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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

2012-06-27 12:28 981 查看
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});
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