package com.liutao.fileInfo;
import java.awt.*;
import java.io.*;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.event.*;
public class FileInfo extends JFrame{
private JLabel label ;
private JButton button_Open;
private JTextField text_Route;
private TextArea text_Info;
/*
* 构造函数FileInfor();
*/
public FileInfo(){
buildLayout();
}
public static void main(String[] args) {
new FileInfo();
}
/*
* 创建主界面buildLayout() , 返回一个容器Container
*/
private void buildLayout(){
final JFrame frame = new JFrame("文件查看小程序");
Container con = getContentPane();
JPanel pane = new JPanel();
pane.setLayout(new FlowLayout());
label = new JLabel("文件路径：" , JLabel.CENTER);
button_Open = new JButton("Open...");
text_Route = new JTextField(30);
text_Info = new TextArea();
text_Info.setEditable(false);
//增加事件监听内部类
button_Open.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
String path = getPath();
JFileChooser chooser = new JFileChooser(path);
FileNameExtensionFilter filter =
new FileNameExtensionFilter("txt & java ", "java", "txt");
chooser.setFileFilter(filter);
int returnVal = chooser.showOpenDialog(frame);
if(returnVal == JFileChooser.APPROVE_OPTION) {
showRoute(chooser.getSelectedFile().getAbsolutePath());
showInfo(chooser.getSelectedFile().getAbsolutePath());
}
else{
JOptionPane.showMessageDialog(null, "您还没有选取任何文件！", "错误提示", JOptionPane.WARNING_MESSAGE);
}
setPath(chooser.getSelectedFile().getPath());
}
});
pane.add(label);
pane.add(text_Route);
pane.add(button_Open);
con.add(pane , BorderLayout.NORTH);
con.add(text_Info , BorderLayout.CENTER);
frame.setContentPane(con);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(350, 150, 500, 400);
frame.setVisible(true);
frame.setResizable(false);
}
/*
* 配置路径
*/
protected void setPath(String str) {
// TODO Auto-generated method stub
File file = new File("c:\\Windows\\System32\\Fileconfig.ini");
FileWriter fw;
try {
fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(str);
bw.close();
fw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
/*
* 从文件中获取路径
*/
protected String getPath() {
// TODO Auto-generated method stub
File file = null;
FileReader fr = null ;
BufferedReader br = null ;
String path = null;
file = new File("c:\\Windows\\System32\\Fileconfig.ini");
try {
fr = new FileReader(file);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
path = "c:\\Windows\\System32";
}
}
br = new BufferedReader(fr);
try {
path = br.readLine();
} catch (IOException e) {
// TODO Auto-generated catch block
path = "c:\\Windows\\System32";
}
return path;
}
/*
* 信息显示
*/
protected void showInfo(String str) {
// TODO Auto-generated method stub
File file = new File(str);
text_Info.setText("文件是否是一个标准文件 : " + file.isFile()+"\r\n");
text_Info.append("文件是否是一个隐藏文件 : " + file.isHidden()+"\r\n");
text_Info.append("文件大小 : " + file.length()+"\r\n");
try {
FileInputStream fis = new FileInputStream(str);
BufferedInputStream bis = new BufferedInputStream(fis);
byte[] buf = new byte[1024];
int len = 0;
while((len = bis.read(buf))!=-1){
String string = new String(buf , 0 ,len);
text_Info.append("文件详情 : \r\n" + string+"\r\n");
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
protected void showRoute(String str) {
// TODO Auto-generated method stub
text_Route.setText(str);
}
}