JAVA API about HTTP 2

 import java.io.IOException;
 import java.nio.charset.Charset;
 import java.security.KeyManagementException;
 import java.security.KeyStoreException;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import javax.net.ssl.SSLContext;

 import org.apache.commons.lang.StringUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.NameValuePair;
 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.client.utils.URIBuilder;
 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
 import org.apache.http.conn.ssl.SSLContextBuilder;
 import org.apache.http.conn.ssl.TrustStrategy;
 import org.apache.http.entity.StringEntity;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.message.BasicNameValuePair;
 import org.apache.http.util.EntityUtils;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 import com.fasterxml.jackson.databind.ObjectMapper;

 public class HttpClient {

     private final static String ENCODE = "utf-8";

     private final static Charset CHARSET = Charset.forName("utf-8");

     private final static int SOCKET_TIME_OUT = 12000;

     private final static int SOCKET_CONNECT_OUT = 12000;

     private final static int CONNECTION_REQUEST_OUT = 12000;

     private static RequestConfig defaultRequestConfig = RequestConfig.custom().setSocketTimeout(SOCKET_TIME_OUT)
             .setConnectTimeout(SOCKET_CONNECT_OUT).setConnectionRequestTimeout(CONNECTION_REQUEST_OUT).build();

     private static ObjectMapper objectMapper = new ObjectMapper();

     private static final Logger LOG = LoggerFactory.getLogger(HttpClient.class);

     @SuppressWarnings("deprecation")
     public static SSLConnectionSocketFactory sslInit() {
         SSLContext sslContext = null;
         try {
             sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
                 // 信任所有
                 public boolean isTrusted(java.security.cert.X509Certificate[] chain, String authType) throws java.security.cert.CertificateException {
                     return true;
                 }
             }).build();

         } catch (KeyManagementException e) {
             e.printStackTrace();
         } catch (NoSuchAlgorithmException e) {
             e.printStackTrace();
         } catch (KeyStoreException e) {
             e.printStackTrace();
         }
         return new SSLConnectionSocketFactory(sslContext);
     }

     /**
      * @Description     post请求函数
      * @param scheme    http/https
      * @param host      请求域名
      * @param path      请求路径
      * @param params    URL请求参数
      * @param jsonBody  HTTP请求BODY
      * @param headers   HTTP请求头部
      * @return
      */
     public static HashMap post(String scheme, String host, String path, Map<String, String> params, String jsonBody,  Map<String, String> headers) {
         HashMap resultMap = new HashMap();
         CloseableHttpClient closeableHttpClient = null;
         try {
             SSLConnectionSocketFactory sslsf = sslInit();
             closeableHttpClient = HttpClientBuilder.create().setDefaultRequestConfig(defaultRequestConfig).setSSLSocketFactory(sslsf).build();

             //添加URL参数
             List<NameValuePair> values = new ArrayList<NameValuePair>();
             if (params != null && !params.isEmpty()) {
                 for (String s : params.keySet()) {
                     values.add(new BasicNameValuePair(s, params.get(s)));
                 }
             }
             //创建URI
             java.net.URI uri = new URIBuilder()
             .setScheme(scheme)
             .setHost(host)
             .setPath(path)
             .setParameters(values)
             .build();

             HttpPost httpPost = new HttpPost(uri);
             //添加头部
             if (headers != null && !headers.isEmpty()) {
                 for (String s : headers.keySet()) {
                     httpPost.addHeader(s, headers.get(s));
                 }
             }
             //添加URL参数
             /*if (params != null && !params.isEmpty()) {
                 List<NameValuePair> values = new ArrayList<NameValuePair>();
                 for (String s : params.keySet()) {
                     values.add(new BasicNameValuePair(s, params.get(s)));
                 }
                 httpPost.setEntity(new UrlEncodedFormEntity(values, ENCODE));
             }*/

             //添加请求BODY
             if (jsonBody != null) {
                 httpPost.setEntity(new StringEntity(jsonBody, Charset.forName("utf-8")));
             }

             LOG.info("HTTP Request URI:{}",httpPost.getURI().toString());
             LOG.info("HTTP Request Body: {}",jsonBody);

             //发出请求
             CloseableHttpResponse response = closeableHttpClient.execute(httpPost);
             HttpEntity entity = response.getEntity();
             String content = EntityUtils.toString(entity, ENCODE);
             LOG.info("HTTP Response:{}",content);

             if(StringUtils.isNotBlank(content)){
             resultMap = objectMapper.readValue(content, HashMap.class);
             }
         } catch (Exception e) {
             LOG.info("Error msg:[{}]",e.getMessage());
             e.printStackTrace();
         } finally {
             try {
                 if (closeableHttpClient != null) {
                     closeableHttpClient.close();
                 }
             } catch (IOException e) {
                 e.printStackTrace();
             }
         }
         return resultMap;
     }

     /**
      * @Description   http get请求函数
      * @param scheme  http/https
      * @param host    域名
      * @param path    资源路径
      * @param params  请求参数
      * @param headers 请求头部
      * @return
      */
     public static HashMap get(String scheme, String host, String path, Map<String, String> params, Map<String, String> headers) {
         HashMap resultMap = new HashMap();
         CloseableHttpClient closeableHttpClient = null;
         try {
             SSLConnectionSocketFactory sslsf = sslInit();
             closeableHttpClient = HttpClientBuilder.create().setDefaultRequestConfig(defaultRequestConfig).setSSLSocketFactory(sslsf).build();

             //添加URL参数
             List<NameValuePair> values = new ArrayList<NameValuePair>();
             if (params != null && !params.isEmpty()) {
                 for (String s : params.keySet()) {
                     values.add(new BasicNameValuePair(s, params.get(s)));
                 }
             }

             //创建URI
             java.net.URI uri = new URIBuilder()
             .setScheme(scheme)
             .setHost(host)
             .setPath(path)
             .setParameters(values)
             .build();

             LOG.info("URI is:{}",uri.toString());
             //创建GET请求对象
             HttpGet httpGet = new HttpGet(uri);

             //添加头部
             if (headers != null && !headers.isEmpty()) {
                 for (String s : headers.keySet()) {
                     httpGet.addHeader(s, headers.get(s));
                 }
             }

             //发出请求
             LOG.info("HTTP Request:{}",httpGet.getURI().toString());
             CloseableHttpResponse response = closeableHttpClient.execute(httpGet);
             HttpEntity entity = response.getEntity();
             String content = EntityUtils.toString(entity, ENCODE);
              LOG.info("HTTP Response:{}",content);

             if(StringUtils.isNotBlank(content)){
             resultMap = objectMapper.readValue(content, HashMap.class);
             }
         } catch (Exception e) {
             LOG.info("Error msg:[{}]",e.getMessage());
             e.printStackTrace();
         } finally {
             try {
                 if (closeableHttpClient != null) {
                     closeableHttpClient.close();
                 }
             } catch (IOException e) {
             e.printStackTrace();
             }
         }
         return resultMap;
     }

 }