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등록일:2008-03-12 09:52:43

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제목:File Table HTML

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

/**
  *  This  class  implements  a  simple  directory  browser  using  the  HTML
  *  display  capabilities  of  the  JEditorPane  component.
  **/
public  class  FileTableHTML  {
    public  static  void  main(String[]  args)  throws  IOException  {
        //  Get  the  name  of  the  directory  to  display
        String  dirname  =  (args.length>0)?args[0]:System.getProperty("user.home");

        //  Create  something  to  display  it  in.
        final  JEditorPane  editor  =  new  JEditorPane();
        editor.setEditable(false);                              //  we're  browsing  not  editing
        editor.setContentType("text/html");            //  must  specify  HTML  text
        editor.setText(makeHTMLTable(dirname));    //  specify  the  text  to  display

        //  Set  up  the  JEditorPane  to  handle  clicks  on  hyperlinks
        editor.addHyperlinkListener(new  HyperlinkListener()  {
            public  void  hyperlinkUpdate(HyperlinkEvent  e)  {
    //  Handle  clicks;  ignore  mouseovers  and  other  link-related  events
    if  (e.getEventType()  ==  HyperlinkEvent.EventType.ACTIVATED)  {
        //  Get  the  HREF  of  the  link  and  display  it.
        editor.setText(makeHTMLTable(e.getDescription()));
    }
            }
        });

        //  Put  the  JEditorPane  in  a  scrolling  window  and  display  it.
        JFrame  frame  =  new  JFrame("FileTableHTML");
        frame.getContentPane().add(new  JScrollPane(editor));
        frame.setSize(650,  500);
        frame.setVisible(true);
    }

    //  This  method  returns  an  HTML  table  representing  the  specified  directory
    public  static  String  makeHTMLTable(String  dirname)  {
        //  Look  up  the  contents  of  the  directory
        File  dir  =  new  File(dirname);
        String[]  entries  =  dir.list();

        //  Set  up  an  output  stream  we  can  print  the  table  to.
        //  This  is  easier  than  concatenating  strings  all  the  time.
        StringWriter  sout  =  new  StringWriter();
        PrintWriter  out  =  new  PrintWriter(sout);

        //  Print  the  directory  name  as  the  page  title
        out.println("<H1>"  +  dirname  +  "</H1>");

        //  Print  an  "up"  link,  unless  we're  already  at  the  root
        String  parent  =  dir.getParent();
        if  ((parent  !=  null)  &&  (parent.length()  >  0))
            out.println("<A  HREF=\""  +  parent  +  "\">Up  to  parent  directory</A><P>");

        //  Print  out  the  table
        out.print("<TABLE  BORDER=2  WIDTH=600><TR>");
        out.print("<TH>Name</TH><TH>Size</TH><TH>Modified</TH>");
        out.println("<TH>Readable?</TH><TH>Writable?</TH></TR>");
        for(int  i=0;  i  <  entries.length;  i++)  {
            File  f  =  new  File(dir,  entries[i]);
            out.println("<TR><TD>"  +
            (f.isDirectory()  ?
                  "<a  href=\""+f+"\">"  +  entries[i]  +  "</a>"  :
                  entries[i])  +
            "</TD><TD>"  +  f.length()  +
            "</TD><TD>"  +  new  Date(f.lastModified())  +
            "</TD><TD  align=center>"  +  (f.canRead()?"x":"  ")  +
            "</TD><TD  align=center>"  +  (f.canWrite()?"x":"  ")  +
            "</TD></TR>");
        }
        out.println("</TABLE>");
        out.close();

        //  Get  the  string  of  HTML  from  the  StringWriter  and  return  it.
        return  sout.toString();
    }
}

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