import java.io.BufferedReader;  import java.io.InputStreamReader;  import java.net.URL;  import java.security.cert.CertificateException;  import java.util.Map;    import javax.net.ssl.HostnameVerifier;  import javax.net.ssl.HttpsURLConnection;  import javax.net.ssl.SSLContext;  import javax.net.ssl.SSLSession;  import javax.net.ssl.TrustManager;  import javax.net.ssl.X509TrustManager;  import java.security.cert.X509Certificate;    public class HttpsGetData {      private static class TrustAnyTrustManager implements X509TrustManager {                    public void checkClientTrusted(X509Certificate[] chain, String authType)                  throws CertificateException {          }             public void checkServerTrusted(X509Certificate[] chain, String authType)                  throws CertificateException {          }             public X509Certificate[] getAcceptedIssuers() {              return new X509Certificate[] {};          }      }         private static class TrustAnyHostnameVerifier implements HostnameVerifier {          public boolean verify(String hostname, SSLSession session) {              return true;          }      }      String _url="";            Map<String,String> _params;            public HttpsGetData(String url,Map<String,String> keyValueParams)      {          this._url=url;          this._params=keyValueParams;      }      public String Do() throws Exception      {           String result = "";           BufferedReader in = null;              try {                                    String urlStr = this._url + "&" + getParamStr();                  System.out.println("GET请求的URL为："+urlStr);                  SSLContext sc = SSLContext.getInstance("SSL");                  sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },                           new java.security.SecureRandom());                  URL realUrl = new URL(urlStr);                  // 打开和URL之间的连接                  HttpsURLConnection connection = (HttpsURLConnection) realUrl.openConnection();                  //设置https相关属性                  connection.setSSLSocketFactory(sc.getSocketFactory());                  connection.setHostnameVerifier(new TrustAnyHostnameVerifier());                  connection.setDoOutput(true);                                    // 设置通用的请求属性                  connection.setRequestProperty("accept", "*/*");                  connection.setRequestProperty("connection", "Keep-Alive");                  connection.setRequestProperty("user-agent",                          "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");                  // 建立实际的连接                  connection.connect();                                    // 定义 BufferedReader输入流来读取URL的响应                  in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8"));                  String line;                  while ((line = in.readLine()) != null) {                      result += line;                  }                  System.out.println("获取的结果为："+result);              } catch (Exception e) {                  System.out.println("发送GET请求出现异常！" + e);                  //e.printStackTrace();                  throw e;              }              // 使用finally块来关闭输入流              finally {                  try {                      if (in != null) {                          in.close();                      }                  } catch (Exception e2) {                      //e2.printStackTrace();                      throw e2;                  }              }              return result;            }        private String getParamStr()      {          String paramStr="";          // 获取所有响应头字段          Map<String, String> params = this._params;          // 获取参数列表组成参数字符串          for (String key : params.keySet()) {              paramStr+=key+"="+params.get(key)+"&";          }          //去除最后一个"&"          paramStr=paramStr.substring(0, paramStr.length()-1);                    return paramStr;      }  }