Java生成Excel文件（xls格式）

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Calendar;
import java.util.Date;
import jxl.Workbook;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.write.Boolean;
import jxl.write.DateFormats;
import jxl.write.DateTime;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;

public class BuildExcel {
    public void createExcel(OutputStream os) throws WriteException,IOException {
        //创建工作薄
        WritableWorkbook workbook = Workbook.createWorkbook(os);
        //创建新的一页  ---sheet页命名 ； sheet页号
        WritableSheet sheet = workbook.createSheet("First Sheet", 0);
        //构造表头
        sheet.mergeCells(0, 0, 4, 0);//添加合并单元格，第一个参数是起始列，第二个参数是起始行，第三个参数是终止列，第四个参数是终止行
        WritableFont bold = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//设置字体种类和黑体显示,字体为Arial,字号大小为10,采用黑体显示
        WritableCellFormat titleFormate = new WritableCellFormat(bold);//生成一个单元格样式控制对象
        titleFormate.setAlignment(jxl.format.Alignment.CENTRE);//单元格中的内容水平方向居中
        titleFormate.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//单元格的内容垂直方向居中
        Label title = new Label(0,0,"JExcelApi支持数据类型详细说明",titleFormate);
        sheet.setRowView(0, 600, false);//设置第一行的高度
        sheet.addCell(title);
        
        //创建要显示的具体内容
        WritableFont color = new WritableFont(WritableFont.ARIAL);//选择字体
        color.setColour(Colour.GOLD);//设置字体颜色为金黄色
        WritableCellFormat colorFormat = new WritableCellFormat(color);
        Label formate = new Label(0,1,"数据格式",colorFormat);
        sheet.addCell(formate);
        Label floats = new Label(1,1,"浮点型");
        sheet.addCell(floats);
        Label integers = new Label(2,1,"整型");
        sheet.addCell(integers);
        Label booleans = new Label(3,1,"布尔型");
        sheet.addCell(booleans);
        Label dates = new Label(4,1,"日期格式");
        sheet.addCell(dates);
        WritableFont color1 = new WritableFont(WritableFont.TIMES);//选择字体
        color1.setColour(Colour.BLUE2);
        WritableCellFormat colorFormat1 = new WritableCellFormat(color1);
        Label test = new Label(5, 1, "Demo", colorFormat1);
        sheet.addCell(test);
        
        Label example = new Label(0,2,"数据示例",colorFormat);
        sheet.addCell(example);
        //浮点数据
        //设置下划线
        WritableFont underline= new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.NO_BOLD,false,UnderlineStyle.SINGLE);
        WritableCellFormat greyBackground = new WritableCellFormat(underline);
        greyBackground.setBackground(Colour.GRAY_25);//设置背景颜色为灰色
        Number number = new Number(1,2,3.1415926535,greyBackground); // 参数 ： 列 ， 行，值，颜色
        sheet.addCell(number);
        
        
        //整形数据
        WritableFont boldNumber = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);//黑体
        WritableCellFormat boldNumberFormate = new WritableCellFormat(boldNumber);
        Number ints = new Number(2,2,15042699,boldNumberFormate);
        sheet.addCell(ints);
        
        
        //布尔型数据
        Boolean bools = new Boolean(3,2,true);
        sheet.addCell(bools);
        
        
        //日期型数据
        //设置黑体和下划线
        WritableFont boldDate = new WritableFont(WritableFont.ARIAL,WritableFont.DEFAULT_POINT_SIZE,WritableFont.BOLD,false,UnderlineStyle.SINGLE);
        WritableCellFormat boldDateFormate = new WritableCellFormat(boldDate,DateFormats.FORMAT1);
        Calendar c = Calendar.getInstance();
        Date date = c.getTime();
        DateTime dt = new DateTime(4,2,date,boldDateFormate);
        sheet.addCell(dt);
        
        //Demo
        Label demo = new Label(5,2, "demo");
        sheet.addCell(demo);
        //把创建的内容写入到输出流中，并关闭输出流
        workbook.write();
        workbook.close();
        os.close();
        System.out.println("创建完成！");
    }
    public static void main(String[] args) throws FileNotFoundException {
    	String filePatch = "D:/CreateFile/BuilExcel.xls";
    	File file = new File(filePatch);
    	if (!file.setReadable(true) || !file.setWritable(true)) {
    		System.out.println("文件没有读写权限！");
		}
		OutputStream stream = new FileOutputStream(file);
		BuildExcel buildExcel = new BuildExcel();
		try {
			buildExcel.createExcel(stream);
		} catch (IOException | WriteException e) {
			e.printStackTrace();
		}
	}
}