关于Springboot+gateway整合依赖并处理依赖冲突问题
正⽂
spring boot版本和spring cloud版本
框架版本
SpringBoot  2.3.12.RELEASE
SpringCloud Hoxton.SR1
pom依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.12.RELEASE</version>
<relativePath/>
</parent>
<dependencies>
<!-- spring-boot-starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!-- gateway与spring-boot-starter-web冲突(spring-boot-starter-webflux) -->
<!--<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>-->
<!-- springCloud gateway -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
<!--<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</exclusion>
</exclusions>-->
</dependency>
<!-- httpClient依赖，缺少此依赖api⽹关转发请求时可能发⽣503错误 -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.5</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
配置⽂件（l）
server:
port: 8700
spring:
application:
name: sca-gateway
cloud:
gateway:
routes: #配置⽹关路由规则
- id: route01  #路由id,⾃⼰指定⼀个唯⼀值即可
uri: localhost:8081/ #⽹关帮我们转发的url
predicates: ###断⾔(谓此)：匹配请求规则
- Path=/nacos/provider/echo/**  #请求路径定义，此路径对应uri中的资源
filters: ##⽹关过滤器,⽤于对谓词中的内容进⾏判断分析以及处理
- StripPrefix=1 #转发之前去掉path中第⼀层路径，例如nacos
依赖冲突问题
**********************************************************
Spring MVC found on classpath, which is incompatible with Spring Cloud Gateway at this time. Please remove spring-boot-starter-web dependency.
**********************************************************
2020-07-21 10:12:27.253  WARN 8576 --- [          main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'gatewayControllerEndpoint' defined in class path resource
[org/springframework/cloud/gateway/config/GatewayAutoConfiguration$GatewayActuatorConfiguration.class]: Unsatisfied dependency expressed through method
'gatewayControllerEndpoint' parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name
'modifyRequestBodyGatewayFilterFactory' defined in class path resource [org/springframework/cloud/gateway/config/GatewayAutoConfiguration.class]: Unsatisfied dependency expressed through method 'modifyRequestBodyGatewayFilterFactory' parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.dec.ServerCodecConfigurer' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2020-07-21 10:12:27.253  INFO 8576 --- [          main] o.StandardService  : Stopping service [Tomcat]
springcloud难学吗2020-07-21 10:12:27.273  INFO 8576 --- [          main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-07-21 10:12:27.388 ERROR 8576 --- [          main] o.s.b.d.LoggingFailureAnalysisReporter  :
***************************
APPLICATION FAILED TO START
***************************
Description:
Parameter 0 of method modifyRequestBodyGatewayFilterFactory in org.springframework.fig.GatewayAutoConfiguration required a bean of type
'org.dec.ServerCodecConfigurer' that could not be found.
Action:
Consider defining a bean of type 'org.dec.ServerCodecConfigurer' in your configuration.
2020-07-21 10:12:27.398  WARN 8576 --- [          main] o.s.boot.SpringApplication              : Unable to close ApplicationContext
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'springApplicationAdminRegistrar' defined in class path resource
[org/springframework/boot/autoconfigure/admin/SpringApplicationAdminJmxAutoConfiguration.class]: Unsatisfied dependency expressed through method 'springApplicationAdminRegistrar' parameter 1; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'nv.Environment' available:
expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
at org.springframework.beans.factory.ateArgumentArray(ConstructorResolver.java:798) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:539) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsing
FactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.ateBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.ateBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.Singleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.Bean(AbstractBeanFactory.java:207) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at t.ieveApplicationListeners(AbstractApplicationEventMulticaster.java:245) ~[spring-context-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at t.ApplicationListeners(AbstractApplicationEventMulticaster.java:197) ~[spring-context-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at t.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:134) ~[spring-context-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at t.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:403) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at t.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:360) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.boot.availability.AvailabilityChangeEvent.publish(AvailabilityChangeEvent.java:81) ~[spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.availability.AvailabilityChangeEvent.publish(AvailabilityChangeEvent.java:67) ~[spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.t.ServletWebServerApplicationContext.doClose(ServletWebServerApplicationContext.java:167) ~[spring-boot-
2.3.0.RELEASE.jar:2.3.0.RELEASE]
at t.support.AbstractApplicationContext.close(AbstractApplicationContext.java:978) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:814) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:325) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.0.RELEASE.jar:2.3.0.RELEASE]
at online.hupeng.cloud.gateway.GateWayApplication.main(GateWayApplication.java:12) [classes/:na]
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'nv.Environment' available: expected at least 1 bean
which qualifies as autowire candidate. Dependency annotations: {}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1716) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1272) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.solveDependency(DefaultListableBeanFactory.java:1226) ~[spring-beans-
5.2.
6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.solveAutowiredArgument(ConstructorResolver.java:885) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
at org.springframework.beans.factory.ateArgumentArray(ConstructorResolver.java:789) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
... 23 common frames omitted
注：spring-cloud-starter-gateway和spring-boot-starter-web依赖发⽣冲突，因为gateway依赖包内置spring-boot-starter-webflux依赖，与web包内的spring-boot-starter-webflux依赖起了冲突。
解决⽅法
将spring-boot-starter-webspring-依赖包剔除，或剔除boot-starter-webflux依赖包。
1. 剔除web包
<!-- gateway与spring-boot-starter-web冲突(spring-boot-starter-webflux) -->
<!--<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>-->
1. 剔除webflux包
<!-- gateway与spring-boot-starter-web冲突(spring-boot-starter-webflux) -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>    <exclusions>          <exclusion>              <groupId>org.springframework.boot</groupId>              <artifactId>spring-boot-starter-webflux</artifactId>          </exclusion>    </exclusions></dependency>到此这篇关于Springboot+gateway整合依赖并处理依赖冲突问题的⽂章就介绍到这了，更多相关Springboot gateway依赖冲突内容请搜索以前的⽂章或继续浏览下⾯的相关⽂章希望⼤家以后多多⽀持！

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