【okclient httpclient FeignHttpsConfig @Configuration】

错误信息

The bean ‘client’, defined in class path resource [org/springframework/cloud/openfeign/clientconfig/OkHttpFeignConfiguration.class], could not be registered. A bean with that name has already been defined in class path resource [com/ctct/scan/wingshield/biz/dependence/config/WingShieldFeignHttpsConfig.class] and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

解释

上面这种情况出现，在项目中使用了okclient，但同时又引入的其他的配置并且添加了@Configuration那么就会在项目启动的时候扫描手写的配置跟okclient的冲突，所以解决办法就是去掉@Configuration，因为@FeignClient引入的配置类是可以不加@Configuration，只需要是一个正常的配置类即可

……还有httpclient是支持https的，一般添加的配置类是指跳过了https的证书认证。……我被同事写的注释误导了，以为httpsclient不支持https，下方代码是提供的支持https的配置

public class FeignHttpsConfig {

    public static SSLSocketFactory feignTrustingSSLSocketFactory = null;

    @Bean
    public Client client() {
        if (feignTrustingSSLSocketFactory == null) {
            try {
                feignTrustingSSLSocketFactory = getFeignTrustingSSLSocketFactory();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        Client client = new Client.Default(feignTrustingSSLSocketFactory, new NoopHostnameVerifier());
        return client;
    }

    public static SSLSocketFactory getFeignTrustingSSLSocketFactory() throws Exception {
        TrustManager[] trustAllCerts = new TrustManager[1];
        TrustManager tm = new miTM();
        trustAllCerts[0] = tm;
        SSLContext sc = SSLContext.getInstance("SSL");
        sc.init(null, trustAllCerts, null);
        return sc.getSocketFactory();
    }

    static class miTM implements TrustManager, X509TrustManager {
        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
            return null;
        }

        public boolean isServerTrusted(java.security.cert.X509Certificate[] certs) {
            return true;
        }

        public boolean isClientTrusted(java.security.cert.X509Certificate[] certs) {
            return true;
        }

        public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException {
            return;
        }

        public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
                throws java.security.cert.CertificateException {
            return;
        }
    }

}