SpringBoot：带 SSL 的 FeignClient (p12)

Question

我正在尝试为一个使用 SSL 的外部 HTTP API 创建一个 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 连接工厂。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://...")

其中“TrustingSSLSocketFactory”的实现与此类似。

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它自己的@Bean而不是构建器的一部分。builder.client(client)稍后调用，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;
}