java excel api实现输出EXCEL文件下载

[// 下载本地文件String fileName = 苹果知识库授权网点整理汇总副本20130210.xls.toString(); // 文件的默认保存名//File file = new File(Constant.OPLOAD_PAHT,fileName

String sorefitem=request.getParameter("SOREFITEM");

sorefitem = "24326";

String sheetname = "productsitems";

String excelsql = "select oi.sorefitem,po.psuppliercompany suppliername,oi.pname productname,oi.ivendpartnumber productcode,oi.oqty quantity,oi.osellprice price,oi.pricecurrefitem currency,po.ponumber "

+" from ecorders.orderitems oi,ecorders.purchaseorders po "

+" where (oi.ostatus>3 or oi.ostatus=3 and oi.osubstatus=4) AND oi.sorefitem="+sorefitem

+" AND oi.sorefitem=po.sorefitem and oi.osellerid=po.psupplierid" ;

int col_num = 0;

java.sql.Statement stm = null;

java.sql.ResultSet rs = null;

java.sql.Connection conn = null;try...{

Class.forName("oracle.jdbc.driver.OracleDriver");

}catch (ClassNotFoundException e)

...{ System.out.println ("no exist driver");

System.exit(0);

}

try

...{

response.reset();

response.setContentType("application/vnd.ms-excel;charset=UTF-8");

response.setHeader("Content-Disposition" ,"attachment;filename="+new String("导出采购商明细报表Excel.xls".getBytes(),"iso-8859-1"));

OutputStream os = response.getOutputStream();//将 WritableWorkbook 写入到输出流

jxl.write.WritableWorkbook wwb = jxl.Workbook.createWorkbook(os);    //创建Excel工作表

jxl.write.WritableSheet ws = wwb.createSheet("sheet_1",0);

col_num = 7;

jxl.write.Label label_head;

label_head = new jxl.write.Label(0,0,"请购单号");

ws.addCell(label_head);

label_head = new jxl.write.Label(1,0,"供应商名");

ws.addCell(label_head);

label_head = new jxl.write.Label(2,0,"产品规格型号");

ws.addCell(label_head);

label_head = new jxl.write.Label(3,0,"产品编码");

ws.addCell(label_head);

label_head = new jxl.write.Label(4,0,"数量");

ws.addCell(label_head);

label_head = new jxl.write.Label(5,0,"单价");

ws.addCell(label_head);

label_head = new jxl.write.Label(6,0,"定单号");

ws.addCell(label_head);//结果集中的数据添加到excel中

jxl.write.Number label_num;

jxl.write.Label label_str;

jxl.write.WritableCellFormat floatFormat;

int numrow = 1;

System.out.println(System.currentTimeMillis()+" welcome to hehe!!!!!!!!!!!");

conn = java.sql.DriverManager.getConnection("jdbc:oracle:thin:@192.168.1.180:1521:DB","system","manager");

stm = conn.createStatement();

rs = stm.executeQuery(excelsql);

while(rs.next())

...{

System.out.println(System.currentTimeMillis()+"   welcome to while!!!!!!!!!");

label_num = new jxl.write.Number(0,numrow,rs.getInt("sorefitem"));

ws.addCell(label_num);

label_str = new jxl.write.Label(1,numrow,rs.getString("suppliername"));

ws.addCell(label_str);

label_str = new jxl.write.Label(2,numrow,rs.getString("productname"));

ws.addCell(label_str);

label_str = new jxl.write.Label(3,numrow,rs.getString("productcode"));

ws.addCell(label_str);

floatFormat = new jxl.write.WritableCellFormat (jxl.write.NumberFormats.FLOAT);

label_num = new jxl.write.Number(4,numrow,rs.getDouble("quantity"),floatFormat);

ws.addCell(label_num);

label_num = new jxl.write.Number(5,numrow,rs.getDouble("price"),floatFormat);

ws.addCell(label_num);

label_str = new jxl.write.Label(6,numrow,rs.getString("ponumber"));

ws.addCell(label_str);

numrow ++;

}

wwb.write();

wwb.close();

os.flush();

os.close();

}

catch(java.sql.SQLException sqle)...{

System.out.println("sql error");

}

catch(Exception e)...{

System.out.println("catch error ------");

e.printStackTrace();

}

finally...{

System.out.println(System.currentTimeMillis()+ "welcome to finally!!!!!!!");

if(stm != null)

try...{

stm.close();

}catch(Exception fe) ...{ }

if(conn != null)

try...{

conn.close();

}

catch(Exception fe2)...{ }

}

%>

JXL包下载页面：http://sourceforge.net/project/showfiles.php?group_id=79926

如果要输出文件到服务器保存：

jxl.write.WritableWorkbook wwb = jxl.Workbook.createWorkbook(new   File("D:/JSPweb/112WebModule1/download_excel/"+excelfilename+"交接箱统计故障数.xls")); //创建Excel工作表[好久没有更新BLog内容了。主要是一直解决工作中遇到的一个问题，即需要把定单的产品项名细 生成一个excel文件，其实问题本身没有什么特别的技术要� ...]