溯堂踩坑实录：网关问题

1.运行Spring Cloud Gateway报错

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'routeDefinitionRouteLocator' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration.class]: Unsatisfied dependency expressed through method 'routeDefinitionRouteLocator' parameter 4; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.core.convert.ConversionService' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Qualifier(value=webFluxConversionService)}

问题原因：Spring mvc和Spring Cloud Gateway不兼容

检查一下，发现存在依赖

<!--        <dependency>-->
<!--            <groupId>org.springframework</groupId>-->
<!--            <artifactId>spring-webmvc</artifactId>-->
<!--        </dependency>-->

解决方案：

1.删除该依赖

2.增加自定义 ConversionServiceConfig

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.support.DefaultConversionService;

@Configuration
public class ConversionServiceConfig {

    @Bean
    public ConversionService webFluxConversionService() {
        return new DefaultConversionService();
    }
}