网关过滤器保头

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import com.netflix.zuul.exception.ZuulException;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;

@Component
public class WebFilter extends ZuulFilter {


    @Override
    public String filterType() {
        return "pre";
    }

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

    @Override
    public boolean shouldFilter() {
        return true;
    }

    @Override
    public Object run() throws ZuulException {
        //得到request上下文
        RequestContext context = RequestContext.getCurrentContext();
        //得到request域
        HttpServletRequest request = context.getRequest();
        //得到头
        String header = request.getHeader("Authorization");
        System.out.println(header);
        //判断是否有头
        if (header!=null&&!"".equals(header)){
            //把请求头信息进行转发
            context.addZuulRequestHeader("Authorization",header);
        }
        return null;
    }
}

    @Autowired
    private HttpServletRequest httpServletRequest;

    @RequestMapping(method = RequestMethod.GET)
    public Result findAll(){
        String header = httpServletRequest.getHeader("Authorization");
        System.out.println(header);
        return new Result(true, StatusCode.OK,"查询全部成功",labelService.findAll());
    }