JQuery插件ajaxfileupload.js异步上传文件实例_jquery

function saveCInfo() {
var filename = document.getElementById("fileToUpload").value;
if (filename != "") {
$.ajaxFileUpload({
url: '../Order/OrderExec.ashx?oprMode=fileUpload' + "&filename=" + filename + "&billno=" + billno + "&companyname=" + companyname,
secureuri: false,
fileElementId: 'fileToUpload',//上传控件ID
//dataType: 'json',
error: function () { alert('error'); },
success: function (datax) {
if (datax != "") {
msgShow('系统提示', '上传成功!', 'info');
} else {
msgShow('系统提示', '上传失败!', 'info');
}
}
});
} else {
$.messager.alert('提示', '请选择上传文件', 'info');
}
}

public void FileUpload(HttpContext context)
{
try
{
context.Response.ContentType = "text/html";
string companyname = context.Request.Params["companyname"];
string billno = context.Request.Params["billno"];
string filename = context.Request.Params["filename"];
string name = companyname + "_" + billno + "_" + filename;
HttpFileCollection files = HttpContext.Current.Request.Files;
//指定上传文件在服务器上的保存路径
string savePath = context.Server.MapPath("~/upload/");
//检查服务器上是否存在这个物理路径，如果不存在则创建
if (!System.IO.Directory.Exists(savePath))
{
System.IO.Directory.CreateDirectory(savePath);
}
savePath = savePath + name;//上传文件路径
files[0].SaveAs(savePath);//保存文件
context.Response.Write(savePath);
}
catch (Exception ex)
{
context.Response.Write("FileUpload: " + ex.Message);
}

}