07.spring cloud gateway oauth 整合

https://gitee.com/owenwangwen/open-capacity-platform/tree/master/new-api-gateway
package com.open.capacity.client.filter;

import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

import javax.annotation.Resource;

import org.apache.commons.lang3.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.server.ServerWebExchange;

import com.alibaba.fastjson.JSONObject;
import com.open.capacity.client.utils.TokenUtil;
import com.open.capacity.client.vo.AuthIgnored;
import com.open.capacity.common.constant.TraceConstant;
import com.open.capacity.common.constant.UaaConstant;

import reactor.core.publisher.Mono;

/**
 * * 程序名 : AccessFilter 建立日期: 2018-09-09 作者 : someday 模块 : 网关 描述 : oauth校验 备注 :
 * version20180909001
 * <p>
 * 修改历史 序号 日期 修改人 修改原因
 */
@Component
public class AccessFilter implements GlobalFilter, Ordered {

    // url匹配器
    private AntPathMatcher pathMatcher = new AntPathMatcher();

    @Resource
    private RedisTemplate<String, Object> redisTemplate;

    @Resource
    private AuthIgnored authIgnored;

    @Override
    public int getOrder() {
        // TODO Auto-generated method stub
        return -500;
    }

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        // TODO Auto-generated method stub

        String accessToken = TokenUtil.extractToken(exchange.getRequest());

        // 默认
        boolean flag = false;

        for (String ignored : authIgnored.getIgnored()) {

            if (pathMatcher.match(ignored, exchange.getRequest().getPath().value())) {
                flag = true; // 白名单
            }

        }

        if (flag) {
            return chain.filter(exchange);
        } else {

            Map<String, Object> params = (Map<String, Object>) redisTemplate.opsForValue().get(UaaConstant.TOKEN+":" + accessToken);

            if (params != null) {
                return chain.filter(exchange);
            } else {
                exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);

                ServerHttpResponse response = exchange.getResponse();
                JSONObject message = new JSONObject();
                message.put("resp_code", 401);
                message.put("resp_msg", "未认证通过！");
                byte[] bits = message.toJSONString().getBytes(StandardCharsets.UTF_8);
                DataBuffer buffer = response.bufferFactory().wrap(bits);
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                // 指定编码，否则在浏览器中会中文乱码
                response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
                return response.writeWith(Mono.just(buffer));
            }

        }

    }

}
来源：51CTO
作者：owen_wen
链接：https://blog.51cto.com/13005375/2362854?source=dra
标签
string
response
gateway
oauth
exchange