ssl忽略证书 SSLHandshakeException:PKIX path building failed ——java client

忽略证书的代码 

    public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
        SSLContext sc = SSLContext.getInstance("TLS");
        // 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
        X509TrustManager trustManager = new X509TrustManager() {
            @Override
            public void checkClientTrusted(
                    java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                    String paramString) throws CertificateException {
            }
 
            @Override
            public void checkServerTrusted(
                    java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
                    String paramString) throws CertificateException {
            }
 
            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };
        sc.init(null, new TrustManager[]{trustManager}, null);
        return sc;
    }

 将返回值给到httpclient

写法一：

SSLContext ignoreVerifySSL = createIgnoreVerifySSL();
 
HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
httpClientBuilder.setSSLContext(ignoreVerifySSL);  // 设置SSL管理工厂
// ...  设置其他调优参数（比如连接池大小等）
CloseableHttpClient httpClient = httpClientBuilder.build();

写法二： 

        SSLContext ignoreVerifySSL = createIgnoreVerifySSL();
 
        CloseableHttpClient httpClient = HttpClients.custom()
//                .setConnectionManager(connectionManager)
                .setKeepAliveStrategy(myStrategy)
                .setDefaultRequestConfig(RequestConfig.custom().setStaleConnectionCheckEnabled(true).build())
                .setSSLContext(ignoreVerifySSL)
                .build();

后续写法：创建连接，拿到response返回值

        try (CloseableHttpClient closeableHttpClient = httpClientBuilder.build()) {
            HttpEntity entity = new StringEntity(json, "UTF-8");
            HttpPost post = new HttpPost(url);
            post.setEntity(entity);
            post.setHeader("Content-type", "application/json");
            HttpResponse response = closeableHttpClient.execute(post);
            result = EntityUtils.toString(response.getEntity(), "UTF-8");
            System.out.println(result);
            return result;
        } catch (IOException e) {
            e.printStackTrace();
        }

注意：千万不要使用自定义的ConnectionManager，否则会导致SSL管理工厂失效，无法跳过SSL证书认证。

// 千万别设置这个参数！！
httpClientBuilder.setConnectionManager(httpClientConnectionManager);   

原因：HttpClientBuilder中有一段代码，只有当自定义的ConnectionManager为空时，才会使用SSL管理工厂或者sslcontext，否则，不会生效。

    public CloseableHttpClient build() {
        final HttpClientConnectionManager connManagerCopy = this.connManager;
        Object reuseStrategyCopy;
        Object proxyAuthStrategyCopy;
        if (connManagerCopy == null) {
            reuseStrategyCopy = this.sslSocketFactory;
            if (reuseStrategyCopy == null) {
                if (this.sslContext != null) {
                    reuseStrategyCopy = new SSLConnectionSocketFactory(this.sslContext, supportedProtocols, supportedCipherSuites, (HostnameVerifier)proxyAuthStrategyCopy);
                } 
            }
        }
    }

可使用如下工具检测网关的SSL协议版本

SSL Server Test (Powered by Qualys SSL Labs)

参考

解决出现javax.net.ssl.SSLHandshakeException: PKIX path building failed 或 sun.security.validator.ValidatorException: PKIX path building failed的问题

HttpClient跳过SSL证书认证攻略_noophostnameverifier.instance-CSDN博客