Merge remote-tracking branch 'origin/master'

luoyb

2021-05-31 3ae6bd194fe1f17b4f5d96cb78b057705e5d0d78

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package cc.mrbird.febs.common.doc.gateway.filter;
 
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.util.StringUtils;
import org.springframework.web.server.ServerWebExchange;
 
/**
 * @author MrBird
 */
@SuppressWarnings("all")
public class FebsDocGatewayHeaderFilter extends AbstractGatewayFilterFactory {
 
    private static final String HEADER_NAME = "X-Forwarded-Prefix";
    private static final String URI = "/v2/api-docs";
 
    @Override
    public GatewayFilter apply(Object config) {
        return (exchange, chain) -> {
            ServerHttpRequest request = exchange.getRequest();
            String path = request.getURI().getPath();
            if (!StringUtils.endsWithIgnoreCase(path, URI)) {
                return chain.filter(exchange);
            }
            String basePath = path.substring(0, path.lastIndexOf(URI));
            ServerHttpRequest newRequest = request.mutate().header(HEADER_NAME, basePath).build();
            ServerWebExchange newExchange = exchange.mutate().request(newRequest).build();
            return chain.filter(newExchange);
        };
    }
}