显示带有特殊字符代码的html，只需将其用作html即可

<%=@map.div(:width => 800, :height => 500)%>

<div id=\"map\" style=\"width:800px;height:500px\" ></div>

<div id=\"map\" style=\"width:800px;height:500px\" ></div>

    require \'rubygems\'
include GeoKit::Geocoders

class HomeController < ApplicationController

 def index
  coordinates =[13.0343841,  80.2502535] #you can get the coordinates for the location you want from http://stevemorse.org/jcal/latlon.php
  @map = GMap.new(\'map\')
  @map.control_init(:large_map => true, :map_type => true)
  @map.center_zoom_init(coordinates,10) # here 10 referes to the zoom level for a map
  @map.overlay_init(GMarker.new(coordinates,:title => \'Chennai\', :info_window => \'Chennai\'))
end
end