@@ -35,6 +35,12 @@ public class AesUtil {
      */
     public static String key;
 
+    /**
+     * 不能在代码中创建
+     * JceSecurity.getVerificationResult 会将其put进private static final lap<Provider,0bject>中，导致内存缓便被耗尽
+     */
+    private static final BouncyCastleProvider PROVIDER = new BouncyCastleProvider();
+
     static {
         key = getKey();
     }
@@ -77,14 +83,12 @@ public static String getKey() {
      */
     public static String encrypt(String content, String encryptKey) throws Exception {
         //设置Cipher对象
-        Cipher cipher = Cipher.getInstance(ALGORITHMS,new BouncyCastleProvider());
+        Cipher cipher = Cipher.getInstance(ALGORITHMS, PROVIDER);
         cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), KEY_ALGORITHM));
 
         //调用doFinal
-        byte[] b = cipher.doFinal(content.getBytes(StandardCharsets.UTF_8));
-
         // 转base64
-        return Base64.encodeBase64String(b);
+        return Base64.encodeBase64String(cipher.doFinal(content.getBytes(StandardCharsets.UTF_8)));
 
     }
 
@@ -99,12 +103,11 @@ public static String decrypt(String encryptStr, String decryptKey) throws Except
         byte[] decodeBase64 = Base64.decodeBase64(encryptStr);
 
         //设置Cipher对象
-        Cipher cipher = Cipher.getInstance(ALGORITHMS,new BouncyCastleProvider());
+        Cipher cipher = Cipher.getInstance(ALGORITHMS,PROVIDER);
         cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), KEY_ALGORITHM));
 
         //调用doFinal解密
-        byte[] decryptBytes = cipher.doFinal(decodeBase64);
-        return new String(decryptBytes);
+        return new String(cipher.doFinal(decodeBase64));
     }
 
 }
@@ -95,10 +95,7 @@ private static Map<String, Object> genKeyPair() throws Exception {
      */
     public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey) throws Exception {
         //base64格式的key字符串转Key对象
-        byte[] keyBytes = Base64.decodeBase64(privateKey);
-        PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(keyBytes);
-        KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
-        Key privateK = keyFactory.generatePrivate(pkcs8KeySpec);
+        Key privateK = KeyFactory.getInstance(KEY_ALGORITHM).generatePrivate(new PKCS8EncodedKeySpec(Base64.decodeBase64(privateKey)));
 
         //设置加密、填充方式
         /*
@@ -126,10 +123,7 @@ public static byte[] decryptByPrivateKey(byte[] encryptedData, String privateKey
      */
     public static byte[] encryptByPublicKey(byte[] data, String publicKey) throws Exception {
         //base64格式的key字符串转Key对象
-        byte[] keyBytes = Base64.decodeBase64(publicKey);
-        X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(keyBytes);
-        KeyFactory keyFactory = KeyFactory.getInstance(KEY_ALGORITHM);
-        Key publicK = keyFactory.generatePublic(x509KeySpec);
+        Key publicK = KeyFactory.getInstance(KEY_ALGORITHM).generatePublic(new X509EncodedKeySpec(Base64.decodeBase64(publicKey)));
 
         //设置加密、填充方式
         /*
@@ -185,8 +179,7 @@ private static byte[] encryptAndDecryptOfSubsection(byte[] data, Cipher cipher,
             i++;
             offSet = i * encryptBlock;
         }
-        byte[] toByteArray = out.toByteArray();
         out.close();
-        return toByteArray;
+        return out.toByteArray();
     }
 }