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jsp\struts1.2\struts2 中文件下传

热度：602   发布时间：2012-09-14 23:00:49.0
jsp\struts1.2\struts2 中文件上传

刚刚做了三个文件上传的Demo
a.在jsp中简单利用Commons-fileupload组件实现
b.在struts1.2中实现
c.在sturts2中实现
现在把Code与大家分享一下..
注:此为三个简单Demo,仅供练习用,并没有做太多上传限制
如有兴趣可以自行查看相关文档说明

一.在JSP环境中利用Commons-fileupload组件实现文件上传
?? 1.页面upload.jsp清单如下:

Java代码 复制代码?收藏代码
  1. <%@?page?language="java"?import="java.util.*"?pageEncoding="UTF-8"%> ??
  2. ??
  3. <!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN"> ??
  4. <html> ??
  5. ??<head> ??
  6. ????<title>The?FileUpload?Demo</title> ??
  7. ??</head> ??
  8. ?? ??
  9. ??<body> ??
  10. ????<form?action="UploadFile"?method="post"?enctype="multipart/form-data"> ??
  11. ????????<p><input?type="text"?name="fileinfo"?value="">文件介绍</p> ??
  12. ????????<p><input?type="file"?name="myfile"?value="浏览文件"></p> ??
  13. ????????<p><input?type="submit"?value="上?传"></p> ??
  14. ????</form> ??
  15. ??</body> ??
  16. </html>??
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>The FileUpload Demo</title>
  </head>
  
  <body>
    <form action="UploadFile" method="post" enctype="multipart/form-data">
    	<p><input type="text" name="fileinfo" value="">文件介绍</p>
    	<p><input type="file" name="myfile" value="浏览文件"></p>
    	<p><input type="submit" value="上 传"></p>
    </form>
  </body>
</html>


注意:在上传表单中,既有普通文本域也有文件上传域

2.FileUplaodServlet.java清单如下:

Java代码 复制代码?收藏代码
  1. package?org.chris.fileupload; ??
  2. ??
  3. import?java.io.File; ??
  4. import?java.io.IOException; ??
  5. import?java.util.Iterator; ??
  6. import?java.util.List; ??
  7. ??
  8. import?javax.servlet.ServletException; ??
  9. import?javax.servlet.http.*; ??
  10. ??
  11. import?org.apache.commons.fileupload.FileItem; ??
  12. import?org.apache.commons.fileupload.FileItemFactory; ??
  13. import?org.apache.commons.fileupload.disk.DiskFileItemFactory; ??
  14. import?org.apache.commons.fileupload.servlet.ServletFileUpload; ??
  15. ??
  16. public?class?FileUplaodServlet?extends?HttpServlet?{ ??
  17. ??
  18. ????protected?void?doGet(HttpServletRequest?request,?HttpServletResponse?response)?throws?ServletException,?IOException?{ ??
  19. ????????doPost(request,?response); ??
  20. ????} ??
  21. ??
  22. ????protected?void?doPost(HttpServletRequest?request,?HttpServletResponse?response)?throws?ServletException,?IOException?{ ??
  23. ???????? ??
  24. ????????request.setCharacterEncoding("UTF-8"); ??
  25. ???????? ??
  26. ????????//文件的上传部分 ??
  27. ????????boolean?isMultipart?=?ServletFileUpload.isMultipartContent(request); ??
  28. ???????? ??
  29. ????????if(isMultipart) ??
  30. ????????{ ??
  31. ????????????try?{ ??
  32. ????????????????FileItemFactory?factory?=?new?DiskFileItemFactory(); ??
  33. ????????????????ServletFileUpload?fileload?=?new?ServletFileUpload(factory); ??
  34. ???????????????? ??
  35. //???????????????设置最大文件尺寸，这里是4MB???? ??
  36. ????????????????fileload.setSizeMax(4194304); ??
  37. ????????????????List<FileItem>?files?=?fileload.parseRequest(request); ??
  38. ????????????????Iterator<FileItem>?iterator?=?files.iterator();??? ??
  39. ????????????????while(iterator.hasNext()) ??
  40. ????????????????{ ??
  41. ????????????????????FileItem?item?=?iterator.next(); ??
  42. ????????????????????if(item.isFormField()) ??
  43. ????????????????????{ ??
  44. ????????????????????????String?name?=?item.getFieldName(); ??
  45. ????????????????????????String?value?=?item.getString(); ??
  46. ????????????????????????System.out.println("表单域名为:?"?+?name?+?"值为:?"?+?value); ??
  47. ????????????????????}else??
  48. ????????????????????{ ??
  49. ????????????????????????//获得获得文件名，此文件名包括路径 ??
  50. ????????????????????????String?filename?=?item.getName(); ??
  51. ????????????????????????if(filename?!=?null) ??
  52. ????????????????????????{ ??
  53. ????????????????????????????File?file?=?new?File(filename); ??
  54. ????????????????????????????//如果此文件存在 ??
  55. ????????????????????????????if(file.exists()){ ??
  56. ????????????????????????????????File?filetoserver?=?new?File("d:\\upload\\",file.getName()); ??
  57. ????????????????????????????????item.write(filetoserver); ??
  58. ????????????????????????????????System.out.println("文件?"?+?filetoserver.getName()?+?"?上传成功!!"); ??
  59. ????????????????????????????} ??
  60. ????????????????????????} ??
  61. ????????????????????} ??
  62. ????????????????} ??
  63. ????????????}?catch?(Exception?e)?{ ??
  64. ????????????????System.out.println(e.getStackTrace()); ??
  65. ????????????} ??
  66. ????????} ??
  67. ????} ??
  68. }??
package org.chris.fileupload;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.*;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class FileUplaodServlet extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		request.setCharacterEncoding("UTF-8");
		
