Http && Https(绕过证书) 请求工具类 （Java）

public class HttpRequestUtil {

    private static final String HTTP = "http";
    private static final String HTTPS = "https";
    private static SSLConnectionSocketFactory sslsf = null;
    private static PoolingHttpClientConnectionManager cm = null;
    private static SSLContextBuilder builder = null;
    static {
        try {
            builder = new SSLContextBuilder();
            // 全部信任 不做身份鉴定
            builder.loadTrustMaterial(null, new TrustStrategy() {
                @Override
                public boolean isTrusted(X509Certificate[] x509Certificates, String s) throws CertificateException {
                    return true;
                }
            });
            sslsf = new SSLConnectionSocketFactory(builder.build(), new String[]{"SSLv2Hello", "SSLv3", "TLSv1", "TLSv1.2"}, null, NoopHostnameVerifier.INSTANCE);
            Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
                    .register(HTTP, new PlainConnectionSocketFactory())
                    .register(HTTPS, sslsf)
                    .build();
            cm = new PoolingHttpClientConnectionManager(registry);
            cm.setMaxTotal(200);//max connection 设置最大连接数
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * httpClient post请求
     * @param url 请求url
     * @param params 请求参数 form提交适用
     * @param encoding 请求实体 json/xml提交适用
     * @return 可能为空 需要处理
     * @throws Exception
     *
     */
    public static String post(String  url, String params, String encoding) throws Exception {
        String result = "";
        CloseableHttpClient httpClient = null;
        try {
            httpClient = getHttpClient();
            HttpPost httpPost = new HttpPost(url);
            // 设置头信息
            httpPost.addHeader("Content-Type", "application/json;charset=" + encoding);
            // 消息实体
            httpPost.setEntity(new StringEntity(params, encoding));
            //发起请求
            HttpResponse httpResponse = httpClient.execute(httpPost);
            //解析返回消息实体
            HttpEntity resEntity = httpResponse.getEntity();
            if (resEntity != null) {
                result= EntityUtils.toString(resEntity);
                log.info("result==="+result);
            }
        } catch (Exception e) {
            throw e;
        } finally {
            if (httpClient != null) {
                httpClient.close();
            }
        }
        return result;
    }
    public static CloseableHttpClient getHttpClient() throws Exception {
        CloseableHttpClient httpClient = HttpClients.custom()
                .setSSLSocketFactory(sslsf)
                .setConnectionManager(cm)
                .setConnectionManagerShared(true)
                .build();
        return httpClient;
    }
}