在tomcat中直接设置Response的Headers
比如：设置Cache-Control
1、编写过滤器
package com.vking.power.web.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* 过滤器
*/
public class StaticCacheControl implements Filter {
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)servletRequest;
HttpServletResponse response = (HttpServletResponse)servletResponse;
response.setHeader("Cache-Control", "max-age=2592000");
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {}
public void destroy() {}
}
2、将StaticCacheControl导出为jar包
image.png
image.png
3、将jar包直接扔到tomcat/lib目录下
4、在tomcat/conf/web.xml中增加下列代码
<filter>
<filter-name>staticFilter</filter-name>
<!--包名加文件名-->
<filter-class>com.vking.power.web.filter.StaticCacheControl</filter-class>
</filter>
<filter-mapping>
<filter-name>staticFilter</filter-name>
<!--需要过滤的地址-->
<url-pattern>*.pak</url-pattern>
</filter-mapping>
