//地址逆解析;
    function getAddress(pt) {
        var geoc = new BMap.Geocoder();
        geoc.getLocation(pt, function (rs) {
            var addComp = rs.addressComponents;
            var tra_name = addComp.province + "" + addComp.city + "" + addComp.district + "" + addComp.street + "" + addComp.streetNumber;
            //记录入库;
            addTrajectory(tra_name, pt.lng, pt.lat);
        })
    }

Done!