有一种更简单的方法，您可以使用自己的HostnameVerifier隐式信任某些连接。问题来自Java 1.7，其中添加了SNI扩展，而您的错误是由于服务器配置错误造成的。

你可以用“-Djsse”。enableSNIExtension=false”在整个JVM上禁用SNI或阅读我的博客，我解释了如何在URL连接上实现自定义验证器。

下面是针对apache httpclient 4.5.11的解决方案。我有问题与cert的主题通配符*.hostname.com。它返回了我同样的异常，但我不能使用属性System.setProperty(“jsse。enableSNIExtension”、“假”);因为它在谷歌位置客户端出错。

我找到了简单的解决方案(只修改socket):

import io.micronaut.context.annotation.Bean;
import io.micronaut.context.annotation.Factory;
import org.apache.http.client.HttpClient;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;

import javax.inject.Named;
import javax.net.ssl.SSLParameters;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.util.List;

@Factory
public class BeanFactory {

    @Bean
    @Named("without_verify")
    public HttpClient provideHttpClient() {
        SSLConnectionSocketFactory connectionSocketFactory = new SSLConnectionSocketFactory(SSLContexts.createDefault(), NoopHostnameVerifier.INSTANCE) {
            @Override
            protected void prepareSocket(SSLSocket socket) throws IOException {
                SSLParameters parameters = socket.getSSLParameters();
                parameters.setServerNames(List.of());
                socket.setSSLParameters(parameters);
                super.prepareSocket(socket);
            }
        };

        return HttpClients.custom()
                .setSSLSocketFactory(connectionSocketFactory)
                .build();
    }


}

它应该是有用的。在Apache HttpClient 4.4中重试SNI错误-我们提出的最简单的方法(参见HttpClient -1522):

public class SniHttpClientConnectionOperator extends DefaultHttpClientConnectionOperator {

    public SniHttpClientConnectionOperator(Lookup<ConnectionSocketFactory> socketFactoryRegistry) {
        super(socketFactoryRegistry, null, null);
    }

    @Override
    public void connect(
            final ManagedHttpClientConnection conn,
            final HttpHost host,
            final InetSocketAddress localAddress,
            final int connectTimeout,
            final SocketConfig socketConfig,
            final HttpContext context) throws IOException {
        try {
            super.connect(conn, host, localAddress, connectTimeout, socketConfig, context);
        } catch (SSLProtocolException e) {
            Boolean enableSniValue = (Boolean) context.getAttribute(SniSSLSocketFactory.ENABLE_SNI);
            boolean enableSni = enableSniValue == null || enableSniValue;
            if (enableSni && e.getMessage() != null && e.getMessage().equals("handshake alert:  unrecognized_name")) {
                TimesLoggers.httpworker.warn("Server received saw wrong SNI host, retrying without SNI");
                context.setAttribute(SniSSLSocketFactory.ENABLE_SNI, false);
                super.connect(conn, host, localAddress, connectTimeout, socketConfig, context);
            } else {
                throw e;
            }
        }
    }
}

and

public class SniSSLSocketFactory extends SSLConnectionSocketFactory {

    public static final String ENABLE_SNI = "__enable_sni__";

    /*
     * Implement any constructor you need for your particular application -
     * SSLConnectionSocketFactory has many variants
     */
    public SniSSLSocketFactory(final SSLContext sslContext, final HostnameVerifier verifier) {
        super(sslContext, verifier);
    }

    @Override
    public Socket createLayeredSocket(
            final Socket socket,
            final String target,
            final int port,
            final HttpContext context) throws IOException {
        Boolean enableSniValue = (Boolean) context.getAttribute(ENABLE_SNI);
        boolean enableSni = enableSniValue == null || enableSniValue;
        return super.createLayeredSocket(socket, enableSni ? target : "", port, context);
    }
}

and

cm = new PoolingHttpClientConnectionManager(new SniHttpClientConnectionOperator(socketFactoryRegistry), null, -1, TimeUnit.MILLISECONDS);

在这里加上一个解。这可能对LAMP用户有所帮助

Options +FollowSymLinks -SymLinksIfOwnerMatch

虚拟主机配置中的上述行是罪魁祸首。

虚拟主机配置错误时

<VirtualHost *:80>
    DocumentRoot /var/www/html/load/web
    ServerName dev.load.com
    <Directory "/var/www/html/load/web">
        Options +FollowSymLinks -SymLinksIfOwnerMatch
        AllowOverride All
        Require all granted
        Order Allow,Deny
        Allow from All
    </Directory>
     RewriteEngine on
     RewriteCond %{SERVER_PORT} !^443$
     RewriteRule ^/(.*) https://%{HTTP_HOST}/$1 [NC,R=301,L]
</VirtualHost>

配置工作

<VirtualHost *:80>
    DocumentRoot /var/www/html/load/web

   ServerName dev.load.com
   <Directory "/var/www/html/load/web">

        AllowOverride All

        Options All

        Order Allow,Deny

        Allow from All

    </Directory>

    # To allow authorization header
    RewriteEngine On
    RewriteCond %{HTTP:Authorization} ^(.*)
    RewriteRule .* - [e=HTTP_AUTHORIZATION:%1]

   # RewriteCond %{SERVER_PORT} !^443$
   # RewriteRule ^/(.*) https://%{HTTP_HOST}/$1 [NC,R=301,L]


</VirtualHost>

我觉得我也有同样的问题。 我发现我需要调整Apache配置，以包括主机的ServerName或ServerAlias。

这个代码失败了:

public class a {
   public static void main(String [] a) throws Exception {
      java.net.URLConnection c = new java.net.URL("https://mydomain.com/").openConnection();
      c.setDoOutput(true);
      c.getOutputStream();
   }
}

这段代码起作用了:

public class a {
   public static void main(String [] a) throws Exception {
      java.net.URLConnection c = new java.net.URL("https://google.com/").openConnection();
      c.setDoOutput(true);
      c.getOutputStream();
   }
}

Wireshark在发送TSL/SSL Hello时发现该警告 警报(级别:警告，描述:无法识别的名称)，服务器你好 正在从服务器发送到客户端。 这只是一个警告，然而，Java 7.1随后立即回复了一个“致命的，描述:意外消息”，我认为这意味着Java SSL库不喜欢看到无法识别的名称的警告。

来自关于传输层安全(TLS)的Wiki:

无法识别的名称警告仅TLS;client的Server Name Indicator指定了一个服务器不支持的主机名

这让我查看了Apache配置文件，我发现如果我为从客户端/java端发送的名称添加了ServerName或ServerAlias，它可以正常工作，没有任何错误。

<VirtualHost mydomain.com:443>
  ServerName mydomain.com
  ServerAlias www.mydomain.com

我在通过Eclipse访问Ubuntu Linux服务器时遇到了同样的问题。

它表明问题与Apache (re)启动时的警告有关:

[Mon Jun 30 22:27:10 2014] [warn] NameVirtualHost *:80 has no VirtualHosts

... waiting [Mon Jun 30 22:27:11 2014] [warn] NameVirtualHost *:80 has no VirtualHosts

这是由于ports.conf中的一个新条目，其中另一个NameVirtualHost指令与sites-enabled/000-default中的指令一起输入。

在移除ports.conf中的指令后，问题消失了(自然是在重新启动Apache之后)