Android Volley增加Https支持，允许SSL

Volley默认是不支持Https请求的。如果Https服务器是单向认证，则增加以下允许SSL就可以。

先增加SsX509TrustManager类，代码如下

package com.lakala.net.volley.toolbox;

import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;

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;

/**
 * Volley允许HTTPS
 *
 * Created by yuyh on 15/12/28.
 */
public class SsX509TrustManager implements X509TrustManager {
    private static TrustManager[] trustManagers;
    private static final X509Certificate[] _AcceptedIssuers = new
            X509Certificate[]{};

    @Override
    public void checkClientTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
        //To change body of implemented methods use File | Settings | File Templates.
    }

    @Override
    public void checkServerTrusted(java.security.cert.X509Certificate[] x509Certificates, String s) throws java.security.cert.CertificateException {
        //To change body of implemented methods use File | Settings | File Templates.
    }

    public boolean isClientTrusted(X509Certificate[] chain) {
        return true;
    }

    public boolean isServerTrusted(X509Certificate[] chain) {
        return true;
    }

    @Override
    public X509Certificate[] getAcceptedIssuers() {
        return _AcceptedIssuers;
    }

    /**
     * 允许所有的SSL请求，添加在new StringRequest()之前
     */
    public static void allowAllSSL() {
        HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {

            @Override
            public boolean verify(String arg0, SSLSession arg1) {
                // TODO Auto-generated method stub
                return true;
            }

        });

        SSLContext context = null;
        if (trustManagers == null) {
            trustManagers = new TrustManager[]{new SsX509TrustManager()};
        }

        try {
            context = SSLContext.getInstance("TLS");
            context.init(null, trustManagers, new SecureRandom());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (KeyManagementException e) {
            e.printStackTrace();
        }

        HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());
    }

}

然后再new StringRequest()之前加上下面这句代码就可以了~~

	// 允许SSL
        SsX509TrustManager.allowAllSSL();