		//文件的上传部分
		boolean isMultipart = ServletFileUpload.isMultipartContent(request);
		
		if(isMultipart)
		{
			try {
				FileItemFactory factory = new DiskFileItemFactory();
				ServletFileUpload fileload = new ServletFileUpload(factory);
				
//				 设置最大文件尺寸，这里是4MB    
				fileload.setSizeMax(4194304);
				List<FileItem> files = fileload.parseRequest(request);
				Iterator<FileItem> iterator = files.iterator();	
				while(iterator.hasNext())
				{
					FileItem item = iterator.next();
					if(item.isFormField())
					{
						String name = item.getFieldName();
						String value = item.getString();
						System.out.println("表单域名为: " + name + "值为: " + value);
					}else
					{
						//获得获得文件名，此文件名包括路径
						String filename = item.getName();
						if(filename != null)
						{
							File file = new File(filename);
							//如果此文件存在
							if(file.exists()){
								File filetoserver = new File("d:\\upload\\",file.getName());
								item.write(filetoserver);
								System.out.println("文件 " + filetoserver.getName() + " 上传成功!!");
							}
						}
					}
				}
			} catch (Exception e) {
				System.out.println(e.getStackTrace());
			}
		}
	}
}


3.web.xml清单如下:

Java代码 复制代码?收藏代码
  1. <?xml?version="1.0"?encoding="UTF-8"?> ??
  2. <web-app?version="2.4"? ??
  3. ????xmlns="http://java.sun.com/xml/ns/j2ee"? ??
  4. ????xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"? ??
  5. ????xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee? ??
  6. ????http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> ??
  7. ???? ??
  8. ????<servlet> ??
  9. ????????<servlet-name>UploadFileServlet</servlet-name> ??
  10. ????????<servlet-class> ??
  11. ????????????org.chris.fileupload.FileUplaodServlet ??
  12. ????????</servlet-class> ??
  13. ????</servlet> ??
  14. ??
  15. ????<servlet-mapping> ??
  16. ????????<servlet-name>UploadFileServlet</servlet-name> ??
  17. ????????<url-pattern>/UploadFile</url-pattern> ??
  18. ????</servlet-mapping> ??
  19. ???? ??
  20. ????<welcome-file-list> ??
  21. ????????<welcome-file>/Index.jsp</welcome-file> ??
  22. ????</welcome-file-list> ??
  23. ???? ??
  24. </web-app>??
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	
	<servlet>
		<servlet-name>UploadFileServlet</servlet-name>
		<servlet-class>
			org.chris.fileupload.FileUplaodServlet
		</servlet-class>
	</servlet>

