在Struts1中對使用fileUpload進行文件上傳進行了封裝，通過FormFile接口進行處理使得操作變得更加簡單，
首先看一下流程圖：
下面將對每一部分進行講解
輸入界面：upload.jsp
注意：表單method 使用post，enctype使用multipart/form-data
上傳控件使用：<html:file/>
<%@ 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 UploadForm form</title>
</head>
<body>
<html:form action="/upload" method="post" enctype="multipart/form-data">
theFile : <html:file property="theFile"/><html:errors property="theFile"/><br/>
<html:submit/><html:cancel/>
</html:form>
</body>
</html>
ActionForm:com.qiudawei115.struts.form.UploadForm
注意這裏使用的是FormFile
package com.qiudawei115.struts.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;
/**
* MyEclipse Struts
* Creation date: 06-11-2007
*
* XDoclet definition:
* @struts.form name="uploadForm"
*/
public class UploadForm extends ActionForm {
/*
* Generated fields
*/
/** theFile property */
private FormFile theFile;
/*
* Generated Methods
*/
/**
* 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
}
/**
* Returns the theFile.
* @return CommonsMultipartRequestHandler$CommonsFormFile
*/
public FormFile getTheFile() {
return theFile;
}
/**
* Set the theFile.
* @param theFile The theFile to set
*/
public void setTheFile(
FormFile theFile) {
this.theFile = theFile;
}
}
Action： com.qiudawei115.struts.action.UploadAction:處理上傳文件
“工作：獲取上傳文件封裝FormFile，獲取上牀文件信息並保存在session中
package com.qiudawei115.struts.action;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
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 com.qiudawei115.struts.form.UploadForm;
/**
* MyEclipse Struts
* Creation date: 06-11-2007
*
* XDoclet definition:
* @struts.action path="/upload" name="uploadForm" input="/upload.jsp" scope="request" validate="true"
*/
public class UploadAction 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) {
UploadForm uploadForm = (UploadForm) form;// TODO Auto-generated method stub
/**
* 獲取上傳文件的信息
* 封裝成爲FormFile格式
*/
FormFile theFile=uploadForm.getTheFile();
String contentType=theFile.getContentType();
String fileName=theFile.getFileName();
int fileSize=theFile.getFileSize();
byte[] fileData=null;
try {
fileData=theFile.getFileData();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("contentType:"+contentType);
System.out.println("fileName:"+fileName);
System.out.println("fileSize:"+fileSize);
FileOutputStream out=null;
try {
out=new FileOutputStream(new File("c://"+fileName));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
out.write(fileData);
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
HttpSession session=request.getSession();
session.setAttribute("contentType", contentType);
session.setAttribute("fileName", fileName);
session.setAttribute("fileSize", Integer.valueOf(fileSize));
session.setAttribute("location", "c://"+fileName);
return mapping.findForward("display");
}
}
MyJsp.jsp通過session顯示上傳文件的信息
<%@ page language="java" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
<head>
<html:base />
<title>MyJsp.jsp</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
This a struts page. <br>
<%session=request.getSession(); %>
contentType:<%=session.getAttribute("contentType") %><br>
FileName:<%=session.getAttribute("fileName") %><br>
FileSize:<%=session.getAttribute("fileSize") %><br>
Location:<%=session.getAttribute("location") %>
</body>
</html:html>
這個只是一個簡單的例子，可根據需要在進行改進，有需要源代碼的可和我聯繫.