androd中使用 https ssl

android平台上支持的keystore type好像只有PKCS12，不支持JKS。

使用https的前提是，服务器必须首先配置好ssl，配置安全连接各种服务器都有说明文档，在此不多说了、

还必须把服务器证书导出来，通过浏览器就可以导出来，此处导出的证书文件为： my.cer

可以把证书放在asset文件夹下，或者放到raw文件加下，以流的形式读出来。

下面是在android上的代码，经过测试，没有任何问题

public class HttpsActivity extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        try {        https();} catch (KeyManagementException e) {Log.e("https", e.getMessage());} catch (ClientProtocolException e) {Log.e("https", e.getMessage());} catch (KeyStoreException e) {Log.e("https", e.getMessage());} catch (NoSuchAlgorithmException e) {Log.e("https", e.getMessage());} catch (CertificateException e) {Log.e("https", e.getMessage());} catch (UnrecoverableKeyException e) {Log.e("https", e.getMessage());} catch (IOException e) {Log.e("https", e.getMessage());}    }    public void https() throws ClientProtocolException, IOException, KeyStoreException, NoSuchAlgorithmException, CertificateException, KeyManagementException, UnrecoverableKeyException{    DefaultHttpClient httpclient = new DefaultHttpClient();        try {            KeyStore trustStore  = KeyStore.getInstance("PKCS12");            InputStream instream = getResources().openRawResource(R.raw.my);             CertificateFactory cerFactory = CertificateFactory.getInstance("X.509");              java.security.cert.Certificate cer = cerFactory.generateCertificate(instream);            try {            trustStore.load(null, null);            trustStore.setCertificateEntry("trust", cer);            } finally {                try { instream.close(); } catch (Exception ignore) {}            }                        SSLSocketFactory socketFactory = new SSLSocketFactory(trustStore);            Scheme https = new Scheme("https", socketFactory, 8443);            httpclient.getConnectionManager().getSchemeRegistry().register(https);            HttpGet httpget = new HttpGet("https://服务器IP:8443/httpsServer/httpstest?username=mmmm&password=pppp");            System.out.println("executing request" + httpget.getRequestLine());            Log.i("https", "executing request" + httpget.getRequestLine());            HttpResponse response = httpclient.execute(httpget);            HttpEntity entity = response.getEntity();            Log.i("https", "----------------------------------------");            System.out.println(response.getStatusLine());            if (entity != null) {                Log.i("https", "Response content length: " + entity.getContentLength());            }        } finally {            // When HttpClient instance is no longer needed,            // shut down the connection manager to ensure            // immediate deallocation of all system resources            httpclient.getConnectionManager().shutdown();        }    }                }

如果有什么地方不妥的地方，请指正，不胜感激。