jsp中导入导出excel，ssh框架

导入Excel：jsp中

1 <form action="user_importTradingMoney" enctype="multipart/form-data" method="post">

2 <label>导入数据

3             <input type="file" name="tradingMoneyFile" value="选择文件">

4             <input type="submit" value="提交数据">

5             </label>

6 </form>

action中：

action最前面肯定要有下面这几句，而且要有其对应的set、get方法

private File tradingMoneyFile;// 实际上传文件

private String tradingMoneyFileContentType; // 文件的内容类型

private String tradingMoneyFileFileName; // 上传文件名

 这是为了通过struts2自动获得上传的文件，当然struts.xml中肯定要有这几句：

1 <constant name="struts.i18n.reload" value="true" />

2     <constant name="struts.configuration.xml.reload" value="true" />

3     <constant name="struts.devMode" value="true" />

4     <constant name=" struts.action.extension" value="action,," />

5     <constant name="struts.multipart.maxSize" value="102400000000000" />

文件大小什么的设定自己看着办。。。。

然后action中的importTradingMoney方法如下：

 1 //导入交易金额的Excel表

 2     public String importTradingMoney(){

 3         HttpServletRequest request = ServletActionContext.getRequest();

 4         Calendar cal = Calendar.getInstance();

 5         int month = cal.get(Calendar.MONTH);

 6         int year = cal.get(Calendar.YEAR);

 7          jxl.Workbook wb=null;

 8          try {

 9             //InputStream is=new FileInputStream(tradingMoneyFile);//读取存放数据的excel表格在电脑中的路径

10             InputStream is=new FileInputStream(tradingMoneyFile);

11             wb =Workbook.getWorkbook(is);//创建workbook对象，我的理解就是这个整个的excel

12             Sheet s=wb.getSheet(0);//创建sheet，其实就是excel中的每一页，其中的每一张表，他的下标是从0开始的//这里也就是取得第一张表

13             int rsRows=s.getRows();//得到所有的行

14             int rsColumns=s.getColumns();//得到所有的列

15             for(int i=1;i<rsRows;i++){

16                 String userName=s.getCell(0, i).getContents();//(列，行)

17                 int tradingMoney=Integer.parseInt(s.getCell(1, i).getContents().toString());

18                                 TradingMoney tradingMoneyClass=new TradingMoney();

19                 tradingMoneyClass.setUserName(userName);

20                 tradingMoneyClass.setTradingMoney(tradingMoney);

21                 tradingMoneyClass.setYear(year);

22                 tradingMoneyClass.setMonth(month);

23                 userService.addTradingMoney(tradingMoneyClass);

24             }

25         } catch (FileNotFoundException e) {

26             // TODO Auto-generated catch block

27             e.printStackTrace();

28         } catch (BiffException e) {

29             // TODO Auto-generated catch block

30             e.printStackTrace();

31         } catch (IndexOutOfBoundsException e) {

32             // TODO Auto-generated catch block

33             e.printStackTrace();

34         } catch (IOException e) {

35             // TODO Auto-generated catch block

36             e.printStackTrace();

37         } catch (Exception e) {

38             // TODO Auto-generated catch block

39             e.printStackTrace();

40         }

41          List<User> userList = null;

42         try {

43             userList = userService.selectUser(null, null);

44         } catch (Exception e) {

45             // TODO Auto-generated catch block

46             e.printStackTrace();

47         }

48         request.setAttribute("userList", userList);

49         return "selectUser";

50     }

---

至于excel的导出，我只是简单地把当前页面复制到了excel中：

1 <%@page import="java.text.SimpleDateFormat"%>  

2   <%

3       SimpleDateFormat sf = new SimpleDateFormat("yyyyMMdd");

4       String filename = new String(("佣金明细-"+sf.format(new Date())).getBytes("utf8"),"ISO-8859-1"); 

5       response.setHeader("Content-disposition","attachment; filename="+filename+".xls"); 

6   %>

因为我要复制a.jsp页面的内容到excel中，而a.jsp中的内容又是便利list而出来，如果直接把上面这段代码加入到a.jsp中，那么a.jsp中的内容你就会看不到，这个页面一打开就会让你下载，所以就没有那种先预览再下载的效果了。。。。所以就在a.jsp中加了一个按钮

1 <input type="button" value="结果导出为Excel" style="width:120px" class="button-action" onclick="toExcel(<s:property value='#request.owerUser.id' />,'${request.owerUser.userAccount }')"/>

1 var userIdvar,userAccountvar;

2         function toExcel(userIdvar,userAccountvar){

3 //脚本运行后，将在新窗体newwindow中打开，宽为100，高为400，距屏顶0象素，屏左0象素，无工具条，无菜单条，无滚动条，不可调整大小，无地址栏，无状态栏。

