java https忽略证书

小灰灰 2022-11-16 15:12 228阅读 0赞

import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.UnsupportedEncodingException;
    import java.net.HttpURLConnection;
    import java.net.MalformedURLException;
    import java.net.URL;
    import javax.net.ssl.TrustManager;
    import javax.net.ssl.X509TrustManager;
    import java.security.cert.X509Certificate;
    import javax.net.ssl.SSLContext;
    import javax.net.ssl.HttpsURLConnection;
    import javax.net.ssl.HostnameVerifier;
    import javax.net.ssl.SSLSession;
    
    
    public class HttpsUtils {
    
        final static HostnameVerifier DO_NOT_VERIFY = new HostnameVerifier() {
            @Override
    		public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        };
    
        /**
         * https get请求
         * @param requetsUrl
         * @return
         */
        public static String httpGet(String requetsUrl) {
    		InputStream is = null;
    		BufferedReader br = null;
    		StringBuffer result = new StringBuffer();
            HttpURLConnection conn = null;
            try {
                // Create a trust manager that does not validate certificate chains
                trustAllHosts();
                URL url = new URL(requetsUrl);
    
                HttpsURLConnection https = (HttpsURLConnection) url.openConnection();
                if (url.getProtocol().toLowerCase().equals("https")) {
                    https.setHostnameVerifier(DO_NOT_VERIFY);
                    conn = https;
                } else {
                    conn = (HttpURLConnection) url.openConnection();
                }
                conn.connect();
    			if (conn.getResponseCode() == 200) {
    				is = conn.getInputStream();
    				if (null != is) {
    					br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
    					String temp = null;
    					while (null != (temp = br.readLine())) {
    						result.append(temp);
    					}
    				}
    			}
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result.toString();
        }
    
        /**
         * 证书校验
         */
        private static void trustAllHosts() {
    
            // Create a trust manager that does not validate certificate chains
            TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
    
                @Override
    			public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                    return new java.security.cert.X509Certificate[]{};
                }
    
                @Override
    			public void checkClientTrusted(X509Certificate[] chain, String authType) {
                }
    
                @Override
    			public void checkServerTrusted(X509Certificate[] chain, String authType) {
                }
            }};
    
            // Install the all-trusting trust manager
            try {
                SSLContext sc = SSLContext.getInstance("TLS");
                sc.init(null, trustAllCerts, new java.security.SecureRandom());
                HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
    }