微服务整合gateway启动报Error creating bean with name ‘org.springframework.cloud.gateway.config错误

在进行spring cloudalibaba项目集成时，创建gateway模块时，报以下错误

attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.cloud.gateway.config.GatewayClassPathWarningAutoConfiguration$SpringMvcFoundOnClasspathConfiguration': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.gateway.config.GatewayClassPathWarningAutoConfiguration$SpringMvcFoundOnClasspathConfiguration]: Constructor threw exception; nested exception is org.springframework.cloud.gateway.support.MvcFoundOnClasspathException
2022-12-17 21:46:22.154  INFO 6112 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2022-12-17 21:46:22.173  INFO 6112 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-12-17 21:46:22.200 ERROR 6112 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

Spring MVC found on classpath, which is incompatible with Spring Cloud Gateway.

Action:

Please set spring.main.web-application-type=reactive or remove spring-boot-starter-web dependency.

Disconnected from the target VM, address: '127.0.0.1:2897', transport: 'socket'

Process finished with exit code 1
原因是引用gateway依赖和springboot依赖重复导致，如下。

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

如下图所示，我们能在项目中的Dependencies不难发现，在引用gateway依赖时已经引入了spring-boot依赖

解决办法是删掉gateway项目中的springboot依赖解决

对应的pom文件内如下：

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wish</groupId>
        <artifactId>network-manager-demo</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <groupId>com.wish</groupId>
    <artifactId>gateway-application</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>gateway-application</name>
    <description>Demo project for Spring Boot</description>

    <dependencies>
<!--        <dependency>-->
<!--            <groupId>org.springframework.boot</groupId>-->
<!--            <artifactId>spring-boot-starter-web</artifactId>-->
<!--        </dependency>-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
    </dependencies>

</project>

 效果如下

 至此问题解决

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