本文主要向大家介绍了JAVA语言之ValidatorException-异常处理，通过具体的内容向大家展示，希望对大家学习JAVA语言有所帮助。

Java在发送Https请求的时候，不可避免的会发生SSL证书认证失败

错误信息：sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

错误原因是因为发送Https请求的时候 SSL证书认证失败

事发现场：在使用HttpClient调用支付宝的Https接口时发生的错误

解决方法：创建一个HttpSSL类，代码如下

import javax.net.ssl.HostnameVerifier;

import javax.net.ssl.HttpsURLConnection;

import javax.net.ssl.SSLSession;

import javax.net.ssl.TrustManager;

public class HttpSSL {

    private static void trustAllHttpsCertificates() throws Exception {

        javax.net.ssl.TrustManager[] trustAllCerts = new TrustManager[1];

        javax.net.ssl.TrustManager tm = new miTM();

        trustAllCerts[0] = tm;

        javax.net.ssl.SSLContext sc = javax.net.ssl.SSLContext.getInstance("SSL");

        sc.init(null, trustAllCerts, null);

        javax.net.ssl.HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());

    }      

    public static void solveSSL() throws Exception{

          trustAllHttpsCertificates();

          HostnameVerifier hv = new HostnameVerifier() {

              public boolean verify(String urlHostName, SSLSession session) {                  

                  return true;

              }

          };

          HttpsURLConnection.setDefaultHostnameVerifier(hv);

    }

    static class miTM implements javax.net.ssl.TrustManager, javax.net.ssl.X509TrustManager {

        public java.security.cert.X509Certificate[] getAcceptedIssuers() {

            return null;

        }

        public boolean isServerTrusted(java.security.cert.X509Certificate[] certs) {

            return true;

        }

        public boolean isClientTrusted(java.security.cert.X509Certificate[] certs) {

            return true;

        }

        public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)

                throws java.security.cert.CertificateException {

            return;

        }

        public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)

                throws java.security.cert.CertificateException {

            return;

        }

    }

}

使用方式，在发送Https请求之前，调用该类的 solveSSL()方法忽略证书认证问题

OK，基本能解决SSL认证失败的问题了!

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