Struts2多文件的上传

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Struts2Test.java源代码：

package com.test;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;@SuppressWarnings("serial")public class Struts2Test extends ActionSupport{private String[] picFileName;private File[] pic;public String[] getPicFileName() {return picFileName;}public void setPicFileName(String[] picFileName) {this.picFileName = picFileName;}public File[] getPic() {return pic;}public void setPic(File[] pic) {this.pic = pic;}public String upload() throws IOException {for(int i=0;i<pic.length;i++){File upPic=new File(ServletActionContext.getServletContext().getRealPath("upload"),picFileName[i]);upPic.getParentFile().mkdirs();FileInputStream in=null;FileOutputStream out=null;in=new FileInputStream(pic[i]);out=new FileOutputStream(upPic);byte[] byt=new byte[1024];int len=0;while((len=in.read(byt))!=-1){out.write(byt, 0, len);}}return SUCCESS;}}

struts.xml源代码：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd"><struts><constant name="struts.devMode" value="true" /><package name="default" extends="struts-default" namespace="/"><action name="hello" class="com.test.Struts2Test" ><result name="success">/success.jsp</result></action></package> </struts>

web.xml源代码：

<?xml version="1.0" encoding="UTF-8"?><web-app id="WebApp_9" 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">  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>    <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>  </web-app>

index.jsp源代码：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><%@taglib prefix="s" uri="/struts-tags"%><html>  <head>    <base href="<%=basePath%>">    <title>My JSP 'index.jsp' starting page</title>  </head>  <body>  <s:form action="hello!upload" enctype="multipart/form-data" method="post">  <!-- enctype="multipart/form-data"   此处是一个很容易忽略的盲点 -->  <s:file name="pic" label="上传" />  <s:file name="pic" label="上传"/>  <s:file name="pic" label="上传"/>  <s:submit value="提交"/>  </s:form>  </body></html>

success.jsp源代码：

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><html>  <head>    <base href="<%=basePath%>">    <title>SUCCESS</title>  </head>  <body>    SUCCESS! <br>  </body></html>

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