javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

 1     /** 2      * 拼接请求参数，发起请求 3      * @param request 4      * @param sParaTemp 5      * @param strMethod 6      * @param strButtonName 7      * @return 8      */ 9     public static String sendRequest(String mch_id,HttpServletRequest request, Map<String, String> paraTemp) {10         String result = null;// 返回的结果11         CloseableHttpResponse response = null;12         CloseableHttpClient client = null;13         14         HttpPost httpPost = new HttpPost(SwiftpassConfig.yinsheng_YSEPAY_GATEWAY_URL); //创建HttpPost对象  15         // 存参列表16         List <NameValuePair> params = new ArrayList<NameValuePair>();  17         // 参数不为空18         if(!paraTemp.isEmpty()) {19             // 遍历map，保存到List中20             for (Map.Entry<String, String> entry : paraTemp.entrySet()) {  21                 params.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));  22             }23             try {  24                 httpPost.setEntity(new UrlEncodedFormEntity(params ,HTTP.UTF_8));25                 // 创建 CloseableHttpClient 对象26                 client = HttpClients.createDefault();27                 response = client.execute(httpPost);28                 if(response.getStatusLine().getStatusCode() == 200) {  29                     HttpEntity httpEntity = response.getEntity();  30                     //取出应答字符串 31                     result = EntityUtils.toString(httpEntity); 32                 }  33             } catch (Exception e) {  34                 e.printStackTrace();  35                 result = e.getMessage().toString();  36             }  37         }38         return result;39     }    

    /**     * buildSSLCloseableHttpClient:(设置允许所有主机名称都可以，忽略主机名称验证)     * @author xbq     * @return     * @throws Exception     */    private static CloseableHttpClient buildSSLCloseableHttpClient() throws Exception {        SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {            // 信任所有            public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {                return true;            }        }).build();        // ALLOW_ALL_HOSTNAME_VERIFIER:这个主机名验证器基本上是关闭主机名验证的,实现的是一个空操作，并且不会抛出javax.net.ssl.SSLException异常。        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new String[] { "TLSv1" }, null,                SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);        return HttpClients.custom().setSSLSocketFactory(sslsf).build();    }            /**     * 拼接请求参数，发起请求     * @param request     * @param sParaTemp     * @param strMethod     * @param strButtonName     * @return     */    public static String sendRequest(String mch_id,HttpServletRequest request, Map<String, String> paraTemp) {        String result = null;// 返回的结果        CloseableHttpResponse response = null;        CloseableHttpClient client = null;                HttpPost httpPost = new HttpPost(SwiftpassConfig.yinsheng_YSEPAY_GATEWAY_URL); //创建HttpPost对象          // 存参列表        List <NameValuePair> params = new ArrayList<NameValuePair>();          // 参数不为空        if(!paraTemp.isEmpty()) {            // 遍历map，保存到List中            for (Map.Entry<String, String> entry : paraTemp.entrySet()) {                  params.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));              }            try {                  httpPost.setEntity(new UrlEncodedFormEntity(params ,HTTP.UTF_8));                // 调用方法，创建 CloseableHttpClient 对象                client = buildSSLCloseableHttpClient();                response = client.execute(httpPost);                if(response.getStatusLine().getStatusCode() == 200) {                      HttpEntity httpEntity = response.getEntity();                      //取出应答字符串                     result = EntityUtils.toString(httpEntity);                 }              } catch (Exception e) {                  e.printStackTrace();                  result = e.getMessage().toString();              }          }        return result;    }