struts2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：<inputtype="text" name="title" /><br>
  选择第一个文件：<inputtype="file" name="upload" /><br>
  选择第二个文件：<inputtype="file" name="upload" /><br>
  选择第三个文件：<inputtype="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:propertyvalue=" + title"/><br>
  第一个文件为：<imgsrc="<s:property value="'upload/' +uploadFileName[0]"/>"/><br>
  第二个文件为：<imgsrc="<s:property value="'upload/' +uploadFileName[1]"/>"/><br>
  第三个文件为：<imgsrc="<s:property value="'upload/' +uploadFileName[2]"/>"/><br>

</body>
</html>

三、动作类

package lee;

import com.opensymphony.xwork2.Action;

importorg.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 extendsActionSupport

{

privateString 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);

}

publicvoid setTitle(String title) {

this.title= title;

}

publicvoid setUpload(File[] upload) {

this.upload= upload;

}

publicvoid setUploadContentType(String[] uploadContentType) {

this.uploadContentType= uploadContentType;

}

publicvoid setUploadFileName(String[] uploadFileName) {

this.uploadFileName= uploadFileName;

}

publicString getTitle() {

return(this.title);

}

publicFile[] getUpload() {

return(this.upload);

}

publicString[] getUploadContentType() {

return(this.uploadContentType);

}

publicString[] 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

FileOutputStreamfos = new FileOutputStream(getSavePath() + "\\" +getUploadFileName()[i]);

FileInputStreamfis = 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>

<constantname="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">
    <paramname="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>