httpclient unable to find valid certification path to requested target

java中如何 忽略ssl
避免出现

unable to find valid certification path to requested target

/**
* https://www.cnblogs.com/vincent-li666/p/11758497.html
* 忽略ssl 的 CloseableHttpClient
* @return
*/

public static CloseableHttpClient createIgnoreSSLHttpClient() {
    try {
        SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
            @Override
            public boolean isTrusted(X509Certificate[] chain,
                                     String authType) throws CertificateException {
                return true;
            }
        }).build();
        SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext, NoopHostnameVerifier.INSTANCE);
        return HttpClients.custom().setSSLSocketFactory(sslConnectionSocketFactory).build();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}