如何忽略 Apache HttpComponents HttpClient 5.1 中的 SSL 证书错误

Question

如何绕过Apache HttpComponents HttpClient 5.1 的证书验证错误？

我发现了一个 working solution 来绕过 HttpClient 4.5 中建议自定义 HttpClient 实例的此类错误：

HttpClient httpClient = HttpClients
            .custom()
            .setSSLContext(new SSLContextBuilder().loadTrustMaterial(null, TrustAllStrategy.INSTANCE).build())
            .setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
            .build();

但它不适用于 HttpClient 5.1，因为 HttpClientBuilder 中不存在 setSSLContext 和 setSSLHostnameVerifier 方法（HttpClients.custom() 返回）。

Answer 1

HC 5.1 中有几个专门的构建器可以用来做同样的事情：

CloseableHttpClient httpclient = HttpClients.custom()
        .setConnectionManager(PoolingHttpClientConnectionManagerBuilder.create()
                .setSSLSocketFactory(SSLConnectionSocketFactoryBuilder.create()
                        .setSslContext(SSLContextBuilder.create()
                                .loadTrustMaterial(TrustAllStrategy.INSTANCE)
                                .build())
                        .setHostnameVerifier(NoopHostnameVerifier.INSTANCE)
                        .build())
                .build())
        .build();