最近在项目中需要上传文件文件，之前一直都是
form提交的，尝试了一下AjaxForm，感觉还比较好用，写篇随笔mark下，供以后使用。
准备工作：
下载jquery-form.js
相关jar:
commons-fileupload-1.1.1.jar
commons-io-1.3.2.jar
在spring-servlet.xml进行multipartResolver配置:
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8" />
<property name="maxUploadSize" value="10485760000" />
<property name="maxInMemorySize" value="40960" />
</bean>
这个是必须的，否则不好用。
页面：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" session="false" %>
<html>
<!--
- Author(s): xieshuang
- Date: 2016-06-20 13:46:20
- Description:
-->
<head>
<title>Title</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<script src="<%=request.getContextPath()%>/common/nui/nui.js" type="text/javascript"></script>
<script src="<%=request.getContextPath()%>/common/nui/jquery/jquery-form.js" type="text/javascript"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/page4nui/master/projecttype/js/projecttype_import.js"></script>
<script type="text/javascript">
var contextPath="<%=request.getContextPath()%>";
</script>
</head>
<body>
<div id="test" class="nui-fit" style="padding-top:5px;min-300px;min-height:180px;">
<form id="fileUpload" method="post" enctype="multipart/form-data">
<div id="dataImport" style="100%;overflow:hidden;">
<table style="100%;table-layout:fixed;" class="nui-form-table" >
<tr>
<th align="right" style="25%" >选择文件：</th>
<td>
<input id="uploadFile" type="file" name="file" style="90%;"><font style="color:red;5%;"> *</font>
</td>
</tr>
</table>
</div>
<div style="100%;padding-top:10px;" align="center">
<input style="60px;" iconCls="icon-ok" value="确定" type="submit" />
<span style="display:inline-block;25px;"></span>
<a class="nui-button" iconCls="icon-cancel" style="60px;" onclick="cancel">取消</a>
</div>
</form>
</div>
</body>
</html>
核心js:
var msg;
$(function(){
nui.parse();
//ajax配置
var options = {
url: contextPath+"/webapp/cfProjectType/importExcel",
beforeSubmit: showRequest, //提交前处理
success: showResponse, //处理完成
resetForm: true,
dataType: 'json'
};
$('#fileUpload').submit(function() { //注意
$(this).ajaxSubmit(options);
return false;//防止dialog 自动关闭
});
})
//执行成功回调函数
function showResponse(e) {
nui.hideMessageBox(msg);
if (e.importFlag == true) {
CloseWindow("ok");
} else {
//对错误的一些处理
}
}
//提交前的一些校验
function showRequest(formData, jqForm, options){
if(formData[0].value=="" || formData[0].value==null){
nui.alert("请选择文件");
return false;
}
var fileName = $("#uploadFile").val().split("\").pop();
var strs = new Array(); //定义一数组
strs = fileName.split('.');
var suffix = strs [strs .length - 1];
if (suffix != 'xls' && suffix != 'xlsx') {
nui.alert("请选择excel文件！");
return false;
}
msg = nui.loading("Loading", "Please waiting");
}
java代码：
@SuppressWarnings("unchecked")
@RequestMapping("/webapp/cfProjectType/importExcel")
@ResponseBody
public Map<String, Object> importExcel(@RequestParam("file") MultipartFile[] files, HttpServletRequest request)
throws Throwable {
//long starttiem = System.currentTimeMillis();
InputStream fis;
fis = null;
File fileIn = null;
try {
for (MultipartFile myfile : files) {
if (!myfile.isEmpty()) {
String realPath = request.getSession().getServletContext().getRealPath("/export");
fileIn = new File(realPath);
//判断上传文件的保存目录是否存在
if (!fileIn.exists() && !fileIn.isDirectory()) {
//创建目录
fileIn.mkdirs(路径);
}
//将上传的文件复制到文件夹下
myfile.transferTo(new File(路径+文件名));
}
}
}
这里我之前用过另外一个方法FileUtils.copyInputStreamToFile(InputStream arg0, File arg1) 同样能将文件保存到路径下面