在网上找的一个Flex文件上传代码，记录下来，以后用到的时候可以

在网上找的一个Flex文件上传代码，记录下来，以后用到的时候可以马上能用：

1. Flex 前端代码

1. <?xml?version="1.0"?encoding="utf-8"?>??
2. <s:Application?xmlns:fx="http://ns.adobe.com/mxml/2009"??
3. ??????xmlns:s="library://ns.adobe.com/flex/spark"??
4. ??????xmlns:mx="library://ns.adobe.com/flex/mx"?minWidth="955"?minHeight="600"??
5. ??????creationComplete="init();">??
6. ?<s:layout>??
7. ??<s:BasicLayout/>??
8. ?</s:layout>??
9. ?<fx:Declarations>??
10. ??<!--?将非可视元素（例如服务、值对象）放在此处?-->??
11. ?</fx:Declarations>??
12. ?<fx:Script>??
13. ??<![CDATA[??
14. ??import?flash.net.FileReference;??
15. ??import?mx.controls.Alert;??
16. ??import?mx.events.CloseEvent;??
17. ??import?flash.events.*;??
18. ????
19. ??private?var?file:?FileReference;??
20. ????
21. ??private?function?init():?void{??
22. ??Security.allowDomain("*");??
23. ??file?=?new?FileReference();??
24. ??file.addEventListener(ProgressEvent.PROGRESS,?onProgress);??
25. ??file.addEventListener(Event.SELECT,?onSelect);??
26. ??}??
27. ????
28. ??private?function?upload():?void{??
29. ??????file.browse();??
30. ??}??
31. ??private?function?onSelect(e:?Event):?void{??
32. ??Alert.show("上传?"?+?file.name?+?"?(共?"+Math.round(file.size)+"?字节)?",??
33. ??"确认上传",??
34. ??Alert.YES|Alert.NO,??
35. ??null,??
36. ??proceedWithUpload);??
37. ??}??
38. ????
39. ??private?function?onProgress(e:?ProgressEvent):?void{??
40. ??lbProgress.text?=?"?已上传?"?+?e.bytesLoaded??
41. ??+?"?字节，共?"?+?e.bytesTotal?+?"?字节";??
42. ??var?proc:?uint?=?e.bytesLoaded?/?e.bytesTotal?*?100;??
43. ??bar.setProgress(proc,?100);??
44. ??bar.label=?"当前进度:?"?+?"?"?+?proc?+?"%";??
45. ??}??
46. ????
47. ??private?function?proceedWithUpload(e:?CloseEvent):?void{??
48. ??if?(e.detail?==?Alert.YES){??
49. ??var?request:?URLRequest?=?new?URLRequest("http://localhost:8080/firstFlex/fileUploadServlet");??
50. ??try?{??
51. ??file.upload(request);??
52. ??}?catch?(error:Error)?{??
53. ?????trace("上传失败");??
54. ??}??
55. ????
56. ??}??
57. ??}??
58. ??]]>??
59. ?</fx:Script>??
60. ???
61. ?<mx:Canvas?width="100%"?height="100%">??
62. ??<mx:VBox?width="100%"?horizontalAlign="center">??
63. ???<mx:Label?id="lbProgress"?text="上传"/>??
64. ???<mx:ProgressBar?id="bar"?labelPlacement="bottom"?themeColor="#F20D7A"??
65. ???????minimum="0"?visible="true"?maximum="100"?label="当前进度:?0%"???
66. ???????direction="right"?mode="manual"?width="200"/>??
67. ???<mx:Button?label="上传文件"?click="upload();"/>?????????????
68. ??</mx:VBox>??
69. ?</mx:Canvas>??
70. </s:Application>??

2. java Servlet端代码：

?

1. package?test;??
2. ??
3. import?java.io.File;??
4. import?java.io.IOException;??
5. import?java.io.PrintWriter;??
6. import?java.util.Iterator;??
7. import?java.util.List;??
8. ??
9. 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.FileUploadException;??
16. import?org.apache.commons.fileupload.disk.DiskFileItemFactory;??
17. import?org.apache.commons.fileupload.servlet.ServletFileUpload;??
18. ??
19. public?class?FileUploadServlet?extends?HttpServlet?{??
20. ??
21. ?private?static?final?long?serialVersionUID?=?1L;??
22. //存放文件路径 ??
23. ?private?String?uploadPath?=?"D:/Tomcat?6.0/webapps/firstFlex/bin-debug/";??
24. ??
25. ??
26. ?private?int?maxPostSize?=?100?*?1024?*?1024;??
27. ??
28. ?public?FileUploadServlet()?{??
29. ??super();??
30. ?}??
31. ??
32. ?public?void?destroy()?{??
33. ??super.destroy();??
34. ?}??
35. ??
36. ??public?void?doGet(HttpServletRequest?request,?HttpServletResponse?response)??
37. ???throws?ServletException,?IOException?{??
38. ???
39. ??
40. //??String?dressId?=?request.getParameter("dressID"); ??
41. //?????System.out.println(dressId); ??
42. ???
43. ??//防止标题中还有中文字符是出现乱码 ??
44. ??request.setCharacterEncoding("UTF-8");??
45. ??response.setContentType("text/html;?charset=UTF-8");??
46. ??DiskFileItemFactory?factory?=?new?DiskFileItemFactory();??
47. ??factory.setSizeThreshold(4096);??
48. ??ServletFileUpload?upload?=?new?ServletFileUpload(factory);??
49. ??upload.setSizeMax(maxPostSize);??
50. ??try??
51. ??{??
52. ???List?fileItems?=?upload.parseRequest(request);??
53. ???Iterator?iter?=?fileItems.iterator();??
54. ???while?(iter.hasNext())??
55. ???{??
56. ????FileItem?item?=?(FileItem)?iter.next();??
57. ????if?(!item.isFormField())??
58. ????{??
59. ?????String?name?=?item.getName();??
60. ?????System.out.println(name);??
61. ?????try??
62. ?????{??
63. ??????item.write(new?File(uploadPath?+?name));??
64. ?????}??
65. ?????catch?(Exception?e)??
66. ?????{??
67. ??????e.printStackTrace();??
68. ?????}??
69. ????}??
70. ???}??
71. ??}??
72. ??catch?(FileUploadException?e)??
73. ??{??
74. ???e.printStackTrace();??
75. ??}??
76. ?}??
77. ??
78. ??public?void?doPost(HttpServletRequest?request,?IOException?{??
79. ??doGet(request,?response);??
80. ?}??
81. ??
82. ?public?void?init()?throws?ServletException?{??
83. ??//?Put?your?code?here ??
84. ?}??
85. ??
86. }??
87. ??
88. 3.下面是web.xml文件Servlet的配置部分，把它加入到web.xml中即可。??
89. ??
90. ??<servlet>????
91. ????????<servlet-name>fileUploadServlet</servlet-name>????
92. ????????<servlet-class>test.FileUploadServlet</servlet-class>????
93. ????</servlet>????????
94. ????<servlet-mapping>????
95. ????????<servlet-name>fileUploadServlet</servlet-name>????
96. ????????<url-pattern>/fileUploadServlet</url-pattern>????
97. ????</servlet-mapping>????