content: package com.ruoyi.common.utils.http;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.net.ConnectException;
  import java.net.SocketTimeoutException;
  import java.net.URL;
  import java.net.URLConnection;
  import java.nio.charset.StandardCharsets;
  import java.security.cert.X509Certificate;
  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 org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import com.ruoyi.common.constant.Constants;
  import com.ruoyi.common.utils.StringUtils;
  
  /**
   * 通用http发送方法
   * 
   * @author ruoyi
   */
  public class HttpUtils
  {
      private static final Logger log = LoggerFactory.getLogger(HttpUtils.class);
  
      /**
       * 向指定 URL 发送GET方法的请求
       *
       * @param url 发送请求的 URL
       * @return 所代表远程资源的响应结果
       */
      public static String sendGet(String url)
      {
          return sendGet(url, StringUtils.EMPTY);
      }
  
      /**
       * 向指定 URL 发送GET方法的请求
       *
       * @param url 发送请求的 URL
       * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
       * @return 所代表远程资源的响应结果
       */
      public static String sendGet(String url, String param)
      {
          return sendGet(url, param, Constants.UTF8);
      }
  
      /**
       * 向指定 URL 发送GET方法的请求
       *
       * @param url 发送请求的 URL
       * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
       * @param contentType 编码类型
       * @return 所代表远程资源的响应结果
       */
      public static String sendGet(String url, String param, String contentType)
      {
          StringBuilder result = new StringBuilder();
          BufferedReader in = null;
          try
          {
              String urlNameString = StringUtils.isNotBlank(param) ? url + "?" + param : url;
              log.info("sendGet - {}", urlNameString);
              URL realUrl = new URL(urlNameString);
              URLConnection connection = realUrl.openConnection();
              connection.setRequestProperty("accept", "*/*");
              connection.setRequestProperty("connection", "Keep-Alive");
              connection.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
              connection.connect();
              in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
              String line;
              while ((line = in.readLine()) != null)
              {
                  result.append(line);
              }
              log.info("recv - {}", result);
          }
          catch (ConnectException e)
          {
              log.error("调用HttpUtils.sendGet ConnectException, url=" + url + ",param=" + param, e);
          }
          catch (SocketTimeoutException e)
          {
              log.error("调用HttpUtils.sendGet SocketTimeoutException, url=" + url + ",param=" + param, e);
          }
          catch (IOException e)
          {
              log.error("调用HttpUtils.sendGet IOException, url=" + url + ",param=" + param, e);
          }
          catch (Exception e)
          {
              log.error("调用HttpsUtil.sendGet Exception, url=" + url + ",param=" + param, e);
          }
          finally
          {
              try
              {
                  if (in != null)
                  {
                      in.close();
                  }
              }
              catch (Exception ex)
              {
                  log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
              }
          }
          return result.toString();
      }
  
      /**
       * 向指定 URL 发送POST方法的请求
       *
       * @param url 发送请求的 URL
       * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
       * @return 所代表远程资源的响应结果
       */
      public static String sendPost(String url, String param)
      {
          PrintWriter out = null;
          BufferedReader in = null;
          StringBuilder result = new StringBuilder();
          try
          {
              log.info("sendPost - {}", url);
              URL realUrl = new URL(url);
              URLConnection conn = realUrl.openConnection();
              conn.setRequestProperty("accept", "*/*");
              conn.setRequestProperty("connection", "Keep-Alive");
              conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
              conn.setRequestProperty("Accept-Charset", "utf-8");
              conn.setRequestProperty("contentType", "utf-8");
              conn.setDoOutput(true);
              conn.setDoInput(true);
              out = new PrintWriter(conn.getOutputStream());
              out.print(param);
              out.flush();
              in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8));
              String line;
              while ((line = in.readLine()) != null)
              {
                  result.append(line);
              }
              log.info("recv - {}", result);
          }
          catch (ConnectException e)
          {
              log.error("调用HttpUtils.sendPost ConnectException, url=" + url + ",param=" + param, e);
          }
          catch (SocketTimeoutException e)
          {
              log.error("调用HttpUtils.sendPost SocketTimeoutException, url=" + url + ",param=" + param, e);
          }
          catch (IOException e)
          {
              log.error("调用HttpUtils.sendPost IOException, url=" + url + ",param=" + param, e);
          }
          catch (Exception e)
          {
              log.error("调用HttpsUtil.sendPost Exception, url=" + url + ",param=" + param, e);
          }
          finally
          {
              try
              {
                  if (out != null)
                  {
                      out.close();
                  }
                  if (in != null)
                  {
                      in.close();
                  }
              }
              catch (IOException ex)
              {
                  log.error("调用in.close Exception, url=" + url + ",param=" + param, ex);
              }
          }
          return result.toString();
      }
  
      public static String sendSSLPost(String url, String param)
      {
          StringBuilder result = new StringBuilder();
          String urlNameString = url + "?" + param;
          try
          {
              log.info("sendSSLPost - {}", urlNameString);
              SSLContext sc = SSLContext.getInstance("SSL");
              sc.init(null, new TrustManager[] { new TrustAnyTrustManager() }, new java.security.SecureRandom());
              URL console = new URL(urlNameString);
              HttpsURLConnection conn = (HttpsURLConnection) console.openConnection();
              conn.setRequestProperty("accept", "*/*");
              conn.setRequestProperty("connection", "Keep-Alive");
              conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64)");
              conn.setRequestProperty("Accept-Charset", "utf-8");
              conn.setRequestProperty("contentType", "utf-8");
              conn.setDoOutput(true);
              conn.setDoInput(true);
  
              conn.setSSLSocketFactory(sc.getSocketFactory());
              conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
              conn.connect();
              InputStream is = conn.getInputStream();
              BufferedReader br = new BufferedReader(new InputStreamReader(is));
              String ret = "";
              while ((ret = br.readLine()) != null)
              {
                  if (ret != null && !ret.trim().equals(""))
                  {
                      result.append(new String(ret.getBytes(StandardCharsets.ISO_8859_1), StandardCharsets.UTF_8));
                  }
              }
              log.info("recv - {}", result);
              conn.disconnect();
              br.close();
          }
          catch (ConnectException e)
          {
              log.error("调用HttpUtils.sendSSLPost ConnectException, url=" + url + ",param=" + param, e);
          }
          catch (SocketTimeoutException e)
          {
              log.error("调用HttpUtils.sendSSLPost SocketTimeoutException, url=" + url + ",param=" + param, e);
          }
          catch (IOException e)
          {
              log.error("调用HttpUtils.sendSSLPost IOException, url=" + url + ",param=" + param, e);
          }
          catch (Exception e)
          {
              log.error("调用HttpsUtil.sendSSLPost Exception, url=" + url + ",param=" + param, e);
          }
          return result.toString();
      }
  
      private static class TrustAnyTrustManager implements X509TrustManager
      {
          @Override
          public void checkClientTrusted(X509Certificate[] chain, String authType)
          {
          }
  
          @Override
          public void checkServerTrusted(X509Certificate[] chain, String authType)
          {
          }
  
          @Override
          public X509Certificate[] getAcceptedIssuers()
          {
              return new X509Certificate[] {};
          }
      }
  
      private static class TrustAnyHostnameVerifier implements HostnameVerifier
      {
          @Override
          public boolean verify(String hostname, SSLSession session)
          {
              return true;
          }
      }
  }