filter 过滤缓存

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

    }

}