用java语言展示Excel文件内容

1、需要借助包来获取表中的行列、单元格等

2、把需要用到的包导入到工程项目里面(注意:如果用的是jxl.jar包，当读取后缀名为.xlsx时会报出Unable to recognize OLE stream的错误，本人用的就是这个包，所以只局限于读取后缀名为.xls的Excel)

3、代码如下:

1)、界面的设置

/**
 * @author
 * @vision createtime:2016下午8:10:59
 */
package ReadExcelSurface;

import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;

import ReadExcelControl.ButtonListener;
import ReadExceluntil.ReadMath;

/**
 * @author Administrator
 *
 */
public class ReadExcel extends JFrame {
	public static void main(String[] args) {
		new ReadExcel().initExcel();
	}

	private void initExcel() {
		try {
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
		} catch (Exception e) {
			e.printStackTrace();
		}
		this.setSize(ReadMath.width, ReadMath.height);
		this.setLocationRelativeTo(null);
		this.setDefaultCloseOperation(3);
		this.setUndecorated(true);
		this.assembly();
		this.setVisible(true);
		this.addMouseListener(mouse);
		this.addMouseMotionListener(mouse);
		// this.setExtendedState(Frame.ICONIFIED);
	}

	// 添加组件
	private void assembly() {
		JPanel panel = new JPanel() {
			@Override
			protected void paintComponent(Graphics g) {
				super.paintComponent(g);
				g.drawImage(new ImageIcon(loadImage("BallBackground.jpg"))
						.getImage(), 0, 0, this.getWidth(), this.getHeight(),
						null);
			}
		};
		panel.setLayout(null);
		this.add(panel);

		JLabel label1 = new JLabel(new ImageIcon(loadImage("缩小.png")));
		JLabel label2 = new JLabel(new ImageIcon(loadImage("关闭按钮2.png")));
		label1.setBounds(this.getWidth() - 80, 5, 30, 30);
		label2.setBounds(this.getWidth() - 40, 5, 30, 30);

		JLabel labelContent = new JLabel();
		labelContent.setFont(new Font("楷体", 1, 16));
		labelContent.setForeground(Color.BLUE);
		labelContent
				.setText("版本提示(version):由于此项目只针对于Microsoft Office进行操作，所以只能读取Excel表(后缀名为xls)，谢谢使用!");
		labelContent.setBounds(ReadMath.width - 550, 50, 500, 40);

		panel.add(labelContent);
		panel.add(label2);
		panel.add(label1);
		MouseAdapter ma = new MouseAdapter() {
			@Override
			public void mouseReleased(MouseEvent e) {
				super.mouseReleased(e);
				ReadExcel.this.setExtendedState(Frame.ICONIFIED);
			}
		};
		MouseAdapter adapter = new MouseAdapter() {
			@Override
			public void mouseReleased(MouseEvent e) {
				super.mouseReleased(e);
				System.exit(0);
			}
		};
		label1.addMouseListener(ma);
		label2.addMouseListener(adapter);

		// 主组件
		JTextField jtf = new JTextField();
		JButton button1 = new JButton("请选择文件");
		JButton button2 = new JButton("搜索文件内容");
		jtf.setOpaque(false);
		// jtf.setBorder(null);
		jtf.setFont(new Font("宋体", 0, 20));

		jtf.setBounds(ReadMath.width - 550, 100, 350, 35);
		button1.setBounds(ReadMath.width - 180, 100, 105, 35);
		button2.setBounds(ReadMath.width - 180, 140, 105, 35);

		panel.add(jtf);
		panel.add(button1);
		panel.add(button2);
		ButtonListener bl = new ButtonListener(panel, jtf);
		button1.addActionListener(bl);
		button2.addActionListener(bl);
	}

	MouseAdapter mouse = new MouseAdapter() {
		int pressx, pressy;

		public void mousePressed(java.awt.event.MouseEvent e) {
			pressx = e.getX();
			pressy = e.getY();
		};

		public void mouseDragged(java.awt.event.MouseEvent e) {
			int x1 = e.getXOnScreen();
			int y1 = e.getYOnScreen();
			ReadExcel.this.setLocation(x1 - pressx, y1 - pressy);
		};
	};
	
	private URL loadImage(String imgPath) {
		return Thread.currentThread().getContextClassLoader().getResource(imgPath);
	}
}

2)、监听器的设置

/**
 * @author
 * @vision createtime:2016上午11:30:03
 */
package ReadExcelControl;

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;

import ReadExceluntil.ReadMath;

/**
 * @author Administrator
 *
 */
public class ButtonListener implements ActionListener{
	private JTextField jtf;
	private JPanel panel;
	public int row;
	public int column;
	public ButtonListener(JPanel panel,JTextField jtf) {
		this.panel = panel;
		this.jtf = jtf;
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		String command = e.getActionCommand();
		if("请选择文件".equals(command)){
			JFileChooser jfc = new JFileChooser();
			jfc.showOpenDialog(null);
			File file =  jfc.getSelectedFile();
			if(jfc.getSelectedFile()!=null){
				jtf.setText(file.getAbsolutePath());
			}        
		} else if("搜索文件内容".equals(command)){
			SelectExcel select = new SelectExcel();
			if(jtf.getText()!=null&&jtf.getText().endsWith(".xls")){
				Object[][] data = select.getContent(jtf.getText());
				if(data!=null && data.length > 0) {
					// 定义队列，用于存储列名
					ArrayList