SpringColud TokenFilter

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package com.example.apigeteway.filter;   import com.netflix.zuul.ZuulFilter; import com.netflix.zuul.context.RequestContext; import org.springframework.stereotype.Component;   import javax.servlet.http.HttpServletRequest;   import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_DECORATION_FILTER_ORDER; import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.PRE_TYPE;   /**  * @Title: PreFilter PostFilter  * @ProjectName api-geteway  * @Desc 判断token  * @date 2019/12/1616:34  */ @Component public class PreTokenFilter extends ZuulFilter {     @Override     public String filterType() {         return PRE_TYPE;     }       @Override     public int filterOrder() {         return PRE_DECORATION_FILTER_ORDER - 1;     }       /**      * false 不启用      * @return      */     @Override     public boolean shouldFilter() {         return false;     }       @Override     public Object run() {         RequestContext requestContext = RequestContext.getCurrentContext();         HttpServletRequest request = requestContext.getRequest();         // 这里是从参数中,也可以从header中 或者 cookie中         String token = request.getParameter("token");        /* if (StringUtils.isEmpty(token)) {             requestContext.setSendZuulResponse(false);             requestContext.setResponseStatusCode(HttpStatus.UNAUTHORIZED.value());         }*/         return null;     } }