如何使用带证书身份验证的RestTemplate？

openssl pkcs12 -export -in client-cert.pem -inkey client-key.pem -out client-cert.p12 -name "client-cert"

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.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import javax.net.ssl.SSLContext;
import java.io.File;
import java.security.KeyStore;

@Configuration
public class RestTemplateConfig {

    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder builder) throws Exception {
        // Load the client certificate
        KeyStore keyStore = KeyStore.getInstance("PKCS12");
        File keyFile = new File("path/to/client-cert.p12");
        char[] keyPassword = "your-password".toCharArray();
        keyStore.load(new FileInputStream(keyFile), keyPassword);

        // Create SSL context with the client certificate
        SSLContext sslContext = SSLContextBuilder.create()
                .loadKeyMaterial(keyStore, keyPassword)
                .build();

        // Create SSL connection socket factory
        SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(
                sslContext,
                NoopHostnameVerifier.INSTANCE
        );

        // Create HttpClient with the SSL connection socket factory
        CloseableHttpClient httpClient = HttpClients.custom()
                .setSSLSocketFactory(socketFactory)
                .build();

        // Create HttpComponentsClientHttpRequestFactory with the HttpClient
        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);

        // Create and return RestTemplate
        return builder
                .requestFactory(() -> factory)
                .build();
    }
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

@Service
public class MyService {

    @Autowired
    private RestTemplate restTemplate;

    public String makeSecureRequest() {
        String url = "https://secure-api.example.com/resource";
        return restTemplate.getForObject(url, String.class);
    }
}