Struts2中多文件上传

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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();  
FileOutputStream fos = null;  
FileInputStream fis = null;    
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     
fos = new FileOutputStream(getSavePath() + "\\" + getUploadFileName()[i]);     
fis = new FileInputStream(files[i]);     
byte[] buffer = new byte[1024];     i
nt len = 0;     
while ((len = fis.read(buffer)) > 0)     {      
fos.write(buffer , 0 , len);     
}    
}           
fos.close();// 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>

<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>

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