SpringCloud笔记之Zuul过滤器PreFilter实现token校验(简单样例)

1、首先准备访问路径，请求传递参数token

http://localhost/v2/customer/version?token=123

2、创建AuthenticationFilter

@Component
public class AuthenticationFilter  extends ZuulFilter{
    @Override
    public String filterType() {
        return FilterConstants.PRE_TYPE;
    }
    @Override
    public int filterOrder() {
        return PRE_DECORTION_FILTER_ORDER -2;
    }
     @Override
    public boolean shouldFilter() {
        return true;
    }
   @Override
    public Object run() throws ZuulException {
        // 在run方法中编写具体的业务逻辑
        //1. 获取Request对象
        RequestContext requestContext=RequestContext.getCurrentContext();
        HttpServletRequest  request=requestContext.getRequest();
        
        //2. 获取token参数
        String token=request.getParamter("token");
          //3. 对比token
        if(token==null||!"123".equalsIgnoreCase(token)){
            //4. token校验失败，直接响应数据
            requestContext.setSendZuulResponse(false);
            requestContext.setResponseStatusCode(HttpStatus.UNAUTHORIZED.value());
        }
          return null;
       
    }
}

本文地址：https://blog.csdn.net/weixin_46897235/article/details/107369457