你的位置:首页 > Java教程

[Java教程]java编写Base64密码器


Base64加密算法,应用广泛,尤其是在电子邮件传输上,有很大的用途

用JAVA编写的程序代码如下

import java.awt.BorderLayout;import java.awt.EventQueue;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.IOException;import javax.swing.JFrame;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JTextArea;import javax.swing.JButton;public class Base64Frame extends JFrame {  private JPanel contentPane;  private JButton btnNewButton;  private JTextArea textArea;  private JButton btnNewButton_1;  private JTextArea textArea_1;  /**   * Launch the application.   */  public static void main(String[] args) {    EventQueue.invokeLater(new Runnable() {      public void run() {        try {          Base64Frame frame = new Base64Frame();          frame.setVisible(true);        } catch (Exception e) {          e.printStackTrace();        }      }    });  }  /**   * Create the frame.   */  public Base64Frame() {    setTitle("Base64密码器");    setResizable(false);    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    setBounds(100, 100, 505, 405);    contentPane = new JPanel();    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));    setContentPane(contentPane);    contentPane.setLayout(null);        textArea = new JTextArea();    textArea.setBounds(14, 13, 471, 136);    contentPane.add(textArea);        textArea_1 = new JTextArea();    textArea_1.setBounds(14, 206, 471, 151);    contentPane.add(textArea_1);        btnNewButton = new JButton("编码");    btnNewButton.setBounds(14, 166, 113, 27);    contentPane.add(btnNewButton);        btnNewButton_1 = new JButton("解码");    btnNewButton_1.setBounds(372, 162, 113, 27);    contentPane.add(btnNewButton_1);    btnNewButton.addActionListener(new ActionListener() {            @Override      public void actionPerformed(ActionEvent e) {        textArea_1.setText(Base64Util.encryptBase64(textArea.getText().getBytes()));              }    });    btnNewButton_1.addActionListener(new ActionListener() {            @Override      public void actionPerformed(ActionEvent e) {        try {          textArea_1.setText(Base64Util.decryptBase64(textArea.getText()));        } catch (IOException e1) {          // TODO Auto-generated catch block          e1.printStackTrace();        }              }    });  }}

import java.io.IOException;import Decoder.BASE64Decoder;import Decoder.BASE64Encoder;public class Base64Util {    public static String encryptBase64(byte[] data){    return new BASE64Encoder().encode(data);//编码算法  }    public static String decryptBase64(String data) throws IOException{    byte[] resultBytes = new BASE64Decoder().decodeBuffer(data);//data代表密文    return new String(resultBytes);//返回字节数组的字符串形式  }}

其中的Base64Util工具类由极客学院提供;

其中需要sun.misc.BASE64Decode.jar  JDK开发包的支持;可以去JDK的官网下下载,也可以点击此链接下载

http://yunpan.cn/c3XmzH5Tmcg6b  访问密码 f450