Flex导入Excel文件示例

 

1.SDK3.0
2.导入文件用FileFilter过滤。由于是示例，只写了xls
3.导入文件解析在Java端完成，前端在导入之后，从session中得到导入文件的解析结果，然后再调用Java方法销毁session

[代码] [Flash/ActionScript/Flex]代码

 

01	<?xml version="1.0" encoding="utf-8"?>

02	<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">

03	<mx:Script>

04

<![CDATA[

05	import mx.rpc.remoting.mxml.RemoteObject;

06	import mx.collections.ArrayCollection;

07	import mx.controls.Alert;

08	import mx.rpc.events.FaultEvent;

09	import mx.rpc.events.ResultEvent;

10	private var fileRefer:FileReference = new FileReference()

11	//浏览按钮，选择文件

12	private function importClick(event:MouseEvent):void {

13

//过滤文件

14	var fileType:FileFilter = new FileFilter("Excel","*.xls");

15	var fileTypes:Array = new  Array(fileType);

16

//导入

17	fileRefer.addEventListener(Event.SELECT,parseExcel);

18	fileRefer.browse(fileTypes);

19

}

20

21	private function parseExcel(evt:Event):void {

22	//调用Servlet

23	var url:URLRequest=new  URLRequest("/web/ExcelUp?loadType=parseExcel");

24	fileRefer.upload(url);

25	//定时器  获取session

26	setTimeout(function():void{

27	readfromflex();

28

},3000);

29

}

30	//Remote对象

31	private var ro:RemoteObject=new RemoteObject("operdisp_display_excelImportService");

32	//获取session

33	private function readfromflex():void {

34	ro.showBusyCursor = true;

35	ro.getExcelSession();

36	ro.getExcelSession.addEventListener(ResultEvent.RESULT,getExcelResult);

37	ro.getExcelSession.addEventListener(FaultEvent.FAULT,setFault);

38

}

39

//回调

40	private function getExcelResult(e:ResultEvent):void{

41	if (e.result != null) {

42	var arr:ArrayCollection = e.result as ArrayCollection;

43	//打印导入的excel中的数据

44	log.debug(arr);

45	//销毁session

46	distorySession();

47

} else {

48	readfromflex();

49

}

50

}

51	//销毁session

52	private function distorySession():void {

53	ro.showBusyCursor = true;

54	ro.distorySession();

55	ro.distorySession.addEventListener(ResultEvent.RESULT,distorySuccess);

56	ro.distorySession.addEventListener(FaultEvent.FAULT,setFault);

57

}

58

59	private function distorySuccess(e:ResultEvent):void {

60

61

}

62	private function setFault(e:FaultEvent):void{

63	Alert.yesLabel="确认";

64

}

65

]]>

66	</mx:Script>

67	<mx:Button label="导入" click="importClick(event)">

68	</mx:Button>

69	</mx:Application>

[代码] [Java]代码

01	package demo

02

03	import java.io.ByteArrayOutputStream;

04	import java.io.IOException;

05	import java.io.InputStream;

06	import java.util.Iterator;

07	import java.util.List;

08

09	import javax.servlet.ServletException;

10	import javax.servlet.http.HttpServlet;

11	import javax.servlet.http.HttpServletRequest;

12	import javax.servlet.http.HttpServletResponse;

13

14	import org.apache.commons.fileupload.FileItem;

15	import org.apache.commons.fileupload.disk.DiskFileItemFactory;

16	import org.apache.commons.fileupload.servlet.ServletFileUpload;

17

18	import demo.invoke.demoServiceInvoke;

19	import epm.core.model.SysUserInfo;

20	import epm.sp.priv.user.webapp.util.UserUtil;

21	@SuppressWarnings("unchecked")

22	public class ExcelServlet extends HttpServlet {

23

24	private static final long serialVersionUID = 678209845731804056L;

25

26

27

@Override

28	protected void doPost(HttpServletRequest request,

29	HttpServletResponse response) throws ServletException,IOException {

30	doGet(request,response);

31

}

32

33

@Override

34	protected void doGet(HttpServletRequest request,

35	HttpServletResponse response) throws ServletException,IOException {

36	request.setCharacterEncoding("UTF-8");

37	String loadType = request.getParameter("loadType");

38

try {

39	if ("parseExcel".endsWith(loadType)) {

40	parseExcel(request,response);

41

}

42

}

43	catch (Exception e) {

44	e.printStackTrace();

45

}

46

}

47

48

//导入excel

49	public void parseExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {

50	DiskFileItemFactory factory = new DiskFileItemFactory();

51	ServletFileUpload fileUp = new ServletFileUpload(factory);

52	fileUp.setSizeMax(1024 * 1025 * 1024);

53	List items = fileUp.parseRequest(request);

54	Iterator iter = items.iterator();

55	while (iter.hasNext()) {

56	FileItem item = (FileItem) iter.next();

57	if (!item.isFormField()) {

58	InputStream stream = item.getInputStream();

59	ByteArrayOutputStream out = new ByteArrayOutputStream(1000);

60	byte[] b = new byte[1000];

61

int n;

62	while ((n = stream.read(b)) != -1)

63	out.write(b,0,n);

64	stream.close();

65	out.close();

66	out.toByteArray();

67	byte[] file = out.toByteArray();

68

try {

69	demoServiceInvoke.Invoke service = demoServiceInvoke.getInstance(request);

70	List list = service.getExcel(file,acOrgNo);

71	request.getSession().setAttribute("recordInfo",list);

72	request.getSession().setAttribute("error","");

73	} catch(Exception e) {

74	request.getSession().setAttribute("recordInfo",null);

75	request.getSession().setAttribute("error",e.getMessage());

76

}

77

}

78

}

79

}

80

}

 

仅供参考