gzip

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 <meta http-equiv="accept-encoding" content="gzip,deflate"> 

在tomcat中配置gzip的方法是在conf/server.xml文件中把以前的配置修改成

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

配置后的头文件你会发现成这样了

1.响应头信息  

Server  Apache-Coyote/1.1   
Set-Cookie  JSESSIONID=072D9B189C4AA9DA4D4AD0B6C2C89E50; Path=/test   
Content-Type    text/html;charset=ISO-8859-1   
Transfer-Encoding   chunked   
Content-Encoding    gzip   
Vary    Accept-Encoding   
Date    Mon, 04 Jan 2010 04:49:38 GMT   
2.请求头信息   
Host    localhost:8080   
User-Agent  Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6   
Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8   
Accept-Language zh-cn,zh;q=0.5   
Accept-Encoding gzip,deflate   
Accept-Charset  GB2312,utf-8;q=0.7,*;q=0.7   
Keep-Alive  300   
Connection  keep-alive   
Cookie  JSESSIONID=1C8DB59AC74495495ED374B13C3D930A  
Cache-Control   max-age=0

没有配之前为

1.响应头信息   
Server  Apache-Coyote/1.1   
Content-Type    text/html;charset=ISO-8859-1   
Transfer-Encoding   chunked   
Date    Mon, 04 Jan 2010 04:54:00 GMT   
请求头信息   
Host    localhost:8080   
User-Agent  Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6   
Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8   
Accept-Language zh-cn,zh;q=0.5   
Accept-Encoding gzip,deflate   
Accept-Charset  GB2312,utf-8;q=0.7,*;q=0.7   
Keep-Alive  300   
Connection  keep-alive   
Cookie  JSESSIONID=072D9B189C4AA9DA4D4AD0B6C2C89E50  
Cache-Control   max-age=0