java gui小型的文件管理系统

 

1. 读取系统盘符,为了安全起见,不在选项框中显示系统盘c及项目盘d

2.可创建文件并追加从JTextArea中添加的内容;

3.可删除文件及递归删除目录;

4. 递归列出指定目录下所有的文件及目录;

5.文件系统搜索功能实现

6. 恰当地使用布局

 

package com.wt010.file;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

/**
 * @author konecms
 * @date 2018年1月31日 下午5:02:24
 *
 */
public class CManager extends JFrame implements ActionListener,FocusListener {

    private JButton btnCreate, btnDelete,btnList,btnSearch;
    private JTextField txtFile,txtSearch;
    private JComboBox cmb;
    private JTextArea ta;

    public CManager() {
        // TODO Auto-generated constructor stub
        init();
    }

    public void init() {
        fr();
    }

    public void fr() {
        this.setTitle("文件管理系统");
        this.setResizable(false);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setLocationRelativeTo(null);
        BorderLayout bl = new BorderLayout();
        FlowLayout fl = new FlowLayout();
        GridLayout gl = new GridLayout(2, 1);
        JPanel jp1 = new JPanel();
        JPanel jp2 = new JPanel();
        this.setLayout(bl);
        jp1.setLayout(fl);
        jp2.setLayout(fl);

        getContentPane().add("North", jp1);
        getContentPane().add("Center", jp2);
        cmb = new JComboBox();
        File[] files = File.listRoots();
        for (int i = 0; i < files.length; i++) {
            if (!files[i].toString().equals("C:\\")
                    && !files[i].toString().equals("D:\\"))
                cmb.addItem(files[i]);
        }
        jp1.add(cmb);
        txtFile = new JTextField(20);
        txtFile.setText("请输入文件或目录 ");
        txtFile.addFocusListener(this);
        jp1.add(txtFile);
        txtSearch = new JTextField(10);
        txtSearch.setText("请输入搜索关键词 ");
        txtSearch.addFocusListener(this);
        jp1.add(txtSearch);
        btnCreate = new JButton("创建文件");
        btnCreate.addActionListener(this);
        btnDelete = new JButton("删除文件");
        btnDelete.addActionListener(this);
        btnList = new JButton("目录文件");
        btnList.addActionListener(this);
        btnSearch = new JButton("搜索");
        btnSearch.addActionListener(this);
        jp1.add(btnCreate);
        jp1.add(btnDelete);
        jp1.add(btnList);
        jp1.add(btnSearch);
        ta = new JTextArea(15,66);
        JScrollPane sp = new JScrollPane(ta);
        jp2.add(sp);
    }

    public void actionPerformed(ActionEvent e) {
        // TODO Auto-generated method stub
        Object source = e.getSource();
        String filename = txtFile.getText();
        String root = cmb.getSelectedItem().toString();

        if (filename.trim().equals("")) {
            JOptionPane.showMessageDialog(this, "请输入需要文件或目录名称 。 ");
            return;
        }
        filename = root + filename;
//点击搜索按钮事件
        if(source==btnSearch) {
            
        }
//点击删除按钮事件
        if (source == btnDelete) {
            boolean bl = delete(filename);
            if (bl)
                JOptionPane.showMessageDialog(this, "删除成功 ! ");
            else
                JOptionPane.showMessageDialog(this, "删除失败 ! ");
        }
//点击创建文件按钮事件        
        if (source == btnCreate) {
            File file = new File(filename);
            if (file.exists()) {
                try {
                    OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(file,true), "UTF-8");
                    BufferedWriter buf = new BufferedWriter(writer);
                    buf.write("\r\n"+ta.getText());
                    buf.close();
                    JOptionPane.showMessageDialog(this, "追加内容成功!");
                    ta.setText(null);
                } catch (UnsupportedEncodingException | FileNotFoundException e1) {
                    // TODO Auto-generated catch block
                    JOptionPane.showMessageDialog(this, e1.getMessage());
                } catch (IOException e1) {
                    // TODO Auto-generated catch block
                    JOptionPane.showMessageDialog(this, e1.getMessage());
                }
                return;
            }
            try {
                if (file.createNewFile()) {
                    OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
                    BufferedWriter buf = new BufferedWriter(writer);
                    buf.append(ta.getText());
                    buf.close();
                    JOptionPane.showMessageDialog(this, "创建成功!");
                }
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                JOptionPane.showMessageDialog(this, e1.getMessage());
            }
        }
        if(source==btnList){
            listFile(filename);
        }
        if(source==btnSearch) {
            ta.setText(null);
            String w=txtSearch.getText().trim();
            if(w.equals("")) return;
            listSearch(filename,w);
        }
    }
     
    @Override
    public void focusGained(FocusEvent e) {
        // TODO Auto-generated method stub
        if(e.getSource()==txtFile) {
            String txt=txtFile.getText().trim();
            if(txt.equals("请输入文件或目录"))
            txtFile.setText("");
        }
        if(e.getSource()==txtSearch) {
            String txt=txtSearch.getText().trim();
            if(txt.equals("请输入搜索关键词"))
            txtSearch.setText("");
        }
    }

    @Override
    public void focusLost(FocusEvent e) {
        // TODO Auto-generated method stub
        if(e.getSource()==txtSearch) {
            String txt=txtSearch.getText().trim();
            if(txt.equals(""))
            txtSearch.setText("请输入搜索关键词");
        }
        if(e.getSource()==txtFile) {
            String txt=txtFile.getText().trim();
            if(txt.equals(""))
            txtFile.setText("请输入文件或目录");
        }
    }

//点击搜索事件
    public void listSearch(String dirpath,String w) {
        
        File file=new File(dirpath);
        File[] files=file.listFiles();
        for(int i=0;i            String myfile=files[i].getAbsolutePath();
            if(myfile.indexOf(w)!=-1) {
                ta.append(myfile+"\r\n");
            }
            if(files[i].isDirectory()) {
                listSearch(files[i].getAbsolutePath(),w);
            }
        }
    }
    
//点击目录文件按钮事件
    public void listFile(String filename){
        File file=new File(filename);
        if(!file.exists()||!file.isDirectory()){
            return;
        }
        File[] dirList=file.listFiles();
        for(int i=0;i            ta.append(dirList[i].getAbsolutePath()+"\r\n");
            if(dirList[i].isDirectory()){
                listFile(dirList[i].getAbsolutePath());
            }
        }
    }
    public boolean delete(String filename) {
        File file = new File(filename);
        if (!file.exists()) {
            return false;
        }
        if (file.isDirectory()) {
            return deleteDirectory(filename);
        }
        if (file.isFile()) {
            return deleteFile(filename);
        }
        return false;
    }

    public boolean deleteDirectory(String dirFile2) {
        File file = new File(dirFile2);
        File[] dirFile = file.listFiles();
        for (int i = 0; i < dirFile.length; i++) {
            if (dirFile[i].isFile()) {
                deleteFile(dirFile[i].getAbsolutePath());
            }
            if (dirFile[i].isDirectory()) {
                deleteDirectory(dirFile[i].getAbsolutePath());
            }
        }
        if (file.delete()) {
            return true;
        }
        return false;
    }

    public boolean deleteFile(String filename) {
        File file = new File(filename);
        if (file.delete())
            return true;
        else
            return false;
    }

    public static void main(String[] args) {
        CManager util = new CManager();
        util.setVisible(true);
        util.pack();
    }

}



 

效果:

java gui小型的文件管理系统_第1张图片

 

转载于:https://www.cnblogs.com/phpdo100/p/8395298.html

你可能感兴趣的:(java gui小型的文件管理系统)