function get(url, onSuccess, onFailure) {
            http(Method.GET, url, {}, onSuccess, onFailure);
        }
function get(url, onSuccess, onFailure) {
            http(Method.GET, url, {}, onSuccess, onFailure);
        }
function get ( url , onSuccess , onFailure ) { http ( Method . GET , url , { } , onSuccess , onFailure ) ; }
HTTP GET 远端数据。
HTTP GET 远端数据。