java做的简易记事本含快捷键查找替换等

这是一个简易记事本，仿制windows记事本的，包括文件（新建，打开，保存，另存为，退出），编辑（查找，替换），格式（换行，字体颜色），帮助，在文本框点击鼠标右键，显示撤销，复制，剪切，粘贴，全选等功能，另外还添加了部分快捷键功能，由于做的功能不全，可能会有些缺点，请大家批评指正package lwz;import java.awt.Button;import java.awt.Color;import ponent;import java.awt.Dialog;import java.awt.Event;import java.awt.Font;import java.awt.Frame;import java.awt.GraphicsEnvironment;import bel;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.KeyEvent;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.awt.event.WindowListener;import java.io.File;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JCheckBox;import javax.swing.JColorChooser;import javax.swing.JComboBox;import javax.swing.JFileChooser;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JMenu;import javax.swing.JMenuBar;import javax.swing.JMenuItem;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.JPopupMenu;import javax.swing.JScrollPane;import javax.swing.JTextArea;import javax.swing.JTextField;import javax.swing.KeyStroke;import javax.swing.SwingUtilities;import javax.swing.UIManager;import javax.swing.WindowConstants;import javax.swing.undo.UndoManager;import lwz2.FontSlectDemo;import youts.Bilateral; import youts.Constraints; import youts.GroupLayout;//VS4E -- DO NOT REMOVE THIS LINE!public class 记事本 extends JFrame {private static final long serialVersionUID = 1L;private JMenuItem jMenuItem0;private JMenuItem jMenuItem1;private JMenuItem jMenuItem2;private JMenuItem jMenuItem3;private JMenuItem jMenuItem4;private JMenu jMenu0;private JMenuItem jMenuItem5;private JMenuItem jMenuItem6;private JMenuItem jMenuItem7;private JMenuItem jMenuItem8;private JMenuItem jMenuItem9;private JMenuItem jMenuItem10;private JMenuItem jMenuItem11;private JMenu jMenu1;private JMenuItem jMenuItem12;private JMenuItem jMenuItem13;private JMenu jMenu2;private JMenuItem jMenuItem14;private JMenu jMenu3;private JMenuBar jMenuBar0;private JTextArea jTextArea0;private JScrollPane jScrollPane0;private static final String PREFERRED_LOOK_AND_FEEL = "javax.swing.plaf.metal.MetalLookAndFeel";private static boolean flag = false; // 判断是否保存JTextField findtxt,findtxt1,repltxt; //find为查找对话框的输入文本区，replace对话框的输入文本区Dialog find,replace,typeface; //find为查找对话框，replace对话框String str,strnext,fname=null,path;int startp,endp,nexttemp,newstartp,newendp;private JPopupMenu text=new JPopupMenu();JButton replb=new JButton();JFrame frame=new JFrame();UndoManager um = new UndoManager();File newfiles;JFileChooser choose = new JFileChooser(); //文件对话框public 记事本() {initComponents();text.add(jMenuItem5);text.add(jMenuItem6);text.add(jMenuItem7);text.add(jMenuItem8);text.add(jMenuItem9);jTextArea0.add(text);//注册监听jTextArea0.getDocument().addUndoableEditListener(um);NewListener n = new NewListener();jMenuItem0.addActionListener(n);ImageIcon newfile = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/snew.gif");//添加按钮图标jMenuItem0.setIcon(newfile);KeyStrokekeynew=KeyStroke.getKeyStroke(KeyEvent.VK_N,Event.CTRL_MASK); //定义快捷键 jMenuItem0.setAccelerator(keynew);OpenListener o=new OpenListener();jMenuItem1.addActionListener(o);ImageIcon openfile = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/sopen.GIF");jMenuItem1.setIcon(openfile);KeyStrokekeyopen=KeyStroke.getKeyStroke(KeyEvent.VK_O,Event.CTRL_MASK); //定义快捷键 jMenuItem1.setAccelerator(keyopen);SaveListener s = new SaveListener();jMenuItem2.addActionListener(s);ImageIcon savea = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/ssave.gif");jMenuItem2.setIcon(savea);KeyStrokekeysave=KeyStroke.getKeyStroke(KeyEvent.VK_S,Event.CTRL_MASK); //定义快捷键 jMenuItem2.setAccelerator(keysave);SaveToListener s1 = new SaveToListener();jMenuItem3.addActionListener(s1);ImageIcon saveb = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/ssave.gif");jMenuItem3.setIcon(saveb);KeyStrokekeysave1=KeyStroke.getKeyStroke(KeyEvent.VK_A,Event.CTRL_MASK); //定义快捷键 jMenuItem3.setAccelerator(keysave1);ExitListener e = new ExitListener();jMenuItem4.addActionListener(e);ImageIcon exit = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/sexit.gif");jMenuItem4.setIcon(exit);KeyStrokekeyexit=KeyStroke.getKeyStroke(KeyEvent.VK_X,Event.CTRL_MASK); //定义快捷键 jMenuItem4.setAccelerator(keyexit);RevokeListener r=new RevokeListener();jMenuItem5.addActionListener(r);KeyStrokekeyrevoke=KeyStroke.getKeyStroke(KeyEvent.VK_Z,Event.CTRL_MASK); //定义快捷键jMenuItem5.setAccelerator(keyrevoke);CutListener c = new CutListener();jMenuItem6.addActionListener(c);ImageIcon cut = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/scut.gif");jMenuItem6.setIcon(cut);KeyStrokekeycut=KeyStroke.getKeyStroke(KeyEvent.VK_X,Event.CTRL_MASK);jMenuItem6.setAccelerator(keycut);CopyListener c1 = new CopyListener();jMenuItem7.addActionListener(c1);ImageIcon copy = new ImageIcon("images/scopy.gif");jMenuItem7.setIcon(copy);KeyStrokekeycopy=KeyStroke.getKeyStroke(KeyEvent.VK_C,Event.CTRL_MASK);jMenuItem7.setAccelerator(keycopy);PasteListener p = new PasteListener();jMenuItem8.addActionListener(p);ImageIcon paste = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/spaste.gif");jMenuItem8.setIcon(paste);KeyStrokekeypaste=KeyStroke.getKeyStroke(KeyEvent.VK_V,Event.CTRL_MASK);jMenuItem8.setAccelerator(keypaste);SelectAllListener s2=new SelectAllListener();jMenuItem9.addActionListener(s2);KeyStrokekeyselectall=KeyStroke.getKeyStroke(KeyEvent.VK_A,Event.CTRL_MASK);jMenuItem9.setAccelerator(keyselectall);ReplacementListener r1=new ReplacementListener();jMenuItem10.addActionListener(r1);KeyStrokekeyreplace=KeyStroke.getKeyStroke(KeyEvent.VK_H,Event.CTRL_MASK);jMenuItem10.setAccelerator(keyreplace);SearchListener s3=new SearchListener();jMenuItem11.addActionListener(s3);KeyStrokekeysearch=KeyStroke.getKeyStroke(KeyEvent.VK_F,Event.CTRL_MASK);jMenuItem11.setAccelerator(keysearch);WrapListener w=new WrapListener();jMenuItem12.addActionListener(w);TypefaceListener t=new TypefaceListener();jMenuItem13.addActionListener(t);AboutListener a=new AboutListener();jMenuItem14.addActionListener(a);ImageIcon about = new ImageIcon("C:/Documents and Settings/user/桌面/Myjava4/images/sabout.gif");jMenuItem14.setIcon(about);jTextArea0.addMouseListener(new handlemouse(this));//注册鼠标右击事件jTextArea0.setFont(new Font("宋体",Font.PLAIN,30));}//处理右键弹出菜单类class handlemouse extends MouseAdapter{记事本 note;handlemouse(记事本 note1){note=note1;}public void mouseReleased(MouseEvent n){if(n.isPopupTrigger())note.text.show((Component)n.getSource(),n.getX(),n.getY());}}//撤销private class RevokeListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjMenuItem4.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z, ActionEvent.CTRL_MASK ));if (um.canUndo()) {um.undo();}}}//字体private class TypefaceListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// new 字体();JColorChooser jColor=new JColorChooser(); //调用颜色面板，设置前景就可更改字体颜色Color fcolor=jTextArea0.getForeground();jTextArea0.setForeground( jColor.showDialog(jTextArea0,"选择字体颜色",fcolor));}}//换行private class WrapListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.setLineWrap(true);//激活自动换行功能jTextArea0.setWrapStyleWord(true);//激活断行不断字功能jMenuItem12.setEnabled(false);}}//查找class SearchListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub// 创建查找对话框;find=new Dialog(frame, "查找");JPanel p1=new JPanel();JPanel p2=new JPanel();findtxt1=new JTextField(7);JButton findenter=new JButton("查找");JButton find1=new JButton("查找下一个");JButton Quxiao=new JButton("取消");p1.add(new JLabel("输入要查找字符:"));p1.add(findtxt1);p2.add(findenter);p2.add(find1);p2.add(Quxiao);FindListener