之前用jquery的ajax请求访问REST,用"GET/POST"发送http请求，服务端收到的总是“Option”方法。网上了解到其实是跨域导致的，结果是http header 和params都无法获取到。

    然后，就查了下jquery的跨域调用，发现只要用jsonp的方式就可以，代码如下：

        

var postdata = {

'

Authorization

':

'

AWS cuimeng1:1232432453

'}

        

var dDate = 

"

Wed, 01 Mar 2009 12:00:00 GMT

";

        $.ajax({

           url:HOST_URL,

           type:

'

GET

',

           dataType:

'

jsonp

' ,

           jsonp: 

'

callback

' ,

           data: postdata,

           header:{

               

"

Authorization

":

"

AWS cuimeng1:1232432453

"

           },

            beforeSend: function(xhr) {

                xhr.setRequestHeader(

"

Date

",dDate);

                xhr.setRequestHeader(

"

Authorization

",

"

AWS cuimeng1:1232432453

");

            },

            success:function(result){

                alert(

'

ok

');

           },

            error:function(xhr,textStatus,errowThrown){

                alert(xhr.status);

                alert(textStatus);

            }

        });