找不到接口org.springframework.web.reactive.function.server.ServerRequest的主构造函数或默认构造函数

import org.springframework.web.reactive.function.server.ServerRequest;
import org.springframework.web.reactive.function.server.ServerResponse;
import reactor.core.publisher.Mono;

public Mono<ServerResponse> handleRequest(ServerRequest request) {
    // 使用ServerRequest对象处理请求
    // ...
}

import org.springframework.web.reactive.function.server.RouterFunction;
import org.springframework.web.reactive.function.server.ServerRequest;
import org.springframework.web.reactive.function.server.ServerResponse;
import static org.springframework.web.reactive.function.server.RequestPredicates.GET;
import static org.springframework.web.reactive.function.server.RouterFunctions.route;

public RouterFunction<ServerResponse> routerFunction() {
    return route(GET("/path"), this::handleRequest);
}

public Mono<ServerResponse> handleRequest(ServerRequest request) {
    // 使用ServerRequest对象处理请求
    // ...
}