1、spring-cloud版本

<spring-cloud.version>Finchley.RELEASE</spring-cloud.version>

2、sprring-boot版本

<version>2.0.3.RELEASE</version>

3、错误描述

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-05-21 16:53:50.138 ERROR 15308 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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

Description:

Parameter 0 of method modifyRequestBodyGatewayFilterFactory in org.springframework.cloud.gateway.config.GatewayAutoConfiguration required a bean of type 'org.springframework.http.codec.ServerCodecConfigurer' that could not be found.

Action:

Consider defining a bean of type 'org.springframework.http.codec.ServerCodecConfigurer' in your configuration.

 

4、原因

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

与

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

版本冲突

5、解决

可以删除：

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