Java.HttpClient绕过Https证书解决方案二

方案2

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate; import java.util.*; 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; public class HttpRequest { /** * 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 URL 所代表远程资源的响应结果 */ public static String Get(String url, String param) { return Get(url, param, false); } /** * 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 URL 所代表远程资源的响应结果 */ public static String Get(String url, String param, Boolean isHttpsRequest) { String result = ""; BufferedReader in = null; try { if (isHttpsRequest) { HttpRequest.Instance().TrustHpps(); } String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); // 打开和URL之间的连接 URLConnection connection = realUrl.openConnection(); // 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(); // 获取所有响应头字段 Map<String, List<String>> map = connection.getHeaderFields(); // 遍历所有的响应头字段 for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } // 定义 BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader( connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送GET请求出现异常！" + e); e.printStackTrace(); } // 使用finally块来关闭输入流 finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } /** * 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 Post(String url, String param) { return Post(url, param, false); } /** * 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。 * @param isHttpsRequest 是否Https请求 * @return 所代表远程资源的响应结果 */ public static String Post(String url, String param, Boolean isHttpsRequest) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { if (isHttpsRequest) {  HttpRequest.Instance().TrustHpps(); } URL realUrl = new URL(url); // 打开和URL之间的连接 URLConnection conn = realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数  out.print(param); // flush输出流的缓冲  out.flush(); // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送 POST 请求出现异常！" + e); e.printStackTrace(); } // 使用finally块来关闭输出流、输入流 finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } /** * 信任证书管理 * */  private static TrustManager[] TrustAllCerts = new TrustManager[] { new X509TrustManager() { @Override public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException { // TODO Auto-generated method stub } @Override public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException { // TODO Auto-generated method stub } @Override public X509Certificate[] getAcceptedIssuers() { // TODO Auto-generated method stub return null; } } }; /** * 主机证书认证 * */ private class NullHostNameVerifier implements HostnameVerifier { /* * (non-Javadoc) * @see javax.net.ssl.HostnameVerifier#verify(java.lang.String, * javax.net.ssl.SSLSession) */ @Override public boolean verify(String arg0, SSLSession arg1) { // TODO Auto-generated method stub return true; } } private static HttpRequest _HttpRequest; /** * Http请求封装实例 * */ public static HttpRequest Instance() { if (_HttpRequest == null) { _HttpRequest = new HttpRequest(); } return _HttpRequest; } /** * 信任HTTPS * */  public void TrustHpps() throws Exception { HttpsURLConnection .setDefaultHostnameVerifier(new NullHostNameVerifier()); SSLContext sc = SSLContext.getInstance("TLS"); sc.init(null, HttpRequest.TrustAllCerts, new SecureRandom()); HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); } }

测试代码

        String  address="https网页地址";
         //绕过Https证书方案2
        String reslt2= HttpRequest.Get(address,null,true);
        System.out.println(reslt2);   
        //说明请求过程中没发生异常，且网页正常返回，就说明成功绕过Https证书；紫红色部分代码是关键代码