多檔案上傳，使用js對檔案進行校驗，包括檔案單個大小，格式，總的檔案大小，檔案是否為空等
阿新 • • 發佈：2019-01-13
<%@ 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 'upload.jsp' starting page</title>
<script type="text/javascript" src="js/jquery-2.1.1.js"></script>
<script type="text/javascript">
{
document.getElementById('attach').innerText = "繼續新增附件";
tb = document.getElementById('attAchments');
newRow = tb.insertRow();
newRow.insertCell().innerHTML = "<input name='file' size='50' type='file' id=file"+num+"> <input type='button' value='刪除' onclick='delFile(this.parentElement.parentElement.rowIndex)'> <label id=p"+num+"></label>";
num ++;
{
totalSizeArray[index]=0;
document.getElementById('attAchments').deleteRow(index);
tb.rows.length > 0?document.getElementById('attach').innerText = "繼續新增附件":document.getElementById('attach').innerText = "新增附件";
}
$(document).ready(function(){
alert("當前沒有可上傳的檔案");
return false;
}else{
for(var i=0;i<document.form1.elements.length-1;i++)
{
alert("當前表單不能有空項");
document.form1.elements[i].focus();
return false;
}
var totalSize=0;
for(x in totalSizeArray){
totalSize=totalSize+totalSizeArray[x];
}
if(totalSize>1024*10){
alert("檔案總大小為："+totalSize/1024+"MB,超過了10MB,請重新選擇檔案！");
return false;
}else{
$("#form1").submit();
}
}
});
});
$(document).ready(function () {
$("#attAchments").delegate("input[type='file']","change",function(){
var filepath = $(this).val();
var fileId=$(this).attr("id");
var countNum=fileId.substring(4,fileId.length);
var count="p"+countNum;
var extStart = filepath.lastIndexOf(".");
alert("不能上傳字尾名為.txt、.rar、.zip型別的檔案！");
var obj = document.getElementById(fileId) ;
obj.outerHTML=obj.outerHTML;
$("#"+count).text("");
return false;
} else { $("#"+count).text(filepath);}
var fileSize=0;
fileSize=this.files[0].size;
var size=fileSize/1024;
alert("單個檔案大小不能超過2M,請重新選擇檔案！");
var obj = document.getElementById(fileId) ;
obj.outerHTML=obj.outerHTML;
$("#"+count).text("");
}else{
totalSizeArray[countNum]=size;
size=$("#"+count).text()+"\t\t\t\t"+size;
$("#"+count).text(size+"KB");
}
});
});
</script>
<body>
<form id="form1" name="form1" method="POST" enctype="multipart/form-data" action="uploadServlet">
<table id="attAchments">
</table>
</form>
<a id="attach" onclick="AddAttachments();" href="javascript:;" name="attach">新增附件</a>
<input type="button" id="btnSend" value=" 上傳 "/>
</body>
</html>
<%
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 'upload.jsp' starting page</title>
<script type="text/javascript" src="js/jquery-2.1.1.js"></script>
<script type="text/javascript">
var totalSizeArray={};
//新增附件
function AddAttachments(){
document.getElementById('attach').innerText = "繼續新增附件";
tb = document.getElementById('attAchments');
newRow = tb.insertRow();
newRow.insertCell().innerHTML = "<input name='file' size='50' type='file' id=file"+num+"> <input type='button' value='刪除' onclick='delFile(this.parentElement.parentElement.rowIndex)'> <label id=p"+num+"></label>";
num ++;
}
//刪除附件類容
function delFile(index){
totalSizeArray[index]=0;
document.getElementById('attAchments').deleteRow(index);
tb.rows.length > 0?document.getElementById('attach').innerText = "繼續新增附件":document.getElementById('attach').innerText = "新增附件";
}
$(document).ready(function(){
var fileLength=$("input[type='file']").length;
//判斷是否有上傳的檔案
if(fileLength==0){alert("當前沒有可上傳的檔案");
return false;
}else{
for(var i=0;i<document.form1.elements.length-1;i++)
{
//判斷文控制元件間內容是否為空
if(document.form1.elements[i].value==""){
alert("當前表單不能有空項");
document.form1.elements[i].focus();
return false;
}
}
//判斷檔案總大小是否大於10M
var totalSize=0;
for(x in totalSizeArray){
totalSize=totalSize+totalSizeArray[x];
}
if(totalSize>1024*10){
alert("檔案總大小為："+totalSize/1024+"MB,超過了10MB,請重新選擇檔案！");
return false;
}else{
$("#form1").submit();
}
}
});
});
$(document).ready(function () {
$("#attAchments").delegate("input[type='file']","change",function(){
var filepath = $(this).val();
var fileId=$(this).attr("id");
var countNum=fileId.substring(4,fileId.length);
var count="p"+countNum;
var extStart = filepath.lastIndexOf(".");
var ext = filepath.substring(extStart, filepath.length).toUpperCase();
//判斷檔案型別
if (ext==".ZIP"||ext==".RAR" ||ext==".TXT") {alert("不能上傳字尾名為.txt、.rar、.zip型別的檔案！");
var obj = document.getElementById(fileId) ;
obj.outerHTML=obj.outerHTML;
$("#"+count).text("");
return false;
} else { $("#"+count).text(filepath);}
var fileSize=0;
fileSize=this.files[0].size;
var size=fileSize/1024;
size=Math.round(size);
//判斷單個檔案是否大於2M
if(size>1024*2){alert("單個檔案大小不能超過2M,請重新選擇檔案！");
var obj = document.getElementById(fileId) ;
obj.outerHTML=obj.outerHTML;
$("#"+count).text("");
}else{
totalSizeArray[countNum]=size;
size=$("#"+count).text()+"\t\t\t\t"+size;
$("#"+count).text(size+"KB");
}
});
});
</script>
<body>
<form id="form1" name="form1" method="POST" enctype="multipart/form-data" action="uploadServlet">
<table id="attAchments">
</table>
</form>
<a id="attach" onclick="AddAttachments();" href="javascript:;" name="attach">新增附件</a>
<input type="button" id="btnSend" value=" 上傳 "/>
</body>
</html>