出问题的log.   java.lang.NoSuchFieldError: No static field INSTANCE of type Lorg/apache/http/conn/ssl/AllowAllHostnameVerifier; in class Lorg/apache/http/conn/ssl/AllowAllHostnameVerifier; or its superclasses (declaration of 'org.apache.http.conn.ssl.AllowAllHostnameVerifier' appears in /system/framework/framework.jar!classes3.dex)         at org.apache.http.conn.ssl.SSLConnectionSocketFactory.<clinit>(SSLConnectionSocketFactory.java:151)         at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:977)         at com.wechat.pay.contrib.apache.httpclient.WechatPayHttpClientBuilder.build(WechatPayHttpClientBuilder.java:88)         at com.example.myapplication.MainActivity.sendHttpRequest2(MainActivity.java:250)         at com.example.myapplication.MainActivity.access$000(MainActivity.java:64)         at com.example.myapplication.MainActivity$2.run(MainActivity.java:186)         at java.lang.Thread.run(Thread.java:919) 使用wechatpay-apache-httpclient 0.4.8 SDK, 出错时的代码片段如下，创建WechatPayHttpClientBuilder的时候出现上述异常.         X509Certificate certificate = getCertificate(CERT_PATH + "wechatpay.pem");         List<X509Certificate> x509CertificateList = new ArrayList<>();         x509CertificateList.add(certificate);         PrivateKey privateKey = getPrivateKey(CERT_PATH + "apiclient_key.pem");         WechatPayHttpClientBuilder builder = WechatPayHttpClientBuilder.create()                 .withMerchant(mch_id, mchSerialNo, privateKey)                 .withWechatPay(x509CertificateList);         CloseableHttpClient httpClient = null;         try {             httpClient = builder.build();         } catch (IllegalArgumentException e) {             Log.e("ERROR", "IllegalArgumentException =" + e.getMessage());         }