import org.apache.http.*;import org.apache.http.client.config.RequestConfig;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.ConnectionKeepAliveStrategy;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;import org.apache.http.impl.client.HttpClientBuilder;import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;import org.apache.http.message.BasicNameValuePair;import org.apache.http.protocol.HttpContext;import org.apache.http.util.EntityUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.Map;import java.util.concurrent.TimeUnit;/** * Https请求工具类 * @author DUCHONG * @since 2018-05-03 13:04:42 */public class HttpUtils {	private static Logger logger=LoggerFactory.getLogger(HttpUtils.class);    //private static final CloseableHttpClient httpclient = HttpClients.createDefault();    private static  CloseableHttpClient httpclient =null;    static {        ConnectionKeepAliveStrategy connectionKeepAliveStrategy = new ConnectionKeepAliveStrategy() {            @Override            public long getKeepAliveDuration(HttpResponse httpResponse, HttpContext httpContext) {                return 20 * 1000; // tomcat默认keepAliveTimeout为20s            }        };        PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(20, TimeUnit.SECONDS);        connManager.setMaxTotal(200);        connManager.setDefaultMaxPerRoute(200);        RequestConfig requestConfig = RequestConfig.custom()                .setConnectTimeout(10 * 1000)                .setSocketTimeout(10 * 1000)                .setConnectionRequestTimeout(10 * 1000)                .build();        HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();        httpClientBuilder.setConnectionManager(connManager);        httpClientBuilder.setDefaultRequestConfig(requestConfig);        httpClientBuilder.setRetryHandler(new DefaultHttpRequestRetryHandler());        httpClientBuilder.setKeepAliveStrategy(connectionKeepAliveStrategy);        //HttpClient httpClient = httpClientBuilder.build();        httpclient=httpClientBuilder.build();    }    /**     * 发送HttpGet请求     * @param url     * @return     */    public static String sendGet(String url) {        HttpGet httpget = new HttpGet(url);        CloseableHttpResponse response = null;        try {            response = httpclient.execute(httpget);        } catch (IOException e1) {            e1.printStackTrace();        }        String result = null;        try {            HttpEntity entity = response.getEntity();            if (entity != null) {                result = EntityUtils.toString(entity);            }        } catch (ParseException | IOException e) {            e.printStackTrace();        } finally {            try {                response.close();            } catch (IOException e) {                e.printStackTrace();            }        }        return result;    }    /**     * 发送HttpPost请求，参数为map     * @param url     * @param map     * @return     */    public static String sendPost(String url, Map
     
       map) {        List
      
        formParams = new ArrayList
       
        ();        for (Map.Entry
        
          entry : map.entrySet()) {            formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));        }        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);        HttpPost httppost = new HttpPost(url);        httppost.setEntity(entity);        CloseableHttpResponse response = null;        try {            response = httpclient.execute(httppost);        } catch (IOException e) {            e.printStackTrace();        }        HttpEntity entity1 = response.getEntity();        String result = null;        try {            result = EntityUtils.toString(entity1);        } catch (ParseException | IOException e) {            e.printStackTrace();        }        return result;    }    /**     * 发送不带参数的HttpPost请求     * @param url     * @return     */    public static String sendPost(String url) {        HttpPost httppost = new HttpPost(url);        CloseableHttpResponse response = null;        try {            response = httpclient.execute(httppost);        } catch (IOException e) {            e.printStackTrace();        }        HttpEntity entity = response.getEntity();        String result = null;        try {            result = EntityUtils.toString(entity);        } catch (ParseException | IOException e) {            e.printStackTrace();        }        return result;    }    /**     * 编码     * @param bstr     * @return String     */    public static String encode(byte[] bstr){    	return new sun.misc.BASE64Encoder().encode(bstr);    }    /**     * 解码     * @param str     * @return string     */    public static byte[] decode(String str){	    byte[] bt = null;	    try {	        sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();	        bt = decoder.decodeBuffer( str );	    } catch (IOException e) {	        e.printStackTrace();	    }        return bt;    }}
        
       
      
     

　　
           
             
      
       org.apache.httpcomponents
              
      
       httpclient
              
      
       4.4
            
     	        
             
      
       org.apache.httpcomponents
              
      
       httpcore
              
      
       4.4
            
     

　　Commons的HttpClient项目现在是生命的尽头，不再被开发。它已取代由Apache HttpComponents项目HttpClient和的HttpCore模组，提供更好的性能和更大的灵活性。