	<servlet-mapping>
		<servlet-name>UploadFileServlet</servlet-name>
		<url-pattern>/UploadFile</url-pattern>
	</servlet-mapping>
	
	<welcome-file-list>
		<welcome-file>/Index.jsp</welcome-file>
	</welcome-file-list>
	
</web-app>



二.在strut1.2中实现
1.上传页面file.jsp 清单如下:

Java代码 复制代码?收藏代码
  1. <%@?page?language="java"?pageEncoding="ISO-8859-1"%> ??
  2. <%@?taglib?uri="http://jakarta.apache.org/struts/tags-bean"?prefix="bean"%>? ??
  3. <%@?taglib?uri="http://jakarta.apache.org/struts/tags-html"?prefix="html"%> ??
  4. ? ??
  5. <html>? ??
  6. ????<head> ??
  7. ????????<title>JSP?for?FileForm?form</title> ??
  8. ????</head> ??
  9. ????<body> ??
  10. ????????<html:form?action="/file"?enctype="multipart/form-data"> ??
  11. ????????<html:file?property="file1"></html:file> ??
  12. ????????????<html:submit/><html:cancel/> ??
  13. ????????</html:form> ??
  14. ????</body> ??
  15. </html>??
<%@ page language="java" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%> 
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
 
<html> 
	<head>
		<title>JSP for FileForm form</title>
	</head>
	<body>
		<html:form action="/file" enctype="multipart/form-data">
		<html:file property="file1"></html:file>
			<html:submit/><html:cancel/>
		</html:form>
	</body>
</html>



2.FileAtion.java的清单如下:

Java代码 复制代码?收藏代码
  1. /* ?
  2. ?*?Generated?by?MyEclipse?Struts ?
  3. ?*?Template?path:?templates/java/JavaClass.vtl ?
  4. ?*/??
  5. package?action; ??
  6. ??
  7. import?java.io.*; ??
  8. ??
  9. import?javax.servlet.http.HttpServletRequest; ??
  10. import?javax.servlet.http.HttpServletResponse; ??
  11. import?org.apache.struts.action.Action; ??
  12. import?org.apache.struts.action.ActionForm; ??
  13. import?org.apache.struts.action.ActionForward; ??
  14. import?org.apache.struts.action.ActionMapping; ??
  15. import?org.apache.struts.upload.FormFile; ??
  16. ??
  17. import?form.FileForm; ??
  18. ??
  19. /**? ?
  20. ?*?@author?Chris ?
  21. ?*?Creation?date:?6-27-2008 ?
  22. ?*? ?
  23. ?*?XDoclet?definition: ?
  24. ?*?@struts.action?path="/file"?name="fileForm"?input="/file.jsp" ?
  25. ?*/??
  26. public?class?FileAction?extends?Action?{ ??
  27. ????/* ?
  28. ?????*?Generated?Methods ?
  29. ?????*/??
  30. ??
  31. ????/**? ?
  32. ?????*?Method?execute ?
  33. ?????*?@param?mapping ?
  34. ?????*?@param?form ?
  35. ?????*?@param?request ?
  36. ?????*?@param?response ?
  37. ?????*?@return?ActionForward ?
  38. ?????*/??
  39. ????public?ActionForward?execute(ActionMapping?mapping,?ActionForm?form, ??
  40. ????????????HttpServletRequest?request,?HttpServletResponse?response)?{ ??
  41. ????????FileForm?fileForm?=?(FileForm)?form; ??
  42. ????????FormFile?file1=fileForm.getFile1(); ??
  43. ????????if(file1!=null){ ??
  44. ????????????//上传路径 ??
  45. ????????????String?dir=request.getSession(true).getServletContext().getRealPath("/upload"); ??
  46. ????????????OutputStream?fos=null; ??
  47. ????????????try?{ ??
  48. ????????????????fos=new?FileOutputStream(dir+"/"+file1.getFileName()); ??
  49. ????????????????fos.write(file1.getFileData(),0,file1.getFileSize()); ??
  50. ????????????????fos.flush(); ??
  51. ????????????}?catch?(Exception?e)?{ ??
  52. ????????????????//?TODO?Auto-generated?catch?block ??
  53. ????????????????e.printStackTrace(); ??
  54. ????????????}finally{ ??
  55. ????????????????try{ ??
  56. ????????????????fos.close(); ??
  57. ????????????????}catch(Exception?e){} ??
  58. ????????????} ??
  59. ????????} ??
  60. ????????//页面跳转 ??
  61. ????????return?mapping.findForward("success"); ??
  62. ????} ??
  63. }??
/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package action;

import java.io.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

import form.FileForm;

