Tomcat启用压缩，解决页面加载缓慢有关问题

  <Connector port="8080" protocol="HTTP/1.1" 
		connectionTimeout="20000"
		redirectPort="8443"
		compression="on"
		compressionMinSize1="2048"
		noCompressionUserAgents="gozilla, traviata"
		compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"/>