fix static method

src/main/java/com/imyeyu/utils/Decryptor.java

@@ -22,7 +22,7 @@ public class Decryptor {
 	 * @param key  密钥
 	 * @return 解密结果
 	 */
-	public byte[] aes(String data, byte[] key) {
+	public static byte[] aes(String data, byte[] key) {
 		return aes(data.getBytes(), key);
 	}
 
@@ -33,7 +33,7 @@ public class Decryptor {
 	 * @param key  密钥
 	 * @return 解密结果
 	 */
-	public byte[] aes(byte[] data, byte[] key) {
+	public static byte[] aes(byte[] data, byte[] key) {
 		try {
 			SecretKey secretKey = new SecretKeySpec(key, "AES");
 			Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");