Spring cloud zuul跨域

/**
 * zuul转发前过滤器
 */
@Component
public class PreFilter extends ZuulFilter {
    public PreFilter() {
        super();
    }
 
    @Override
    public String filterType() {
        return FilterConstants.PRE_TYPE;
    }
 
    @Override
    public int filterOrder() {
        return 0;
    }
 
    @Override
    public boolean shouldFilter() {
//        return true;
 
        RequestContext ctx = RequestContext.getCurrentContext();
        HttpServletRequest request = ctx.getRequest();
        //只过滤OPTIONS 请求
        if(request.getMethod().equals(RequestMethod.OPTIONS.name())){
 
            return true;
        }
        return false;
    }
 
    @Override
    public Object run() {
 
        RequestContext ctx = RequestContext.getCurrentContext();
        HttpServletRequest request = ctx.getRequest();
        HttpServletResponse response = ctx.getResponse();
 
        response.setHeader("Access-Control-Allow-Origin",request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Credentials","true");
        response.setHeader("Access-Control-Allow-Headers","authorization, content-type");
        response.setHeader("Access-Control-Allow-Methods","POST,GET");
 
        String requestUrl = request.getRequestURL().toString();
        String requestUri = request.getRequestURI();
        String zuul = requestUrl.substring(0,requestUrl.indexOf(requestUri)); // zuul根路径
        ctx.addZuulRequestHeader("zuul", zuul);
        //不再路由
        ctx.setSendZuulResponse(false);
        ctx.setResponseStatusCode(200);
 
        return null;
    }
    
    
    
}

@Component
public class PostFilter extends ZuulFilter {
    protected static final String SEND_ERROR_FILTER_RAN = "sendErrorFilter.ran";
 
    @Override
    public String filterType() {
        return FilterConstants.POST_TYPE;
    }
 
    @Override
    public int filterOrder() {
        return -1;
    }
 
    @Override
    public boolean shouldFilter() {
        return true;
    }
 
    @Override
    public Object run() {
 
        return null;
    }
}