JOSN+ASP+SQL SERVER

json和登陆扯不上关系;JSON是网落传输数据所采用的一种格式好象.

JOSN 我不懂，从来没接触过。不过，最近让用json做登陆。我网上看了很多。都不明白。

$("#op_login").click(function () {
                $(".op-input").CheckEmpty(function (result) {
                    if (!result) {
                        //非空，登录
                        $.ajax({
                            type: "POST",
                            url: "PrivateCmsService.svc/VerifyUserLogin",
                            data: '{"userName":"' + $("#op-name").val() + '","pwd":"' + $.md5($("#op-pwd").val()) + '"}',
                            dataType: "json",
                            contentType: "text/json;",
                            beforeSend: function (XMLHttpRequest) {
                                $("#op_login").prop("disabled", true);
                                $("#TxtStatus").html(String.format(TIPS_TEXT, "<img src='images/ajax-loader.gif' alt='' />", "请稍候……"));
                            },
                            error: function (XMLHttpRequest) {
                                $("#op_login").prop("disabled", false);
                                $("#TxtStatus").html(String.format(TIPS_ERROR, "ERROR", "登录失败" + XMLHttpRequest.responseText));
                            },
                            success: function (result) {
                                if (result.d) {
                                    $("#TxtStatus").html(String.format(TIPS_TEXT, "", "已登录,<a href='default.aspx'>正在跳转</a>")).fadeIn(2000, function () { window.location = 'ccenter/default.aspx'; });
                                } else { $("#op_login").prop("disabled", false); $("#TxtStatus").html(String.format(TIPS_ERROR, "ERROR", "可耻的失败了")); }
                            }
                        });
                    }
                }); public bool VerifyUserLogin(string userName, string pwd)
        {
            try
            {
                Op op = opDao.GetByLoginName(userName);
                //密码=md5(md5(input)+salt)
                return op.Password == MD5Tool.Encrypt(pwd + op.PasswordSalt);
            }
            catch { return false; }
        }json和登陆有什么关系吗，只不过一个数据表示方式而已

jQuery(function($) {
    var username = $("#username");
    var pwd = $("#pwd");
    var code = $("#code");
    $("#oalogin").click(function() {
    $.post("Ajax/Help/Ajax_Help.ashx?method=login&date=" + new Date().getTime(), { Action: "post", username: username.val(), pwd: pwd.val(), code: code.val()},
        function(data, textStatus) {
            if (data.result == 'Eok') {
                top.location.href = "index.aspx?a0e4=ee11cbb19052e40b07aac0ca060c23ee";
            }
            else if(data.result == 'Aok') {
                top.location.href = "index.aspx?a0e4=21232f297a57a5a743894a0e4a801fc3";
            }
            else {
                        if(data.result=="Code")
                        {
                           showMsgErr("RegVerifyCode_info","");
                           pass=false;
                           return false;
                           checkform();
                        }
                        else if(data.result=="UP")
                        {
                          showMsgErr("loginid_info","");
                          showMsgErr("password_info","");
                          pass=false;
                          return false;
                          checkform();
                        }
                        else
                        {
                          checkform();
                        }
            }         }, "json");
    });
});function jumpUrl(url) {
    document.getElementById("check_code").src = url;
}function validateNum(s)
{
if(s.search)
{
return (s.search(new RegExp("^[0-9]+$","g"))>=0)
}
}function validatestr(str1)
{
    var str = str1;
    var patn =/^[a-zA-Z0-9]+$/;
    if(!patn.test(str))
    {
        return false;
    }
    return true;
}function validatePassword(str){
//var str = obj.value;
var patn1 =   /^[a-zA-Z0-9]+$/;
if(!patn1.test(str) ) return false;
return true;
}
function trim(srcStr)
{
var i,j,len;
len=srcStr.length;
for(i=0;i<len;i++)
if(srcStr.charAt(i)!=' ') break;
for(j=len-1;j>=i;j--)
if(srcStr.charAt(j)!=' ') break;
if(i>j)
return "";
else
return srcStr.substr(i,j-i+1);
}
function $(obj)
{
    return document.getElementById(obj);
}var pass=true;
var usernamepass=0;
var emailpass=0;
function title1(str1,str2,strmsg)
{    var obj1=$(str1);
    var obj2=$(str2);
    if(trim(obj1.value)==''||obj1.value.substring(0,3)=="hm-")
    {
        obj2.style.display="block";
        obj2.className="notetrue";
        obj2.innerHTML=strmsg;

    }
}
  function checkusername()
  {
    var username=$("username");
    var strname=username.value;
    if(trim(strname)!='')
    {
        if(strname.length<6||strname.length>20 )
        {
            showMsgErr("loginid_info","");
            pass=false;
            usernamepass=1;
            return false;
        }
        if(!validatestr(strname))
        {
            showMsgErr("loginid_info","");
            pass=false;
            usernamepass=2;
            return false;
        }
        showMsgLoad("loginid_info","");
               showMsgOk("loginid_info","");
               usernamepass=3;
     }
     else
     {
          showMsgErr("loginid_info","");
          pass=false;
          usernamepass=4;
          return false;
     }
  }  function checkpassword()
  {
    var strpassword=$("pwd").value;
    var strusername=$("username").value;
    if(trim(strpassword)!='')
    {
        if(strpassword.length<6||strpassword.length>20)
        {
            showMsgErr("password_info","");
            pwdpass=1;
            pass=false;
            return false;
        }
        if(!validatePassword(strpassword))
        {
            showMsgErr("password_info","");
             pwdpass=2;
            pass=false;
            return false;
        }
        showMsgOk("password_info","");
              pwdpass=3;
     }
     else
     {
         showMsgErr("password_info","");
          pwdpass=4;
          pass=false;
     }
  } function checkRegVerifyCode()
{
    var strRegVerifyCode=$("code").value;
    if(trim(strRegVerifyCode)!=''&&strRegVerifyCode.length==4)
    {
        showMsgOk("RegVerifyCode_info","");
    }
    else
    {
       showMsgErr("RegVerifyCode_info","");
       pass=false;
       return false;
    }
}  //显示警告信息
function showMsgWarm(divid,errmsg)
{
    var objdiv=$(divid);
    objdiv.className="notetrue";
    objdiv.style.display="block";
    objdiv.innerHTML=errmsg;
}
//加载状态
function showMsgLoad(divid,errmsg)
{
    var objdiv=$(divid);
    objdiv.className="noteload";
    objdiv.style.display="block";
    objdiv.innerHTML=errmsg;
}
//显示出错信息
function showMsgErr(divid,errmsg)
{
    var objdiv=$(divid);
    objdiv.className="noteawoke";
    objdiv.style.display="block";
    objdiv.innerHTML=errmsg;
}
  //显示正确信息
function showMsgOk(divid,errmsg)
{
    var objdiv=$(divid);
    objdiv.className="noteok";
    objdiv.style.display="block";
    objdiv.innerHTML=errmsg;
}   function checkform()
{
    checkusername();
    checkpassword();
    checkRegVerifyCode();
    if(!pass) {
        return false;
    }
    else
    {
        return true;
    }

}

这个看看官网介绍就行了，和xml一样，就是个浅显的数据表示规范
http://www.json.org/json-zh.html

一种数据表示格式而已，你得再结合ajax请求来判断登录就行了

调试易

JOSN+ASP+SQL SERVER

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