/** 
 * @author Chris
 * Creation date: 6-27-2008
 * 
 * XDoclet definition:
 * @struts.action path="/file" name="fileForm" input="/file.jsp"
 */
public class FileAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		FileForm fileForm = (FileForm) form;
		FormFile file1=fileForm.getFile1();
		if(file1!=null){
			//上传路径
			String dir=request.getSession(true).getServletContext().getRealPath("/upload");
			OutputStream fos=null;
			try {
				fos=new FileOutputStream(dir+"/"+file1.getFileName());
				fos.write(file1.getFileData(),0,file1.getFileSize());
				fos.flush();
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}finally{
				try{
				fos.close();
				}catch(Exception e){}
			}
		}
		//页面跳转
		return mapping.findForward("success");
	}
}



3.FileForm.java的清单如下:

Java代码 复制代码?收藏代码
  1. package?form; ??
  2. ??
  3. import?javax.servlet.http.HttpServletRequest; ??
  4. import?org.apache.struts.action.ActionErrors; ??
  5. import?org.apache.struts.action.ActionForm; ??
  6. import?org.apache.struts.action.ActionMapping; ??
  7. import?org.apache.struts.upload.FormFile; ??
  8. ??
  9. /**? ?
  10. ?*?@author?Chris ?
  11. ?*?Creation?date:?6-27-2008 ?
  12. ?*? ?
  13. ?*?XDoclet?definition: ?
  14. ?*?@struts.form?name="fileForm" ?
  15. ?*/??
  16. public?class?FileForm?extends?ActionForm?{ ??
  17. ????/* ?
  18. ?????*?Generated?Methods ?
  19. ?????*/??
  20. ????private?FormFile?file1; ??
  21. ????/**? ?
  22. ?????*?Method?validate ?
  23. ?????*?@param?mapping ?
  24. ?????*?@param?request ?
  25. ?????*?@return?ActionErrors ?
  26. ?????*/??
  27. ????public?ActionErrors?validate(ActionMapping?mapping, ??
  28. ????????????HttpServletRequest?request)?{ ??
  29. ????????//?TODO?Auto-generated?method?stub ??
  30. ????????return?null; ??
  31. ????} ??
  32. ??
  33. ????/**? ?
  34. ?????*?Method?reset ?
  35. ?????*?@param?mapping ?
  36. ?????*?@param?request ?
  37. ?????*/??
  38. ????public?void?reset(ActionMapping?mapping,?HttpServletRequest?request)?{ ??
  39. ????????//?TODO?Auto-generated?method?stub ??
  40. ????} ??
  41. ??
  42. ????public?FormFile?getFile1()?{ ??
  43. ????????return?file1; ??
  44. ????} ??
  45. ??
  46. ????public?void?setFile1(FormFile?file1)?{ ??
  47. ????????this.file1?=?file1; ??
  48. ????} ??
  49. }??
package form;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

/** 
 * @author Chris
 * Creation date: 6-27-2008
 * 
 * XDoclet definition:
 * @struts.form name="fileForm"
 */
public class FileForm extends ActionForm {
	/*
	 * Generated Methods
	 */
	private FormFile file1;
	/** 
	 * Method validate
	 * @param mapping
	 * @param request
	 * @return ActionErrors
	 */
	public ActionErrors validate(ActionMapping mapping,
			HttpServletRequest request) {
		// TODO Auto-generated method stub
		return null;
	}

	/** 
	 * Method reset
	 * @param mapping
	 * @param request
	 */
	public void reset(ActionMapping mapping, HttpServletRequest request) {
		// TODO Auto-generated method stub
	}

	public FormFile getFile1() {
		return file1;
	}

	public void setFile1(FormFile file1) {
		this.file1 = file1;
	}
}


4.struts-config.xml的清单如下:

