Python动态刷新kml

      以下小段代码达到的效果是kml利用networklink不断去执行服务器上的phython代码，动态改变点的经纬度坐标。

首先在Internet信息服务下默认网站下新建虚拟目录，然后在该目录下的“虚拟目录”选项卡中创建应用程序，再点击“配置”，进入“应用程序配置”，点击添加（如下图），最后确定。

在该目录的资源管理器下新建randomPlacemark.py文件，代码如下：

#!C:/Python25/python.exe
#!以上更改为自己的python安装路径

import random

latitude = random.randrange(-90, 90)
longitude = random.randrange(-180, 180)
kml = (
   '<?xml version="1.0" encoding="UTF-8"?>\n'
   '<kml xmlns="http://www.opengis.net/kml/2.2">\n'
   '<Placemark>\n'
   '<name>Random Placemark</name>\n'
   '<Point>\n'
   '<coordinates>%d,%d</coordinates>\n'
   '</Point>\n'
   '</Placemark>\n'
   '</kml>'
   ) %(longitude, latitude)
print 'Content-Type: application/vnd.google-earth.kml+xml\n'
print kml

然后新建文件test.kml

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
  <Folder> 
  <name>Network Links</name> 
  <visibility>1</visibility> 
  <open>0</open> 
  <description>Network link example 1</description> 
  <NetworkLink> 
    <name>Random Placemark</name> 
    <visibility>1</visibility> 
    <refreshVisibility>1</refreshVisibility> 
    <open>0</open> 
    <description>A simple server-side script that generates a new random 
               placemark on each call</description> 
    <refreshVisibility>0</refreshVisibility> 
    <flyToView>1</flyToView> 
    <Link> 
     <href>http://computername/虚拟目录名/randomPlacemark.py</href> 
     <refreshMode>onInterval</refreshMode>
     <refreshInterval>5</refreshInterval>
     <viewRefreshMode>onStart</viewRefreshMode>
     <viewRefreshTime>4</viewRefreshTime> 
   </Link> 
  </NetworkLink> 
  </Folder>
  </kml>