RestTemplate忽略Https证书

1. 实现自定义的SimpleClientHttpRequestFactory

   private static SimpleClientHttpRequestFactory getUnsafeClientHttpRequestFactory() {
       TrustManager[] byPassTrustManagers = new TrustManager[]{new X509TrustManager() {
   
           @Override
           public X509Certificate[] getAcceptedIssuers() {
               return new X509Certificate[0];
           }
   
           @Override
           public void checkClientTrusted(X509Certificate[] chain, String authType) {
           }
   
           @Override
           public void checkServerTrusted(X509Certificate[] chain, String authType) {
           }
       }};
       final SSLContext sslContext;
       try {
           sslContext = SSLContext.getInstance("TLS");
           sslContext.init(null, byPassTrustManagers, new SecureRandom());
           sslContext.getSocketFactory();
       } catch (NoSuchAlgorithmException | KeyManagementException e) {
           throw new RuntimeException(e);
       }
   
       return new SimpleClientHttpRequestFactory() {
           @Override
           protected void prepareConnection(HttpURLConnection connection,
                                            String httpMethod) throws IOException {
               super.prepareConnection(connection, httpMethod);
               if (connection instanceof HttpsURLConnection) {
                   ((HttpsURLConnection) connection).setSSLSocketFactory(
                           sslContext.getSocketFactory());
               }
           }
       };
   }

2. 在RestTemplate中设置requestFactory

   RestTemplate restTemplate = new RestTemplate();
   SimpleClientHttpRequestFactory requestFactory = getUnsafeClientHttpRequestFactory();
   restTemplate.setRequestFactory(requestFactory);