Java代码 复制代码?收藏代码
  1. <?xml?version="1.0"?encoding="UTF-8"?> ??
  2. <!DOCTYPE?struts-config?PUBLIC?"-//Apache?Software?Foundation//DTD?Struts?Configuration?1.2//EN"?"http://struts.apache.org/dtds/struts-config_1_2.dtd"> ??
  3. ??
  4. <struts-config> ??
  5. ??<data-sources?/> ??
  6. ??<form-beans?> ??
  7. ????<form-bean?name="fileForm"?type="form.FileForm"?/> ??
  8. ??
  9. ??</form-beans> ??
  10. ??
  11. ??<global-exceptions?/> ??
  12. ??<global-forwards?/> ??
  13. ??<action-mappings?> ??
  14. ????<action ??
  15. ??????attribute="fileForm"??
  16. ??????input="/file.jsp"??
  17. ??????name="fileForm"??
  18. ??????path="/file"??
  19. ??????type="action.FileAction"??
  20. ??????validate="false"> ??
  21. ???????<forward?name="success"?path="/file.jsp"></forward> ??
  22. ??????</action> ??
  23. ??
  24. ??</action-mappings> ??
  25. ??
  26. ??<message-resources?parameter="ApplicationResources"?/> ??
  27. </struts-config>??
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
  <data-sources />
  <form-beans >
    <form-bean name="fileForm" type="form.FileForm" />

  </form-beans>

  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action
      attribute="fileForm"
      input="/file.jsp"
      name="fileForm"
      path="/file"
      type="action.FileAction"
      validate="false">
       <forward name="success" path="/file.jsp"></forward>
      </action>

  </action-mappings>

  <message-resources parameter="ApplicationResources" />
</struts-config>


5.web.xml代码清单如下:

Java代码 复制代码?收藏代码
  1. <?xml?version="1.0"?encoding="UTF-8"?> ??
  2. <web-app?xmlns="http://java.sun.com/xml/ns/j2ee"?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?version="2.4"?xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee???http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> ??
  3. ??<servlet> ??
  4. ????<servlet-name>action</servlet-name> ??
  5. ????<servlet-class>org.apache.struts.action.ActionServlet</servlet-class> ??
  6. ????<init-param> ??
  7. ??????<param-name>config</param-name> ??
  8. ??????<param-value>/WEB-INF/struts-config.xml</param-value> ??
  9. ????</init-param> ??
  10. ????<init-param> ??
  11. ??????<param-name>debug</param-name> ??
  12. ??????<param-value>3</param-value> ??
  13. ????</init-param> ??
  14. ????<init-param> ??
  15. ??????<param-name>detail</param-name> ??
  16. ??????<param-value>3</param-value> ??
  17. ????</init-param> ??
  18. ????<load-on-startup>0</load-on-startup> ??
  19. ??</servlet> ??
  20. ??<servlet-mapping> ??
  21. ????<servlet-name>action</servlet-name> ??
  22. ????<url-pattern>*.do</url-pattern> ??
  23. ??</servlet-mapping> ??
  24. </web-app>??
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
</web-app>



三.在struts2中实现(以图片上传为例)
1.FileUpload.jsp代码清单如下:

Java代码 复制代码?收藏代码
  1. <%@?page?language="java"?import="java.util.*"?pageEncoding="utf-8"%> ??
  2. <%@?taglib?prefix="s"?uri="/struts-tags"?%> ??
  3. <html> ??
  4. ??<head> ??
  5. ????<title>The?FileUplaodDemo?In?Struts2</title> ??
  6. ??</head> ??
  7. ?? ??
  8. ??<body> ??
  9. ????<s:form?action="fileUpload.action"?method="POST"?enctype="multipart/form-data"> ??
  10. ????????<s:file?name="myFile"?label="MyFile"?></s:file> ??
  11. ????????<s:textfield?name="caption"?label="Caption"></s:textfield> ??
  12. ????????<s:submit?label="提交"></s:submit> ??
  13. ????</s:form> ??
  14. ??</body> ??
  15. </html>??
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
  <head>
  	<title>The FileUplaodDemo In Struts2</title>
  </head>
  
  <body>
    <s:form action="fileUpload.action" method="POST" enctype="multipart/form-data">
    	<s:file name="myFile" label="MyFile" ></s:file>
    	<s:textfield name="caption" label="Caption"></s:textfield>
    	<s:submit label="提交"></s:submit>
    </s:form>
  </body>
</html>



