Filter实现浏览器是否缓存页面信息,和控制编码-白红宇

Filter实现浏览器是否缓存页面信息,和控制编码

阅读量：6288 次

发布时间：2019-06-22

本文共 3468 字，大约阅读时间需要 11 分钟。

后台配置文件
    
    	
     
      jqueryeasyui
     	
     		
      
       index.html
      		
      
       index.htm
      		
      
       index.jsp
      		
      
       default.html
      		
      
       default.htm
      		
      
       default.jsp
      	
     	
     	
     		
      
       ResponseHeaderFilter
      		
      
       tk.Martin.filterDemo.filter.ResponseHeaderFilter
      		
      			
       
        Cache-Control
       			
       
        max-age=1000
       		
      	
     	
     		
      
       ResponseHeaderFilter
      		
      
       *.css
      	
      	
     	
     	
     		
      
       UserServlet
      		
      
       tk.Martin.filterDemo.servlet.UserServlet
      	
     	
     		
      
       UserServlet
      		
      
       /userOper.do

这是控制是否浏览器缓存的代码package tk.Martin.filterDemo.filter;import java.io.IOException;import java.util.Enumeration;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;public class ResponseHeaderFilter implements Filter {	FilterConfig filterConfig;	@Override	public void destroy() {		// TODO Auto-generated method stub	}	@Override	public void doFilter(ServletRequest req, ServletResponse res,			FilterChain chain) throws IOException, ServletException {		// TODO Auto-generated method stub				HttpServletRequest request=(HttpServletRequest) req;		HttpServletResponse response=(HttpServletResponse) res;				for(Enumeration e=filterConfig.getInitParameterNames();e.hasMoreElements();){						String headerName=(String) e.nextElement();			System.out.println("========================="+headerName+"===================================");			response.addHeader(headerName, filterConfig.getInitParameter(headerName));					}		chain.doFilter(request, response);			}	@Override	public void init(FilterConfig filterConfig) throws ServletException {		// TODO Auto-generated method stub		this.filterConfig=filterConfig;	}}

这是控制上传的编码的Filter过滤类package tk.Martin.filterDemo.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;public class CharacterEncodingFilter implements Filter {	private String characterEncoding;	@Override	public void destroy() {		// TODO Auto-generated method stub	}	@Override	public void doFilter(ServletRequest request, ServletResponse response,			FilterChain chain) throws IOException, ServletException {		// TODO Auto-generated method stub		request.setCharacterEncoding(characterEncoding);		chain.doFilter(request, response);	}	@Override	public void init(FilterConfig filterConfig) throws ServletException {		// TODO Auto-generated method stub		this.characterEncoding = filterConfig.getInitParameter("encoding");		System.out.println("页面编码方式===============" + this.characterEncoding				+ "=================================");	}}

这是前台的jsp的代码<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@include file="/common/tag.jsp"%><%@include file="/common/jquery.jsp"%>My JSP 'index.jsp' starting page
    
     
      
       
        
         	
          
          
            
           
          
          
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