自己写的加密解密小程序爆异常，大家帮忙看看！ - 黑马程序员技术交流社区

package cn.itcast.secret;
import java.awt.Container;
import java.awt.FileDialog;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class BuildSecret extends JFrame implements ActionListener {
private JPanel imagePanel;
private ImageIcon background;
// FileDialog fig;
JTextField jtf1 = new JTextField("传入要加密文件", 8);
JTextField jtf2 = new JTextField("传入要解密文件", 8);
JButton jbt11 = new JButton("导入");
JButton jbt12 = new JButton("加密");
JButton jbt21 = new JButton("导入");
JButton jbt22 = new JButton("解密");
public BuildSecret() {
// fig=new FileDialog(this,"打开",FileDialog.LOAD);有了JFileChooser，不需要了！
this.setTitle("加密解密器");
this.setLayout(new FlowLayout());
myEvent();
this.add(jtf1);
this.add(jbt11);
this.add(jbt12);
this.add(jtf2);
this.add(jbt21);
this.add(jbt22);
/*
* background=new ImageIcon("f:\123.jpg");//背景图片 JLabel label=new
* JLabel(background);//把背景图片显示在一个标签里面 label.setBounds(0, 0,
* background.getIconWidth(), background.getIconHeight());
* imagePanel=(JPanel
* )this.getContentPane();//把内容窗格转化为JPanel，否则不能用setOpaque()使内容窗格透明
* imagePanel.setOpaque(false); imagePanel.setLayout(new FlowLayout());
* this.getLayeredPane().setLayout(null);//把背景图片添加到分层窗格的最底层作为背景
* this.getLayeredPane().add(label,new Integer(Integer.MIN_VALUE));
* this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
* this.setResizable(false);
*/
setBac();
Container c = this.getContentPane();
JPanel jp = new JPanel();
jp.setOpaque(false);
c.add(jp);
this.setBounds(400, 250, 500, 360);
// this.setBounds(300,200,400,300);
this.setVisible(true);
}
private void myEvent() {
// TODO Auto-generated method stub
jbt11.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// fig.setVisible(true);
JFileChooser jfc = new JFileChooser();
if (jfc.showOpenDialog(BuildSecret.this) == JFileChooser.APPROVE_OPTION) {
String strPath = jfc.getSelectedFile().getAbsolutePath();
jtf1.setText(strPath);
}
}
});
jbt21.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// fig.setVisible(true);
JFileChooser jfc = new JFileChooser();
if (jfc.showOpenDialog(BuildSecret.this) == JFileChooser.APPROVE_OPTION) {
String strPath = jfc.getSelectedFile().getAbsolutePath();
jtf2.setText(strPath);
}
}
});
jbt12.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
File file = new File(jtf1.getText());
String str=file.getName();
FileInputStream fis = new FileInputStream(file);
FileOutputStream fos = new FileOutputStream("f:\\str.jpg");
int len = 0;
byte[] bs = new byte[100];
while ((len = fis.read(bs, 10, 80)) != -1) {
for (int i = 0; i < bs.length; i++) {
fos.write(bs, 0, len + 20);
}
fos.close();
fis.close();
}
} catch (FileNotFoundException e1) {
System.out.println("操作的文件不存在");
} catch (IOException e2) {
System.out.println("发生IO操作异常");
}
}
});
jbt22.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
try {
File file=new File(jtf2.getText());
FileInputStream fis2 = new FileInputStream(file);
FileOutputStream fos2 = new FileOutputStream("f:\\str1.jpg");
int len2 = 0;
byte[] bs2 = new byte[100];
while ((len2 = fis2.read(bs2)) != -1) {
fos2.write(bs2, 10, len2 - 20);
}
fos2.close();
fis2.close();
} catch (FileNotFoundException e1) {
System.out.println("操作的文件不存在");
} catch (IOException e1) {
System.out.println("发生IO操作异常");
}
}
});
}
public void setBac() {
//加的一个背景
((JPanel) this.getContentPane()).setOpaque(false);
ImageIcon img = new ImageIcon("f://123.jpg");
JLabel background = new JLabel(img);
this.getLayeredPane().add(background, new Integer(Integer.MIN_VALUE));
background.setBounds(0, 0, img.getIconWidth(), img.getIconHeight());
}
public static void main(String[] args) {
new BuildSecret();
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}