2.ShowUpload.jsp的功能清单如下:

Java代码 复制代码?收藏代码
  1. <%@?page?language="java"?import="java.util.*"?pageEncoding="utf-8"%> ??
  2. <%@?taglib?prefix="s"?uri="/struts-tags"?%> ??
  3. <html> ??
  4. ??<head> ??
  5. ????<title>ShowUpload</title> ??
  6. ??</head> ??
  7. ?? ??
  8. ??<body> ??
  9. ????<div?style?="padding:?3px;?border:?solid?1px?#cccccc;?text-align:?center"?>? ??
  10. ????????<img?src?='UploadImages/<s:property?value?="imageFileName"/>?'/> ??
  11. ????????<br?/>? ??
  12. ????????<s:property?value?="caption"/>? ??
  13. ????</div?>? ??
  14. ??</body> ??
  15. </html>??
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
  <head>
    <title>ShowUpload</title>
  </head>
  
  <body>
    <div style ="padding: 3px; border: solid 1px #cccccc; text-align: center" > 
        <img src ='UploadImages/<s:property value ="imageFileName"/> '/>
        <br /> 
        <s:property value ="caption"/> 
    </div > 
  </body>
</html>



3.FileUploadAction.java的代码清单如下 :

Java代码 复制代码?收藏代码
  1. package?com.chris; ??
  2. ??
  3. import?java.io.*; ??
  4. import?java.util.Date; ??
  5. ??
  6. import?org.apache.struts2.ServletActionContext; ??
  7. ??
  8. ??
  9. import?com.opensymphony.xwork2.ActionSupport; ??
  10. ??
  11. public?class?FileUploadAction?extends?ActionSupport{ ??
  12. ??
  13. ?????private?static?final?long?serialVersionUID?=?572146812454l?; ??
  14. ?????private?static?final?int?BUFFER_SIZE?=?16?*?1024?; ??
  15. ???? ??
  16. ?????//注意，文件上传时<s:file/>同时与myFile，myFileContentType,myFileFileName绑定 ??
  17. ?????//所以同时要提供myFileContentType,myFileFileName的set方法 ??
  18. ????? ??
  19. ?????private?File?myFile;???//上传文件 ??
  20. ?????private?String?contentType;//上传文件类型 ??
  21. ?????private?String?fileName;???//上传文件名 ??
  22. ?????private?String?imageFileName; ??
  23. ?????private?String?caption;//文件说明，与页面属性绑定 ??
  24. ???? ??
  25. ?????public?void?setMyFileContentType(String?contentType)??{ ??
  26. ?????????System.out.println("contentType?:?"?+?contentType); ??
  27. ?????????this?.contentType?=?contentType; ??
  28. ????}? ??
  29. ???? ??
  30. ?????public?void?setMyFileFileName(String?fileName)??{ ??
  31. ?????????System.out.println("FileName?:?"?+?fileName); ??
  32. ?????????this?.fileName?=?fileName; ??
  33. ????}? ??
  34. ???????? ??
  35. ?????public?void?setMyFile(File?myFile)??{ ??
  36. ?????????this?.myFile?=?myFile; ??
  37. ????}? ??
  38. ???? ??
  39. ?????public?String?getImageFileName()??{ ??
  40. ?????????return?imageFileName; ??
  41. ????}? ??
  42. ???? ??
  43. ?????public?String?getCaption()??{ ??
  44. ?????????return?caption; ??
  45. ????}? ??
  46. ? ??
  47. ??????public?void?setCaption(String?caption)??{ ??
  48. ?????????this?.caption?=?caption; ??
  49. ????}? ??
  50. ???? ??
  51. ?????private?static?void?copy(File?src,?File?dst)??{ ??
  52. ?????????try??{ ??
  53. ????????????InputStream?in?=?null?; ??
  54. ????????????OutputStream?out?=?null?; ??
  55. ?????????????try??{???????????????? ??
  56. ????????????????in?=?new?BufferedInputStream(?new?FileInputStream(src),?BUFFER_SIZE); ??
  57. ????????????????out?=?new?BufferedOutputStream(?new?FileOutputStream(dst),?BUFFER_SIZE); ??
  58. ?????????????????byte?[]?bu
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