zuul作为网关充当过滤器

一，zuul作为过滤器实现身份校验

网关连接redis校验令牌

 2 
 3 import com.alibaba.fastjson.JSON;
 4 import com.netflix.zuul.ZuulFilter;
 5 import com.netflix.zuul.context.RequestContext;
 6 import com.netflix.zuul.exception.ZuulException;
 7 
 8 import com.xuecheng.filesystem.framework.model.response.CommonCode;
 9 import com.xuecheng.filesystem.framework.model.response.ResponseResult;
10 import com.xuecheng.govern.gateway.service.LoginService;
11 import org.springframework.beans.factory.annotation.Autowired;
12 import org.springframework.stereotype.Component;
13 import org.springframework.util.StringUtils;
14 
15 import javax.servlet.http.HttpServletRequest;
16 
17 @Component
18 public class LoginFilter extends ZuulFilter {
19 
20     @Autowired
21     private LoginService loginService;
22 
23     @Override
24     public String filterType() {
25         return "pre";
26     }
27 
28     @Override
29     public int filterOrder() {
30         return 0;
31     }
32 
33     @Override
34     public boolean shouldFilter() {
35         return true;
36     }
37     
38     /**
39      * 验证登录信息
40      * @return
41      * @throws ZuulException
42      */
43     @Override
44     public Object run() throws ZuulException {
45 
46         RequestContext requestContext = RequestContext.getCurrentContext();
47         HttpServletRequest request = requestContext.getRequest();
48 
49         //1. 判断cookie中jti是否存在
50         String jti = loginService.getJtiFromCookie(request);
51         if (StringUtils.isEmpty(jti)){
52             //拒绝访问
53             this.accessRefused();
54         }
55 
56 
57         //2. 判断redis中的token是否过期
58         boolean result = loginService.getTokenFromRedis(jti);
59         if (!result){
60             //过期
61             this.accessRefused();
62         }
63 
64         //3. 判断header中是否存在Authorization
65         String headerValue=loginService.getHeaderInfo(request);
66         if (StringUtils.isEmpty(headerValue)){
67             this.accessRefused();
68         }
69 
70         return null;
71     }
72 
73     private void accessRefused() {
74 
75         RequestContext requestContext = RequestContext.getCurrentContext();
76         //设置拒绝访问
77         requestContext.setSendZuulResponse(false);
78         //设置响应码
79         requestContext.setResponseStatusCode(200);
80         //设置contenttype
81         requestContext.getResponse().setContentType("application/json;charset=utf-8");
82         //设置响应内容
83         ResponseResult responseResult = new ResponseResult(CommonCode.UNAUTHENTICATED);
84         String jsonString = JSON.toJSONString(responseResult);
85 
86         requestContext.setResponseBody(jsonString);
87     }
88 }

service

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.util.Map;

@Service
public class LoginService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    /**
     * 从cookie中获取数据
     * @param request
     * @return
     */
    public String getJtiFromCookie(HttpServletRequest request) {

        Map<String, String> map = CookieUtil.readCookie(request, "uid");
        String jti = map.get("uid");
        return jti;
    }

    /**
     * 从redis中获取令牌信息是否过期
     * @param jti
     * @return
     */
    public boolean getTokenFromRedis(String jti) {
        String key = "user_token:"+jti;
        Long expire = stringRedisTemplate.getExpire(key);
        return expire>0;
    }

    /**
     * 从header中获取数据
     * @param request
     * @return
     */
    public String getHeaderInfo(HttpServletRequest request) {
        String headerValue = request.getHeader("Authorization");
        if (StringUtils.isEmpty(headerValue)){
            return null;
        }
        if (!headerValue.startsWith("Bearer ")){
            return null;
        }

        return headerValue;
    }
}

 

实现功能

 

出现的问题：客户端不同，cookie不同

postman

和浏览器保存的令牌不同

 

posted @ 2019-07-07 21:11  枫糖浆  阅读(689)  评论(0)  编辑  收藏  举报