单点登录如何实现一个网站登录，另一个网站自动登录

Question

这是项目一的登录方法
function zjlogin() {
var username = $("#username").val();
var password = $("#password").val();
var yzm1 = $('#gryzm').val();
var rand = $('#rand1').val();

        if (username == null || $.trim(username) == "") {
            alert("用户名不能为空!");
            return;
        }
        if (password == null || $.trim(password) == "") {
            alert("密码不能为空！");
            return;
        }
        if (yzm1 == null || $.trim(yzm1) == "") {
            alert("验证码不能为空！");
            return;
        }
        if (yzm1 != null || $.trim(yzm1) != ""){
                if(yzm1.toLowerCase()!=rand.toLowerCase()){
                    alert("验证码错误！");
                    $('#gryzm').val("");
                    return ;
                }
            var reg = /^\d{11}$/ig;
    //验证用户输入是否是手机号
    if (reg.test(username)) {

        //如果是手机登录

          $.ajax({ 
               type: "post", 
               data:{ username: username, pwd:password},
               url: "${ctx}/userController/toCheckPhone.do",
                 success: function (meg) { 
                  if(""==meg){            
                      alert("手机号不存在!请重新登录");
                      return ;
                  }else{
                        window.location.href = "${ssoUrl}/sso/remoteLogin?username="
                            + meg
                            + "&password="
                            + password
                            + "&service=${localUrl}/home/home.do&submit=true&loginUrl=${localUrl}/home/home.do";

                  }
                    }, 
                     error: function (XMLHttpRequest, textStatus, errorThrown) { 
                         alert("hhsfhghsdh");
                      alert(errorThrown); 
                     } 
                });


    }else{


        $.ajax({ 
               type: "post", 
               data:{ username: username, pwd:password},
               url: "${ctx}/userController/toCheckUserName.do", 
                dataType: "json", 
                 success: function (meg) { 
                  if(false == meg){               
                      alert("用户名或密码错误!请重新登录");
                      return ;
                  }else{
                        window.location.href = "${ssoUrl}/sso/remoteLogin?username="
                            + username
                            + "&password="
                            + password
                            + "&service=${localUrl}/home/home.do?&submit=true&loginUrl=${localUrl}/home/home.do";

                  }
                    }, 
                     error: function (XMLHttpRequest, textStatus, errorThrown) { 
                      alert(errorThrown); 
                     } 
                });
            }

    }



            }

Answer 1

项目二的登录方法：
function login() {
var username = $('#username').val();
var password = $('#password').val();
var callBack = $('#callback').val();
var yzm = $('#gryzm').val();
if (username == null || $.trim(username) == "") {
$("#message").text("用户名不能为空！");
$("#message").css({
"display" : "inline"
});
return;
}
if (password == null || $.trim(password) == "") {
$("#message").text("密码不能为空！");
$("#message").css({
"display" : "inline"
});
return;
}
if (yzm == null || $.trim(yzm) == "") {
$("#message").text("验证码不能为空！");
$("#message").css({
"display" : "inline"
});
return;
}
if (callBack == "") {

            //callBack = "http://58.221.147.12:80/rdwebup/zz.jsp";

            callBack = "http://zwdt.rdzw.gov.cn/";
            //现场
            //callBack ="http://58.221.147.13:7980/rdwebup/showMatterProce.do?flag=bsdt";
        }

        var reg = /^\d{11}$/ig;
        var loginType;
        var url;

        //验证用户输入是否是手机号
        if (reg.test(username)) {
            //如果是手机号登录
            //现场webconsole地址http://58.221.147.34:8080/webconsole/
            url = "${wcUrl}/userAction_moblieLogin.action?mobile="
                    + username
                    + "&pwd="
                    + password
                    + "&callBack="
                    + callBack + "&failUrl=${cbUrl}/bsdt/login.jsp";
            loginType = 0;
        } else {

            var as = "&service="
                    + callBack
                    + "&submit=true&loginUrl=${cbUrl}/bsdt/login.jsp";

            var bs = "${ssoUrl}/sso/remoteLogin?username=" + username
                    + "&password=" + password;
            var cs = bs + as;

            //console.log(cs);
            url = cs;
            loginType = 1;
        }
        $.post("${ctx}/login.do",{username:username,password:password,loginType:loginType,yzm:yzm},function(mes){

            if(mes == "success"){
                document.getElementById("iframe1").src="http://zjxx.rdzw.gov.cn/ms/bz/login.do?username="+username+"&password="+password;
                setTimeout("location.href =url;",500);


            }else if(mes=="yzmerror"){
                alert("验证码错误！");
            }else if(mes=="")
            {
                location.href =url; 
            }
            else
            {                   
                alert("用户名或密码错误！");                   
            }
        });

    }