读取文件的目录结构和统计文件的代码信息

读取目录结构 FileInfo.java：

package com.data.io;
import java.io.*;
/**
* FileInfo.java
* 文件信息
* @author Administrator
*
*/
public class FileInfo {
/**
* 文件(目录)的大小 (字节)
*/
private long size;
private int fileSize;
private int folderSize;
private File file;

public FileInfo(File file) {
this.file = file;
}
public long getSize() {
return size;
}
public void setSize(long size) {
this.size = size;
}
public int getFileSize() {
return fileSize;
}
public void setFileSize(int fileSize) {
this.fileSize = fileSize;
}
public int getFolderSize() {
return folderSize;
}
public void setFolderSize(int folderSize) {
this.folderSize = folderSize;
}

public void print() {
System.out.printf("文件：%s\n", file.getAbsolutePath());
System.out.printf("大小: %,d\n", size);
System.out.printf("目录: %,d\n", folderSize);
System.out.printf("文件: %,d\n", fileSize);
}

}

View Code
 

读取代码信息：CodeInfo.java：

package com.data.io;

public class CodeInfo {
/**
* 总行
*/
int total;
/**
* 代码行
*/
int codeLine;
/**
* 空行
*/
int blankLine;
/**
* 注释行
*/
int commentLine;

public void print() {
System.out.printf("总行：%,d\n",total);
System.out.printf("代码行: %,d\n",codeLine);
System.out.printf("空行: %,d\n",blankLine);
System.out.printf("单注释行: %,d\n",commentLine);
}
}

View Code
 

具体实现功能的文件 Model.java:

package com.data.io;

import java.io.*;
import java.awt.*;

import javax.naming.directory.DirContext;
import javax.sound.midi.MidiDevice.Info;
import javax.swing.*;

import javafx.scene.shape.Line;
/**
* Model.java
* @author Administrator
*
*/
public class Model {

/**
* 统计一个文件中的代码信息
*
* @param sourceFile
* @return
*/
public static CodeInfo getCodeInfo(File sourceFile) {
CodeInfo info = new CodeInfo();
// 每次读取文件中的一行，这一行什么开始，(/* //)，什么时候结束(*/)
try (BufferedReader in = new BufferedReader(new FileReader(sourceFile))) {
String line;
boolean flag = false;
while (null != (line = in.readLine())) {
info.total++;

// 截断前后的空格
line = line.trim();
if (line.startsWith("/*"))
{
flag = true;
}
if (flag) {
// 放在前面防止单行的这个注释法
info.commentLine++;
if (line.endsWith("*/")) {
flag = false;
}
} else {
if (line.length() == 0) {
// 空行
info.blankLine++;
}
if (line.startsWith("//")) {
info.commentLine++;
}
}
}
info.codeLine = info.total - info.blankLine - info.commentLine;

} catch (Exception e) {
// TODO: handle exception
}
return info;
}
/**
*
* @param file
*             目标文件
* @return FileInfo 文件的统计信息
*/
public static FileInfo getFileInfo(File file) {
FileInfo info = new FileInfo(file);

info.setSize(countSize(file));
info.setFileSize(countFileSize(file));
info.setFolderSize(countFolderSize(file));
return info;
}

private static int countFolderSize(File dir) {
int size = 0;

// 获得目录中的所有内容
File[] files = dir.listFiles();
//遍历
for(File f : files) {
if(f.isDirectory()) {
//文件夹则加一
size++;
//进入该目录,统计目录中文件夹的数量
//注意不能只写countFileSize(f)，这样每层都有一个新的size
size += countFolderSize(f);
}
}
return size;
}

private static int countFileSize(File dir) {
int size = 0;

// 获得目录中的所有内容
File[] files = dir.listFiles();

for(File f : files) {
if(f.isFile()) {
//文件则加一
size++;

}else {
//目录:进入该目录,统计目录中文件的数量
size += countFileSize(f);
}
}

return size;

}

private static long countSize(File dir) {
long size = 0;

// 获得目录中的所有内容
File[] files = dir.listFiles();

for(File f : files) {
if(f.isFile()) {
//文件
long s = f.length();
size += s;
}else {
//目录
size += countSize(f);
}
}

return size;
}
}

View Code
 

运行文件App.java:

package com.data.io;

import java.io.File;
/**
* App.java
* @author Administrator
*
*/
public class App {
public static void main(String[] args) {
//        File file = new File("G:/jdk1.8.0_131");
//        FileInfo info = Model.getFileInfo(file);
//        info.print();

CodeInfo info = Model.getCodeInfo(new File("code.txt"));
info.print();
}
}

View Code
 

运行结果：

 

总行：17
代码行: 7
空行: 2
单注释行: 8

 

文件：G:\jdk1.8.0_131
大小: 458,125,906
目录: 619
文件: 9,196

 

