SpringMVC获取header信息

public void getHeader(@RequestHeader HttpHeaders headers, HttpServletRequest requests) {
    
    
        //获取key=host的集合
        List<String> token = headers.get("host");
        //获取key=host的集合的第一个值
        String hosts = headers.getFirst("host");
        //获取所有key，value
        Enumeration<String> headerNames = requests.getHeaderNames();
        while (headerNames.hasMoreElements()) {
    
    
            String headerName = headerNames.nextElement();
            String value = requests.getHeader(headerName);
            System.out.println(headerName + " : " + value);
        }
    }