javaweb 获取客户端请求头信息

小咪咪 2023-06-07 10:49 5阅读 0赞

public void doGet(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
        	//设置将字符以“UTF-8”
    		response.setCharacterEncoding("UTF-8");
    		response.setHeader("content-type", "text/html;charset=UTF-8");
    		PrintWriter out=response.getWriter();
    		Enumeration<String> reqHeadInfos=request.getHeaderNames();//获取所有的请求头
    		out.write("获取到客户端所有的请求头信息如下");
    		out.write("<hr/>");
    		
    		while(reqHeadInfos.hasMoreElements()) {
    			String headName=(String)reqHeadInfos.nextElement();
    			String headValue=request.getHeader(headName);//根据请求头的没给他脑子获取对应的请求头的
    			out.write(headName+":"+headValue);
    			out.write("<br/>");
    		}
    		out.write("<br/>");
    		out.write("获取到客户端Accept-Encoding请求头的值");
    		out.write("<hr/>");
    		String value=request.getHeader("Accept-Encoding");
    		out.write(value);
    		
    		Enumeration<String> e=request.getHeaders("Accept-Encoding");
    		while(e.hasMoreElements()) {
    			String string=(String) e.nextElement();
    			System.out.println(string);
    		}
    			
    	}
    
        public void doPost(HttpServletRequest request, HttpServletResponse response)
                throws ServletException, IOException {
            doGet(request, response);
        }

效果如下  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzU5OTM3Nw_size_16_color_FFFFFF_t_70]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzU5OTM3Nw_size_16_color_FFFFFF_t_70]: /images/20230601/599cf4d57d8c4a8b8fca961d0dcf2218.png