SSLHandshakeException:找不到证书路径的信任锚.仅适用于Android API <19

Question

我遇到了与设备<api 19上带有自签名证书的服务器的https连接问题.我按照android发布的这个指南来信任自签名证书Android SSL,它似乎可以正常使用所有api> 19我测试的设备.我如何继续在19号前获得"未找到证书路径的信任锚"错误.

我使用keytool创建了密钥库,但似乎不是问题因为正在使用某些设备.

这是我的代码:

        URL url_uri = new URL(url);
        AssetManager am = context.getAssets();
        InputStream caInput = am.open("certs/myCert.bks");
        KeyStore keyStore;
        try {
            keyStore = KeyStore.getInstance("BKS");
            char[] pass = "MyPassword".toCharArray();
            keyStore.load(caInput, pass);
        } finally {
            caInput.close();
        }

        // Create a TrustManager that trusts the CAs in our KeyStore
        String tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(tmfAlgorithm);
        tmf.init(keyStore);

        // Create an SSLContext that uses our TrustManager
        SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, tmf.getTrustManagers(), null);

        HttpsURLConnection urlConnection =
                (HttpsURLConnection)url_uri.openConnection();
        urlConnection.setSSLSocketFactory(context.getSocketFactory());

        InputStream in = urlConnection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        StringBuffer sb = new StringBuffer("");
        String line = "";

        String NL = System.getProperty("line.separator");
        while ((line = reader.readLine()) != null){
            sb.append(line + NL);
        }
        in.close();
        JSON = sb.toString();

这是logcat错误:

W/System.err: javax.net.ssl.SSLHandshakeException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
W/System.err:     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:374)
W/System.err:     at libcore.net.http.HttpConnection.setupSecureSocket(HttpConnection.java:209)
W/System.err:     at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.makeSslConnection(HttpsURLConnectionImpl.java:478)
W/System.err:     at libcore.net.http.HttpsURLConnectionImpl$HttpsEngine.connect(HttpsURLConnectionImpl.java:433)
W/System.err:     at libcore.net.http.HttpEngine.sendSocketRequest(HttpEngine.java:289)
W/System.err:     at libcore.net.http.HttpEngine.sendRequest(HttpEngine.java:239)
W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:273)
W/System.err:     at libcore.net.http.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:168)
W/System.err:     at libcore.net.http.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:271)
W/System.err:     at com.splunk.mint.network.http.MonitorableHttpsURLConnection.getInputStream(MonitorableHttpsURLConnection.java:73)
W/System.err:     at com.w3is2.webservice.JsonConnect.connectSSL(JsonConnect.java:161)
W/System.err:     at com.w3is2.webservice.JsonConnect.getFamilias(JsonConnect.java:482)
W/System.err:     at com.w3is2.dat.biologia.ListaFamilias$DataLoader.doInBackground(ListaFamilias.java:137)
W/System.err:     at com.w3is2.dat.biologia.ListaFamilias$DataLoader.doInBackground(ListaFamilias.java:124)
W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
W/System.err:     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
W/System.err:     at java.lang.Thread.run(Thread.java:856)W/System.err: Caused by: java.security.cert.CertificateException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
W/System.err:     at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkTrusted(TrustManagerImpl.java:192)
W/System.err:     at org.apache.harmony.xnet.provider.jsse.TrustManagerImpl.checkServerTrusted(TrustManagerImpl.java:163)
W/System.err:     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.verifyCertificateChain(OpenSSLSocketImpl.java:573)
W/System.err:     at org.apache.harmony.xnet.provider.jsse.NativeCrypto.SSL_do_handshake(Native Method)
W/System.err:     at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:371)
W/System.err:   ... 20 more
W/System.err: Caused by: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found.
W/System.err:   ... 25 more
W/System.err: org.json.JSONException: End of input at character 0 of 
W/System.err:     at org.json.JSONTokener.syntaxError(JSONTokener.java:450)
W/System.err:     at org.json.JSONTokener.nextValue(JSONTokener.java:97)
W/System.err:     at org.json.JSONObject.<init>(JSONObject.java:154)
W/System.err:     at org.json.JSONObject.<init>(JSONObject.java:171)
W/System.err:     at com.w3is2.webservice.JsonConnect.getFamilias(JsonConnect.java:488)
W/System.err:     at com.w3is2.dat.biologia.ListaFamilias$DataLoader.doInBackground(ListaFamilias.java:137)
W/System.err:     at com.w3is2.dat.biologia.ListaFamilias$DataLoader.doInBackground(ListaFamilias.java:124)
W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
W/System.err:     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
W/System.err:     at java.lang.Thread.run(Thread.java:856)