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package cn.itcast.secret;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.EventListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JTextField;
public class BuildSecret extends JFrame implements ActionListener {
private JPanel imagePanel;
private ImageIcon background;
// FileDialog fig;
JTextField jtf1 = new JTextField("传入要加密文件", 8);
JTextField jtf2 = new JTextField("传入要解密文件", 8);
JButton jbt11 = new JButton("导入");
JButton jbt12 = new JButton("加密");
JButton jbt21 = new JButton("导入");
JButton jbt22 = new JButton("解密");
public BuildSecret() {
// fig=new FileDialog(this,"打开",FileDialog.LOAD);有了JFileChooser，不需要了！
this.setTitle("加密解密器");
this.setLayout(new FlowLayout());
myEvent();
this.add(jtf1);
this.add(jbt11);
this.add(jbt12);
this.add(jtf2);
this.add(jbt21);
this.add(jbt22);
/*
* background=new ImageIcon("f:\123.jpg");//背景图片 JLabel label=new
* JLabel(background);//把背景图片显示在一个标签里面 label.setBounds(0, 0,
* background.getIconWidth(), background.getIconHeight());
* imagePanel=(JPanel
* )this.getContentPane();//把内容窗格转化为JPanel，否则不能用setOpaque()使内容窗格透明
* imagePanel.setOpaque(false); imagePanel.setLayout(new FlowLayout());
* this.getLayeredPane().setLayout(null);//把背景图片添加到分层窗格的最底层作为背景
* this.getLayeredPane().add(label,new Integer(Integer.MIN_VALUE));
* this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
* this.setResizable(false);
*/
setBac();
Container c = this.getContentPane();
JPanel jp = new JPanel();
jp.setOpaque(false);
c.add(jp);
this.setBounds(400, 250, 500, 360);
// this.setBounds(300,200,400,300);
this.setVisible(true);
}
private void myEvent() {
// TODO Auto-generated method stub
jbt11.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// fig.setVisible(true);
JFileChooser jfc = new JFileChooser();
if (jfc.showOpenDialog(BuildSecret.this) == JFileChooser.APPROVE_OPTION) {
String strPath = jfc.getSelectedFile().getAbsolutePath();
jtf1.setText(strPath);
}
}
});
jbt21.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// fig.setVisible(true);
JFileChooser jfc = new JFileChooser();
if (jfc.showOpenDialog(BuildSecret.this) == JFileChooser.APPROVE_OPTION) {
String strPath = jfc.getSelectedFile().getAbsolutePath();
jtf2.setText(strPath);
}
}
});
jbt12.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String str0="加密后";
try {
File file = new File(jtf1.getText());
String str=file.getName();
String[] arrString=str.split("\\.");
String str1=arrString[0];
String str2=arrString[1];
FileInputStream fis = new FileInputStream(file);
String str3=arrString[0]+"("+str0+")"+"."+arrString[1];
FileOutputStream fos = new FileOutputStream("f:\\\\"+str3);
int len = 0;
byte[] bs = new byte[100];
while ((len = fis.read(bs,10,80)) != -1) {
fos.write(bs, 0, len + 20);
System.out.println("加密进行中");
}
System.out.println("加密完成，文件在F盘目录");
fos.close();
fis.close();
} catch (FileNotFoundException e1) {
System.out.println("操作的文件不存在");
} catch (IOException e2) {
System.out.println("发生IO操作异常");
}
}
});
jbt22.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
String str0="解密后";
try {
File file=new File(jtf2.getText());
FileInputStream fis2 = new FileInputStream(file);
String str=file.getName();
String[] arrString=str.split("\\(");
String str2=arrString[0];
String str3=arrString[1];
String[] arrString1=str3.split("\\.");
String str4=arrString1[1];
String str5=str2+"("+str0+")"+"."+str4;
FileOutputStream fos2 = new FileOutputStream("f:\\\\"+str5);
int len2 = 0;
byte[] bs2 = new byte[100];
while ((len2 = fis2.read(bs2)) != -1) {
fos2.write(bs2, 10, len2 - 20);
System.out.println("解密进行中");
}
System.out.println("解密完成，文件在F盘目录");
fos2.close();
fis2.close();
} catch (FileNotFoundException e1) {
System.out.println("操作的文件不存在");
} catch (IOException e1) {
System.out.println("发生IO操作异常");
}
}
});
}
public void setBac() {
//加的一个背景
((JPanel) this.getContentPane()).setOpaque(false);
ImageIcon img = new ImageIcon("f://123.jpg");
JLabel background = new JLabel(img);
this.getLayeredPane().add(background, new Integer(Integer.MIN_VALUE));
background.setBounds(0, 0, img.getIconWidth(), img.getIconHeight());
}
public static void main(String[] args) {
new BuildSecret();
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
}
}

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