && !"".equals(apnProxy) && null != apnProxy&& -1 != apnPort) {// 设置代理信息HttpHost host = new HttpHost(apnProxy, apnPort);httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, host);}}return httpClient;}/** * 将JSON 发送至后台服务器 *  * @param jsonString * @return 服务器可能返回的响应数据 * @throws IOException * @throws IllegalStateException */public static String sendJson2Server(Context context, String jsonString,List<BasicNameValuePair> params, String sendAddress)throws IllegalStateException, IOException {if (null != sendAddress) {HttpPost post = new HttpPost(sendAddress);// ByteArrayEntity entity = null;ByteArrayOutputStream out = null;InputStream in = null;LogUtil.info(TAG, "sending data to " + sendAddress);try {// entity = new ByteArrayEntity(jsonString.getBytes("utf-8"));post.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));HttpClient client = create(context, sendAddress);HttpResponse response = client.execute(post);int responseCode = response.getStatusLine().getStatusCode();LogUtil.info(TAG, "response code: " + responseCode);if (200 == responseCode) {in = response.getEntity().getContent();byte[] buf = new byte[1024];int len;out = new ByteArrayOutputStream();while (-1 != (len = in.read(buf))) {out.write(buf, 0, len);}byte[] byteArray = out.toByteArray();return new String(byteArray, "utf-8");}} finally {if (null != out) {try {out.close();} catch (IOException e) {e.printStackTrace();}}if (null != in) {try {in.close();} catch (IOException e) {e.printStackTrace();}}}}return null;}/** * 从服务器获取数据 *  * @return * @throws IOException */public static String getDataFromServer(Context context, String url)throws IOException {HttpGet get = new HttpGet(url);HttpResponse execute = null;ByteArrayOutputStream out = null;InputStream content = null;try {HttpClient httpClient = create(context, url);execute = httpClient.execute(get);if (200 == execute.getStatusLine().getStatusCode()) {content = execute.getEntity().getContent();out = new ByteArrayOutputStream();byte[] buf = new byte[1024];int len;while (-1 != (len = content.read(buf))) {out.write(buf, 0, len);}return new String(out.toByteArray(), "utf-8");}} finally {if (out != null) {out.close();}if (content != null) {content.close();}}return null;}}

设置尝试重连

client.setHttpRequestRetryHandler(myRetryHandler);

/** * 尝试重连 */public static HttpRequestRetryHandler myRetryHandler = new HttpRequestRetryHandler() {@Overridepublic boolean retryRequest(IOException exception, int executionCount,HttpContext context) {if (executionCount >= 3) {// 如果超过最大重试次数，那么就不要继续了return false;}if (exception instanceof NoHttpResponseException) {// 如果服务器丢掉了连接，那么就重试return true;}if (exception instanceof SSLHandshakeException) {// 不要重试SSL握手异常return false;}HttpRequest request = (HttpRequest) context.getAttribute(ExecutionContext.HTTP_REQUEST);boolean idempotent = !(request instanceof HttpEntityEnclosingRequest);if (idempotent) {// 如果请求被认为是幂等的，那么就重试return true;}return false;}};