struts2使用数组同时上传多个文件
大家可能都知道struts2了，他的正式版发布的时间不常，所以本人也是刚刚学习了一下，如有不对的地方请指点，我在看struts2书时发现在以下这些代码，我觉得不错，所以拿出来和大家一起分享．
首先是上传的页面＂upload.jsp＂
<%# page language="java" contentType="text/html; charset=GBK"%>
<%#taglib prefix="s" uri="/struts-tags"%>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GBK" />
<title>使用List上传多个文件</title>
</head>
<body>
<s:fielderror/>
<form action="upload.action" method="post" enctype="multipart/form-data">
文件标题：<input type="text" name="title" /><br>
选择第一个文件：<input type="file" name="upload" /><br>
选择第二个文件：<input type="file" name="upload" /><br>
选择第三个文件：<input type="file" name="upload" /><br>
<input value="上传" type="submit" />
</form>
</body>
</html>
下面让我们来看一下对应的Action
package lee;
import com.opensymphony.xwork2.Action;
import org.apache.struts2.ServletActionContext;
import java.util.*;
import java.io.*;
import com.opensymphony.xwork2.ActionSupport;
/**
* #author yeeku.H.lee kongyeeku#163.com
* #version 1.0
* <br>Copyright (C), 2005-2008, yeeku.H.Lee
* <br>This program is protected by copyright laws.
* <br>Program Name:
* <br>Date:
*/
public class UploadAction extends ActionSupport
{
private String title;
private List<File> upload;
private List<String> uploadContentType;
private List<String> uploadFileName;
//接受依赖注入的属性
private String savePath;
//接受依赖注入的方法
public void setSavePath(String value)
{
this.savePath = value;
}
private String getSavePath() throws Exception
{
return ServletActionContext.getRequest().getRealPath(savePath);
}
public void setTitle(String title) {
this.title = title;
}
public void setUpload(List<File> upload) {
this.upload = upload;
}
public void setUploadContentType(List<String> uploadContentType) {
this.uploadContentType = uploadContentType;
}
public void setUploadFileName(List<String> uploadFileName) {
this.uploadFileName = uploadFileName;
}
public String getTitle() {
return (this.title);
}
public List<File> getUpload() {
return (this.upload);
}
public List<String> getUploadContentType() {
return (this.uploadContentType);
}
public List<String> getUploadFileName() {
return (this.uploadFileName);
}
#Override
public String execute() throws Exception
{
List<File> files = getUpload();
for (int i = 0 ; i < files.size() ; i++)
{
//以服务器的文件保存地址和原文件名建立上传文件输出流
FileOutputStream fos = new FileOutputStream(getSavePath() + "\\" + getUploadFileName().get(i));
FileInputStream fis = new FileInputStream(files.get(i));
byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer)) > 0)
{
fos.write(buffer , 0 , len);
}
}
return SUCCESS;
}
}
大家可以看见用ＳＴＲＵＴＳ２实现多文件上传是如此的方便．
下面让我们来看一下他的配置文件
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.custom.i18n.resources" value="globalMessages"/>
<constant name="struts.i18n.encoding" value="GBK"/>
<package name="upload" extends="struts-default">
<action name="upload" class="lee.UploadAction">
<interceptor-ref name="fileUpload">
<param name="allowedTypes">image/bmp,image/png,image/gif,image/jpeg,image/pjpeg</param>
</interceptor-ref>
<interceptor-ref name="defaultStack"/>
<param name="savePath">/upload</param>
<result name="input">/upload.jsp</result>
<result>/succ.jsp</result>
</action>
</package>
</struts>
值得一提的是文件上传的路径可以写在配置文件中，这样在以后如果像更换路径，只要改一下配置文件即可．就不必去改程序了，必境写好的程序在改来改去还是不好的．
以上是一个非常完整的代码段，大家可以复制下来，改动一个，即可使用．
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