java实现跳过证书校验

　

/**
     * 跳过证书效验的sslcontext
     * @return
     * @throws Exception
     */
    private static SSLContext createIgnoreVerifySSL() throws Exception {
        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;
    }

    /**
     * 构造RestTemplate
     * @return
     * @throws Exception
     */
    private static RestTemplate getRestTemplate() throws Exception {
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
        //超时
        factory.setConnectionRequestTimeout(5000);
        factory.setConnectTimeout(5000);
        factory.setReadTimeout(5000);
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                createIgnoreVerifySSL(),
                // 指定TLS版本
                null,
                // 指定算法
                null,
                // 取消域名验证
                new HostnameVerifier(){
                    @Override
                    public boolean verify(String string, SSLSession ssls) {
                        return true;
                    }
                }
        );
        CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
                .build();
        factory.setHttpClient(httpClient);
        RestTemplate restTemplate = new RestTemplate(factory);
        // 解决中文乱码问题
        restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
        return restTemplate;
    }