利用plupload插件实现多文件上传，实现图片：
在jsp写入js代码：
z<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="s" uri="/struts-tags"%> <html> <head><title>test</title> <style type="text/css">@import url(plupload/js/jquery.plupload.queue/css/jquery.plupload.queue.css);</style> <script src="js/jquery-1.6.2.min.js" type="text/javascript"></script> <script type="text/javascript" src="plupload/js/plupload.full.js"></script> <script type="text/javascript" src="plupload/js/jquery.plupload.queue/jquery.plupload.queue.js"></script> <script type="text/javascript" src="plupload/js/i18n/cn.js"></script> <script type="text/javascript"> // Convert divs to queue widgets when the DOM is ready $(function() { $("#uploader").pluploadQueue({ // General settings runtimes : 'gears,flash,silverlight,browserplus,html5,html4', url : 'FileUpload.action', max_file_size : '10mb', unique_names : true, multiple_queues : true, chunk_size: '2mb', // Specify what files to browse for filters : [ {title : "xls, xlsx文档", extensions : "xls,xlsx"} ], // Flash settings flash_swf_url : 'plupload/js/plupload.flash.swf', // Silverlight settings silverlight_xap_url : 'plupload/js/plupload.silverlight.xap' }); $('form').submit(function(e) { var uploader = $('#uploader').pluploadQueue(); if (uploader.files.length > 0) { // When all files are uploaded submit form uploader.bind('StateChanged', function() { if (uploader.files.length === (uploader.total.uploaded + uploader.total.failed)) { $('form')[0].submit(); } }); uploader.start(); } else { alert('请先上传数据文件.'); } return false; }); }); </script> </head> <body> <div> <div style=" 750px; margin: 0px auto"> <form id="formId" action="Submit1.action" method="post"> <div id="uploader"> <p>您的浏览器未安装 Flash, Silverlight, Gears, BrowserPlus 或者支持 HTML5 .</p> </div> <input type="submit" value="完成"/> </form> </div> </div> </body> </html>
注：js，css引用路径需修改为自己项目路径。
FileAction文件上传类：
package com.action; import java.io.*; import java.util.List; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class FileAction extends ActionSupport { /** * */ private static final long serialVersionUID = 1L; private static final int BUFFER_SIZE = 2 * 1024; private int id = -1; private File upload; private String name; private List<String> names; private String uploadFileName; //文件类型 private String uploadContentType; //大文件上传 分块chul private int chunk; private int chunks; private String result; private void copy(File src, File dst) { InputStream in = null; OutputStream out = null; try { if (dst.exists()) { out = new BufferedOutputStream(new FileOutputStream(dst, true), BUFFER_SIZE); } else { out = new BufferedOutputStream(new FileOutputStream(dst), BUFFER_SIZE); } in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE); byte[] buffer = new byte[BUFFER_SIZE]; int len = 0; while ((len = in.read(buffer)) > 0) { out.write(buffer, 0, len); } } catch (Exception e) { e.printStackTrace(); } finally { if (null != in) { try { in.close(); } catch (IOException e) { e.printStackTrace(); } } if (null != out) { try { out.close(); } catch (IOException e) { e.printStackTrace(); } } } } public String upload() throws Exception { String dstPath = ServletActionContext.getServletContext().getRealPath( "resources\files") + "\" + this.getName(); File dstFile = new File(dstPath); // 文件已存在（上传了同名的文件） if (chunk == 0 && dstFile.exists()) { dstFile.delete(); dstFile = new File(dstPath); } copy(this.upload, dstFile); System.out.println("上传文件:" + uploadFileName + " 临时文件名：" + uploadContentType + " " + chunk + " " + chunks); if (chunk == chunks - 1) { // 完成一整个文件; } return "success"; } public String submit() { String filePath = ServletActionContext.getServletContext().getRealPath( "resources\files"); System.out.println("保存文件路径： " + filePath); HttpServletRequest request = ServletActionContext.getRequest(); result = ""; int count = Integer.parseInt(request.getParameter("uploader_count")); for (int i = 0; i < count; i++) { uploadFileName = request.getParameter("uploader_" + i + "_name"); name = request.getParameter("uploader_" + i + "_tmpname"); System.out.println(uploadFileName + " " + name); try { //do something with file; result += uploadFileName + "导入完成. <br />"; } catch(Exception e) { result += uploadFileName + "导入失败:" + e.getMessage() + ". <br />"; e.printStackTrace(); } } return "success"; } public void setId(int id) { this.id = id; } public int getId() { return id; } public void setName(String name) { this.name = name; } public String getName() { return name; } public void setNames(List<String> names) { this.names = names; } public List<String> getNames() { return names; } public File getUpload() { return upload; } public void setUpload(File upload) { this.upload = upload; } public String getUploadFileName() { return uploadFileName; } public void setUploadFileName(String uploadFileName) { this.uploadFileName = uploadFileName; } public String getUploadContentType() { return uploadContentType; } public void setUploadContentType(String uploadContentType) { this.uploadContentType = uploadContentType; } public int getChunk() { return chunk; } public void setChunk(int chunk) { this.chunk = chunk; } public int getChunks() { return chunks; } public void setChunks(int chunks) { this.chunks = chunks; } public void setResult(String result) { this.result = result; } public String getResult() { return result; } }
struts.xml代码：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<constant name="struts.multipart.maxSize" value="1073741824" />
<!-- 设置Web应用的默认编码集为gbk -->
<constant name="struts.i18n.encoding" value="utf-8"/>
<!-- 设置Web应用的默认Locale为zh_CN -->
<constant name="struts.locale" value="zh_CN" />
<!-- 设置Struts2应用的国际化资源文件，多个文件中间可用逗号分隔 -->
<constant name="struts.custom.i18n.resources" value="messageResource"/>
<!-- 设置Struts2应用是否处于开发模式，通常在开发调试阶段设为true,正式上线后可设为false -->
<constant name="struts.devMode" value="true" />
<!-- 设置Struts2的默认主题为simple -->
<constant name="struts.ui.theme" value="simple" />
<package name="struts" extends="struts-default" namespace="/">
<action name="FileUpload" class="com.action.FileAction" method="upload">
<result name="success">/result.jsp</result>
</action>
<action name ="Submit1" class ="com.action.FileAction" method="submit">
<param name="savePath">/resources/files</param>
<result name ="success">/result.jsp</result>
</action >
</package>
</struts>
欢迎大家提出问题，共同讨论。