test.jsp
<!--这段就是网上COPY的动态生成页面-->
<%@ page language="java" pageEncoding="utf-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-tiles" prefix="tiles" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html>
<head>
<title>
multiUploadDemo
</title>
<script language="javascript">
var num = 0;
function upload(){
document.getElementById("status").innerHTML = "文件上传中...";
multiUploadForm.submit();
}
function additem(id)
{
var row,cell,str;
row = eval("document.all["+'"'+id+'"'+"]").insertRow();
if(row != null )
{
cell = row.insertCell();
str="<input type="+'"'+"file"+'"'+" name=uploadFile["+ num +"].file><input type="+'"'+"button"+'"'+" value="+'"'+"删除"+'"'+" onclick='deleteitem(this,"+'"'+"tb"+'"'+");'>"
cell.innerHTML=str;
}
num++;
}
function deleteitem(obj,id)
{
var rowNum,curRow;
curRow = obj.parentNode.parentNode;
rowNum = eval("document.all."+id).rows.length - 1;
eval("document.all["+'"'+id+'"'+"]").deleteRow(curRow.rowIndex);
}
function callback(msg)
{
document.getElementById("status").innerHTML = "文件上传完成...<br>" + msg;
}
</script>
<body bgcolor="#ffffff">
<div id="status"></div>
<html:form method="post" action="/multiUpload.do" enctype="multipart/form-data" target="hidden_frame">
<table id="tb">
</table>
</html:form>
<iframe name='hidden_frame' id="hidden_frame" style="display:none"></iframe>
<input type="button" name="btnAddFile" value="Add File" onclick="additem('tb')"/>
<input type="button" name="btnUpload" value="upload" onclick="upload()"/>
</body>
</html:html>
2.form
我把下面2个文件放在FORM包中
UploadFile .java
package com.hb.struts.form;
import java.io.Serializable;
import org.apache.struts.upload.FormFile;
public class UploadFile implements Serializable {
private FormFile file;
public FormFile getFile() {
System.out.println("run in uploadFile.getFile()");
return file;
}
public void setFile(FormFile file) {
this.file = file;
}
}
MultiUploadForm .java
package com.hb.struts.form;
import java.util.ArrayList;
import java.util.List;
import org.apache.struts.action.ActionForm;
import com.hb.struts.UploadFile;
public class MultiUploadForm extends ActionForm {
private List myFiles;
public MultiUploadForm(){
myFiles = new ArrayList();
myFiles.add(new UploadFile());
}
public List getMyFiles() {
return myFiles;
}
//注意这个方法的定义 不加中间的循环是会出错的
public UploadFile getUploadFile(int index){
int size = myFiles.size();
if(index>size-1){
for(int i=0;i<index-size+1;i++){
myFiles.add(new UploadFile());
}
}
return (UploadFile)myFiles.get(index);
}
public void setMyFiles(List myFiles) {
this.myFiles = myFiles;
}
}
3.action
package com.hb.struts.action;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
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;
public class MultiUploadAction extends Action {
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
MultiUploadForm multiUploadForm = (MultiUploadForm) form;
List myFiles = multiUploadForm.getMyFiles();
String fileStr = "";
for (int i = 0; i < myFiles.size(); i++) {
UploadFile uploadFile = (UploadFile) myFiles.get(i);
FormFile file = uploadFile.getFile();
if (file == null) {
System.out.println("file is null");
} else {
// 能运行到这里，就可以使用单个文件上传的方法进行上传了。循环而已
System.out.println("filename>>>>>>>>>>" + file.getFileName());
System.out.println("file size>>>>>>>>>>" + file.getFileSize());
fileStr += "filename:::" + file.getFileName() + "file size:::"
+ file.getFileSize();
}
}
// 返回文本
try {
response.setHeader("ContentType", "text/html;charset=gbk");
PrintWriter out = response.getWriter();
out.write("<script>parent.callback('upload file success" + fileStr
+ "')</script>");
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
转自：http://hi.baidu.com/yanglu_168/blog/item/12c1382a4bc35028d42af1bd.html