ajax跨域访问(cross-domain)

来源：互联网发布：mac重启编辑：程序博客网时间：2024/06/05 17:12

本地站：http://www.somedomain.com

目标站：http://bbs.somedomain.com

解决方法 :

1. 在目标站 document.domain = 'somedomain.com';

并建立一个ajax.html,引用ajax方法 (大家都叫它服务中介)

然后创建一个ajax对象 var webreq = new Ajax();

2. 在本地站 document.domain = 'somedomain.com';

用iframe引用目标站的ajax.html.

详细方法:

1. 本地站的一个页面(Test.html)

html:

<html>

<head>

function getAjax()

{

var spn = document.getElementByIdx('spninfo');

var bbsWin = document.getElementByIdx('ifrWindow').contentWindow;

var Ajax = bbsWin.webreq;

Ajax.Config.Result = 'TestAjaxCross';

Ajax.Config.returnType = 'Content';

Ajax.ActionPost('http://bbs.somedomain.com/doAjax.aspx',spn,window);

}

</script>

</head>

<body>

</body>

</html>

/////////////////////////////////////////////////////////////////////////////

2. 目标站的ajax.html

Html:

<html>

<head>

var webreq = new Ajax();

function ExecResult(ty,W)
{
      if (ty == 'TestAjaxCross')
      {
            W.document.getElementByIdx('loginName').value = '';
            W.document.getElementByIdx('loginPass').value = '';
            W.location.href = 'http://www.somedomain.com/urlyouwantgo';
      }
}

</script>

</head>

<body>

</body>

</html>

----------------------------------------------------------------

目标站： doAjax.aspx

html为空

doAjax.aspx.cs

代码(Page_Load)

Response.Write("<zwd><content>看到效果了么？</content></zwd>");

return;

=====================================================

AjaxMethod.js 代码

function grr(rp) {
if(RegExp.$1)/(.*)/.exec("");
var re=new RegExp("<result>(.*)<//result>");
re.exec(rp);
if(RegExp.$1) return RegExp.$1;
return "";
}

function crr(rp) {
if(RegExp.$1)/(.*)/.exec("");
var re=new RegExp("<content>(.*)<//content>");
re.exec(rp);
if(RegExp.$1) return RegExp.$1;
return "";
}

var Ajax = function() {}
//var xhr ;这样定义不行
Ajax.prototype.Init = function(){
return Try.these(
  function() {return new ActiveXObject("Msxml2.XMLHTTP")},
  function() {return new ActiveXObject("Microsoft.XMLHTTP")},
  function() {return new XMLHttpRequest()}
) || false;
}

Ajax.prototype.Config = {
Result:"",
SucInfo:"",
FaildInfo:"",
Url:"",
returnType:"Compare", //输入Compare是比较返回的字符是否一致,要指定Result值,//其他返回内容
ExecFunc:function(ty,W){
if (typeof ExecResult == 'function')
ExecResult(ty,W);
},
sendData:""
}

var aj = new Ajax();

Ajax.prototype.Action = function(url) { //同步
url = url + '&e='+Math.random();
var xhr = aj.Init();
xhr.onreadystatechange = function()
{
  if (xhr.readyState == 4)
  {
   if (xhr.status == 200)
   {
    aj.FuncResult(aj.Config.Spn,xhr);
   }
  }
}
xhr.open("POST",url,false);
xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

xhr.send(null);

}

Ajax.prototype.Actionfor = function(url,spn) { //异步

url = url + '&e='+Math.random();
var xhr = aj.Init(); //这样写是为了多异步执行

xhr.onreadystatechange = function()
{
  if (xhr.readyState == 4)
  {
   if (xhr.status == 200)
   {
    aj.FuncResult(spn,xhr);
   }
  }
}
xhr.open("GET",url,true);

xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xhr.send(null);
}

Ajax.prototype.ActionAlert = function(url) //执行alert提示框的同步
{
url = url + '&e='+Math.random();
var xhr = aj.Init(); //这样写是为了多异步执行

xhr.onreadystatechange = function()
{
  if (xhr.readyState == 4)
  {
   if (xhr.status == 200)
   {
    aj.AlertResult(xhr);
   }
  }
}
xhr.open("GET",url,false);

xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
xhr.send(null);
}

Ajax.prototype.ActionPost = function(url,spn,W) //同步 send
{
url = url + '?e='+Math.random();
var xhr = aj.Init(); //这样写是为了多异步执行

xhr.onreadystatechange = function()
{
  if (xhr.readyState == 4)
  {
   if (xhr.status == 200)
   {
    aj.postResult(spn,xhr,W);
   }
  }
}

try {
     if (netscape.security.PrivilegeManager.enablePrivilege)
     {
            netscape.security.PrivilegeManager.enablePrivilege('UniversalBrowserRead');
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
        }
}catch(e) {};

xhr.open("POST",url,true);

xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
//xhr.setRequestHeader("Content-Length",pars.length);
xhr.setRequestHeader("Connection", "open");
xhr.send(Webreq.Config.sendData);
}

Ajax.prototype.GetJSONData = function(url,spn)
{
url = url + '?e='+Math.random();
var xhr = aj.Init(); //这样写是为了多异步执行

xhr.onreadystatechange = function()
{
  if (xhr.readyState == 4)
  {
   if (xhr.status == 200)
   {
    aj.jsonResult(spn,xhr);
   }
  }
}

xhr.open("POST",url,true);

xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
//xhr.setRequestHeader("Content-Length",pars.length);
xhr.setRequestHeader("Connection", "open");

xhr.send(null);
}

Ajax.prototype.onResult = function(v) {
return v==aj.Config.Result;
}

Ajax.prototype.FuncResult = function(spn,xhr)
{ //alert(spn.id);

if (aj.Config.returnType == 'Compare')
{
if (aj.onResult(grr(xhr.responseText)))
{

spn.innerHTML = aj.Config.SucInfo;
   aj.Config.ExecFunc(aj.Config.Result);
   if (aj.Config.Url!='')
   {
    window.location.href = aj.Config.Url;
   }
  }
  else
  {

spn.innerHTML = aj.Config.FaildInfo;

}
}
else
{
spn.innerHTML = crr(xhr.responseText);
aj.Config.ExecFunc(aj.Config.Result);
}

}

Ajax.prototype.AlertResult = function(xhr)
{
if (aj.Config.returnType=='Compare')
{
  if (aj.onResult(grr(xhr.responseText)))
  {
   alert(aj.Config.SucInfo);
   aj.Config.ExecFunc(aj.Config.Result);
  }
  else
  {
   alert(aj.Config.FaildInfo);
  }
}
else
{
  alert(crr(xhr.responseText));
  aj.Config.ExecFunc(aj.Config.Result);
}
}

Ajax.prototype.postResult = function(spn,xhr,W)
{
    if (aj.Config.returnType == 'Compare')
    {
        if (aj.onResult(grr(xhr.responseText)))
  {
   spn.innerHTML = aj.Config.SucInfo;
   aj.Config.ExecFunc(aj.Config.Result,W);
  }
  else
  {
   spn.innerHTML = aj.Config.FaildInfo;
  }
    }
    else
{
  spn.innerHTML = crr(xhr.responseText);
  aj.Config.ExecFunc(aj.Config.Result,W);
}
}

Ajax.prototype.jsonResult = function(spn,xhr)
{
    var jsonstr = xhr.responseText;
    var json = eval_r("return " + jsonstr);

    //get data json.something json:{username:"123",content:""};

    aj.Config.ExecFunc(aj.Config.Result);
}
///////////////////////////////////////////////////////////////

var WebServices = function() {}
WebServices.Config = {

}