ajax异步请求问题(ajax回调中调用ajax,是同步还是异步)
本帖最后由 cyw1592951 于 2012-11-20 15:56:45 编辑 场景：
三个ajax请求，1：查询用户名，2：初始用户业务数据，3：登录验证
用户登录时 输入用户名之后(使用1)，查询出用户的时候，开始使用（2）ajax到后台去初始用户的业务数据;
输入用户名点击登录之后 验证(使用3)通过直接跳转;
目前情况:点击 登录之后要等 很久 个人认为是 等待 2 执行完成之后才跳转
要求：验证通过直接跳转
ajax代码如下
window.LCount = 0;
$(function () {
var gongHao = $('#txtNO'), uid = $('#txtUid'), pwd = $('#txtPwd');
gongHao.bind('keydown', function (e) {
var key = e.which;
if (key == 13) {
if (checkEmpty(1)) {
pwd.focus();
}
}
});
pwd.bind('keydown', function (e) {
var key = e.which;
if (key == 13) {
$("#btnLogin").click();
}
});
$('#btnLogin').bind('keydown', function (e) {
var key = e.which;
if (key == 13) {
$("#btnLogin").click();
}
});
function action(rValue) {
var result = eval("(" + rValue + ")");
if (result.status == 0) {
uid.val(result.message);
pwd.focus();
}
};
function checkEmpty(e) {
if ($.trim(gongHao.val()) == '') {
$('#btnLogin').val("登 录");
alert("工号不能为空！");
gongHao.focus();
return false;
}
else if (e == 2) {
if ($.trim(pwd.val()) == '') {
$('#btnLogin').val("登 录");
alert("密码不能为空！");
pwd.focus();
return false;
}
}
return true;
};
gongHao.change(function () {
var Result, RState;
if (checkEmpty(1)) {
uid.val('正在读取用户名...');
$.ajax({
global: false,
async: true,
url: 'login.aspx?GH=' + gongHao.val() + "&_" + Math.random(),
success: function (Result) {
var result = eval("(" + Result + ")");
if (result.status == 0) {
uid.val(result.message);
pwd.focus();
$.ajax({
global: false,
cache: false,
async: true,
// type: 'POST',
url: 'Login.aspx?action=Ready&SFZ=' + gongHao.val() + "&_" + Math.random(),
success: function (RState) {
}
});
}
else if (result.status == -1) {
alert(result.message);
gongHao.focus();
}
}
});
}
});
$('#btnLogin').click(function () {
var Result;
$('#btnLogin').val("登录中...");
if (!checkEmpty(2)) {
return false;
} else {
$.ajax({
global: false,
async: true,
url: "login.aspx?GH=" + gongHao.val() + "&Pwd=" + pwd.val(),
success: function (Result) {
var result = eval("(" + Result + ")");
if (result.status == 1) {
top.window.location.href = 'Default.aspx?Model=0';
}
else if (result.status == -2) {
pwd.val('');
$('#btnLogin').val("登 录");
alert(result.message);
pwd.focus();
return false;
}
}
});
}
});
});
window.onload = function () {
document.getElementById("txtNO").focus();
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Security;
using MediInfo.Extensions;
using System.Configuration;
using Microsoft.Practices.EnterpriseLibrary.Logging;
using System.IO;
using System.Data;
using System.Threading;
namespace MediInfo.EHR_VIEW.UIL
{
public partial class Login : BasePage
{
IBLL.IEHR_MPI Bll = new BLL.EHR_MPI();
IBLL.IBLL_Common CommanBll = new BLL.BLL_Common();
protected void Page_Init(object sender, EventArgs e)
{
if (Request["Model"] != null && Request["Model"]=="1")
{
if (Request["MPI"] != null && Request["MPI"].ToString() != "")
{
//此部分暂且去掉，
}
}
else if (!Page.IsPostBack)
{
if (Request["action"] != null)
{
if (!string.IsNullOrEmpty(Request["action"]))
{
switch (Request["action"].ToString().ToLower())
{
case "ready":
string DataLogic = ConfigurationManager.AppSettings["DataLogic"].ToString();
int State = 0;
switch (DataLogic) {
case "1":
if (Request["SFZ"] != null)
{
if (!string.IsNullOrEmpty(Request["SFZ"]))
{
string ShengFenZh = Request["SFZ"].ToString().Trim();
if (!CommanBll.AccessOver(CookieInfo.MPI.ToString()))
{
CommanBll.READY_YONGHUSJ(ShengFenZh, State);
CookieInfo.DataRedy = "True";
}
else
{
CookieInfo.DataRedy = "True";
}
Response.Clear();
Response.Write("{status:" + State.ToString() + "}");
Response.End();
}
}
break;
case "0":
Response.Clear();
Response.Write("{status:" + State.ToString() + "}");
Response.End();
break;
}
break;
}
}
}
else
{
AJAX_Action();