如果用Swing做个界面的话：

　　用windowsbuilder做：

UI.java（运行接口）

package com.data.io;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.GridBagLayout;
import javax.swing.JLabel;
import java.awt.GridBagConstraints;
import javax.swing.JButton;
import javax.swing.JFileChooser;

import java.awt.Insets;
import javax.swing.JTextField;
import java.awt.event.ActionListener;
import java.io.File;
import java.awt.event.ActionEvent;

public class UI extends JFrame {

private JPanel contentPane;
private JTextField textField;
private JLabel lblNewLabel_1;

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UI frame = new UI();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
public UI() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 712, 554);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[]{0, 0, 0, 0};
gbl_contentPane.rowHeights = new int[]{0, 0, 0, 0, 0, 0};
gbl_contentPane.columnWeights = new double[]{1.0, 1.0, 0.0, Double.MIN_VALUE};
gbl_contentPane.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 1.0, Double.MIN_VALUE};
contentPane.setLayout(gbl_contentPane);

JLabel lblNewLabel = new JLabel("New label");
GridBagConstraints gbc_lblNewLabel = new GridBagConstraints();
gbc_lblNewLabel.anchor = GridBagConstraints.EAST;
gbc_lblNewLabel.insets = new Insets(0, 0, 5, 5);
gbc_lblNewLabel.gridx = 0;
gbc_lblNewLabel.gridy = 0;
contentPane.add(lblNewLabel, gbc_lblNewLabel);

textField = new JTextField();
GridBagConstraints gbc_textField = new GridBagConstraints();
gbc_textField.insets = new Insets(0, 0, 5, 5);
gbc_textField.fill = GridBagConstraints.HORIZONTAL;
gbc_textField.gridx = 1;
gbc_textField.gridy = 0;
contentPane.add(textField, gbc_textField);
textField.setColumns(10);

JButton btnNewButton = new JButton("选择目录");
btnNewButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = new JFileChooser();
//                chooser.setFileFilter(filter);
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int r = chooser.showOpenDialog(UI.this);
if(r == JFileChooser.APPROVE_OPTION) {
File dir = chooser.getSelectedFile();
FileInfo info = Model.getFileInfo(dir);
//显示结果
textField.setText(dir.getAbsolutePath());
lblNewLabel.setText(String.format("大小：%,d", info.getSize()));
}
}
});
GridBagConstraints gbc_btnNewButton = new GridBagConstraints();
gbc_btnNewButton.insets = new Insets(0, 0, 5, 0);
gbc_btnNewButton.gridx = 2;
gbc_btnNewButton.gridy = 0;
contentPane.add(btnNewButton, gbc_btnNewButton);

lblNewLabel_1 = new JLabel("New label");
GridBagConstraints gbc_lblNewLabel_1 = new GridBagConstraints();
gbc_lblNewLabel_1.insets = new Insets(0, 0, 5, 5);
gbc_lblNewLabel_1.gridx = 0;
gbc_lblNewLabel_1.gridy = 1;
contentPane.add(lblNewLabel_1, gbc_lblNewLabel_1);

JLabel lblNewLabel_2 = new JLabel("New label");
GridBagConstraints gbc_lblNewLabel_2 = new GridBagConstraints();
gbc_lblNewLabel_2.insets = new Insets(0, 0, 5, 5);
gbc_lblNewLabel_2.gridx = 0;
gbc_lblNewLabel_2.gridy = 2;
contentPane.add(lblNewLabel_2, gbc_lblNewLabel_2);

JLabel lblNewLabel_3 = new JLabel("New label");
GridBagConstraints gbc_lblNewLabel_3 = new GridBagConstraints();
gbc_lblNewLabel_3.insets = new Insets(0, 0, 5, 5);
gbc_lblNewLabel_3.gridx = 0;
gbc_lblNewLabel_3.gridy = 3;
contentPane.add(lblNewLabel_3, gbc_lblNewLabel_3);

//        JPanel panel = new JPanel();
PieView pie = new PieView();
//        panel.add(pie);

GridBagConstraints gbc_panel = new GridBagConstraints();
gbc_panel.gridwidth = 3;
gbc_panel.fill = GridBagConstraints.BOTH;
gbc_panel.gridx = 0;
gbc_panel.gridy = 4;
contentPane.add(pie, gbc_panel);
}

}

View Code
PieView.java:

package com.data.io;

import java.awt.Graphics;

import javax.swing.JPanel;

import com.sun.prism.paint.Color;

public class PieView extends JPanel{

//    double[] data;
//
//    Color[] colors = {Color.BLUE,}
@Override
public void paint(Graphics g) {

super.paint(g);
//获得panel的宽，高
int w = getWidth();
int h = getHeight();
int x = w/2;
int y = h/2;
int r = w<h? w : h ;
//        g.fillOval(0, 0, w, h);
g.fillOval(x- r/2, y- r/2, r, r);
//        g.fillRect(w- r/2, h- r/2, r, r);

}
}

View Code
结果：