我花了一个小时试图解决同样的问题.这是我想出来的:

I have spent an hour trying to fix the same issue. This is what I come up with:

final SSLConnectionSocketFactory sslsf;
try {
    sslsf = new SSLConnectionSocketFactory(SSLContext.getDefault(),
            NoopHostnameVerifier.INSTANCE);
} catch (NoSuchAlgorithmException e) {
    throw new RuntimeException(e);
}

final Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
        .register("http", new PlainConnectionSocketFactory())
        .register("https", sslsf)
        .build();

final PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(registry);
cm.setMaxTotal(100);
httpClient = HttpClients.custom()
        .setSSLSocketFactory(sslsf)
        .setConnectionManager(cm)
        .build();

希望它可以工作并且不使用任何弃用的代码(httpclient 4.4.1).

Hopefully, it works and does not use any deprecated code (httpclient 4.4.1).