老师，我按照你的附录去创建gateway模块，但是在yml配置的时候没有allowCredentials和maxAge的配置选项，且我在idea里面所提示的都是带有下划线的例如如下：

globalcors:
    # 解决options请求被拦截问题
    add-to-simple-url-handler-mapping: true
    # 跨域配置选项
    corsConfigurations:
        '[/**]':
            allowed-origins:
                - "http://localhost:3000"
                - "http://127.0.0.1:3000"
                - "http://192.168.99.106:3000"
``
![图片描述](https://img1.sycdn.imooc.com/szimg/05f34a6809e2574609920813.jpg)
上面截图没有剩下的两个选项

老师以下是我的pom.xml:

4.0.0
com.example
gateway
0.0.1-SNAPSHOT
gateway
gateway


hxds
com.example
0.0.1-SNAPSHOT

<properties>
    <java.version>15</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <!-- springboot版本 -->
    <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    <!-- springCloudAlibaba版本 -->
    <spring-cloud-alibaba.version>2.2.2.RELEASE</spring-cloud-alibaba.version>
</properties>

<dependencies>
    <!-- springCloud网关依赖，排除tomcat使用默认的Jett容器 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <!--使用jettyweb容器-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jetty</artifactId>
    </dependency>

    <!-- sentinel依赖 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
    </dependency>

    <!-- springCloud的sentinel的网关 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId>
    </dependency>

    <!-- nacos服务配置中心依赖 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    </dependency>

    <!-- nacos服务发现中心的依赖 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>

    <!--openfeign依赖-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>

    <!--WebSocket依赖-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

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

        <!-- springCloudAlibaba版本依赖 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>${spring-cloud-alibaba.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
            <configuration>
                <source>15</source>
                <target>15</target>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <version>${spring-boot.version}</version>
            <configuration>
                <mainClass>com.example.gateway.GatewayApplication</mainClass>
                <skip>true</skip>
            </configuration>
            <executions>
                <execution>
                    <id>repackage</id>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>