4 window.open('reportUser_selectDetailReportUser?notice=1&userId='+userIdvar+'&userAccount='+userAccountvar,'newwindow','height=600,width=1200,top=80,left=80,toolbar=no,menubar=no,scrollbars=yes, resizable=yes,location=no, status=no');

5         };

就是重新发一遍请求到b.jsp中，其内容与a.jsp相同，所以这个b.jsp就不需要打开了。。。一切ok！

 

 

刚刚新增了不是简单地copy页面，而是从action导出excel表：

  1 //导出Excel表

  2     public void exportForm(){

  3         HttpServletRequest request = ServletActionContext.getRequest();

  4         try {

  5         request.setCharacterEncoding("utf8");

  6 

  7         Date now = new Date();

  8         SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");

  9         String sDate = sdf.format(now);

 10         String fileName = new String(("用户-"+sDate).getBytes("utf8"),"ISO-8859-1"); 

 11         String file = fileName+".xls";

 12 

 13         HttpServletResponse response = ServletActionContext.getResponse();

 14         response.setContentType("application/vnd.ms-excel");

 15         response.setHeader("Content-Disposition" ,"attachment;filename="+file+"");

 16         OutputStream os = response.getOutputStream();

 17         String[] title = {"姓名","账号","角色","电话","邮箱","发展人账号","备注"};

 18         int i=0;

 19 

 20         WritableWorkbook wwb = Workbook.createWorkbook(os);

 21         WritableSheet ws = wwb.createSheet("用户表", 0);

 22         ws.setColumnView(0,15);

 23         ws.setColumnView(1,15);

 24         ws.setColumnView(2,20);

 25         ws.setColumnView(3,15);

 26         ws.setColumnView(4,18);

 27         ws.setColumnView(5,15);

 28         ws.setColumnView(6,35);

 29         ws.setColumnView(7,15);

 30         

 31 

 32         for( i=0;i<title.length;i++){

 33               WritableFont wf = new WritableFont(WritableFont.TIMES, 11, WritableFont.BOLD, false);

 34               WritableCellFormat wcfF = new WritableCellFormat(wf);

 35               Label labelCF = new Label(i, 0, title[i],wcfF);

 36               ws.addCell(labelCF);

 37         }

 38 

 39         i=1;

 40         String  userName = null;

 41         String  userAccount = null;

 42         String  userRole = null;

 43         String  userPhone = null;

 44         String  userEmail = null;

 45         String  higherAgentAccount = null;

 46         String  userNote = null;

 47 

 48         //根据selectedIds，生成一个List

 49 

 50 

 51         //List list = this.pageBean.getList();

 52 

 53         List list = userService.selectUser(null, null);

 54         Iterator it  = list.iterator(); // 获得一个迭代子

 55 

 56         while (it.hasNext()) {

 57             User v = (User)it.next(); // 得到下一个元素

 58                             

 59             userName = v.getUserName();

 60             Label labelC0 = new Label(0,i,userName);

 61             ws.addCell(labelC0);

 62     

 63             userAccount = v.getUserAccount();

 64             Label labelC1 = new Label(1,i,userAccount);

 65             ws.addCell(labelC1);

 66     

 67             userRole = v.getRole().getRoleName();

 68             Label labelC2 = new Label(2,i,userRole);

 69             ws.addCell(labelC2);

 70     

 71     

 72             userPhone = v.getUserPhone();

 73             Label labelC3 = new Label(3,i,userPhone);

 74             ws.addCell(labelC3);

 75     

 76             userEmail = v.getUserEmail();

 77             Label labelC4 = new Label(4,i,userEmail);

 78             ws.addCell(labelC4);

 79     

 80             higherAgentAccount = v.getHigherAgentAccount();

 81             Label labelC5 = new Label(5,i,higherAgentAccount);

 82             ws.addCell(labelC5);

 83     

 84             userNote = v.getUserNote();

 85             Label labelC6 = new Label(6,i,userNote);

 86             ws.addCell(labelC6);

 87     

 88             i++;   

 89         }

 90         //写入Exel工作表

 91         os.flush();

 92            wwb.write();

 93            //关闭Excel工作薄对象

 94            wwb.close();

 95         os.close();

 96         } catch (Exception e) {

 97 

 98         e.printStackTrace();

 99         }

100     }

 

//如果想打开并写入一个已经存在的excel，只能通过副本操作

//Excel获得文件 

Workbook wb2=Workbook.getWorkbook(excelFile); 

//打开一个文件的副本，并且指定数据写回到原文件 

WritableWorkbook wwb2= Workbook.createWorkbook(excelFile,wb2); 

WritableSheet ws = wwb2.getSheet(0);