Uploadify在Struts2中的应用

来源：互联网发布：ubuntu 源码安装nginx 编辑：程序博客网时间：2024/05/01 21:13

步骤一：到官网上下载uploadify的JS文件.
Uploadify在线演示：在线Demo

Uploadify配置参数及接口文档：http://www.uploadify.com/documentation

Uploadify插件下载地址：http://www.uploadify.com/download

--------------------------------------------------------------------
步骤二：下载好uploadify压缩包文件后，解压文件包。在文件夹中找到以下五个文件，并添加到项目的对应路径中：
    jquery.uploadify.v2.1.0.js
   swfobject.js
   uploadify.swf
   uploadify.css
   cancel.png

步骤三：加入struts2的jar包、struts.xml ，在web.xml中加入struts2的FilterDispatcher过滤器。

----------------------------------------------------------------------------------------------------------------------------------

1、jsp代码：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
   <link href="css/default.css" rel="stylesheet" type="text/css" />
      <link href="css/uploadify.css" rel="stylesheet" type="text/css" />
   <script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
       <script type="text/javascript" src="js/swfobject.js"></script>
        <script type="text/javascript" src="js/jquery.uploadify.v2.1.0.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function() {
            $("#uploadify").uploadify({
                'uploader'       : 'uploadify.swf', //是组件自带的flash，用于打开选取本地文件的按钮
                'script'         : 'uploadAction!uploadFile.action',//处理上传的路径，这里使用Struts2是XXX.action
                'cancelImg'      : 'image/cancel.png',//取消上传文件的按钮图片，就是个叉叉
                'folder'         : 'uploads',//上传文件的目录
                'fileDataName'   : 'uploadify',//和input的name属性值保持一致就好，Struts2就能处理了
                'queueID'        : 'fileQueue',
                'auto'           : false,//是否选取文件后自动上传
                'multi'          : true,//是否支持多文件上传
                'simUploadLimit' : 2,//每次最大上传文件数
                'buttonText'     : 'BROWSE',//按钮上的文字
                'displayData'    : 'speed',//有speed和percentage两种，一个显示速度，一个显示完成百分比
                'fileDesc'       : '支持格式:jpg/gif/jpeg/png/bmp.', //如果配置了以下的'fileExt'属性，那么这个属性是必须的
                'fileExt'        : '*.jpg;*.gif;*.jpeg;*.png;*.bmp',//允许的格式
                'onComplete'     : function (event, queueID, fileObj, response, data){
                   $("#result").html(response);//显示上传成功结果
                  setInterval("showResult()",2000);//两秒后删除显示的上传成功结果
                }
            });
        });

        function showResult(){//删除显示的上传成功结果
          $("#result").html("");
        }
        function uploadFile(){//上传文件
         jQuery('#uploadify').uploadifyUpload();
        }
        function clearFile(){(){//清空所有上传队列
            jQuery('#uploadify').uploadifyClearQueue();
        }
        </script>

</head>

<body>
    <div id="fileQueue"></div>
        <input type="file" name="uploadify" id="uploadify" />
        <p>
        <a href="javascript:uploadFile()">开始上传</a> 
        <a href="javascript:clearFile()">取消所有上传</a>
        </p>
        <div id="result"></div>
</body>
</html>

----------------------------------------------------------------------------------------------------------------------------------

2、web.xml

<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

----------------------------------------------------------------------------------------------------------------------------------

3、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">

----------------------------------------------------------------------------------------------------------------------------------

4、action代码

package com.lijigou.action;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

@SuppressWarnings("serial")
public class UploadAction extends ActionSupport {

private File uploadify;

private String uploadifyFileName;

@SuppressWarnings("deprecation")
public String uploadFile() throws Exception {


  String extName = "";//扩展名

  String newFileName= "";//新文件名

  String nowTime = new SimpleDateFormat("yyyymmddHHmmss").format(new Date());//当前时间

  String savePath = ServletActionContext.getRequest().getRealPath("");

  savePath = savePath +"/uploads/";
  HttpServletResponse response = ServletActionContext.getResponse();
  response.setCharacterEncoding("utf-8");

  //获取扩展名
  if(uploadifyFileName.lastIndexOf(".")>=0){
   extName = uploadifyFileName.substring(uploadifyFileName.lastIndexOf("."));
  }
  newFileName = nowTime+extName;

  uploadify.renameTo(new File(savePath+newFileName));

  response.getWriter().print(uploadifyFileName+"上传成功");

       return null; //这里不需要页面转向，所以返回空就可以了

}

public File getUploadify() {
return uploadify;
}

public void setUploadify(File uploadify) {
this.uploadify = uploadify;
}

public String getUploadifyFileName() {
return uploadifyFileName;
}

public void setUploadifyFileName(String uploadifyFileName) {
this.uploadifyFileName = uploadifyFileName;
}

}

以上代码都通过测试，没有问题的。