ajax请求添加自定义header参数

$.ajax({
             type: "post",
             url:"http://127.0.0.1:4564/bsky-app/template/testPost",
             contentType: "application/json;charset=utf-8",
             data :JSON.stringify({"bodyName":"sdfsdf","date":"2017-11-28 07:34:01","price": 10.5,"tbId": 1}),
             dataType: "json",
             beforeSend: function (XMLHttpRequest) {
         		XMLHttpRequest.setRequestHeader("token", "eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiIxOD.....");
             },
             success: function (data) {
            	 alert(data);
             },error:function(error){
                 console.log(error);
             }
         });

	beforeSend: function (XMLHttpRequest) {
         	XMLHttpRequest.setRequestHeader("token", "eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiIxOD.....");
        },

其中，token是服务端自定义的header参数