java导出excel表格

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        List list=new ArrayList(); //换成数据源
        response.setContentType("application/msexcel");
        response.setHeader("Content-disposition", "attachment; filename=name.xls");// 设定输出文件名称
        OutputStream os = response.getOutputStream();
        WritableWorkbook wwb = Workbook.createWorkbook(os);//创建可写工作薄  
        WritableSheet ws = wwb.createSheet("sheet1", 0);//创建可写工作表
        ws.addCell(new Label(0,0,"列名1"));//列数随你控制
        ws.addCell(new Label(1,0,"列名2"));
        ws.addCell(new Label(2,0,"列名3"));
        ws.addCell(new Label(3,0,"列名4"));
        ws.addCell(new Label(4,0,"列名5"));
        ws.addCell(new Label(5,0,"列名6"));
        ws.addCell(new Label(6,0,"列名7"));
        int i=1;
        for(T obj:list){
            ws.addCell(new Label(0,i,obj.getName()));//此处obj是个对象
            ws.addCell(new Label(1,i,obj.getName()));
            ws.addCell(new Label(2,i,obj.getName()));
            ws.addCell(new Label(3,i,obj.getName()));
            ws.addCell(new Label(4,i,obj.getName()));
            ws.addCell(new Label(5,i,obj.getName()));
            ws.addCell(new Label(6,i,obj.getName()));
            i++;
        }
        //现在可以写了  
        wwb.write();
        //写完后关闭  
        wwb.close();
        //输出流也关闭吧  
        os.close();