最近因为工作中遇到一个需求，需要做了一个批量导入功能，但长时间运行没个反馈状态，很容易让人看了心急，产生各种臆想！为了解决心里障碍，写了这么个功能。
通过线程执行导入，并把正在执行的状态存入session，既共享执行状态，通过ajax调用session里的执行状态，从而实现反馈导入状态的功能！
上代码： 前端页面
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>批量导入数据</title> <style type="text/css"> .pop_body_con { 310px; position: fixed; top: 50%; left: 50%; margin-left: -150px; background: #eee; display:none; } .pop_body_con .pop_head { auto; padding: 10px 0; background: #fff; } .pop_body_con .pop_head a { display: block; color: #717274; font-size: 12px; text-decoration: none; text-align: center; } .pop_box { auto; overflow: hidden; padding: 45px 10px; } .pop_box .pop_text { float: left; } .pop_box .pop_text p { padding: 0; margin: 0; font-size: 12px; line-height: 18px; color: #717274;} .pop_box .progress_bar_con { float: left; 220px; position: relative; z-index: 2; } .pop_box .progress_bar_con p { margin: 0; padding: 0; font-size: 12px; color: #fff; line-height: 18px; 100%; text-align: center; position: absolute; left: 0; top: 0; z-index: 4; } .pop_box .progress_bar_con .progress_bar_start { 100%; height: 18px; background: #C4C0C0; } .pop_box .progress_bar_con .progress_bar_end { 16%; height: 18px; background: #2bd35d; position: absolute; left: 0; top: 0; z-index: 3; } .pop_box .progress_bar_con { float: left; } #loading-mask { 100%; height: 100%; position: fixed; top: 0px; left: 0px; z-index: 0; display: none; } </style> <script src="ajax-master/jquery.js"></script> <script> var MyInterval; $(function () { $("#startImport").click(function () { MyInterval = setInterval(getState, 1000); }); }); function getState() { $.ajax({ url: "test.aspx", type: "Post", data: { action: "getSession" }, success: function (msg) { if (msg != "null") { msg = eval('(' + msg + ')'); if (msg.being == 100) { setProcessBar(1, 1); $(".pop_body_con").hide(); $("#loading-mask").hide(); clearInterval(MyInterval); } else { $(".pop_body_con").show(); $("#loading-mask").show(); setProcessBar(msg.being, msg.count) } } } }); } function setProcessBar(exeFlag, exeMax) { $("#progressbar_text").html(parseInt(roundFun(exeFlag / exeMax, 2) * 100) + "%"); $("#progressbar_bar").attr("style", "" + parseInt(roundFun(exeFlag / exeMax, 2) * 100) + "%;"); } function roundFun(number, X) { X = (!X ? 2 : X); return Math.round(number * Math.pow(10, X)) / Math.pow(10, X); } </script></head><body style=""> <input id="startImport" type="button" value="导入数据" /> <div id="loading-mask" ></div> <div class="pop_body_con"> <div class="pop_head"> <a href="javascript:;">正在导入…请勿操作！</a> </div> <div class="pop_box"> <div class="pop_text"> <p>导入进度：</p> </div> <div class="progress_bar_con"> <p id="progressbar_text">0%</p> <div class="progress_bar_start"></div> <div class="progress_bar_end" id="progressbar_bar"></div> </div> </div> </div></body>后台
using System.Linq;using System.Threading;using System.Web;using System.Web.Script.Serialization;using System.Web.UI;using System.Web.UI.WebControls;public partial class test : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { string action = Request.Form["action"]; if (!string.IsNullOrEmpty(action)) { Hashtable temp = tmethod(); if (temp == null) { Thread trd = new Thread(new ParameterizedThreadStart(insertData)); trd.Start(action); } else { if (temp["reCode"].ToString() == "100") { Session.Remove("process"); } } JavaScriptSerializer ser = new JavaScriptSerializer(); String jsonStr = ser.Serialize(temp); Response.Write(jsonStr); Response.End(); } } public Hashtable tmethod() { return (Hashtable)Session["process"]; } private void insertData(object obj) { string action = obj.ToString(); int tCount = 100; for (int i = 0; i < tCount; i++) { Hashtable stateHash = setStateVal(0, i, tCount, action); Session["process"] = stateHash; //存入session，方便共享执行状态 Thread.Sleep(500); } Session["process"] = setStateVal(100, tCount, tCount, action); Thread.CurrentThread.Abort(); } private Hashtable setStateVal(int code, int beingV, int CountV, string action) { Hashtable stateHash = new Hashtable(); stateHash["reCode"] = code; //返回状态值 stateHash["being"] = beingV; //正在执行值 stateHash["count"] = CountV; //总值 stateHash["action"] = action; //总值 return stateHash; }}