extjs上传excel文件表单formpanel完整案例，首先弹出一个框，里面有一个extjs form表单,点击按钮可以选择文件，然后点击确定按钮提交表单到服务器,服务器接收代码以接收处理excel文件为例。
1.extjs客户端上传文件表单formpanel代码：
var uploadWin=new Ext.Window({
modal :true,
title:"批量导入记录",
width:400,
id:"uploadFileWin",
height:230,
bodyBorder:false,
layout:"fit",
bodyStyle:"background-color:#FFF",
items:[{
border:false,
id:"uploadForm",
xtype:"form",
fileUpload: true ,
style:"padding-top:50px;",
items:[{
xtype:'textfield',
inputType:'file',
id:"uploadFileTextF",
name:'uploadFile',
labelStyle : 'text-align:right;font-weight:bold',
allowBlank: false ,
fieldLabel:'选择文件*'
}]
}],
buttonAlign:"center",
buttons:[{
text:"确定",
handler:function(){
var form=Ext.getCmp("uploadForm").form;
var fileName=Ext.getCmp("uploadFileTextF").getValue();
fileName=fileName.split('.');
fileName=fileName[fileName.length-1];
if(fileName!="xls"&&fileName!="xlsx"){
Ext.Msg.alert("系统提示", "必须选择Microsoft Office Excel 工作表！");
return false;
}
if (form.isValid()){
form.submit({
method:'post',
url:'/doAction?Action=importRecord', // 根据自己系统的需要调用程序处理上传文件 24
waitMsg:'文件上传中...',
success: function (form,action) {
//alert(action.msg);
Ext.Msg.alert("系统提示", action.result.msg);
mygrid.store.reload();
Ext.getCmp("uploadFileWin").close();
},
failure: function (form,action) {
Ext.Msg.alert("系统提示", action.result.msg);
}
});
} else {
Ext.Msg.alert("系统提示","请选择文件后再上传！");
}
}
}]
});
uploadWin.show();2.java接收文件servlet代码：
int maxPostSize = 1000 * 1024 * 1024;
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload servletFileUpload = new ServletFileUpload(factory);
servletFileUpload.setSizeMax(maxPostSize);
List fileItems = servletFileUpload.parseRequest(req);
Iterator iter = fileItems.iterator();
JSONObject returnJson=new JSONObject();
int countRecord=0;
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (!item.isFormField()) {// 是文件
Workbook book = Workbook.getWorkbook( item.getInputStream()) ;
Sheet sheet = book.getSheet(0);
int rows = sheet.getRows();
String fieldsStr="sname,pname,idcardNo,traincardno,serid";
String returnStr="";
for(int i = 0; i < rows; i++) {
Cell [] cell = sheet.getRow(i);
String valuesStr="";
countRecord++;
for(int j=0; j<cell.length; j++) {
if(!sheet.getCell(0, i).getContents().equals("")){
if(i>=1){
valuesStr+="'"+sheet.getCell(j, i).getContents()+"'";
}
}
}
}
}
book.close();
returnJson.put("success", true);
returnJson.put("msg", "导入成功，共上传"+countRecord+"条记录。");
}else{
returnJson.put("success", false);
returnJson.put("msg", "请上传excel文件！");
}
}
out.print(returnJson.toString());