🐛 修复x509代码

Author: sanjun1995

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/util/PemUtils.java

@@ -47,7 +47,7 @@ public static PrivateKey loadPrivateKey(InputStream inputStream) {
 
   public static X509Certificate loadCertificate(InputStream inputStream) {
     try {
-      CertificateFactory cf = CertificateFactory.getInstance("X509");
+      CertificateFactory cf = CertificateFactory.getInstance("X.509");
       X509Certificate cert = (X509Certificate) cf.generateCertificate(inputStream);
       cert.checkValidity();
       return cert;

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/util/RsaCryptoUtil.java

@@ -47,7 +47,7 @@ private static void encryptField(Object encryptObject, X509Certificate certifica
           Object oldValue = field.get(encryptObject);
           if (oldValue != null) {
             String oldStr = (String) oldValue;
-            if (!oldStr.trim().equals("'")) {
+            if (!"".equals(oldStr.trim())) {
               field.set(encryptObject, encryptOAEP(oldStr, certificate));
             }
           }