一个创建目录文件的程序及代码

//makeindex.java
//make file index

import java.util.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

//文件过滤器
class dirFilter implements FilenameFilter
{
String[] ext;
public dirFilter(String[] ext)
{
this.ext = ext;
}

public boolean accept(File dir,String name)
{
if(ext==null)
return true;

name = name.toLowerCase();
for(int i=0;i<ext.length;i++)
{
if(name.endsWith(ext[i])){
return true;
}
}
return false;
}
}

//程序主类
public class makeindex extends JFrame
{
//程序主函数
public static void main(String[] args){
System.setProperty("swing.plaf.metal.controlFont","宋体");
new makeindex();
}

//类数据成员
//调试用变量
public final boolean DEBUG = true;
//根容器
private Container rootContainer = getContentPane();
private JRootPane rootPane = getRootPane();


private JPanel mainPanel = new JPanel();
private JPanel buttonPanel = new JPanel();

//主面板输入输出框
private JTextField ml = new JTextField(); //源文件目录
private JButton btn_ml = new JButton("目录");//源文件目录
private JTextField out_name = new JTextField();//输出文件名
private JCheckBox new_win = new JCheckBox("新窗口",true);//是否在新网页中打开
private JTextField title = new JTextField();//网页标题
private String[] lx = {"全部文件",".htm;.html",".doc;.xls",".c;.h;.java"};
private JComboBox leixing = new JComboBox(lx);


//按钮面板按钮数据
private JButton make = new JButton ("生成");
private JButton exit = new JButton ("退出");


File files;//一个目录对象
String[] str_filename;//文件名数组
BufferedWriter html_Out;//文件输出
StringBuffer str_href = new StringBuffer("<a href="");//一个字符串的缓冲


//构造函数
public makeindex()
{
setTitle("文件目录生成器 in Java V0.1 版");
setDefaultCloseOperation(EXIT_ON_CLOSE);
initFrame();
pack();
int w = this.getWidth()+130;
int h = this.getHeight();
Dimension ScreenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds((int)((ScreenSize.width-w)/2),(int)((ScreenSize.height-h)/2),w,h);
setResizable(false);
setVisible(true);
}

private void initFrame()
{
getMainPanel();
getButtonPanel();
rootPane.setDefaultButton(make);
rootContainer.add(mainPanel,BorderLayout.NORTH);
rootContainer.add(buttonPanel,BorderLayout.SOUTH);
}

private void getMainPanel()
{
GridBagLayout gbl = new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
mainPanel.setLayout(gbl);
gbc.anchor = GridBagConstraints.WEST;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.gridwidth = 1;
gbc.gridx = GridBagConstraints.RELATIVE;
gbc.gridy = 0;
mainPanel.add(new JLabel("源文件目录:",JLabel.RIGHT),gbc);
gbc.weightx = 1;
mainPanel.add(ml,gbc);
gbc.weightx = 0;
mainPanel.add(btn_ml,gbc);
gbc.gridy = 1;
mainPanel.add(new JLabel("输出文件名:",JLabel.RIGHT),gbc);
gbc.weightx = 1;
mainPanel.add(out_name,gbc);
gbc.weightx = 0;
mainPanel.add(new_win,gbc);


gbc.gridy = 2;
mainPanel.add(new JLabel("网页标题:",JLabel.RIGHT),gbc);
gbc.gridwidth = GridBagConstraints.REMAINDER;
mainPanel.add(title,gbc);

gbc.gridy = 3;
gbc.gridwidth = 1;
mainPanel.add(new JLabel("文件类型:",JLabel.RIGHT),gbc);
gbc.gridwidth = GridBagConstraints.REMAINDER;
mainPanel.add(leixing,gbc);

ml.setText(".");
out_name.setText("index.htm");
title.setText("文件目录生成器 in Java V0.1 版");
leixing.setEditable(true);
leixing.setSelectedIndex(0);

ml.setToolTipText("请在这里填写源文件的目录");
btn_ml.setToolTipText("选择源文件目录");
out_name.setToolTipText("在源文件目录的输出文件名");
new_win.setToolTipText("是否在新窗口中打开文件");
title.setToolTipText("输出目录文件的标题");
leixing.setToolTipText("输入多种类型文件之间请用分号分隔");


btn_ml.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JFileChooser fc = new JFileChooser();
fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
String mm = ml.getText();
if(mm!=null)
{
fc.setCurrentDirectory(new File(mm));
}
if(fc.showOpenDialog(null)==JFileChooser.APPROVE_OPTION)
{
File f = fc.getSelectedFile();
ml.setText(f.getPath());
}
}
});

}


void getButtonPanel()
{
buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));
buttonPanel.add(make);
buttonPanel.add(new JLabel("华软工作室(程旭)"));
buttonPanel.add(exit);

exit.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
});

make.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
makehtml();
}
});
}

boolean makehtml()
{
String str_ml = ml.getText();
String str_out = out_name.getText();
String str_title = title.getText();

String[] exp = getLx();

boolean b = new_win.isSelected();
if((str_ml==null)||(str_out==null)){
return false;
}
files = new File(str_ml);
str_filename = files.list(new dirFilter(exp));

if(DEBUG){
for(int i=0;i<str_filename.length;i++)
System.out.println(str_filename[i]);
}

str_out = str_ml+File.separator+str_out;
if(DEBUG){
System.out.println(str_out);
}

try{
html_Out = new BufferedWriter(new FileWriter(str_out));

StringBuffer ss = new StringBuffer(100);

ss.append("<html><head><title>");
if(str_title.equals(""))
str_title = "文件目录生成器 in Java V0.1 版";
ss.append(str_title);
ss.append("</title></head><style type=text/css>");
ss.append("A.a1:link {text-decoration:none;color:#00007f;}");
ss.append("A.a1:visited {text-decoration:none;color:#00007f;}");
ss.append("A.a1:active {text-decoration:none;color:#ff0000;}");
ss.append("</style><body bgcolor=#FFF3C9>");
ss.append("<p align=center><font color=#FF00FF size=7 face=楷体_GB2312>");
ss.append(str_title);
ss.append("</font><p>");
html_Out.write(ss.toString());

for(int i=0;i<str_filename.length;i++)
{
str_href.setLength(9);
str_href.append(str_filename[i]);
str_href.append("" class=a1");
if(b){
str_href.append(" target=_blank>");
}
else{
str_href.append(" >");
}
str_href.append(str_filename[i]);
str_href.append("</a><br>");
html_Out.write(str_href.toString());
html_Out.newLine();
}

html_Out.write("</body>");
html_Out.newLine();
html_Out.write("</html>");

html_Out.close();
}
catch(IOException ioe){
ioe.printStackTrace();

try{
html_Out.close();
}
catch(IOException ioe1){
return false;
}

return false;
}

return true;
}

String[] getLx()
{
String s = (String)leixing.getSelectedItem();
if((s==null) || (s.indexOf("全部文件") != -1))
return null;

ArrayList ss = new ArrayList(10);
int off1 = -1;
int off2 = 0;

while((off1 = s.indexOf(';',off2)) != -1)
{
ss.add(s.substring(off2,off1));
off2 = off1+1;
}
ss.add(s.substring(off2));
String[] exp = (String[])ss.toArray(new String[0]);
return exp;
}
}