Java okHttp 3 忽略Https的SSL最佳方案

okHttp是Java平台下方便的HTTP客户端工具，最近笔者在实际项目中使用时，发现于客户第三方应用集成时，对方提供的API采用自签名的HTTPS，直接导致项目运行报错，并且客户方面因为经常变更证书，要求忽略证书，为解决该问题，笔者在网络上搜索现成的方案，并不能完全满足自己的业务需求或对代码的轻度洁癖。

参考部分网络上浏览量较高的方案，笔者在其思路引领下进行修改。废话不多说，直接贴代码。

代码 1. 工具类 OkHttpUtil.java

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.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

/**
 * 
 * @author Vania
 *
 */
public class OkHttpUtil {
    /**
     * X509TrustManager instance which ignored SSL certification
     */
    public static final X509TrustManager IGNORE_SSL_TRUST_MANAGER_X509 = new X509TrustManager() {
        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType) {
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType) {
        }

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

    /**
     * Get initialized SSLContext instance which ignored SSL certification
     * 
     * @return
     * @throws NoSuchAlgorithmException
     * @throws KeyManagementException
     */
    public static SSLContext getIgnoreInitedSslContext() throws NoSuchAlgorithmException, KeyManagementException {
        var sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, new TrustManager[] { IGNORE_SSL_TRUST_MANAGER_X509 }, new SecureRandom());
        return sslContext;
    }

    /**
     * Get HostnameVerifier which ignored SSL certification
     * 
     * @return
     */
    public static HostnameVerifier getIgnoreSslHostnameVerifier() {
        return new HostnameVerifier() {
            @Override
            public boolean verify(String arg0, SSLSession arg1) {
                return true;
            }
        };
    }
}

代码 2 业务代码片段

client = new OkHttpClient()
     .newBuilder()
     .sslSocketFactory(OkHttpUtil.getIgnoreInitedSslContext().getSocketFactory(), OkHttpUtil.IGNORE_SSL_TRUST_MANAGER_X509)
     .hostnameVerifier(OkHttpUtil.getIgnoreSslHostnameVerifier())
     .build();