struts2多文件上传--使用数组方式

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Struts Apache JSP HTML XML

一、上传页面：

<%@ 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>使用数组上传多个文件</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>

二、上传成功页面：

<%@ page language="java" contentType="text/html; charset=GBK"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>上传成功</title>
</head>
<body>
上传成功!<br>
  文件标题:<s:property value=" + title"/><br>
  第一个文件为：<img src="<s:property value="'upload/' + uploadFileName[0]"/>"/><br>
  第二个文件为：<img src="<s:property value="'upload/' + uploadFileName[1]"/>"/><br>
  第三个文件为：<img src="<s:property value="'upload/' + uploadFileName[2]"/>"/><br>

</body>
</html>

三、动作类

package lee;
import com.opensymphony.xwork2.Action;
import org.apache.struts2.ServletActionContext;
import java.io.File;
import java.io.*;
import com.opensymphony.xwork2.ActionSupport;
/**
 * @author  yeeku.H.lee kongyeeku@163.com
 * @version  1.0
 * Copyright (C), 2005-2008, yeeku.H.Lee
 * This program is protected by copyright laws.
 * Program Name:
 * Date: 
 */
public class UploadAction extends ActionSupport
{
	private String title;
    private File[] upload;
    private String[] uploadContentType;
    private 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(File[] upload) {
		this.upload = upload; 
	}
	public void setUploadContentType(String[] uploadContentType) {
		this.uploadContentType = uploadContentType; 
	}
	public void setUploadFileName(String[] uploadFileName) {
		this.uploadFileName = uploadFileName; 
	}
	public String getTitle() {
		return (this.title); 
	}
	public File[] getUpload() {
		return (this.upload); 
	}
	public String[] getUploadContentType() {
		return (this.uploadContentType); 
	}
	public String[] getUploadFileName() {
		return (this.uploadFileName); 
	}


	@Override
    public String execute() throws Exception
	{
		File[] files = getUpload();
		for (int i = 0 ; i < files.length ; 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()[i]);
			FileInputStream fis = new FileInputStream(files[i]);
			byte[] buffer = new byte[1024];
			int len = 0;
			while ((len = fis.read(buffer)) > 0)
			{
				fos.write(buffer , 0 , len);
			}
		}
         fos.close();// 注意：流应当关闭。


         fis.close();
        return SUCCESS;
    }
}

四、struts.xml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>

<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>

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