使用Spring RestTemplate验证HTTPS调用的证书和主机名

import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;
import java.io.FileInputStream;
import java.security.KeyStore;

public class HttpsClientExample {
    public static void main(String[] args) throws Exception {
        // 加载证书
        KeyStore keyStore = KeyStore.getInstance("JKS");
        FileInputStream fileInputStream = new FileInputStream("path/to/keystore.jks");
        keyStore.load(fileInputStream, "password".toCharArray());

        // 初始化SSLContext
        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        trustManagerFactory.init(keyStore);
        SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(null, trustManagerFactory.getTrustManagers(), null);

        // 创建HttpClient
        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        requestFactory.setHttpClient(HttpClients.custom().setSSLContext(sslContext).build());

        // 创建RestTemplate
        RestTemplate restTemplate = new RestTemplateBuilder().requestFactory(() -> requestFactory).build();

        // 发送HTTPS请求
        String response = restTemplate.getForObject("https://example.com/api", String.class);
        System.out.println(response);
    }
}