请求https 的学习例子之一（ httpUrlconn）

配置证书相关信息

.package com.example.qundui.learndemo.netutils;

/**
* Created by qundui on 2017/4/24.
*/

import android.annotation.SuppressLint;

import com.example.qundui.learndemo.Myapp;

import java.io.InputStream;
import java.security.KeyStore;
import java.security.SecureRandom;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;

public class SSLContextUtil {

/** * 拿到https证书, SSLContext 。 */@SuppressLint("TrulyRandom")public static SSLContext getSSLContext() {    SSLContext sslContext = null;    try {        sslContext = SSLContext.getInstance("TLS");        InputStream inputStream = Myapp.getInstance().getAssets().open( "srca.cer");        CertificateFactory cerFactory = CertificateFactory.getInstance("X.509");        Certificate cer = cerFactory.generateCertificate(inputStream);        KeyStore keyStore = KeyStore.getInstance("PKCS12");        keyStore.load(null, null);        keyStore.setCertificateEntry("trust", cer);        KeyManagerFactory keyManagerFactory = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());        keyManagerFactory.init(keyStore, null);        TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());        trustManagerFactory.init(keyStore);        sslContext.init(keyManagerFactory.getKeyManagers(), trustManagerFactory.getTrustManagers(), new SecureRandom());    } catch (Exception e) {        e.printStackTrace();    }    return sslContext;}/** * 如果不需要https证书 */public static SSLContext getDefaultSLLContext() {    SSLContext sslContext = null;    try {        sslContext = SSLContext.getInstance("TLS");        sslContext.init(null, new TrustManager[]{trustManagers}, new SecureRandom());    } catch (Exception e) {        e.printStackTrace();    }    return sslContext;}private static TrustManager trustManagers = new X509TrustManager() {    @Override    public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {    }    @Override    public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {    }    @Override    public X509Certificate[] getAcceptedIssuers() {        return new X509Certificate[0];    }};public static final HostnameVerifier HOSTNAME_VERIFIER = new HostnameVerifier() {    public boolean verify(String hostname, SSLSession session) {        return true;    }};

}

请求操作

private void getData(String url1) {

    try {        URL url = new URL(url1);        HttpURLConnection  urlConnection = (HttpURLConnection) url.openConnection();        urlConnection.setRequestMethod("GET");

// 设置SSLSocketFoactory，这里有两种：1.需要安全证书 2.不需要安全证书(绕过证书)
if (urlConnection instanceof HttpsURLConnection) { // 是Https请求
SSLContext sslContext = SSLContextUtil.getSSLContext();
if (sslContext != null) {
SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
((HttpsURLConnection) urlConnection).setSSLSocketFactory(sslSocketFactory);
}
}
urlConnection.setConnectTimeout(8 * 1000);
urlConnection.setReadTimeout(8 * 1000);
int responseCode = urlConnection.getResponseCode();
if (responseCode == 200) { // 请求成功
InputStream inputStream = urlConnection.getInputStream();
Log.i(“gsc”,”—-“+StringTools.StringtoInpustream(inputStream));
inputStream.close();
}
urlConnection.disconnect();

    }catch (Exception e){    }}