如何用JAVA实现HTTPS客户端

如何不依赖第三方库，用JAVA实现一个HTTPS客户端，给出URL和端口号，便可发送HTTPS请求，得到响应内容？

import java.io.*;
import java.net.*;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.*;
public class TrustSSL {
private static class TrustAnyTrustManager implements X509TrustManager {
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[] {};
}
}
private static class TrustAnyHostnameVerifier implements HostnameVerifier {
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
public static void main(String[] args) throws Exception {
InputStream in = null;
OutputStream out = null;
byte[] buffer = new byte[4096];
String str_return = "";
try {
SSLContext sc = SSLContext.getInstance("SSL");
sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },
new java.security.SecureRandom());
URL console = new URL(
"https://192.168.1.188/test.php?username=测试");
HttpsURLConnection conn = (HttpsURLConnection) console
.openConnection();
conn.setSSLSocketFactory(sc.getSocketFactory());
conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
conn.connect();
InputStream is = conn.getInputStream();
DataInputStream indata = new DataInputStream(is);
String ret = "";
while (ret != null) {
ret = indata.readLine();
if (ret != null && !ret.trim().equals("")) {
str_return = str_return
+ new String(ret.getBytes("ISO-8859-1"), "GBK");
}
}
conn.disconnect();
} catch (ConnectException e) {
System.out.println("ConnectException");
System.out.println(e);
throw e;
} catch (IOException e) {
System.out.println("IOException");
System.out.println(e);
throw e;
} finally {
try {
in.close();
} catch (Exception e) {
}
try {
out.close();
} catch (Exception e) {
}
}
System.out.println(str_return);
}
}

对于不是优盘的ukey，一般都有驱动程序的。用正确的api就可以不导入直接使用。