SpringBoot：使用 SSL 的 FeignClient (p12)

Question

我正在尝试为一个使用 SSL 的外部 HTTP API 创建 FeignClient。 斗争是 - 如何用我的逻辑修改默认的 Spring FeignClient，在这种情况下是 SSL Connection Factory。所以基本上我想保留 Spring 自动为 FeignClients 做的所有好事，比如 Hystrix、Sleuth 跟踪等，并让它与我的 SSL 工厂一起工作。

将不胜感激任何建议。

---

这是我尝试做的：

我尝试在 ComponentScan 之外提供自定义 @Configuration：

@Configuration
public class CustomFeignConfiguration
{
    @Bean
    public Feign.Builder feignBuilder()
    {
        Client trustSSLSockets = new Client.Default(
                TrustingSSLSocketFactory.get("server1"),
                new NoopHostnameVerifier());

        log.info("feignBuilder called");
        return Feign.builder().client(trustSSLSockets);
    }
...
}

通过注解让FeignClient使用

    @FeignClient(name = "sslClient", configuration = CustomFeignConfiguration.class, url = "https://...")

“TrustingSSLSocketFactory”的实现类似于this。

现在，如果我在 Spring 应用程序中注入我的客户端，我可以看到“feignBuilder”被调用并且它成功加载了我的密钥。问题是创建的客户端实际上并未将指定的 SSLFactory 用于 createSocket 调用。所以我得到：

Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) ~[na:1.8.0_72]
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:154) ~[na:1.8.0_72]
    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2023) ~[na:1.8.0_72]
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125) ~[na:1.8.0_72]
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375) ~[na:1.8.0_72]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403) ~[na:1.8.0_72]
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387) ~[na:1.8.0_72]
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559) ~[na:1.8.0_72]
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) ~[na:1.8.0_72]
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1513) ~[na:1.8.0_72]
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441) ~[na:1.8.0_72]
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480) ~[na:1.8.0_72]
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338) ~[na:1.8.0_72]
    at feign.Client$Default.convertResponse(Client.java:152) ~[feign-core-9.3.1.jar:na]

Answer 1

创建Client，因为它是自己的@Bean，而不是构建器的一部分。 builder.client(client) 稍后被调用，覆盖您在创建构建器时设置的客户端。

所以

@Bean
public Client feignClient()
{
    Client trustSSLSockets = new Client.Default(
            TrustingSSLSocketFactory.get("server1"),
            new NoopHostnameVerifier());

    log.info("feignClient called");
    return trustSSLSockets;
}

Answer 2

我做了这样的事情来达到我的目的-

@Bean
public Client feignClient()
{
    Client trustSSLSockets = new Client.Default(getSSLSocketFactory(), new NoopHostnameVerifier());
    log.info("feignClient called"); 
    return trustSSLSockets;
}


private SSLSocketFactory getSSLSocketFactory() {
    try {
    TrustStrategy acceptingTrustStrategy = new TrustStrategy() {
        @Override
        public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
            //Do your validations
            return true;
        }
        };

        SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, acceptingTrustStrategy).build();
        return sslContext.getSocketFactory();
    } catch (Exception exception) {
        throw new RuntimeException(exception);
    }
}