关于工作中遇到的HTTPS 和 SSL

上个星期，遇到了加密视频不能播放的问题，检查了日志发现如下报错：

Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Caused by: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.

最终敲定原因，应该是HTTPS站点的SSL数字证书出错，导致无法建立网络连接，无法下载解密文件，也就无法播放加密视频了。

解决方法无非两个：

1、保持原有设计，那就是更新证书。

2、证书不能动的 情况下，那就只能通过代码来忽略掉证书，直接建立连接了。

关键代码如下：

public static void trustAllHosts() {
        // Create a trust manager that does not validate certificate chains
        // Android use X509 cert
        TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return new java.security.cert.X509Certificate[] {};
            }

            public void checkClientTrusted(X509Certificate[] chain,
                    String authType) throws CertificateException {
            }

            public void checkServerTrusted(X509Certificate[] chain,
                    String authType) throws CertificateException {
            }
        } };

        // Install the all-trusting trust manager
        try {
            SSLContext sc = SSLContext.getInstance("TLS");
            sc.init(null, trustAllCerts, new java.security.SecureRandom());
            HttpsURLConnection
                    .setDefaultSSLSocketFactory(sc.getSocketFactory());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }