创建索引小程序 ，Lucene2.1
//按着课本写一个 Indext小程序 不过有点小错误 会出创建失败 不知道为啥？？
//可能版本过时了那他练练手吧
package FirstSearcher;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.sql.Date;
import java.text.SimpleDateFormat;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import tool.*;
//import java.io.FileReader;
public class LucenceIndexer {
// TODO Auto-generated method stub
/**
* @param args
*/
private JTextField jtfa;
private JTextField jtfb;
private JButton jba;
private JButton jbb;
private JButton jbc;
private static JTextArea jta;
// creatAndShowGUI用来设置索引器运行时的外观
private void creatAndShowGUI()
{
//设置跨平台外观感受
/*
*平常做法
* String lf=UIManager.getCrossPlatformLookAndFeelClassName();
try
{
UIManager.setLookAndFeel(lf);
}
catch(Exception ce)
{
JOptionPane.showMessageDialog(null,"无法设定外观感受！");
}*/
//java感受
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame=new JFrame("Lixingle Indexer!1534432371@qq.COM");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JFileChooser fc=new JFileChooser();
fc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
Container con=frame.getContentPane();
con.setLayout(new BorderLayout());
JPanel jpup=new JPanel();
jpup.setLayout(new GridLayout(3,2));
jtfa=new JTextField(30);
jba=new JButton("选择被索引的文件存放路径");
jba.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
int r=fc.showOpenDialog(null);
if (r==JFileChooser.APPROVE_OPTION)
{
jtfa.setText(fc.getSelectedFile().getPath());
jbc.setEnabled(true);
}
}
}
);
jtfb=new JTextField(30);
JButton jbb=new JButton("选择索引的存放路径");
jbb.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
int r=fc.showOpenDialog(null);
if (r==JFileChooser.APPROVE_OPTION)
{
jtfb.setText(fc.getSelectedFile().getPath());
jbc.setEnabled(true);
}
}
}
);
JLabel jl=new JLabel("");
jbc=new JButton("建立索引");
jbc.addActionListener(
new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
LuceneIndexderTool.index(jtfa.getText(),jtfb.getText());
}
catch (Exception ee)
{
ee.printStackTrace();
jbc.setEnabled(true);
JOptionPane.showMessageDialog(null,"索引创建失败！");
System.out.println(ee.getMessage());
}
}
}
);
jpup.add(jtfa);
jpup.add(jba);
jpup.add(jtfb);
jpup.add(jbb);
jpup.add(jl);
jpup.add(jbc);
jta=new JTextArea(10,60);
JScrollPane jsp=new JScrollPane(jta);
con.add(jpup,BorderLayout.NORTH);
con.add(jsp,BorderLayout.CENTER);
frame.setSize(200,100);
frame.pack();
frame.setVisible(true);
}
//主函数用来总体控制
public static void main(String[] args) {
SwingUtilities.invokeLater(
new Runnable()
{
public void run()
{
try
{
new LucenceIndexer().creatAndShowGUI();
}
catch (Exception e)
{
JOptionPane.showMessageDialog(null, "程序加载失败！");
}
}
}
);
}
//使用内部类LuceneIndexderTool来实现索引工作，
//这样，就可以把索引建立的情况反映在文本框里面了
static class LuceneIndexderTool
{
//创建索引--被索引文件的路径，索引的路径
public static void index(String filePath,String indexPath) throws IOException
{
//建立索引器
IndexWriter writer=new IndexWriter(indexPath,new StandardAnalyzer());
//递归遍历文件目录 来创建索引
String s[]=FileList.getFiles(filePath);
for (int i=0;i<s.length;i++)
{
File f=new File(s[i]);
String ext=getExt(f);
if (ext.equalsIgnoreCase("htm")||ext.equalsIgnoreCase("html"))
{
Document doc=new Document();
//filename 字段
String filename=f.getName();
Field field=new Field("filename",filename,Field.Store.YES,Field.Index.TOKENIZED);
doc.add(field);
//uri字段
String uri=f.getName();
field=new Field("uri",uri,Field.Store.YES,Field.Index.NO);
doc.add(field);
//cdate字段
Date dt=new Date(f.lastModified());
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd E");
String cdate=sdf.format(dt);
field=new Field(" cdate", cdate,Field.Store.YES,Field.Index.NO);
doc.add(field);
//size 字段
double si=f.length();
String size="";
if (si>1024)
{
size=String.valueOf(Math.floor(si/1024))+"k";
}
else
{
size=String.valueOf(si)+"Bytes";
}
field=new Field("size",size,Field.Store.YES,Field.Index.NO);
doc.add(field);
//text字段
String text=FileText.getText(f);
field=new Field(" text", text,Field.Store.COMPRESS,Field.Index.TOKENIZED);
doc.add( field);
//digest字段
String digest="";
if (text.length()>200)
{
digest=text.substring(0,200);
}
else
{
digest=text;
}
field=new Field("digest",digest,Field.Store.YES,Field.Index.TOKENIZED);
doc.add( field);
writer.addDocument(doc);
jta.setText(jta.getText()+"已经导入索引： "+f+"\n");
}
}
writer.close();
JOptionPane.showMessageDialog(null, "索引建立完毕","乐乐提示",JOptionPane.INFORMATION_MESSAGE);
}
private static String getExt(File f) {
// TODO Auto-generated method stub
String s=f.getName();
try
{
s=s.substring(s.lastIndexOf(".")+1);
}
catch(Exception e)
{
s="";
}
return s;
}
}
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