在servel.xml文件中的Connector元素里加上
<Connector port="8080" protocol="HTTP/1.1" useBodyEncodingForURI="true"
URIEncoding="UTF-8"
connectionTimeout="20000"
redirectPort="8443"
compression="on"
compressionMinSize="2048"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="text/html,text/xml,text/css,text/javascript,text/plain"/>
对于图片这种已经压缩过的内容不用配置