工具类：
import java.awt.FlowLayout;
import java.awt.Toolkit;
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.io.InputStream;
import java.io.InputStreamReader;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class FileSplitUtilClass {
public static int data;//拆分的个数；
public static String str;
public static boolean split(File filePath,int number) {
byte[] b=new byte[number];
str=filePath.getAbsolutePath();
int i=0;//创建文件
try {
FileInputStream file=new FileInputStream(filePath);
try {
while(file.read(b)!=-1){
i++;
FileOutputStream fileout=new FileOutputStream(str+i);
fileout.write(b);
}
file.close();
FileSplitUtilClass.data=i;
filePath.delete();
return true;
}catch (IOException e) {
// TODO Auto-generated catch block
System.out.println("split error");
e.printStackTrace();return false;
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
System.out.println("no find");
e.printStackTrace();return false;
}
}
////////////////////////////////////////
public static void fixFile(File filePath){
byte[] b=new byte[1024];
// String str=filePath.getAbsolutePath();
int i=0;//创建文件
try {
FileOutputStream file=new FileOutputStream(filePath);
try {
System.out.println(FileSplitUtilClass.data);
while(true&i<FileSplitUtilClass.data){
i++;
FileInputStream file1=new FileInputStream(FileSplitUtilClass.str+i);
if(file1.read(b)!=-1){
file.write(b);
}else{
break;
}
}
}catch (IOException e) {
// TODO Auto-generated catch block
System.out.println("no file");
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
System.out.println("failure");
e.printStackTrace();
}
}
/////////////////////
public static JFrame getJFrame(String JFrameName){
JFrame jf=new JFrame(JFrameName);
Toolkit tk=Toolkit.getDefaultToolkit();
jf.setSize(500,330);
jf.setLocation((tk.getScreenSize().width-jf.getWidth())/2,(tk.getScreenSize().height-jf.getHeight())/2);
return jf;
}
//////////////////////////
public static JPanel getJButton(String JButtonName1,String JButtonName2,Object obj){
JPanel jp=new JPanel(new FlowLayout());
JButton jb1=new JButton(JButtonName1);
jb1.addActionListener((ActionListener) obj);
JButton jb2=new JButton(JButtonName2);
jb2.addActionListener((ActionListener)obj);
jp.add(jb1);
jp.add(jb2);
return jp;
}
///////////////////////////////////////
}
检测类：
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class Split implements ActionListener {
JFrame jf;JTextField jt;int number;
public Split(){
jf=FileSplitUtilClass.getJFrame("Filesplit");
JPanel jp=FileSplitUtilClass.getJButton("拆分","组合", this);
jt=new JTextField(10);
JLabel jl=new JLabel("输入字节大小");
JPanel jp1=new JPanel(new FlowLayout());
jp1.add(jl);jp1.add(jt);
jf.add(jp1,BorderLayout.CENTER);
jf.add(jp,BorderLayout.SOUTH);
jf.setVisible(true);
javax.swing.JOptionPane.showMessageDialog(jf,"请输入字节");
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
String str=arg0.getActionCommand();
if("拆分".equals(str)){
JFileChooser jfc=new JFileChooser();
jfc.showOpenDialog(null);//注意在这里的null表示对话框弹出的位置；
if(jfc.showOpenDialog(null)==JFileChooser.APPROVE_OPTION){
File filePath=jfc.getSelectedFile();
if(FileSplitUtilClass.split(filePath,Integer.parseInt(jt.getText()))){
javax.swing.JOptionPane.showMessageDialog(jf,"ok");
}else{
javax.swing.JOptionPane.showMessageDialog(jf,"fail");
}
}else{
javax.swing.JOptionPane.showMessageDialog(jf,"你已经取消了");
}
}
if("组合".equals(str)){
JFileChooser jfc=new JFileChooser();
jfc.showOpenDialog(null);//注意在这里的null表示对话框弹出的位置；
if(jfc.showOpenDialog(null)==JFileChooser.APPROVE_OPTION){
File filePath=jfc.getSelectedFile();
FileSplitUtilClass.fixFile(filePath);
javax.swing.JOptionPane.showMessageDialog(jf,"fixed ok");
}else{
javax.swing.JOptionPane.showMessageDialog(jf,"你已经取消了");
}
}
}
public static void main(String[] args){
Split s=new Split();
}
}
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发表于 2016-10-4 14:19:27
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