邮件开发——base64账号密码转换

 1 package com.hq.base64;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.FileInputStream;
 5 import java.io.FileNotFoundException;
 6 import java.io.FileOutputStream;
 7 import java.io.IOException;
 8 import java.io.InputStreamReader;
 9 import java.io.UnsupportedEncodingException;
10 import java.util.Properties;
11 
12 import javax.activation.DataHandler;
13 import javax.activation.DataSource;
14 import javax.activation.FileDataSource;
15 import javax.mail.Address;
16 import javax.mail.Authenticator;
17 import javax.mail.Message;
18 import javax.mail.MessagingException;
19 import javax.mail.PasswordAuthentication;
20 import javax.mail.Session;
21 import javax.mail.Transport;
22 import javax.mail.Message.RecipientType;
23 import javax.mail.internet.AddressException;
24 import javax.mail.internet.InternetAddress;
25 import javax.mail.internet.MimeBodyPart;
26 import javax.mail.internet.MimeMessage;
27 import javax.mail.internet.MimeMultipart;
28 import javax.mail.internet.MimeUtility;
29 
30 
31 
32 
33 import sun.misc.BASE64Encoder;
34 
35 public class Base64Util {
36 
37     /**
38      * @param args add by zxx ,Dec 30, 2008
39      * @throws IOException 
40      */
41     public static void main(String[] args) throws IOException {
42         BASE64Encoder encoder = new BASE64Encoder();
43         System.out.println("please input user name:");
44         String username = new BufferedReader(
45                     new InputStreamReader(System.in))
46                     .readLine();
47         System.out.println(encoder.encode(username.getBytes()));
48         System.out.println("please input password:");
49         String password = new BufferedReader(
50                 new InputStreamReader(System.in))
51                 .readLine();        
52         System.out.println(encoder.encode(password.getBytes()));
53     }
54 }

Base64是网络上最常见的用于传输8Bit字节代码的编码方式之一,大家可以查看RFC2045~RFC2049,上面有MIME的详细规范。Base64编码可用于在HTTP环境下传递较长的标识信息。例如,在Java Persistence系统Hibernate中,就采用了Base64来将一个较长的唯一标识符(一般为128-bit的UUID)编码为一个字符串,用作HTTP表单和HTTP GET URL中的参数。在其他应用程序中,也常常需要把二进制数据编码为适合放在URL(包括隐藏表单域)中的形式。此时,采用Base64编码具有不可读性,即所编码的数据不会被人用肉眼所直接看到。

posted @ 2016-11-12 08:53  荆小八  阅读(1061)  评论(0编辑  收藏  举报