第01步：配置web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter> <filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
第02步：编写action类
package com.self.action; import java.io.File; import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionContext; /**文件上传**/
public class FileUpload {
private File[] image;//得到上传的文件
private String[] imageFileName;//获取上传文件的名称，命名规则：页面属性名+FileName
private String[] imageContentType;//得到上传文件的类型 public FileUpload() {
} /**上传方法**/
public String uploadFile(){
try {
String realPath=ServletActionContext.getServletContext().getRealPath("/images");
System.out.println("工程路径（/images路径,文件保存路径）："+realPath);
if(image!=null){
System.out.println("已经获得上传文件！");
File parentFile=new File(realPath);//指定文件保存路径
if(!parentFile.exists()){//保存路径不存在，则创建
parentFile.mkdirs();
}
for(int i=0;i<image.length;i++){
File saveFile=new File(parentFile,imageFileName[i]);//parentFile：保存路径，imageFileName：保存文件名
FileUtils.copyFile(image[i], saveFile);//将上传的image复制到saveFile中
}
ActionContext.getContext().put("message", "保存成功！");
}
} catch (Exception e) {
e.printStackTrace();
}
return "tsuccess";
} public File[] getImage() {
return image;
} public void setImage(File[] image) {
this.image = image;
} public String[] getImageFileName() {
return imageFileName;
} public void setImageFileName(String[] imageFileName) {
this.imageFileName = imageFileName;
} public String[] getImageContentType() {
return imageContentType;
} public void setImageContentType(String[] imageContentType) {
this.imageContentType = imageContentType;
}
}
第03步：配置struts.xml
<?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.action.extension" value="do,action"/> <package name="transform" namespace="/" extends="struts-default">
<action name="list_*" class="com.self.action.FileUpload" method="{1}">
<result name="tsuccess">
/outdata.jsp
</result>
</action>
</package>
</struts>
第04步：编写界面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<body>
<form method="post" action="list_uploadFile.action" enctype="multipart/form-data">
文件1：<input type="file" name="image">
文件2：<input type="file" name="image">
文件3：<input type="file" name="image">
<BR>
<input type="submit" value="上传文件">
</form>
</body>
</html>
第05步：注意事项
注意事项请参考：struts文件上传（单文件）
第06步：导入包
