在过滤器或拦截器中如何给放行的header添加参数，  参考如下方式： 需要定义一个类来集成HttpServletRequestWrapper ， 增加方法实现

public final class MutableHttpServletRequest extends HttpServletRequestWrapper {

    private final Map<String, String> customHeaders;

    /**
     * @param request
     */
    public MutableHttpServletRequest(HttpServletRequest request) {
        super(request);
        this.customHeaders = new HashMap<String, String>();
    }

    public void putHeader(String name, String value) {
        this.customHeaders.put(name, value);
    }

}

 

在过滤器中：

@Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
            throws ServletException, IOException {

                request.setAttribute("uid", uid);

                HttpServletRequest req = (HttpServletRequest) request;
                MutableHttpServletRequest mutableRequest = new MutableHttpServletRequest(req);
                mutableRequest.putHeader("uid", uid);
                filterChain.doFilter(request, response);
            }
        }
    }

 

不会，我可以学；落后，我可以追赶；跌倒，我可以站起来；我一定行！