javax.net.ssl.HttpsURLConnection

HttpsURLConnectionを証明書を無視?してレスポンスを取ってみる

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;

public class Sample {
    public static void main(String[] args) throws Exception {
        URL url = new URL("https://www.verisign.com");
        TrustManager[] tm = {new X509TrustManager() {
            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
            public void checkClientTrusted(X509Certificate[] xc, String type) {
                return;
            }
            public void checkServerTrusted(X509Certificate[] xc, String type) {
                return;
            }
        }};
        SSLContext ctx = SSLContext.getInstance("SSL");
        ctx.init(null, tm, new SecureRandom());

        HttpsURLConnection conn = (HttpsURLConnection)url.openConnection();
        conn.setDoOutput(true);
        conn.setSSLSocketFactory(ctx.getSocketFactory());
        conn.setDefaultHostnameVerifier(new HostnameVerifier() {
            public boolean verify(String host, SSLSession s) {
                return true;
            }
        });
        BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        String str = null;

        while((str = br.readLine()) != null) {
            System.out.println(str);
        }
        br.close();
    }
}