filter 过滤缓存

时间：2023-02-11 00:30:27
package fifter;

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.annotation.WebFilter;

import javax.servlet.http.HttpServletResponse;

@WebFilter("/*")

public class AcheTest implements Filter {

    @Override

    public void destroy() {

        // TODO 自动生成的方法存根

    }

    @Override

    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)

            throws IOException, ServletException {

        HttpServletResponse resp = (HttpServletResponse) arg1;

        resp.setDateHeader("expires", -1);

        resp.setHeader("Cache-Control", "no-cache");

        resp.setHeader("Pragma", "no-cache");

        arg2.doFilter(arg0, arg1);

        // TODO 自动生成的方法存根

    }

    @Override

    public void init(FilterConfig arg0) throws ServletException {

        // TODO 自动生成的方法存根

    }

}

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