–有 3 个 HTTP 响应头字段都可以禁止浏览器缓存当前页面，它们在 Servlet 中的示例代码如下：
•response.setDateHeader("Expires",-1);
•response.setHeader("Cache-Control","no-cache");
•response.setHeader("Pragma","no-cache");
–并不是所有的浏览器都能完全支持上面的三个响应头，因此最好是同时使用上面的三个响应头
package com.Greatest.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.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet Filter implementation class cache
*/
@WebFilter("/cache/*")
public class cache extends MyFilter {
@Override
public void doFilter(HttpServletRequest request, HttpServletResponse response, FilterChain Chain)
throws IOException, ServletException {
response.setDateHeader("Expires", -1);
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
Chain.doFilter(request, response);
}
}
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h4>B Page</h4>
<a href="a.jsp">To AAA Page</a>
</body>
</html><%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h4>A Page</h4>
<a href="b.jsp">To B Page</a>
<br><br>
<img alt="" src="aaa.jpg">
</body>
</html>