HTTP GET上的SSL错误

Question

我正在

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

我尝试过的事情：   1.将证书添加到我的密钥库   2.使用自定义TrustModifier进行验证。这会导致SSL错误更改为http 401错误

这是我的代码

URL website = new URL(urlpath);
        HttpURLConnection conn = (HttpURLConnection) website.openConnection();
        conn.setRequestMethod("GET");

        //TrustModifier.relaxHostChecking(conn);
        InputStream is = conn.getInputStream();
        FileOutputStream out = new FileOutputStream(path);
        copyStream (is, out);
        out.close();