Response.Cookies.Add(new HttpCookie("testCookie", ""));
}
}
}
private void ReadyDataPro(object MPI)
{
int p = 0;
string DataReady = "false";
if (!CommanBll.AccessOver(MPI.ToString()))
{
CommanBll.READY_YONGHUSJBYMPI(MPI.ToString(), p);
DataReady = "True";
// CookieInfo.DataRedy = "True";
//Session["DataReady"] = "True";
}
else
{
DataReady = "True";
}
//Session["DataReady"] = DataReady;
CookieInfo.DataRedy = DataReady;
}
protected void Page_Load(object sender, EventArgs e)
{
}
/// <summary>
///
/// </summary>
/// <param name="mpi"></param>
private bool GetYongHuXXInnerP(string mpi)
{
bool b = true;
if (mpi != CookieInfo.MPI)
{
DataSet ds = CommanBll.Get_EHR_YONGHULOGIN("and MPI='" + mpi + "'");
if (ds != null && ds.Tables[0].Rows.Count > 0)
{
CookieInfo.SHENFENZH = ds.Tables[0].Rows[0]["SHENFENZH"].ToString();
CookieInfo.XINGMING = ds.Tables[0].Rows[0]["XINGMING"].ToString();
CookieInfo.MPI = ds.Tables[0].Rows[0]["MPI"].ToString();
CookieInfo.XINGBIE = ds.Tables[0].Rows[0]["XINGBIEMC"].ToString();
CookieInfo.DYZ_USERID = ds.Tables[0].Rows[0]["SHENFENZH"].ToString();
CookieInfo.DYZ_USERNAME = ds.Tables[0].Rows[0]["XINGMING"].ToString();
CookieInfo.CHUSHENGRQ = ds.Tables[0].Rows[0]["CHUSHENGRQ"].ToString();
FormsAuthentication.SetAuthCookie(CookieInfo.MPI, false);
b = true;
}
else
{
Server.Transfer("ShowMsg.aspx?msgtype=nompi&msg=没有相关信息");
b = false;
}
}
return b;
}
private void AJAX_Action()
{
string result = string.Empty;
try
{
if (Request.Cookies["testCookie"] == null && Request.QueryString["GH"] != null)
{
result = "{status:-1,message:'您的浏览器设置已被禁用 Cookies，您必须设置浏览器允许使用 Cookies 选项后才能使用本系统。'}";
}
else if (Request.QueryString["GH"] != null && Request["Pwd"] == null)
{
result = GetYongHuXX(Request.QueryString["GH"]);
}
else if (Request.QueryString["GH"] != null && Request.QueryString["Pwd"] != null)
{
result = CheckedPassword(Request.QueryString["GH"], Request.QueryString["Pwd"]);
}
}
catch (Exception ex)
{
Logger.Write(string.Format("Soruce:{0}\r\nMessage:{1}\r\nTrace:{2}\r\nDateTime:{3}",
ex.Source, ex.Message, ex.StackTrace, DateTime.Now),
"Exception Log");
result = "{status:-1,message:'登录失败(" + ex.Message.Replace("\r", "").Replace("\n", "") + ")，请重试'}";
}
if (result.Length > 0)
{
Response.Clear();
Response.Write(result);
Response.End();
}
}
/// <summary>
/// 根据工号得到用户信息
/// </summary>
/// <param name="gh">工号</param>
/// <returns></returns>
private string GetYongHuXX(string gh)
{
DataSet ds = CommanBll.Get_EHR_YONGHULOGIN("And SHENFENZH='" + gh.Trim() + "' and ROWNUM=1");
if (ds != null && ds.Tables[0].Rows.Count > 0)
{
CookieInfo.SHENFENZH = ds.Tables[0].Rows[0]["SHENFENZH"].ToString();
CookieInfo.XINGMING = ds.Tables[0].Rows[0]["XINGMING"].ToString();
CookieInfo.MPI = ds.Tables[0].Rows[0]["MPI"].ToString();
CookieInfo.XINGBIE = ds.Tables[0].Rows[0]["XINGBIEMC"].ToString();
CookieInfo.DYZ_USERID = ds.Tables[0].Rows[0]["SHENFENZH"].ToString();
CookieInfo.DYZ_USERNAME = ds.Tables[0].Rows[0]["XINGMING"].ToString();
CookieInfo.CHUSHENGRQ = ds.Tables[0].Rows[0]["CHUSHENGRQ"].ToString();
return "{status:0,message:'" + ds.Tables[0].Rows[0]["XINGMING"].ToString() + "'}";
}
else
{
return "{status:-1,message:'身份证号不存在或此身份证号已被停用！'}";
}
}
private string GetYongHuXX2(string gh)
{
IList<Entity.EHR_MPI> entityList = Bll.GetEntityList("SHENFENZH='" + gh.Trim() + "'", "");
if (entityList != null&& entityList.Count>0)
{
Entity.EHR_MPI entyh = entityList[0];
CookieInfo.SHENFENZH = entyh.SHENFENZH;
CookieInfo.XINGMING = entyh.XINGMING;
CookieInfo.MPI = entyh.MPI;
CookieInfo.XINGBIE = entyh.XINGBIEMC;
CookieInfo.DYZ_USERID = entyh.SHENFENZH;
CookieInfo.DYZ_USERNAME = entyh.XINGMING;
FormsAuthentication.SetAuthCookie(CookieInfo.MPI, false);
}
return "0";
}
}
