JTable显示JTextFiled搜索结果

Question

我有一个JTextFiled和JTable从文本文件中读取数据.

我想在我的JTextFiled中添加一个keyListener,当输入一个数字时,程序应该搜索我的文本文件,并在我的JTable上显示以该数字开头的行.

我的文字档案:

26     thired     62     Yes
29     sixth     92     No
35     vff     53     No
33     oll     36     No
38     koole     86     No

例如,当我在textfield中写"3"时,我的JTable应该自己显示这三行:

35     vff     53     No
33     oll     36     No
38     koole     86     No

我的代码:

public class BookPage extends JFrame implements KeyListener{

private AllBooks bookModel;
private JTable bTabel;
JTextField tf1;


public BookPage(){
    bookModel=new AllBooks();
    bTabel=new JTable(bookModel);

    tf1=new JTextField(20);
    tf1.addKeyListener(this);

    JPanel panel= new JPanel();
    JScrollPane scroolpane=new JScrollPane(bTabel);
    panel.add(tf1);
    panel.add(scroolpane);
    this.setContentPane(panel);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    this.setBounds(300, 60, 800, 600);
    this.setVisible(true);
}


public static void main(String[] args){
    new BookPage().setVisible(true);
}

@Override
public void keyTyped(KeyEvent e) {
    String line=tf1.getText().trim();
    SearchBook(line);

}

@Override
public void keyPressed(KeyEvent e) {
    throw new UnsupportedOperationException("Not supported yet.");
}

@Override
public void keyReleased(KeyEvent e) {
    throw new UnsupportedOperationException("Not supported yet.");
}

public void SearchBook(String Bid){
    File f=new File("AllBookRecords.txt");
    try{
        FileReader Bfr=new FileReader(f);
        BufferedReader Bbr=new BufferedReader(Bfr);
        String bs;
        while( (bs=Bbr.readLine()) != null ){
            String[] Ust=bs.split("     ");
            String id=Ust[0];
            String Bname=Ust[1];
            String Bdate=Ust[2];
            String borrowS=Ust[3];
            if(id.equals(Bid.trim())){
               bTabel.setValueAt(Bname, 10, 1);
            }
        }
    }
    catch (IOException ex) {

    }
}
}

第二类:

public class AllBooks extends AbstractTableModel{
BookInformation Binfos1=new BookInformation();

String[] Bcol=new String[]{"Id","Name","Date","Borrow Status"};
ArrayList<BookInformation> Bdata=new ArrayList<BookInformation>();

public AllBooks(){
    try{
        FileReader fr=new FileReader("AllBookRecords.txt");
        BufferedReader br=new BufferedReader(fr);
        String line;

        while( (line=br.readLine()) != null){
            Bdata.add(initializeBookInfos(line));
        }
        br.close();
    }
    catch(IOException ioe){

    }
}

public static BookInformation initializeBookInfos(String myLine){
    BookInformation Binit=new BookInformation();
    String[] bookCellArray=myLine.split("     ");
    Binit.setBookID(bookCellArray[0]);
    Binit.setBookName(bookCellArray[1]);
    Binit.setBookDate(bookCellArray[2]);
    Binit.setBorrowStatus(bookCellArray[3]);
    return Binit;
}
public void RemoveMyRow(int row){
    if(RemoveBookFromFile(row)){
       Bdata.remove(row);
      fireTableRowsDeleted(row, row);
    }
}

public boolean RemoveBookFromFile(int index){

    File Mf=new File("AllBookRecords.txt");
    File Tf=new File("Boutput.txt");
    try{
        BufferedReader Ubr=new BufferedReader(new FileReader(Mf));
        PrintWriter Bpw=new PrintWriter(new FileWriter(Tf));
        String line;
        while( (line=Ubr.readLine()) != null ){
            if(line.trim().length() == 0){
                continue;
            }
            if(!line.startsWith(String.valueOf(getValueAt(index, 0)))){
                Bpw.println(line);
            }
        }
        Bpw.close();
        Ubr.close();
        Mf.delete();
        Tf.renameTo(Mf);
        return true;
    } catch(FileNotFoundException e1){
        return false;
    }
    catch(IOException ioe){
          return false;
    }
}

public void AddRow(BookInformation bookinfo){
    if(WriteBooktofile(bookinfo.toString())){
        Bdata.add(bookinfo);
        fireTableRowsInserted(Bdata.size()-1, Bdata.size()-1);
    }
    else{
        JOptionPane.showMessageDialog(null, "Unable Add To File"+bookinfo.getBookName());
    }
}

public boolean WriteBooktofile(String bookc){
    try{
        File f=new File("AllBookRecords.txt");

            FileWriter fw=new FileWriter(f.getAbsoluteFile(), true);
            BufferedWriter bw=new BufferedWriter(fw);
            bw.write(bookc);
            bw.close();
            return true;
    }
    catch(Exception e){
        return false;
    }
}

@Override
public String getColumnName(int col){
    return Bcol[col];
}

@Override
public int getRowCount() {
    if(Bdata !=null){
    return Bdata.size();
    }
    else{
        return 0;
    }
}

@Override
public int getColumnCount() {
    return Bcol.length;
}

@Override
public Object getValueAt(int rowIndex, int columnIndex) {
    BookInformation binfo=Bdata.get(rowIndex);
    Object value;

    switch(columnIndex){

        case 0:
            value=binfo.getBookID();
            break;
        case 1:
            value=binfo.getBookName();
            break;
        case 2:
            value=binfo.getBookDate();
            break;
        case 3:
            value=binfo.getBorrowStatus();
            break;
        default :
            value="...";  
    }
    return value;
}
}

第二类:

public class BookInformation {

private String BookName;
private String BookDate;
private String BookID;
private String BorrowStatus;

public String getBookName() {
    return BookName;
}

public void setBookName(String book_name) {
    this.BookName = book_name;
}

public String getBookDate() {
    return BookDate;
}


public void setBookDate(String book_date) {
    this.BookDate = book_date;
}


public String getBookID() {
    return BookID;
}

public void setBookID(String Book_id) {
    this.BookID = Book_id;
}

@Override
public String toString(){
    return BookID + "     " + BookName+ "     "
            + BookDate +"     "+ BorrowStatus + "\n";
}

public String getBorrowStatus() {
    return BorrowStatus;
}


public void setBorrowStatus(String borrowStat) {
    BorrowStatus = borrowStat;
}

}

感谢帮助.

Answer 1

将所有数据加载到JTable中.然后使用表过滤功能仅显示所需的行.该TableFilterDemo从排序和过滤的Swing指南的部分是一个工作的例子,做到这一点.