本地开发的时候重新定义了下拉框的下拉箭头的样式setTimeout(function(){$("div").css({"background":"white","border-left-width":"0px"});$(".fr-trigger-btn-up").css({"background":"white"});$(".fr-trigger-text").css({"border-color":"#c0c0c0","border-right-width":"0px"});$(".fr-trigger-center").css({"background":"url('../../pic/arrow.png') 50%/80% no-repeat"});},1)是可以识别出URL的但是放到linux服务器上,是tomcate/webapps/webroot/pic/arrow.png 就不认了,这个要怎么修改?