java读取前端请求头

读取请求头header信息

public void list(HttpServletRequest request) {
       try{
          Enumeration<String> headerNames = request.getHeaderNames();
         while(headerNames.hasMoreElements()){
              String name = headerNames.nextElement();
              //根据名称获取请求头的值
              String value = request.getHeader(name);
              System.out.println(name+"----"+value);
          }

       }catch (Exception ex){
           System.out.println(ex.getMessage());
       }
   }

打印效果：