Zuul 网关做token权限验证

@Component
public class WebFilter extends ZuulFilter {
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 0;
    }

    @Override
    public boolean shouldFilter() {
        return true;
    }

    @Override
    public Object run() throws ZuulException {
        //得到request上下文
        RequestContext currentContext = RequestContext.getCurrentContext();
        //得到request域
        HttpServletRequest request = currentContext.getRequest();
        //得到头信息
        String header = request.getHeader("Authorization");
        //判断是否有头信息
        if(header!=null && !"".equals(header)){
            //把头信息继续向下传
            currentContext.addZuulRequestHeader("Authorization", header);
        }
        return null;
    }
}

@Component
public class ManagerFilter extends ZuulFilter {

    @Autowired
    private JwtUtil jwtUtil;
    /**
     * 在请求前pre或者后post执行
     * @return
     */
    @Override
    public String filterType() {
        return "pre";
    }

    /**
     * 多个过滤器的执行顺序，数字越小，表示越先执行
     * @return
     */
    @Override
    public int filterOrder() {
        return 0;
    }

    /**
     * 当前过滤器是否开启true表示开启
     * @return
     */
    @Override
    public boolean shouldFilter() {
        return true;
    }

    /**
     * 过滤器内执行的操作 return 任何ojbect的值都表示继续执行
     * setsendzullRespponse(false)表示不再继续执行
     * @return
     * @throws ZuulException
     */
    @Override
    public Object run() throws ZuulException {
        System.out.println("经过后台过滤器了！");
        RequestContext requestContext = RequestContext.getCurrentContext();
        //request域
        HttpServletRequest request = requestContext.getRequest();

        if(request.getMethod().equals("OPTIONS")){  //预请求 放行
            return null;
        }

        if(request.getRequestURI().indexOf("login")>0){ //登录请求放行
            return null;
        }

        //得到头信息
        String header = request.getHeader("Authorization");
        if(header!=null && !"".equals(header)){
            if(header.startsWith("Bearer ")){
                String token = header.substring(7);
                try {
                    Claims claims = jwtUtil.parseJWT(token);
                    String roles = (String) claims.get("roles");
                    if(roles.equals("admin")){
                        //把头信息转发下去，并且放行
                        requestContext.addZuulRequestHeader("Authorization", header);
                        return null;
                    }
                }catch (Exception e){
                    e.printStackTrace();
                    requestContext.setSendZuulResponse(false);//终止运行
                }
            }
        }
        requestContext.setSendZuulResponse(false);//终止运行
        requestContext.setResponseStatusCode(403);
        requestContext.setResponseBody("权限不足");
        requestContext.getResponse().setContentType("text/html;charset=utf-8");
        return null;
    }
}