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基于jquery ajax 无刷新 文件批量下传插件 GooUploader整合struts2实现下传

分类: IT文章 • 2022-12-06 00:33:43
基于jquery ajax 无刷新 文件批量上传插件 GooUploader整合struts2实现上传

今天下午安排了一个任务：要实现多文件上传，也就是批量上传文件。相信单个文件上传很多人都实现过，批量上传也有不少人实现过，我之前批量上传的做法是利用js或jquery来动态添加删除<input type="file" name="file" />的。感觉在用户体验上也不是很好，于是在网上google一把，发现大家常用的是swfupload.swf这个插件，网上也有类似的例子，但也发现了GooUploader这个插件，它是基于swfupload.swf，也就是底层封装了改插件，同时可以实现无刷新。于是在网上google一把，下了下来。下下来的可以直接放在tomcat运行了，不过它后台是基于servlet实现的。代码如下：

通过反编译工具查看的，它的底层是基于apache的两个有名的常用的组件：commons-fileupload-1.2.1和commons-io-1.4.jar实现的。

 

package servlet;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.util.Streams;

public class UploadFileServlet extends HttpServlet
  implements Servlet
{
  File tmpDir = null;
  File saveDir = null;

  protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException
  {
    doPost(request, response);
  }

  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    try {
      request.setCharacterEncoding("UTF-8");
      if (ServletFileUpload.isMultipartContent(request)) {
        DiskFileItemFactory dff = new DiskFileItemFactory();
        dff.setRepository(this.tmpDir);
        dff.setSizeThreshold(1024000);
        ServletFileUpload sfu = new ServletFileUpload(dff);
        sfu.setFileSizeMax(109999999L);
        sfu.setSizeMax(999999999L);
        FileItemIterator fii = sfu.getItemIterator(request);
        while (fii.hasNext()) {
          FileItemStream fis = fii.next();
          if ((!fis.isFormField()) && (fis.getName().length() > 0)) {
            System.out.println(fis.getName());
            String fileName = fis.getName();
            BufferedInputStream in = new BufferedInputStream(fis.openStream());
            BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File("f:\\nokia\\" + fileName)));
            Streams.copy(in, out, true);
          }
        }
        response.getWriter().println("File upload successfully!!!");
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public void init()
    throws ServletException
  {
    super.init();
    String tmpPath = "f:\\nokia\\";
    String savePath = "f:\\nokia\\";
    this.tmpDir = new File(tmpPath);
    this.saveDir = new File(savePath);
    if (!this.tmpDir.isDirectory())
      this.tmpDir.mkdir();
    if (!this.saveDir.isDirectory())
      this.saveDir.mkdir();
    System.out.print("UploadFileServlet init");
  }
}

 主要就是这个servlet就实现了。由于我的项目是用ssh2，于是就考虑用struts2来实现，废话少说了，

先看效果图：
基于jquery ajax 无刷新 文件批量下传插件 GooUploader整合struts2实现下传

主要代码如下：

 

index.jsp

<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
 <title>文件上传控件GooUploader</title>
<link rel="stylesheet" type="text/css" href="codebase/GooUploader.css"/>
<script  type="text/javascript" src="codebase/jquery-1.3.2.min.js"></script>
<script  type="text/javascript" src="codebase/GooUploader.js"></script>
<script type="text/javascript" src="codebase/swfupload/swfupload.js"></script>
<script type="text/javascript">
var demo;
var  post_params = {session_id:"f1423rwe543t4wrtwerwe"};
var property={
	width:300,
	height:200,
	multiple:true,
	//file_post_name : "Filedata",
    //file_types:"*.jpg;*.gif",
  //  file_types_description: "Web Image Files",
   // post_params:post_params,
    btn_add_text:"添加",
    btn_up_text:"上传",
    btn_cancel_text:"放弃",
    btn_clean_text:"清空",
    op_del_text:"单项删除",
    op_up_text:"单项上传",
    op_fail_text:"上传失败",
    op_ok_text:"上传成功",
    op_no_text:"取消上传",
	upload_url:"uploadImage.action",
	flash_url :"codebase/swfupload.swf"
};
$(document).ready(function(){
  demo=$.createGooUploader($("#demo"),property)
});
</script>
</head>

