如何在网关转发请求之前完成登录校检？NettyRoutingFilter负责转发

GlobalFilter 网关模块中实现

自定义基础模板

@Component
public class MyGlobalFilter implements GlobalFilter , Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("This is MyGlobalFilter");

                exchange.getRequest().getHeaders().forEach((k,v)->{
                    System.out.println(k+":"+v);
                });
        return chain.filter(exchange);
    }
//顺序 越小越先执行
    @Override
    public int getOrder() {
        return 0;
    }
}

通过前端发送到后端的校检

JWT 校检模板

@Component
public class MyGlobalFilter implements GlobalFilter , Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("This is MyGlobalFilter");
         // 1.获取请求头中的tokens或者request
            List<String> tokenHeaders =   exchange.getRequest().getHeaders().get("token");
            String realtoken = null;

   // 2.判断是否需要做登录拦截
     RequestPath path =   exchange.getRequest().getPath();
     String realpath = path.value();
        System.out.println("realpath"+realpath);
        if(realpath.contains("login")||realpath.contains("register")){
        return chain.filter(exchange);
    }
        //3.判断是否携带token
        if(tokenHeaders!=null){
            realtoken = tokenHeaders.get(0);
        }else {
            //没有token
            //返回错误信息 111 没有token
            exchange.getResponse().setRawStatusCode(777);
            //结束传递
            return exchange.getResponse().setComplete();
        }
// 4.判断token是否有效
      Claims claims = null;
        try{
            claims = JwtUtil.parseJWT("123456",realtoken);
        }catch (Exception e){
            //  002 token无效
            exchange.getResponse().setRawStatusCode(222);
            return exchange.getResponse().setComplete();
        }
//5.将用户信息传递
        System.out.println("用户信息id"+claims.get("userid"));
        //6 放行
        return chain.filter(exchange);
    }
//顺序 越小越先执行
    @Override
    public int getOrder() {
        return 0;
    }

}

JWT校检模板2

@Component
@RequiredArgsConstructor
@EnableConfigurationProperties(AuthProperties.class)
public class AuthGlobalFilter implements GlobalFilter, Ordered {

    private final JwtTool jwtTool;

    private final AuthProperties authProperties;

    private final AntPathMatcher antPathMatcher = new AntPathMatcher();

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        // 1.获取Request
        ServerHttpRequest request = exchange.getRequest();
        // 2.判断是否不需要拦截
        if(isExclude(request.getPath().toString())){
            // 无需拦截，直接放行
            return chain.filter(exchange);
        }
        // 3.获取请求头中的token
        String token = null;
        List<String> headers = request.getHeaders().get("authorization");
        if (!CollUtils.isEmpty(headers)) {
            token = headers.get(0);
        }
        // 4.校验并解析token
        Long userId = null;
        try {
            userId = jwtTool.parseToken(token);
        } catch (UnauthorizedException e) {
            // 如果无效，拦截
            ServerHttpResponse response = exchange.getResponse();
            response.setRawStatusCode(401);
            return response.setComplete();
        }

        // TODO 5.如果有效，传递用户信息
        System.out.println("userId = " + userId);
        // 6.放行
        return chain.filter(exchange);
    }

    private boolean isExclude(String antPath) {
        for (String pathPattern : authProperties.getExcludePaths()) {
            if(antPathMatcher.match(pathPattern, antPath)){
                return true;
            }
        }
        return false;
    }

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