开启TOMCAT6的GZIP压缩

修改 $CATALINA_HOME/conf/server.xml

找到：

<Connector port="8080"
protocol="HTTP/1.1"
maxThreads="150"
connectionTimeout="20000"
redirectPort="8443" />

与压缩相关的设置说明：

compression : The Connector can use HTTP/1.1 GZIP compression to get better bandwidth
from the server. This can be enabled via the compression attribute. The valid values are off (disables compression), on (enables compression), force (forces compression in all cases), or a numerical value that specifies the minimum amount of data required before the output is compressed.The default value of the compression attribute is off .

compressibleMimeTypes : This is a comma-separated list of MIME types for which HTTP compressions (see the next attribute) can be used. The default value is text/html,text/xml,text/plain .

noCompressionUserAgents : This is a comma-separated list that matches the HTTP UserAgent value of Web browsers that have a broken support for HTTP/1.1 compression. Regular expressions can be used here.

修改后的server.xml

<Connector port="8080" protocol="HTTP/1.1" maxThreads="150" 
compression="on" 
	noCompressionUserAgents="gozilla, traviata" 
compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain,application/json"
               connectionTimeout="20000" 
               redirectPort="8443" />