以编程方式将.cer证书导入密钥库

Question

如何将类路径中的.p12证书导入到Java密钥库中？首先,我使用了InstallCert https://code.google.com/p/java-use-examples/source/browse/trunk/src/com/aw/ad/util/InstallCert.java并进行了一些更改,因此服务器证书将被导入到java安装目录中的密钥库中.这工作正常,但现在我想从我的类路径加载证书.

编辑:我只是使用.cer证书,请参阅下一个答案

Answer 1

答案:

    InputStream certIn = ClassLoader.class.getResourceAsStream("/package/myCert.cer");

    final char sep = File.separatorChar;
    File dir = new File(System.getProperty("java.home") + sep + "lib" + sep + "security");
    File file = new File(dir, "cacerts");
    InputStream localCertIn = new FileInputStream(file);

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(localCertIn, passphrase);
    if (keystore.containsAlias("myAlias")) {
        certIn.close();
        localCertIn.close();
        return;
    }
    localCertIn.close();

    BufferedInputStream bis = new BufferedInputStream(certIn);
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    while (bis.available() > 0) {
        Certificate cert = cf.generateCertificate(bis);
        keystore.setCertificateEntry("myAlias", cert);
    }

    certIn.close();

    OutputStream out = new FileOutputStream(file);
    keystore.store(out, passphrase);
    out.close();

对于Java Web Start,请不要使用ClassLoader,请使用Class itselfe:

InputStream certIn = Certificates.class.getResourceAsStream("/package/myCert.cer");