tomcat 启用Gzip 压缩进行优化

打开conf/server.xml文件可以看到：

<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
     <Connector
port="8080"               maxHttpHeaderSize="8192"
                maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
                connectionTimeout="20000" disableUploadTimeout="true" />
<!-- Note : To disable connection timeouts, set connectionTimeout value
      to 0 -->

<!-- Note : To use gzip compression you could set the following properties :

       compression="on"
       compressionMinSize="2048"
       noCompressionUserAgents="gozilla, traviata"
       compressableMimeType="text/html,text/xml"
-->

要使用gzip压缩功能，可以在Connector实例中加上如下属性:

1) compression="on" 打开压缩功能
2) compressionMinSize="2048" 启用压缩的输出内容大小，这里面默认为2KB
3) noCompressionUserAgents="gozilla, traviata" 对于以下的浏览器，不启用压缩&<60;
4) compressableMimeType="text/html,text/xml" 压缩类型

修改完成后

<Connector
port="8080"               maxHttpHeaderSize="8192"
                maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
                enableLookups="false" redirectPort="8443" acceptCount="100"
                connectionTimeout="20000" disableUploadTimeout="true"
       compression="on"
compressionMinSize="2048"
noCompressionUserAgents="gozilla,traviata"
compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain" />

即在Connector里面增加红色部分即可。