Base64加密解密工具类

转自：https://blog.csdn.net/qq_35712358/article/details/70254684
 1 package platform.util;
 2 
 3 import java.io.UnsupportedEncodingException;  
 4 
 5 import sun.misc.*;  
 6   
 7 public class Base64 {  
 8     // 加密  
 9     public static String getBase64(String str) {  
10         byte[] b = null;  
11         String s = null;  
12         try {  
13             b = str.getBytes("utf-8");  
14         } catch (UnsupportedEncodingException e) {  
15             e.printStackTrace();  
16         }  
17         if (b != null) {  
18             s = new BASE64Encoder().encode(b);  
19         }  
20         return s;  
21     }  
22   
23     // 解密  
24     public static String getFromBase64(String s) {  
25         byte[] b = null;  
26         String result = null;  
27         if (s != null) {  
28             BASE64Decoder decoder = new BASE64Decoder();  
29             try {  
30                 b = decoder.decodeBuffer(s);  
31                 result = new String(b, "utf-8");  
32             } catch (Exception e) {  
33                 e.printStackTrace();  
34             }  
35         }  
36         return result;  
37     }  
38 }