tomcat 添加gzip压缩
在文件tomcat/conf/server.xml
中添加红色部分的配置即可打开使用压缩传输功能：
<Connector port="8080" address="${jboss.bind.address}"
maxThreads="250" strategy="ms" maxHttpHeaderSize="8192"
emptySessionPath="true"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" URIEncoding="UTF-8"
compression="on"
compressionMinSize="2048"
noCompressionUserAgents="gozilla, traviata"
compressableMimeType="application/java-archive,application/octet-stream,text/vnd.sun.j2me.app-descriptor,application/octet-stream, application/x-msdownload, image/png, image/gif, text/plain" />
compression 开关
noCompressionUserAgents 那种浏览器不使用压缩功能
compressionMinSize 启用压缩的输出内容大小，这里面默认为2KB
compressableMimeType 那些文件需要压缩 mimetype
在tomcat/webapps/工程/WEB-INF/web.xml中增加下面的配置
<mime-mapping>
<extension>conf</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>CONF</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>ini</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>INI</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>png</extension>
<mime-type>image/png</mime-type>
</mime-mapping>
<mime-mapping>
<extension>PNG</extension>
<mime-type>image/png</mime-type>
</mime-mapping>
<mime-mapping>
<extension>gif</extension>
<mime-type>image/gif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>GIF</extension>
<mime-type>image/gif</mime-type>
</mime-mapping>
<mime-mapping>
<extension>json</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>JSON</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
<mime-mapping>
<extension>xml</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>XML</extension>
<mime-type>text/xml</mime-type>
</mime-mapping>
<mime-mapping>
<extension>dll</extension>
<mime-type>application/x-msdownload</mime-type>
</mime-mapping>
<mime-mapping>
<extension>DLL</extension>
<mime-type>application/x-msdownload</mime-type>
</mime-mapping>