<body>
<br/>

<br/>
<div id="demo"></div>
</body>
</html>

  注意： * file_post_name : "Filedata"该参数设置了POST信息中上传文件的name值（类似传统Form中设置了<input type="file" name="uploadImg"/>的name属性）。
 * 注意：在Linux下面此参数设置无效，接收的name总为Filedata，因此为了保证最大的兼容性，建议此参数使用默认值。查到这个信息我花了3个小时搜索，最后在文档中找到了，这是用struts2实现的关键。

 

UploadAction.java

package com.test;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

/**
 * @author fish
 */
public class UploadAction extends ActionSupport
{
	private List<File> Filedata; // 默认的客户端文件对象,命名不符合java规范fileData
	private List<String> FiledataFileName; // 客户端文件名
	private List<String> imageContentType; // 客户端文件名类型

	public List<File> getFiledata()
	{
		return Filedata;
	}

	public void setFiledata(List<File> filedata)
	{
		Filedata = filedata;
	}

	public List<String> getFiledataFileName()
	{
		return FiledataFileName;
	}

	public void setFiledataFileName(List<String> filedataFileName)
	{
		FiledataFileName = filedataFileName;
	}

	public List<String> getImageContentType()
	{
		return imageContentType;
	}

	public void setImageContentType(List<String> imageContentType)
	{
		this.imageContentType = imageContentType;
	}

	@Override
	public String execute() throws Exception
	{
		if (Filedata == null || Filedata.size() == 0)
		{
			return null;
		}
		for (int i = 0; i < Filedata.size(); ++i)
		{

			String fileName = FiledataFileName.get(i); // 文件真名

			long length = Filedata.get(i).length(); // 文件的真实大小
			long time = System.currentTimeMillis();

			// 将上传的文件保存到服务器的硬盘上

			InputStream is = new  BufferedInputStream(new FileInputStream(Filedata.get(i)));

			HttpServletRequest request = ServletActionContext.getRequest(); // 获得ServletRequest对象
			//request.getRealPath("/")已不建议使用，改为this.getServletContext().getRealPath("/")
			System.out.println("path:"+ServletActionContext.getServletContext().getRealPath("/"));
			File tempFile = new File(ServletActionContext.getServletContext().getRealPath("/uploadimages")+File.separator+fileName);

			FileUtils.forceMkdir(tempFile.getParentFile()); // 创建上传文件所在的父目录

			OutputStream os = new BufferedOutputStream( new FileOutputStream(tempFile));

			int len = 0;
			byte[] buffer = new byte[500];

			while (-1 != (len = is.read(buffer)))
			{
				os.write(buffer, 0, len);
				
			}
			is.close();
			os.flush();
			os.close();
		}
		return null;
	}
}
 

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.multipart.maxSize" value="100000000000"></constant>
	<package name="upload"  extends="struts-default">
		<action name="uploadImage" class="com.test.UploadAction"></action>
	</package>

</struts>
 

这样就搞定了，说难也不难，说易也不易，关键是要找到类似传统Form中设置了<input type="file" name="uploadImg"/>的name属性，就可以了。若想用servlet实现，直接用源码的例子就可以了。

 

动态传参：

	post_params={value:value};
	demo.$swfUpload.setPostParams(post_params);
 
1 楼 zhuchao_ko 2011-12-19  
基于jquery ajax 无刷新 文件批量下传插件 GooUploader整合struts2实现下传
2 楼 liuzidong 2011-12-30  
基于jquery ajax 无刷新 文件批量下传插件 GooUploader整合struts2实现下传
3 楼 it_xiaozhuai 2012-08-09  
牛，先谢谢！ 跑通了！不过，这个js 太难找了！汗！！呵呵...

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