gateway启动报错:org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of typ

将pom.xml中关于spring-boot-start-web模块的jar依赖去掉。web

错误分析:spring

根据上面描述(Description)中信息了解到GatewayAutoConfiguration这个配置中找不到ServerCodecConfig这个Bean。spring-boot

spring cloud gateway server项目是一个spring boot项目,在启动的时候会去加载它的配置,其中有一个叫作GatewayClassPathWarningAutoConfiguration的配置类中有这么一行代码:this

@Configuration
@ConditionalOnClass(name = "org.springframework.web.servlet.DispatcherServlet")
protected static class SpringMvcFoundOnClasspathConfiguration {

public SpringMvcFoundOnClasspathConfiguration() {
log.warn(BORDER+"Spring MVC found on classpath, which is incompatible with Spring Cloud Gateway at this time. "+
"Please remove spring-boot-starter-web dependency."+BORDER);
}

}

  


 在类路径上找到的Spring MVC,此时它与Spring Cloud网关不兼容。请删除spring-boot-start-web依赖项。spa

由于spring cloud gateway是基于webflux的,若是非要web支持的话须要导入spring-boot-starter-webflux而不是spring-boot-start-web。server

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