JAVA获取请求头header中的参数

    //获得当前HttpServletRequest对象
    protected HttpServletRequest getRequest(){
        return ((ServletRequestAttributes) (RequestContextHolder.currentRequestAttributes())).getRequest();
    }

    //获取heard中的参数
    protected Map getRequestHeaderMap() {
        HttpServletRequest request = getRequest();
        Enumeration headerNames = request.getHeaderNames();
        Map headerMap = new HashMap<>(8);
        while (headerNames.hasMoreElements()) {
            String name = headerNames.nextElement();
            headerMap.put(name, request.getHeader(name));
        }
        return headerMap;
    }

获取请求头中的某个参数，注：获取时，get中需写全小写的参数名称

    String xxx= getRequestHeaderMap.get("xxx");