跨域请求POST的解决方法介绍

//     请求代码示例

$.ajax({

    url: url,

    type: "POST",

    data: metadata,

    dataType: 'json',

    xhrFields: { 

        withCredentials: true 

    }, 

    crossDomain: true,

    success: function(){},

    error: function(){}

});