如何使用输入流为Retrofit加载SSL证书

// 导入必要的类
import okhttp3.OkHttpClient;
import okhttp3.CertificatePinner;
import okhttp3.ConnectionSpec;
import okhttp3.TlsVersion;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.cert.CertificateFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManagerFactory;

// 加载SSL证书
try {
    // 加载证书文件
    InputStream inputStream = context.getResources().openRawResource(R.raw.certificate);
    CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
    X509Certificate certificate = (X509Certificate) certificateFactory.generateCertificate(inputStream);
    
    // 创建KeyStore并将证书导入
    KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
    keyStore.load(null, null);
    keyStore.setCertificateEntry("certificate", certificate);
    
    // 创建TrustManagerFactory并初始化
    TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
    trustManagerFactory.init(keyStore);
    
    // 创建SSLContext并配置TrustManager
    SSLContext sslContext = SSLContext.getInstance("TLS");
    sslContext.init(null, trustManagerFactory.getTrustManagers(), null);
    
    // 创建OkHttpClient实例
    OkHttpClient okHttpClient = new OkHttpClient.Builder()
        .sslSocketFactory(sslContext.getSocketFactory(), trustManagerFactory.getTrustManagers()[0])
        .build();
} catch (Exception e) {
    e.printStackTrace();
}

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl("https://api.example.com/")
    .client(okHttpClient) // 使用自定义的OkHttpClient实例
    .build();