f=new FindListener();findenter.addActionListener(f);FindNextListener f1=new FindNextListener();find1.addActionListener(f1);// KeyStroke keyfind=KeyStroke.getKeyStroke(KeyEvent.VK_F3,0);// find1.setAccelerator(keyfind);QuxiaoListener q=new QuxiaoListener();Quxiao.addActionListener(q);find.add("Center",p1);find.add("South",p2);find.setSize(300,200);find.show();}}//查找下一个private class FindNextListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(findtxt1.getText().equals("")){ JOptionPane.showMessageDialog(jMenu0, "请输入要查找的内容");}else if(!findtxt1.getText().equals("")){nexttemp=newendp; /////获取上次查找的终点做为未查找字符串的起点String strall=jTextArea0.getText();jTextArea0.select(nexttemp,strall.length()); /////选中所有未查找的字符串strnext=jTextArea0.getSelectedText();newstartp=strnext.indexOf(findtxt1.getText())+nexttemp;/////在未查找的字符串里搜索对应字符的在TXT1中的位置newendp=newstartp+findtxt1.getText().length();jTextArea0.select(newstartp,newendp); ////找到相应文本，并选择notfindmethod1();}}}//取消private class QuxiaoListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubfind.dispose();}}//查找private class FindListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(findtxt1.getText().equals("")){ JOptionPane.showMessageDialog(jMenu0, "请输入要查找的内容");}else if(!findtxt1.getText().equals("")){// JOptionPane.showMessageDialog(jMenu1, "正在查找");str=jTextArea0.getText();startp=str.indexOf(findtxt1.getText());endp=startp+findtxt1.getText().length();jTextArea0.select(startp,endp);newendp=endp;////////获取这次查找的终点notfindmethod1();}}}//替换class ReplacementListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubreplace=new Dialog(frame, "替换"); // 创建替换对话框;JButton replb=new JButton("替换");JButton tihuan=new JButton("替换下一个");JButton quxiao1=new JButton("取消");JPanel p1=new JPanel();JPanel p2=new JPanel();JPanel p3=new JPanel();findtxt=new JTextField(7);repltxt=new JTextField(7);p1.add(new JLabel("输入原始字符:"));p1.add(findtxt);p2.add(new JLabel("输入替换字符:"));p2.add(repltxt);p3.add(replb);p3.add(tihuan);p3.add(quxiao1);ReplaceListener r=new ReplaceListener();replb.addActionListener(r);TiHuanListener t=new TiHuanListener();tihuan.addActionListener(t);Quxiao1Listener q1=new Quxiao1Listener();quxiao1.addActionListener(q1);replace.add("North",p1);replace.add("Center",p2);replace.add("South",p3);replace.setSize(300,200);replace.show();}}//替换private class ReplaceListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stub//replace.dispose();if(findtxt.getText().equals("")||repltxt.getText().equals("")){ JOptionPane.showMessageDialog(jMenu0, "请输入要查找或替换的内容");}elseif(!findtxt.getText().equals("")&&!repltxt.getText().equals("")){str=jTextArea0.getText();startp=str.indexOf(findtxt.getText());endp=startp+findtxt.getText().length();jTextArea0.replaceRange(repltxt.getText(),startp,endp);newendp=endp; //获取这次替换的终点}}}//替换下一个private class TiHuanListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubnexttemp=newendp; /////获取上次查找的终点做为未查找字符串的起点String strall=jTextArea0.getText();jTextArea0.select(nexttemp,strall.length()); /////选中所有未查找的字符串strnext=jTextArea0.getSelectedText();newstartp=strnext.indexOf(findtxt.getText())+nexttemp;/////在未查找的字符串里搜索对应字符的在jTextArea0中的位置newendp=newstartp+findtxt.getText().length();jTextArea0.select(newstartp,newendp);if(!jTextArea0.getSelectedText().equals(findtxt.getText())){jTextArea0.setCaretPosition(0); //光标返回文件头部JOptionPane.showMessageDialog(null,"查找不到对应的字符！","查找错误",JOptionPane.ERROR_MESSAGE);}else{jTextArea0.replaceRange(repltxt.getText(),newstartp,newendp);//替换字符}}}//取消private class Quxiao1Listener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubreplace.dispose();}}//全选private class SelectAllListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.selectAll();}}//新建private class NewListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.setText("");}}//打开private class OpenListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.setText("");JFileChooser fileChooser = new JFileChooser();int r = fileChooser.showOpenDialog(frame);if (r == JFileChooser.APPROVE_OPTION) {try {File file = fileChooser.getSelectedFile();FileReader fr = new FileReader(file);char[] buf = new char[1024];int len = 0;while ((len = fr.read(buf)) != -1) {jTextArea0.append(new String(buf, 0, len));}fr.close();} catch (IOException e1) {e1.printStackTrace();}}}}//保存private class SaveListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif(fname==null) //如果文件名为空，说明文件未被创建，弹出另存为对话框{ othersave(); }try {File savefile=new File(path);savefile.createNewFile();FileWriter fw=new FileWriter(savefile);fw.write(jTextArea0.getText());fw.close();}catch(IOException e1){}}}//另存为private class SaveToListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubothersave();}}//另存为方法public void othersave(){if(choose.APPROVE_OPTION==choose.showSaveDialog(frame)){path=choose.getSelectedFile().getPath();newfiles=new File(path);//state.setText("JAVA记事本------"+path);fname=choose.getSelectedFile().getName();;try {newfiles=new File(path);newfiles.createNewFile();FileWriter fw=new FileWriter(newfiles);fw.write(jTextArea0.getText());fw.close();}catch(IOException e){}}}//退出private class ExitListener implements ActionListener{public void actionPerformed(ActionEvent e) {StringBuffer sb = new StringBuffer();try {FileReader fr = new FileReader("未命名文件.txt");char[] buf = new char[1024];int len = 0;while ((len = fr.read(buf)) != -1) {sb.append(new String(buf, 0, len));}fr.close();} catch (Exception e1) {e1.getStackTrace();}String s = sb.toString();if (flag == false || !(jTextArea0.getText().equals(s))) {int r = JOptionPane.showConfirmDialog(frame, "你还没有保存，要保存吗？");if (r == JOptionPane.OK_OPTION) {JFileChooser filechoose = new JFileChooser();int r1 = filechoose.showSaveDialog(frame);if (r1 == JFileChooser.APPROVE_OPTION) {File file = filechoose.getSelectedFile();try {FileWriter writer = new FileWriter(file);writer.write((String) jTextArea0.getText());writer.close();System.exit(0);} catch (IOException e1) {e1.printStackTrace();}} else {}} else if (r == JOptionPane.NO_OPTION) {System.exit(0);} else {}} elseSystem.exit(0);}}//剪切private class CutListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.cut();}}//复制private class CopyListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.copy();}}//粘贴private class PasteListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubjTextArea0.paste();}}//帮助private class AboutListener implements ActionListener{public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubJOptionPane.showMessageDialog(jMenu0, "李红力制作");}}//查找中查找不到的方法notfindmethod1public void notfindmethod1(){if(!jTextArea0.getSelectedText().equals(findtxt1.getText())){ jTextArea0.setCaretPosition(0); //光标返回文件头部JOptionPane.showMessageDialog(null,"查找不到对应的字符！","查找错误",JOptionPane.ERROR_MESSAGE);}}private void initComponents() {setLayout(new GroupLayout());add(getJScrollPane0(), new Constraints(new Bilateral(-1, 0, 22), new Bilateral(-1, 0, 22)));setJMenuBar(getJMenuBar0());setSize(297, 237);}private JScrollPane getJScrollPane0() {if (jScrollPane0 == null) {jScrollPane0 = new JScrollPane();jScrollPane0.setViewportView(getJTextArea0());}return jScrollPane0;}private JTextArea getJTextArea0() { if (jTextArea0 == null) {jTextArea0 = new JTextArea();}return jTextArea0;}private JMenuBar getJMenuBar0() {if (jMenuBar0 == null) {jMenuBar0 = new JMenuBar();jMenuBar0.add(getJMenu0());jMenuBar0.add(getJMenu1());jMenuBar0.add(getJMenu2());jMenuBar0.add(getJMenu3());}return jMenuBar0;}private JMenu getJMenu3() {if (jMenu3 == null) {jMenu3 = new