java 读取xls表格然后实现上一页和下一页 （写了出来但是不能用，不知道为什么，封装另外的类中）

Question

package shizi;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import javax.swing.*;

import javazoom.jl.player.advanced.jlap;

import jxl.Sheet;

import jxl.Workbook;

public class Xue_1 extends JFrame implements ActionListener{

JButton x1=new JButton("上一个");

JButton x2=new JButton("下一个");

JButton r1=new JButton("返回主菜单");

JButton r2=new JButton("切换音乐");

JButton r3=new JButton("切换背景");

JButton r4=new JButton("静音模式");

JLabel bj2=new JLabel(new ImageIcon("image/215452.jpg"));

Xinxi[] xinxis;

JLabel h1=new JLabel("字");

JLabel h2=new JLabel("组词");

JLabel h3=new JLabel("造句");

JLabel h4=new JLabel("拼音");

JLabel h5=new JLabel("喇叭");

Font font1=new Font("楷体",Font.BOLD,90);

Font font2=new Font("微软雅黑",Font.BOLD,30);

int n;

public Xue_1(){

Container c=this.getContentPane();

c.setLayout(null);

xinxis=this.getXinxis();

h1.setBounds(270,50, 100,100);

h4.setBounds(100,200, 300,70);

h2.setBounds(100,260, 300,70);

h3.setBounds(100,320, 300,70);

h5.setBounds(410,150, 50,50);

h1.setFont(font1);

h2.setFont(font2);

h3.setFont(font2);

h4.setFont(font2);

bj2.setBounds(0,0,500,600);

x1.setBounds(100, 520, 100, 40);

x2.setBounds(300, 520, 100, 40);

r1.setBounds(0, 0, 100, 30);

r2.setBounds(0, 30, 100, 30);

r3.setBounds(0, 60, 100, 30);

r4.setBounds(0, 90, 100, 30);

x1.addActionListener(this);

x2.addActionListener(this);

r1.addActionListener(this);

r2.addActionListener(this);

r3.addActionListener(this);

r4.addActionListener(this);

c.add(h1);

c.add(h2);

c.add(h3);

c.add(h4);

c.add(h5);

c.add(r1);

c.add(r2);

c.add(r3);

c.add(r4);

c.add(x1);

c.add(x2);

c.add(bj2);

this.showXinxi(xinxis[0]);

this.setTitle("识字板块");

this.setSize(500, 600);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

this.setVisible(true);

}

public static void main(String[] args) {

Xue_1 xue=new Xue_1();

}

@Override

public void actionPerformed(ActionEvent e) {

this.getXinxis();

// TODO Auto-generated method stub

if(e.getSource()==x1){

n--;

if(n<0){

n++;

JOptionPane.showMessageDialog(null, "亲！已经到第一页了！");

}

}else if(e.getSource()==x2){

n++;

if(n>40){

n--;

JOptionPane.showMessageDialog(null, "亲！已经学完了，快去做练习游戏吧！");

}

}else if(e.getSource()==r1){

Jiemian_1 jm=new Jiemian_1();

}else if(e.getSource()==r2){

}else if(e.getSource()==r3){

}else if(e.getSource()==r4){

}

}

public Xinxi[] getXinxis(){

Xinxi[] xinxis=null;

try{ File file=new File("file/1.xls");

Workbook workbook=Workbook.getWorkbook(file);

Sheet sheet=workbook.getSheet(0);

int rows=sheet.getRows();

int columns=sheet.getColumns();

xinxis=new Xinxi[rows];

Xinxi xx=new Xinxi();

System.out.println("n="+n);

xx.setZi(sheet.getCell(0,0+n).getContents());

xx.setCi(sheet.getCell(1,0+n).getContents());

xx.setJu(sheet.getCell(2,0+n).getContents());

xx.setPinyin(sheet.getCell(3,0+n).getContents());

xx.setYuyin(sheet.getCell(4,0+n).getContents());

xinxis[n]=xx;

workbook.close();

}catch(Exception ex){

ex.printStackTrace();

}

return xinxis;

}

public void showXinxi(Xinxi xinxi){

h1.setText(xinxi.getZi());

h2.setText(xinxi.getCi());

h3.setText(xinxi.getJu());

h4.setText(xinxi.getPinyin());

h5.setText(xinxi.getYuyin());

}

}

Answer 1

你的jar包和类的代码没给全，自己单步调试下吧