java版MD5/SHA验证工具

/************************************************************** * MessageDigester * MD.java * * Author: ShuiDaJiao<wolf86@126.com> * Parameter: None * Creation date: 2007.11.10 * LastUpdate: None * Version:1.0 **************************************************************/ import java.awt.Color; import java.awt.Dimension; import java.awt.BorderLayout; import java.awt.GridLayout; import java.awt.FileDialog; import java.awt.Toolkit; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.dnd.DnDConstants; import java.awt.dnd.DropTarget; import java.awt.dnd.DropTargetDragEvent; import java.awt.dnd.DropTargetDropEvent; import java.awt.dnd.DropTargetEvent; import java.awt.dnd.DropTargetListener; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.io.File; import java.io.FileInputStream; import java.security.MessageDigest; import java.util.Iterator; import javax.swing.JButton; import javax.swing.ButtonGroup; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.JTextField; import javax.swing.border.LineBorder; class MDCompute{ String algorithm=null; StringBuffer resultBuf=new StringBuffer(""); String result=null; byte [] input; byte [] output; MessageDigest mess=null; MDCompute(){ } MDCompute(String algorithm,byte [] input){ this.algorithm=algorithm; this.input=input; } public void setParam(String algorithm,byte [] input){ this.algorithm=algorithm; this.input=input; } public void setParam(String algorithm){ this.algorithm=algorithm; } public String getResult(){ try{ mess=MessageDigest.getInstance(algorithm); mess.update(input); output=mess.digest(); int val; for (int i=0; i<output.length; i++){ //val = ((int) output[i] ) & 0xff; val=output[i]; if(val<0) val+= 256; if (val < 16) resultBuf.append("0"); resultBuf.append(Integer.toHexString(val)); } result=resultBuf.toString(); resultBuf.delete(0,resultBuf.length());; return result; } catch(Exception e){ System.out.println("error"); return null; } } public String getResult(String algorithm){ this.algorithm=algorithm; return getResult(); } } public class MD extends JFrame implements ActionListener , MouseListener,DropTargetListener{ JButton browse=new JButton("浏 览"); JButton compute=new JButton("计 算"); JButton compare=new JButton("比 较"); JButton exit=new JButton("退 出"); JTextField fileField=new JTextField(); JTextField resultField=new JTextField(); JTextField compareField=new JTextField(); JTextField fileSizeField=new JTextField(); JRadioButton md5=new JRadioButton("MD5",true); JRadioButton sha=new JRadioButton("SHA"); ButtonGroup bg=new ButtonGroup(); MDCompute mdc=new MDCompute(); String filePath=null; byte [] content; long time1=0; long time2=0; long time3=0; MD(){ setTitle("--MessageDigester-- by ShuiDaJiao"); Dimension size=Toolkit.getDefaultToolkit().getScreenSize(); setBounds((size.width-450)/2,(size.height-200)/2,450,200); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setResizable(false); GridLayout gl=new GridLayout(5,1,10,10); new DropTarget(this,this); bg.add(md5); bg.add(sha); fileField.setForeground(Color.BLUE); resultField.setForeground(Color.BLUE); compareField.setForeground(Color.GREEN); fileSizeField.setForeground(Color.BLUE); fileField.setToolTipText("支持拖放"); resultField.setToolTipText("双击复制"); resultField.setEditable(false); compareField.setToolTipText("双击粘贴"); fileSizeField.setToolTipText("双击复制"); fileSizeField.setEditable(false); JPanel panel1=new JPanel(gl); JPanel panel2=new JPanel(gl); JPanel panel3=new JPanel(gl); JPanel radioPane=new JPanel(); panel1.add(new JLabel("文件路径:")); panel1.add(new JLabel("选择算法:")); panel1.add(new JLabel("计算结果:")); panel1.add(new JLabel("参照值串:")); panel1.add(new JLabel("文件大小:")); panel2.add(fileField); radioPane.add(md5); radioPane.add(sha); radioPane.setBorder(new LineBorder(Color.GREEN,1)); panel2.add(radioPane); panel2.add(resultField); panel2.add(compareField); panel2.add(fileSizeField); panel3.add(browse); panel3.add(compute); panel3.add(new JLabel()); panel3.add(compare); panel3.add(exit); JPanel rootPane=new JPanel(new BorderLayout(5,1)); rootPane.setBorder(new LineBorder(Color.BLUE,3)); rootPane.add(panel1,"West"); rootPane.add(panel2); rootPane.add(panel3,"East"); getContentPane().add(rootPane); resultField.addMouseListener(this); compareField.addMouseListener(this); fileSizeField.addMouseListener(this); browse.addActionListener(this); compute.addActionListener(this); compare.addActionListener(this); exit.addActionListener(this); } public void actionPerformed(ActionEvent e){ Object o=e.getSource(); if(o==browse){ FileDialog openFile=new FileDialog(this,"打开文件...",FileDialog.LOAD); openFile.setVisible(true); String dir=openFile.getDirectory(); String name=openFile.getFile(); if(dir!=null&&name!=null){ filePath=dir+name; fileField.setText(filePath); resultField.setText(""); fileSizeField.setText(""); } } else if(o==compute){ doCompute(); } else if(o==compare&&!resultField.getText().equals("")&&!compareField.getText().equals("")){ if(resultField.getText().equalsIgnoreCase(compareField.getText())) JOptionPane.showMessageDialog(this,"比较结果相同 !","比较结果",JOptionPane.INFORMATION_MESSAGE); else JOptionPane.showMessageDialog(this,"比较结果不同 !","比较结果",JOptionPane.WARNING_MESSAGE); } else if(o==exit){ System.exit(0); } } private void doCompute(){ try{ FileInputStream fis=new FileInputStream(fileField.getText()); content=new byte[fis.available()]; fis.read(content); fis.close(); fileSizeField.setText(Integer.toString(content.length)+" (Byte)"); mdc.setParam((md5.isSelected()?"MD5":"SHA"),content); resultField.setText(mdc.getResult()); } catch(Exception ex) { resultField.setText("文件名无效"); fileSizeField.setText(""); } } public void mouseClicked(MouseEvent e) { long occurTime=e.getWhen(); Object o=e.getSource(); if(o==resultField){ if((occurTime-time1)<300){ resultField.selectAll(); resultField.copy(); } time1=occurTime; } else if(o==compareField){ if((occurTime-time2)<300){ compareField.selectAll(); compareField.paste(); } time2=occurTime; } else{ if((occurTime-time3)<300){ fileSizeField.selectAll(); fileSizeField.copy(); } time3=occurTime; } } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void dragEnter(DropTargetDragEvent e){ if(e.getDropAction()!=DnDConstants.ACTION_MOVE){ e.rejectDrag(); } } public void dragExit(DropTargetEvent e){ } public void dragOver(DropTargetDragEvent e){ } public void dropActionChanged(DropTargetDragEvent e){ } public void drop(DropTargetDropEvent e){ e.acceptDrop(DnDConstants.ACTION_COPY); Transferable trans = e.getTransferable(); DataFlavor[] fla = trans.getTransferDataFlavors(); for (int i=0; i<fla.length; i++){ DataFlavor d=fla[i]; try{ if(d.equals(DataFlavor.javaFileListFlavor)){ java.util.List fileList = (java.util.List)trans.getTransfe