笔记：
https，安全的超文本传输协议，使用普通的http请求将无法成功，此时就要用到证书，将证书放至assets(可以打包时放入，也可以通过请求获取下载地址下载，视情况而定)，再通过工厂set至HttpClient，以下为代码：
public class TrustAllSSLSocketFactory extends
SSLSocketFactory {
private static TrustAllSSLSocketFactory mInstance;
public TrustAllSSLSocketFactory(KeyStore truststore)
throws NoSuchAlgorithmException, KeyManagementException,
KeyStoreException, UnrecoverableKeyException {
super(truststore);
}
public static TrustAllSSLSocketFactory getDefault(Context
context) {
KeyStore keystore = null;
try {
CertificateFactory cf =
CertificateFactory.getInstance("X.509");
InputStream
in;
in =
context.getAssets().open("wassk.net.cer");
Certificate
ca = cf.generateCertificate(in);
keystore =
KeyStore.getInstance(KeyStore.getDefaultType());
keystore.load(null, null);
keystore.setCertificateEntry("ca", ca);
if (null ==
mInstance) {
mInstance = new
TrustAllSSLSocketFactory(keystore);
}
} catch (Exception e) {
}
return mInstance;
}
@Override
public Socket
createSocket() throws IOException {
return super.createSocket();
}
@Override
public Socket
createSocket(Socket socket, String host, int port, boolean
autoClose)
throws
IOException, UnknownHostException {
return super.createSocket(socket, host, port,
autoClose);
}
}
使用时：client.setSSLSocketFactory(TrustAllSSLSocketFactory.getDefault(ApplicationContext.mContext));//增加证书