springboot集成springCloud中gateway时启动报错的解决

在项目中引入springcloud中的gateway时报以下错误

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.

这个是由于依赖冲突，spring-cloud-starter-gateway与spring-boot-starter-web和spring-boot-starter-webflux依赖冲突

解决方式：

在引入gateway时过滤掉上面两个依赖

 <dependency>
            <groupid>org.springframework.cloud</groupid>
            <artifactid>spring-cloud-starter-gateway</artifactid>
            <exclusions>
                <exclusion>
                    <groupid>org.springframework.boot</groupid>
                    <artifactid>spring-boot-starter-web</artifactid>
                </exclusion>
                <exclusion>
                    <groupid>org.springframework.boot</groupid>
                    <artifactid>spring-boot-starter-webflux</artifactid>
                </exclusion>
            </exclusions>
        </dependency>

springboot整合gateway启动失败

问题：

springboot整合gateway启动失败

***************************
application failed to start
***************************
description:
an attempt was made to call a method that does not exist. the attempt was made from the following location:
org.springframework.cloud.gateway.config.gatewayautoconfiguration$nettyconfiguration.gatewayhttpclient(gatewayautoconfiguration.java:622)
the following method did not exist:
reactor.netty.resources.connectionprovider.elastic(ljava/lang/string;ljava/time/duration;ljava/time/duration;)lreactor/netty/resources/connectionprovider;
the method's class, reactor.netty.resources.connectionprovider, is available from the following locations:
jar:file:/c:/users/administrator/.m2/repository/io/projectreactor/netty/reactor-netty/0.9.1.release/reactor-netty-0.9.1.release.jar!/reactor/netty/resources/connectionprovider.class
it was loaded from the following location:
file:/c:/users/administrator/.m2/repository/io/projectreactor/netty/reactor-netty/0.9.1.release/reactor-netty-0.9.1.release.jar
action:
correct the classpath of your application so that it contains a single, compatible version of reactor.netty.resources.connectionprovider
disconnected from the target vm, address: '127.0.0.1:55875', transport: 'socket'
process finished with exit code 1

这块主要是版本兼容的问题，

最初用的版本是：

        <dependency>
            <groupid>io.projectreactor.netty</groupid>
            <artifactid>reactor-netty</artifactid>
            <version>0.9.4.release</version>
        </dependency>

网上有的是需要把这个版本降低，我这是降低了也不行

最后升高了版本改成了：

        <dependency>
            <groupid>io.projectreactor.netty</groupid>
            <artifactid>reactor-netty</artifactid>
            <version>0.9.14.release</version>
        </dependency>

本项目里springboot版本为：2.3.1，根据自己项目需要吧，看一下自己项目中各个版本之间的问题

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。