用commons-fileupload-1.2.jar加Ext.ux.UploadDialog.js做上传，结果文件是上传成功了，但遇到两个问题，求高人解决
1、上传附件名称为中文的会出现乱码。
2、虽然文件已经上传，但UploadDialog.js控件提示的是上传失败，在网上查了好久，都说要返回一个json给UploadDialog.js，但是我太菜鸟了，没搞明白怎么返回这个值。
贴出我的代码
调用的jsp代码：
<input type="file"> <input type="button" id="btnUplod" onclick="uploadSw()" value="上传附件">
js代码：
function uploadSw() {
debugger;
dialog = new Ext.ux.UploadDialog.Dialog({
title: '文件上传' ,
url:'demo2.jsp' ,
post_var_name:'files',
width : 450,
height : 300,
minWidth : 450,
minHeight : 300,
draggable : true ,
resizable : true ,
// autoCreate: true,
constraintoviewport: true ,
// permitted_extensions:[ 'JPG' , 'jpg' , 'jpeg' , 'JPEG' , 'GIF' ,
// 'gif' , 'png' , 'PNG' ],
modal: true ,
reset_on_hide: false ,
allow_close_on_upload: false , // 关闭上传窗口是否仍然上传文件
// upload_autostart: true //是否自动上传文件
upload_autostart: false
});
dialog.show();
dialog.on( 'uploadsuccess' , onUploadSuccess); // 定义上传成功回调函数
dialog.on( 'uploadfailed' , onUploadFailed); // 定义上传失败回调函数
dialog.on( 'uploaderror' , onUploadFailed); // 定义上传出错回调函数
dialog.on( 'uploadcomplete' , onUploadComplete); // 定义上传完成回调函数
}
// 文件上传成功后的回调函数
onUploadSuccess = function(dialog, filename, resp_data, record){
if(!resp_data.success){
alert(resp_data.message);// resp_data是json格式的数据
}
};
// 文件上传失败后的回调函数
onUploadFailed = function(dialog, filename, resp_data, record){
alert(resp_data.message);
};
// 文件上传完成后的回调函数
onUploadComplete = function(dialog){
dialog.hide();
};
jsp代码：
demo2.jsp
<%@ page language="java" contentType="text/html; charset=GB18030" pageEncoding="GB18030"%>
<%@ page import="org.apache.commons.fileupload.*"%>
<%@ page import="org.apache.commons.fileupload.servlet.*"%>
<%@ page import="org.apache.commons.fileupload.disk.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.io.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%
String uploadPath = "E:\\temp";
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (isMultipart == true) {
try {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);//得到所有的文件
Iterator<FileItem> itr = items.iterator();
while (itr.hasNext()) {//依次处理每个文件
FileItem item = (FileItem) itr.next();
String fileName = item.getName();//获得文件名，包括路径
if (fileName != null) {
File fullFile = new File(item.getName());
File savedFile = new File(uploadPath, fullFile.getName());
item.write(savedFile);
}
out.print("'success':true,'fileName':'"+fileName+"','message':'success!'");
}
out.print("upload succeed");
out.print("'success':true,'fileName':'fileName','message':'success!'");
response.getWriter().print("{success:true,message:'上传成功'}");
}
catch (Exception e) {
e.printStackTrace();
}
}
else {
//out.println("the enctype must be multipart/form-data");
}
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>File upload</title>
</head>
<body>
</body>
</html>
谢谢各位大侠了啊
