Spring Cloud Gateway Use predicate to check header authorization

Figured out the syntax, will only route to service if both conditions are met

cloud:
gateway:
  routes:
    - id: serviceRoute
      uri: http://service:8000
      predicates:
        - Path=/service/
        - Header=Authorization, Basic password
      filters:
        - name: CircuitBreaker
          args:
            name: slow
            fallbackUri: forward:/fallback/service

The below is my sample based on spring gateway sample. If no header Authorization, access http://localhost:20000/, response code is 404. If add Authorization, reponse code is 405 which means access ok. Please change Path as your need.

main class defination

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.security.config.web.server.ServerHttpSecurity;
import org.springframework.security.core.userdetails.MapReactiveUserDetailsService;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.web.server.SecurityWebFilterChain;

@SpringBootApplication
public class DemogatewayApplication {

    @Bean
    SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http) throws Exception {
        return http.httpBasic().and()
                .csrf().disable()
                .authorizeExchange()
                .pathMatchers("/anything/**").authenticated()
                .anyExchange().permitAll()
                .and()
                .build();
    }

    @Bean
    public MapReactiveUserDetailsService reactiveUserDetailsService() {
        UserDetails user = User.withDefaultPasswordEncoder().username("user").password("password").roles("USER").build();
        return new MapReactiveUserDetailsService(user);
    }

    public static void main(String[] args) {
        SpringApplication.run(DemogatewayApplication.class, args);
    }
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>spring-cloud-gateway-sample</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>spring-cloud-gateway-sample</name>
    <description>Demo project for Spring Cloud Gateway</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.RC2</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

application.yml defination

server:
  port: 20000

spring:
  cloud:
    gateway:
      routes:
      - id: serviceRoute
        uri: http://www.sohu.com
        predicates:
        - Path=/
        - Header=Authorization, Bearer [0-9a-zA-Z-.]*