修改tomcat配置文件:server.xml
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443"
compression="on"
compressionMinSize="2048"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="text/plain,application/javascript,application/json,application/x-javascript,text/css,application/xml,text/javascript,image/png,image/jpg,image/jpeg" />