Java okHttp 忽略Https证书验证

问题

我们在和第三方系统交互时，Https url会出现找不到证书的问题。unable to find valid certification path to requested target. 我尝试过很多方法比如添加证书等，但是最后都以失败告终。只能退而求其次忽略指定url的证书验证，亲测好用！

解决方案

创建OkHttpUtil类，代码如下：

import lombok.var;

import javax.net.ssl.*;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.cert.X509Certificate;

/**
 *
 * @author Jeter
 *
 */
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;
            }
        };
    }
}

然后我们之前有提到，只忽略目标Url。所以我们在创建 OkHttp Clent的地方引用工具类即可

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

总结

最后测试通过不在遇到SSL证书验证问题。忽略证书验证可以作为兜底方案，有感兴趣的大佬可以研究添加证书，无疑才是最正规的解决方案。