1：在js文件中写入加密方法
var Comm = {
encode: function (text) {
if (text)
return new Base64().encode(text);
else
return text;
}
}
2：Handler类中返回文件地址：
如：string path = "/Files/审理意见书.doc";
3：在js方法中接收并跳转页面进行下载
function Download(){
$.post(' ',{action:' '},function(data){
if(path!=""){
window.location.href="/Download.aspx?P="+Comm.encode(path);
}
});
}
4：在Download.aspx也进行后台代码操作
a：首先写入解密方法
public static string Decrypt(string text) {
byte[] bytes = Convert.FromBase64String(text);
return Encoding.UTF8.GetString(bytes);
}
b：进行文件解析以及下载操作
protected void Page_Load(object sender, EventArgs e) {
string path = Decrypt(Parse.ToString(Request["p"]).Replace(" ", "+"));
string fileName = path.Substring(path.LastIndexOf('/') + 1);
var filePath = HttpContext.Current.Server.MapPath(path);
try {
//判断是否存在此文件
if (File.Exists(filePath)) {
FileStream io = File.Open(filePath, FileMode.Open);
long fileSize = io.Length;
byte[] filebit = new byte[(int) fileSize];
io.Read(filebit, 0, (int) fileSize);
Response.Clear();
fileName = HttpUtility.UrlEncode(fileName);
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment;fileName=" + fileName);
Response.BinaryWrite(filebit);
io.Dispose();
Response.Flush();
Response.End();
} else {
Response.Clear();
Response.Write("<script type="text/javascript" src="/Scripts/jquery-1.10.2.js"></script><script>$(function () {alert('文件不存在或已被删除', { icon: 0 }, function () { window.close(); }, function () { window.close(); });});</script>");
}
}catch (Exception ex) {
Response.Clear();
Response.Write("<script type="text/javascript" src="/Scripts/jquery-1.10.2.js"></script> <script>$(function () {alert('" + ex.Message + "', { icon: 0 }, function () { window.close(); }, function () { window.close(); });});</script>");
}
}