JMenu();jMenu3.setText("帮助");jMenu3.add(getJMenuItem14());}return jMenu3;}private JMenuItem getJMenuItem14() { if (jMenuItem14 == null) {jMenuItem14 = new JMenuItem();jMenuItem14.setText("关于制作");}return jMenuItem14;}private JMenu getJMenu2() {if (jMenu2 == null) {jMenu2 = new JMenu();jMenu2.setText("格式");jMenu2.add(getJMenuItem12());}return jMenu2;}private JMenuItem getJMenuItem13() { if (jMenuItem13 == null) {jMenuItem13 = new JMenuItem();jMenuItem13.setText("字体颜色");}return jMenuItem13;}private JMenuItem getJMenuItem12() { if (jMenuItem12 == null) {jMenuItem12 = new JMenuItem();jMenuItem12.setText("换行");}return jMenuItem12;}private JMenu getJMenu1() {if (jMenu1 == null) {jMenu1 = new JMenu();jMenu1.setText("编辑");jMenu1.add(getJMenuItem5());jMenu1.add(getJMenuItem6());jMenu1.add(getJMenuItem7());jMenu1.add(getJMenuItem8());jMenu1.add(getJMenuItem9());jMenu1.add(getJMenuItem10());jMenu1.add(getJMenuItem11());}return jMenu1;}private JMenuItem getJMenuItem11() { if (jMenuItem11 == null) {jMenuItem11 = new JMenuItem();jMenuItem11.setText("查找");}return jMenuItem11;}if (jMenuItem10 == null) {jMenuItem10 = new JMenuItem();jMenuItem10.setText("替换");}return jMenuItem10;}private JMenuItem getJMenuItem9() { if (jMenuItem9 == null) {jMenuItem9 = new JMenuItem();jMenuItem9.setText("全选");}return jMenuItem9;}private JMenuItem getJMenuItem8() { if (jMenuItem8 == null) {jMenuItem8 = new JMenuItem();jMenuItem8.setText("粘贴");}return jMenuItem8;}private JMenuItem getJMenuItem7() { if (jMenuItem7 == null) {jMenuItem7 = new JMenuItem();jMenuItem7.setText("复制");}return jMenuItem7;}private JMenuItem getJMenuItem6() { if (jMenuItem6 == null) {jMenuItem6 = new JMenuItem();jMenuItem6.setText("剪切 ");}return jMenuItem6;}private JMenuItem getJMenuItem5() { if (jMenuItem5 == null) {jMenuItem5 = new JMenuItem();jMenuItem5.setText("撤销");}return jMenuItem5;}private JMenu getJMenu0() {if (jMenu0 == null) {jMenu0 = new JMenu();jMenu0.setText("文件");jMenu0.add(getJMenuItem0());jMenu0.add(getJMenuItem1());jMenu0.add(getJMenuItem2());jMenu0.add(getJMenuItem3());jMenu0.add(getJMenuItem4());}return jMenu0;}private JMenuItem getJMenuItem4() { if (jMenuItem4 == null) {jMenuItem4 = new JMenuItem();jMenuItem4.setText("退出");}return jMenuItem4;}private JMenuItem getJMenuItem3() { if (jMenuItem3 == null) {jMenuItem3 = new JMenuItem();jMenuItem3.setText("另存为");}return jMenuItem3;}private JMenuItem getJMenuItem2() { if (jMenuItem2 == null) {jMenuItem2 = new JMenuItem();jMenuItem2.setText("保存");}return jMenuItem2;}private JMenuItem getJMenuItem1() { if (jMenuItem1 == null) {jMenuItem1 = new JMenuItem();jMenuItem1.setText("打开");}return jMenuItem1;}private JMenuItem getJMenuItem0() {if (jMenuItem0 == null) {jMenuItem0 = new JMenuItem();jMenuItem0.setText("新建");}return jMenuItem0;}private static void installLnF() {try {String lnfClassname = PREFERRED_LOOK_AND_FEEL;if (lnfClassname == null)lnfClassname = UIManager.getCrossPlatformLookAndFeelClassName();UIManager.setLookAndFeel(lnfClassname);} catch (Exception e) {System.err.println("Cannot install " + PREFERRED_LOOK_AND_FEEL+ " on this platform:" + e.getMessage());}}/*** Main entry of the class.* Note: This class is only created so that you can easily preview the result at runtime.* It is not expected to be managed by the designer.* You can modify it as you like.*/public static void main(String[] args) {installLnF();SwingUtilities.invokeLater(new Runnable() {public void run() {记事本 frame = new 记事本();frame.setDefaultCloseOperation(记事本.EXIT_ON_CLOSE);frame.setTitle("新建_记事本");frame.getContentPane().setPreferredSize(frame.getSize());frame.pack();frame.setSize(500, 600);frame.setLocationRelativeTo(null);frame.setVisible(true);}});}}文件里的功能帮助功能粘贴复制全选登功能放在右键里还有快捷键功能可以自己动手试一下。