文件加密解密程序

importjava.awt.*;importjava.awt.event.*;importjava.io.*;importjavax.swing.*;publicclasskeyextendsJFrame{intshu1;JLabeljl1,jl2;Stringcc;JButtonqueding,xuanz,jiami,jiemi;JTextFieldlujin,key;JTextAreanr;JRadioButtonqu,xie;ButtonGroupfz;Filef;publickey(){this.setTitle("Java加密与解密");Containerc=getContentPane();JPaneljp1=newJPanel();jl1=newJLabel("输入途径");lujin=newJTextField(15);xuanz=newJButton("选择");jp1.add(jl1);jp1.add(lujin);jp1.add(xuanz);c.add(jp1,BorderLayout.NORTH);nr=newJTextArea();c.add(newJScrollPane(nr),BorderLayout.CENTER);qu=newJRadioButton("写入");xie=newJRadioButton("取出",true);fz=newButtonGroup();fz.add(qu);fz.add(xie);jl2=newJLabel("密钥");key=newJTextField(15);jiami=newJButton("加密");jiemi=newJButton("解密");JPaneljp4=newJPanel();jp4.setLayout(newGridLayout(2,1,5,5));JPaneljp2=newJPanel();jp2.add(jl2);jp2.add(key);jp2.add(jiami);jp2.add(jiemi);jp4.add(jp2);JPaneljp3=newJPanel();queding=newJButton("确定");jp3.add(qu);jp3.add(xie);jp3.add(queding);jp4.add(jp3);c.add(jp4,BorderLayout.SOUTH);queding.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevent){jian();if(qu.isSelected())shuchu();if(xie.isSelected())qu();}});xuanz.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevent){JFileChooserfileChooser=newJFileChooser();//实例化文献选择器fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);//设置文献选择模式,此处为文献和目录均可if(fileChooser.showOpenDialog(key.this)==JFileChooser.APPROVE_OPTION){//弹出文献选择器,并判断与否点击了打开按钮StringfileName=fileChooser.getSelectedFile().getAbsolutePath();//得到选择文献或目录的绝对途径lujin.setText(fileName);}}});jiemi.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevent){ObjectInputStreaminput;try{input=newObjectInputStream(newFileInputStream(lujin.getText()));intmima=Integer.parseInt(key.getText());AAac=(AA)input.readObject();if(ac.getShu()==mima){nr.setText(ac.cc);shuchu();}else{nr.setText("错误的key");}}catch(Exceptione){//e.printStackTrace();nr.setText("无法解密");}}});jiami.addActionListener(newActionListener(){publicvoidactionPerformed(ActionEventevent){AAa=newAA(nr.getText());key.setText(a.shu+"");try{ObjectOutputStreamoutput=newObjectOutputStream(newFileOutputStream(lujin.getText()));output.writeObject(a);output.flush();output.close();qu();baocun();}catch(Exceptione){//e.printStackTrace();nr.setText("必须选择加密文献保留地址，文献不存在或者无法加密文献,加密文献不能具有换行");}}});setSize(380,350);setVisible(true);}publicvoidjian(){f=newFile(lujin.getText());try{f.createNewFile();}catch(IOExceptione){JOptionPane.showMessageDialog(null,"途径错误");}}publicvoidshuchu(){try{FileOutputStreamout=newFileOutputStream(f);bytebuf[]=nr.getText().getBytes();try{out.write(buf);out.flush();out.close();}catch(IOExceptione){//e.printStackTrace();}}catch(FileNotFoundExceptione){//e.printStackTrace();}}publicvoidqu(){try{FileInputStreamin=newFileInputStream(f);inta=(int)f.length();bytebuf[]=newbyte[a];try{intlen=in.read(buf);if(len==-1)System.out.println("文献为空");elsenr.setText(newString(buf,0,len));}catch(IOExceptione){//e.printStackTrace();}}catch(FileNotFoundExceptione){//e.printStackTrace();}}publicstaticvoidmain(Stringarge[]){keys=newkey();s.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}publicStringmzi(){Stringccc="";intzu[]={1,2,3,4,5,6,7,8,9};for(inti=0;i<6;i++){intsecond=(int)(Math.random()*9);ccc+=zu[second];}returnccc;}publicvoidbaocun(){AAa=newAA();shu1=a.getShu();a.shu=shu1;}}classAAimplementsSerializable{Stringcc;publicintshu;publicAA(){}publicintgetShu(){returnshu;}publicvoidsetS