//在service层写的，在action直接调用此方法就行了

//导出Excel

public boolean exportExcel(HttpServletResponse response,List list)

{

try

{

OutputStream os = response.getOutputStream();// 取得输出流

response.reset();// 清空输出流

response.setHeader("Content-disposition", "attachment; filename=fine.xls");// 设定输出文件头

response.setContentType("application/msexcel");// 定义输出类型

WritableWorkbook wbook = Workbook.createWorkbook(os); // 建立excel文件

String tmptitle = "财务报表"; // 标题

WritableSheet wsheet = wbook.createSheet(tmptitle, 0); // sheet名称

// 设置excel标题

WritableFont wfont = new WritableFont(WritableFont.ARIAL, 16,WritableFont.BOLD,

false,UnderlineStyle.NO_UNDERLINE,Colour.BLACK);

WritableCellFormat wcfFC = new WritableCellFormat(wfont);

wcfFC.setBackground(Colour.AQUA);

wsheet.addCell(new Label(1, 0, tmptitle, wcfFC));

wfont = new jxl.write.WritableFont(WritableFont.ARIAL, 14,WritableFont.BOLD,

false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);

wcfFC = new WritableCellFormat(wfont);

// 开始生成主体内容

wsheet.addCell(new Label(0, 2, "城市代码"));

wsheet.addCell(new Label(1, 2, "城市名"));

for(int i=0;i{

wsheet.addCell(new Label(0, i+3, list.get(i).getCityid()));   //数据库的城市代码字段

wsheet.addCell(new Label(1, i+3, list.get(i).getName()));  //数据库的城市名字段

}

// 主体内容生成结束

wbook.write(); // 写入文件

wbook.close();

os.close(); // 关闭流

return true;

}

catch(Exception ex)

{

ex.printStackTrace();

return false;

}

}