使用 jquery 的上传文件插件 uploadify 3.1 配合 java 来做一个简单的文件上次功能。并且在界面上有radio 的选择内容也要上传

本文链接：https://blog.youkuaiyun.com/remote_roamer/article/details/7695717

本文介绍如何使用uploadify 3.1插件结合Java实现文件上传功能，并同步上传表单中的radio选项值。通过示例代码展示了前端配置及后端处理过程。

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使用 jquery 的上传文件插件 uploadify 3.1 配合 java 来做一个简单的文件上次功能。并且在界面上有radio 的选择内容也要上传

uploadify 插件的下载和文档地址点击打开链接

1. jsp的内容

<%@ 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" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<base href="<%=basePath%>">  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>兑换卷查询系统</title>
<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.21.custom.css" rel="stylesheet" />
<link href="css/uploadify.css" rel="stylesheet" type="text/css" />

<script type="text/javascript" src="js/jquery-1.7.2.min.js"></script>
<script type="text/javascript" src="js/jquery.uploadify-3.1.min.js"></script>


</head>

<style>
</style>

<body>
<form>
	<div id="fileQueue"></div>
		<h4>提货券类型</h4>
				<input type="radio" id="typeCode" name="typeCode" value="108" checked="">108</input>
				<input type="radio" id="typeCode" name="typeCode" value="138">138</input>
		</p>		
        <input type="file" name="file_upload" id="file_upload" />
        <p>
        <a href="javascript:$('#file_upload').uploadify('upload','*')">开始上传</a>
        <script>
        	$(function() {
	        	var typeCode =""; 
	        	
		    	$("#file_upload").uploadify({
		    		'buttonText'    :	'选择文件',
		    		'multi'    		: 	false,
		            'swf'      		: 	'html/uploadify.swf',
		            'uploader' 		: 	'../servlet/Upload',
		            'auto' 			: 	false,
		            'onUploadStart' : 	function(file) {
			        	 
			        	//校验   
		                
	                    $(":input[name='typeCode']").each(function(){	                    
	                     		if ( $(this).attr("checked"))
	                     			{
	                     				typeCode = ($(this).val());
	                     			}
	                     });
			        	$("#file_upload").uploadify("settings", "formData", {'typeCode':typeCode});
			        }
		    	});
			});	
        </script>
        
        </p>
        <!-- <a href="javascript:jQuery('#uploadify').uploadifyClearQueue()">取消所有上传</a> -->
        </p>
</form> 	
</body>
</html>

2.java服务器端的程序

package com.alcor.inquire.servlet;

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.UUID;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.apache.tomcat.util.http.fileupload.FileItem;
import org.apache.tomcat.util.http.fileupload.FileUploadException;
import org.apache.tomcat.util.http.fileupload.disk.DiskFileItemFactory;
import org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload;


public class ImportData extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 3387249060639006401L;
	
	private static final Logger logger = Logger.getLogger(ImportData.class);
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		logger.debug("doGet(HttpServletRequest request, HttpServletResponse response)");
		String typeCode =""; //兑换卷类型
		
		String savePath = this.getServletConfig().getServletContext().getRealPath("");
        savePath = savePath + "/uploads/";
        File f1 = new File(savePath);
        System.out.println(savePath);
        if (!f1.exists()) {
            f1.mkdirs();
        }
        DiskFileItemFactory fac = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(fac);
        upload.setHeaderEncoding("utf-8");
        List<FileItem> fileList = null;
        try {
            fileList = upload.parseRequest(request);
        } catch (FileUploadException ex) {
            return;
        }
        Iterator<FileItem> it = fileList.iterator();
        String name = "";
        String extName = "";
        while (it.hasNext()) {
            FileItem item = it.next();
            logger.debug(item.getContentType());
            if (!item.isFormField()) {
                name = item.getName();
                long size = item.getSize();
                String type = item.getContentType();
                logger.debug("文件名："+name+",大小："+size + ",类型：" + type);
                if (name == null || name.trim().equals("")) {
                    continue;
                }
                //扩展名格式：  
                if (name.lastIndexOf(".") >= 0) {
                    extName = name.substring(name.lastIndexOf("."));
                }
                File file = null;
                do {
                    //生成文件名：
                    name = UUID.randomUUID().toString();
                    file = new File(savePath + name + extName);
                } while (file.exists());
                File saveFile = new File(savePath + name + extName);
                try {
                    item.write(saveFile);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }else
            {
            	//获得简单域的名字  
                String fieldName = item.getFieldName(); 
                if (fieldName.equalsIgnoreCase("typeCode"))
                {
                	//获得简单域的值  
                	String fieldValue = item.getString("UTF-8"); 
                	typeCode = fieldValue;
                	logger.debug("兑换卷类型是："+typeCode);
                }
            	
            }
        }
        response.getWriter().print(name + extName);

	}

	// Process the HTTP Post request
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}
}

3.jsp代码中如下代码是关键，否则服务端无法获取radio的值

$("#file_upload").uploadify("settings", "formData", {'typeCode':typeCode});

使用 jquery 的 上传文件插件 uploadify 3.1 配合 java 来做一个简单的文件上次功能。并且在界面上有radio 的选择内容也要上传

使用 jquery 的上传文件插件 uploadify 3.1 配合 java 来做一个简单的文件上次功能。并且在界面上有radio 的选择内容也要上传