CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
        FileInputStream caInputStream = new FileInputStream(caPath);
        List<X509Certificate> caList =  certificateFactory.generateCertificates(caInputStream).stream().map(v->
                (X509Certificate)v).collect(Collectors.toList());
        KeyStore keystore = KeyStore.getInstance("JKS");
        keystore.load(null, null);
        for(X509Certificate ca: caList)
           keystore.setCertificateEntry(ca.getSubjectDN().getName(), ca);
        TrustManagerFactory tmf = TrustManagerFactory.getInstance("PKIX");
        tmf.init(keystore);
 
        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, tmf.getTrustManagers(), new SecureRandom());

   private void sslContext() {
       // 初始化密鑰庫
        KeyManagerFactory keyManagerFactory = KeyManagerFactory
                .getInstance("SunX509");
        KeyStore keyStore = getKeyStore("client.jks", "123456", "PKCS12");
        keyManagerFactory.init(keyStore, "123456".toCharArray());
        // 初始化信任庫
        TrustManagerFactory trustManagerFactory = TrustManagerFactory
                .getInstance("SunX509");
        KeyStore trustkeyStore = getKeyStore("server.jks", "123456", "JKS");
        trustManagerFactory.init(trustkeyStore);
        // 初始化SSL上下文
        SSLContext ctx = SSLContext.getInstance("SSL");
        ctx.init(keyManagerFactory.getKeyManagers(), trustManagerFactory
                .getTrustManagers(), null);
 
    }
 
    private  KeyStore getKeyStore(String keyStorePath, String password, String type)
            throws Exception {
 
        FileInputStream is = new FileInputStream(keyStorePath);
        KeyStore ks = KeyStore.getInstance(type);
        ks.load(is, password.toCharArray());
        is.close();
        return ks;
    }