springCloud集成gateway启动报错

爱被打了一巴掌 2022-12-17 07:17 267阅读 0赞

原因是因为springboot 是2.2.3版本

`Spring Boot 2.2.3` 修复了 Spring Boot `2.2`的大量问题，当升级至 `2.2.3` 以后，直接翻车 `pigx-gateway` 网关应用直接启动不起来。

***************************
    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:597)
    
    The following method did not exist:
    
        reactor.netty.resources.ConnectionProvider.elastic(Ljava/lang/String;Ljava/time/Duration;)Lreactor/netty/resources/ConnectionProvider;
    
    The method's class, reactor.netty.resources.ConnectionProvider, is available from the following locations:
    
        jar:file:/Users/lengleng/env/repository/io/projectreactor/netty/reactor-netty/0.9.3.RELEASE/reactor-netty-0.9.3.RELEASE.jar!/reactor/netty/resources/ConnectionProvider.class
    
    It was loaded from the following location:
    
        file:/Users/lengleng/env/repository/io/projectreactor/netty/reactor-netty/0.9.3.RELEASE/reactor-netty-0.9.3.RELEASE.jar
    
    
    Action:
    
    Correct the classpath of your application so that it contains a single, compatible version of reactor.netty.resources.ConnectionProvider

日志排查 发现

ConnectionProvider

## 解决方法 ##

*  全局使用 `0.9.4` 暂时是 快照版本，或者降级到 `0.9.2` ，Spring Boot 2.2.3 未修改`reactor` 问题，降级是目前最好的选择。

<dependencyManagement>
    		<dependencies>
    			<dependency>
    				<groupId>io.projectreactor.netty</groupId>
    				<artifactId>reactor-netty</artifactId>
    				<version>0.9.2.RELEASE</version>
    			</dependency>
    		</dependencies>
    	</dependencyManagement>

转自 解决方法 ：[https://www.imooc.com/article/299978?block\_id=tuijian\_wz][https_www.imooc.com_article_299978_block_id_tuijian_wz]  
作者：晓晓的冷冷  
链接：https://www.imooc.com/article/299978?block\_id=tuijian\_wz  
来源：慕课网

[https_www.imooc.com_article_299978_block_id_tuijian_wz]: https://www.imooc.com/article/299978?block_id=tuijian_wz